ci: fix needs entries in merge_clean_snapshot_tags step

Bumps [github.com/mholt/archives](https://github.com/mholt/archives) from 0.1.1 to 0.1.2.
- [Release notes](https://github.com/mholt/archives/releases)
- [Commits](https://github.com/mholt/archives/compare/v0.1.1...v0.1.2)

---
updated-dependencies:
- dependency-name: github.com/mholt/archives
  dependency-version: 0.1.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

.dockerignore

@@ -1 +1 @@
-.git
+.git

.env

@@ -0,0 +1,6 @@
+GOTENBERG_VERSION=snapshot
+DOCKER_REGISTRY=gotenberg
+DOCKER_REPOSITORY=gotenberg
+DOCKERFILE=build/Dockerfile
+DOCKERFILE_CLOUDRUN=build/Dockerfile.cloudrun
+DOCKER_BUILD_CONTEXT='.'

.github/FUNDING.yml

@@ -0,0 +1 @@
+github: [gulien]

.github/actions/build-test-push/action.yml

@@ -0,0 +1,89 @@
+name: Build Test Push
+description: Build, test and push Docker images for a given platform
+author: Julien Neuhart
+
+inputs:
+  github_token:
+    description: The GitHub token
+    required: true
+    default: ${{ github.token }}
+  docker_hub_username:
+    description: The Docker Hub username
+    required: true
+  docker_hub_password:
+    description: The Docker Hub password
+    required: true
+  platform:
+    description: linux/amd64, linux/386, linux/arm64, linux/arm/v7
+    required: true
+  version:
+    description: Gotenberg version
+    required: true
+  skip_integrations_tests:
+    description: Define whether to skip integration testing
+    default: false
+  alternate_repository:
+    description: Alternate repository to push the tags to
+  dry_run:
+    description: Dry run this action
+
+outputs:
+  tags:
+    description: Comma separated list of tag
+    value: ${{ steps.build.outputs.tags }}
+  tags_cloud_run:
+    description: Comma separated list of Cloud Run tags (linux/amd64 only)
+    value: ${{ steps.build.outputs.tags_cloud_run }}
+
+runs:
+  using: composite
+  steps:
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Check out code
+      uses: actions/checkout@v4
+
+    - name: Log in to Docker Hub
+      if: inputs.docker_hub_username != ''
+      uses: docker/login-action@v3
+      with:
+        username: ${{ inputs.docker_hub_username }}
+        password: ${{ inputs.docker_hub_password }}
+
+    - name: Build ${{ inputs.platform }}
+      id: build
+      shell: bash
+      run: |
+        .github/actions/build-test-push/build.sh \
+          --version "${{ inputs.version }}" \
+          --platform "${{ inputs.platform }}" \
+          --alternate-repository "${{ inputs.alternate_repository }}" \
+          --dry-run "${{ inputs.dry_run }}"
+
+    - name: Run integration tests
+      if: inputs.skip_integrations_tests != 'true'
+      shell: bash
+      run: |
+        .github/actions/build-test-push/test.sh \
+          --version "${{ inputs.version }}" \
+          --platform "${{ inputs.platform }}" \
+          --alternate-repository "${{ inputs.alternate_repository }}" \
+          --dry-run "${{ inputs.dry_run }}"
+
+    - name: Push
+      if: inputs.docker_hub_username != ''
+      shell: bash
+      run: |
+        .github/actions/build-test-push/push.sh \
+          --tags "${{ steps.build.outputs.tags }},${{ steps.build.outputs.tags_cloud_run }}" \
+          --dry-run "${{ inputs.dry_run }}"
+
+    - name: Outputs
+      shell: bash
+      run: |
+        echo "tags=${{ steps.build.outputs.tags }}"
+        echo "tags_cloud_run=${{ steps.build.outputs.tags_cloud_run }}"

.github/actions/build-test-push/build.sh

@@ -0,0 +1,161 @@
+#!/bin/bash
+
+# Exit early.
+# See: https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html#The-Set-Builtin.
+set -e
+
+# Source dot env file.
+source .env
+
+# Arguments.
+version=""
+platform=""
+alternate_repository=""
+dry_run=""
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    --version)
+      version="${2//v/}"
+      shift 2
+      ;;
+    --platform)
+      platform="$2"
+      shift 2
+      ;;
+    --alternate-repository)
+      alternate_repository="$2"
+      shift 2
+      ;;
+    --dry-run)
+      dry_run="$2"
+      shift 2
+      ;;
+    *)
+      echo "Unknown option $1"
+      exit 1
+      ;;
+  esac
+done
+
+echo "Build and push 👷"
+echo
+
+echo "Gotenberg version: $version"
+echo "Target platform: $platform"
+
+if [ -n "$alternate_repository" ]; then
+  DOCKER_REPOSITORY=$alternate_repository
+  echo "⚠️ Using $alternate_repository for DOCKER_REPOSITORY"
+fi
+
+if [ "$dry_run" = "true" ]; then
+  echo "🚧 Dry run"
+fi
+
+# Build tags arrays.
+tags=()
+tags_cloud_run=()
+
+IFS='/' read -ra arch <<< "$platform"
+IFS='.' read -ra semver <<< "$version"
+
+if [ "${#semver[@]}" -eq 3 ]; then
+  echo
+  echo "Semver version detected"
+
+  major="${semver[0]}"
+  minor="${semver[1]}"
+  patch="${semver[2]}"
+
+  tags+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:latest-${arch[1]}")
+  tags+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major-${arch[1]}")
+  tags+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major.$minor-${arch[1]}")
+  tags+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major.$minor.$patch-${arch[1]}")
+
+  if [ "$platform" = "linux/amd64" ]; then
+    tags_cloud_run+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:latest-cloudrun")
+    tags_cloud_run+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major-cloudrun")
+    tags_cloud_run+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major.$minor-cloudrun")
+    tags_cloud_run+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$major.$minor.$patch-cloudrun")
+  fi
+else
+  echo
+  echo "Non-semver version detected, fallback to $version"
+
+  tags+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$version-${arch[1]}")
+  if [ "$platform" = "linux/amd64" ]; then
+    tags_cloud_run+=("$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$version-cloudrun")
+  fi
+fi
+
+tags_flags=()
+tags_cloud_run_flags=()
+
+echo "Will use the following tags:"
+for tag in "${tags[@]}"; do
+  tags_flags+=("-t" "$tag")
+  echo "- $tag"
+done
+for tag in "${tags_cloud_run[@]}"; do
+  tags_cloud_run_flags+=("-t" "$tag")
+  echo "- $tag"
+done
+echo
+
+# Build images.
+run_cmd() {
+  local cmd="$1"
+
+  if [ "$dry_run" = "true" ]; then
+    echo "🚧 Dry run - would run the following command:"
+    echo "$cmd"
+    echo
+  else
+    echo "⚙️ Running command:"
+    echo "$cmd"
+    eval "$cmd"
+    echo
+  fi
+}
+
+join() {
+  local delimiter="$1"
+  shift
+  local IFS="$delimiter"
+  echo "$*"
+}
+
+no_arch_tag="$DOCKER_REGISTRY/$DOCKER_REPOSITORY:$version"
+
+cmd="docker buildx build \
+    --build-arg GOTENBERG_VERSION=$version \
+    --platform $platform \
+    --load \
+    ${tags_flags[*]} \
+    -t $no_arch_tag \
+    -f $DOCKERFILE $DOCKER_BUILD_CONTEXT
+"
+run_cmd "$cmd"
+
+if [ "$platform" != "linux/amd64" ]; then
+  echo "⚠️ Skip Cloud Run variant(s)"
+  echo "✅ Done!"
+  echo "tags=$(join "," "${tags[@]}")" >> "$GITHUB_OUTPUT"
+  echo "tags_cloud_run=$(join "," "${tags_cloud_run[@]}")" >> "$GITHUB_OUTPUT"
+  exit 0
+fi
+
+cmd="docker build \
+    --build-arg DOCKER_REGISTRY=$DOCKER_REGISTRY \
+    --build-arg DOCKER_REPOSITORY=$DOCKER_REPOSITORY \
+    --build-arg GOTENBERG_VERSION=$version \
+    ${tags_cloud_run_flags[*]} \
+    -f $DOCKERFILE_CLOUDRUN $DOCKER_BUILD_CONTEXT
+"
+run_cmd "$cmd"
+
+echo "✅ Done!"
+echo "tags=$(join "," "${tags[@]}")" >> "$GITHUB_OUTPUT"
+echo "tags_cloud_run=$(join "," "${tags_cloud_run[@]}")" >> "$GITHUB_OUTPUT"
+exit 0

.github/actions/build-test-push/push.sh

@@ -0,0 +1,70 @@
+#!/bin/bash
+
+# Exit early.
+# See: https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html#The-Set-Builtin.
+set -e
+
+# Source dot env file.
+source .env
+
+# Arguments.
+tags=""
+dry_run=""
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    --tags)
+      tags="$2"
+      shift 2
+      ;;
+    --dry-run)
+      dry_run=$2
+      shift 2
+      ;;
+    *)
+      echo "Unknown option $1"
+      exit 1
+      ;;
+  esac
+done
+
+echo "Push tag(s) 📦"
+echo
+
+echo "Tag(s) to push:"
+IFS=',' read -ra tags_to_push <<< "$tags"
+for tag in "${tags_to_push[@]}"; do
+  echo "- $tag"
+done
+
+if [ "$dry_run" = "true" ]; then
+  echo "🚧 Dry run"
+fi
+echo
+
+# Push tags.
+run_cmd() {
+  local cmd="$1"
+
+  if [ "$dry_run" = "true" ]; then
+    echo "🚧 Dry run - would run the following command:"
+    echo "$cmd"
+    echo
+  else
+    echo "⚙️ Running command:"
+    echo "$cmd"
+    eval "$cmd"
+    echo
+  fi
+}
+
+for tag in "${tags_to_push[@]}"; do
+  cmd="docker push $tag"
+  run_cmd "$cmd"
+
+  echo "➡️ $tag pushed"
+  echo
+done
+
+echo "✅ Done!"
+exit 0

.github/actions/build-test-push/test.sh

@@ -0,0 +1,79 @@
+#!/bin/bash
+
+# Exit early.
+# See: https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html#The-Set-Builtin.
+set -e
+
+# Source dot env file.
+source .env
+
+# Arguments.
+version=""
+platform=""
+alternate_repository=""
+dry_run=""
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    --version)
+      version="${2//v/}"
+      shift 2
+      ;;
+    --platform)
+      platform="$2"
+      shift 2
+      ;;
+    --alternate-repository)
+      alternate_repository="$2"
+      shift 2
+      ;;
+    --dry-run)
+      dry_run="$2"
+      shift 2
+      ;;
+    *)
+      echo "Unknown option $1"
+      exit 1
+      ;;
+  esac
+done
+
+echo "Integration testing 🧪"
+echo
+
+echo "Gotenberg version: $version"
+echo "Target platform: $platform"
+
+repository=$DOCKER_REPOSITORY
+
+if [ -n "$alternate_repository" ]; then
+  echo "⚠️ Using $alternate_repository for DOCKER_REPOSITORY"
+  repository=$alternate_repository
+fi
+
+if [ "$dry_run" = "true" ]; then
+  echo "🚧 Dry run"
+fi
+echo
+
+# Test image.
+run_cmd() {
+  local cmd="$1"
+
+  if [ "$dry_run" = "true" ]; then
+    echo "🚧 Dry run - would run the following command:"
+    echo "$cmd"
+    echo
+  else
+    echo "⚙️ Running command:"
+    echo "$cmd"
+    eval "$cmd"
+    echo
+  fi
+}
+
+cmd="make test-integration DOCKER_REPOSITORY=$repository GOTENBERG_VERSION=$version PLATFORM=$platform NO_CONCURRENCY=true"
+run_cmd "$cmd"
+
+echo "✅ Done!"
+exit 0

.github/actions/clean/action.yml

@@ -0,0 +1,31 @@
+name: Clean
+description: Clean tags from Docker Hub
+author: Julien Neuhart
+
+inputs:
+  docker_hub_username:
+    description: The Docker Hub username
+    required: true
+  docker_hub_password:
+    description: The Docker Hub password
+    required: true
+  tags:
+    description: Comma separated list of tags to clean
+  snapshot_version:
+    description: Snapshot version to clean
+  dry_run:
+    description: Dry run this action
+
+runs:
+  using: composite
+  steps:
+    - name: Clean tags from Docker Hub
+      env:
+        DOCKERHUB_USERNAME: ${{ inputs.docker_hub_username }}
+        DOCKERHUB_TOKEN: ${{ inputs.docker_hub_password }}
+      shell: bash
+      run: |
+        .github/actions/clean/clean.sh \
+          --tags "${{ inputs.tags }}" \
+          --snapshot-version "${{ inputs.snapshot_version }}" \
+          --dry-run "${{ inputs.dry_run }}"

.github/actions/clean/clean.sh

@@ -0,0 +1,122 @@
+#!/bin/bash
+
+# Exit early.
+# See: https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html#The-Set-Builtin.
+set -e
+
+# Source dot env file.
+source .env
+
+# Arguments.
+tags=""
+snapshot_version=""
+dry_run=""
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    --tags)
+      tags="$2"
+      shift 2
+      ;;
+    --snapshot-version)
+      snapshot_version="${2//v/}"
+      shift 2
+      ;;
+    --dry-run)
+      dry_run="$2"
+      shift 2
+      ;;
+    *)
+      echo "Unknown option $1"
+      exit 1
+      ;;
+  esac
+done
+
+echo "Clean tag(s) from Docker Hub 🧹"
+echo
+
+IFS=',' read -ra tags_to_delete <<< "$tags"
+if [ -n "$snapshot_version" ]; then
+  tags_to_delete+=("$DOCKER_REGISTRY/snapshot:$snapshot_version")
+  tags_to_delete+=("$DOCKER_REGISTRY/snapshot:$snapshot_version-cloudrun")
+fi
+
+echo "Will delete the following tag(s):"
+for tag in "${tags_to_delete[@]}"; do
+  echo "- $tag"
+done
+
+if [ "$dry_run" = "true" ]; then
+  echo "🚧 Dry run"
+fi
+echo
+
+# Delete tags.
+base_url="https://hub.docker.com/v2"
+token=""
+
+if [ "$dry_run" = "true" ]; then
+  token="placeholder"
+  echo "🚧 Dry run - would call $base_url to get a token"
+  echo
+else
+  echo "🌐 Get token from $base_url"
+
+  readarray -t lines < <(
+    curl -s -X POST \
+      -H "Content-Type: application/json" \
+      -d "{\"username\":\"$DOCKERHUB_USERNAME\", \"password\":\"$DOCKERHUB_TOKEN\"}" \
+      -w "\n%{http_code}" \
+      "$base_url/users/login"
+  )
+
+  http_code="${lines[-1]}"
+  unset 'lines[-1]'
+  json_body=$(printf "%s\n" "${lines[@]}")
+
+  if [ "$http_code" -ne "200" ]; then
+    echo "❌ Wrong HTTP status - $http_code"
+    echo "$json_body"
+    exit 1
+  fi
+
+  token=$(jq -r '.token' <<< "$json_body")
+  echo
+fi
+
+if [ -z "$token" ]; then
+  echo "❌ No token from Docker Hub"
+  exit 1
+fi
+
+for tag in "${tags_to_delete[@]}"; do
+  if [ "$dry_run" = "true" ]; then
+    echo "🚧 Dry run - would call $base_url to delete tag $tag"
+    echo
+  else
+    echo "🌐 Delete tag $tag"
+    IFS=':' read -ra tag_parts <<< "$tag"
+
+    readarray -t lines < <(
+      curl -s -X DELETE \
+        -H "Authorization: Bearer $token" \
+        -w "\n%{http_code}" \
+        "$base_url/repositories/${tag_parts[0]}/tags/${tag_parts[1]}/"
+    )
+
+    http_code="${lines[-1]}"
+    unset 'lines[-1]'
+
+    if [ "$http_code" -ne "200" ] && [ "$http_code" -ne "204" ]; then
+      echo "❌ Wrong HTTP status - $http_code"
+      printf '%s\n' "${lines[@]}"
+      exit 1
+    fi
+
+    echo
+  fi
+done
+
+echo "✅ Done!"
+exit 0

.github/actions/merge/action.yml

@@ -0,0 +1,48 @@
+name: Merge
+description: Merge tags to single multi-platform tags
+author: Julien Neuhart
+
+inputs:
+  github_token:
+    description: The GitHub token
+    required: true
+    default: ${{ github.token }}
+  docker_hub_username:
+    description: The Docker Hub username
+    required: true
+  docker_hub_password:
+    description: The Docker Hub password
+    required: true
+  tags:
+    description: Comma separated tags to merge
+    required: true
+  alternate_registry:
+    description: Alternate registry to also push resulting tags
+  dry_run:
+    description: Dry run this action
+
+runs:
+  using: composite
+  steps:
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+
+    - name: Check out code
+      uses: actions/checkout@v4
+
+    - name: Log in to Docker Hub
+      uses: docker/login-action@v3
+      with:
+        username: ${{ inputs.docker_hub_username }}
+        password: ${{ inputs.docker_hub_password }}
+
+    - name: Merge
+      shell: bash
+      run: |
+        .github/actions/merge/merge.sh \
+          --tags "${{ inputs.tags }}" \
+          --alternate-registry "${{ inputs.alternate_registry }}" \
+          --dry-run "${{ inputs.dry_run }}"

.github/actions/merge/merge.sh

@@ -0,0 +1,107 @@
+#!/bin/bash
+
+# Exit early.
+# See: https://www.gnu.org/savannah-checkouts/gnu/bash/manual/bash.html#The-Set-Builtin.
+set -e
+
+# Source dot env file.
+source .env
+
+# Arguments.
+tags=""
+alternate_registry=""
+dry_run=""
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    --tags)
+      tags="$2"
+      shift 2
+      ;;
+    --alternate-registry)
+      alternate_registry="$2"
+      shift 2
+      ;;
+    --dry-run)
+      dry_run=$2
+      shift 2
+      ;;
+    *)
+      echo "Unknown option $1"
+      exit 1
+      ;;
+  esac
+done
+
+echo "Merge tag(s) 👷"
+echo
+
+echo "Tag(s) to merge:"
+IFS=',' read -ra tags_to_merge <<< "$tags"
+for tag in "${tags_to_merge[@]}"; do
+  echo "- $tag"
+done
+
+if [ -n "$alternate_registry" ]; then
+  echo "⚠️ Will also push to $alternate_registry registry"
+fi
+
+if [ "$dry_run" = "true" ]; then
+  echo "🚧 Dry run"
+fi
+echo
+
+# Build merge map.
+declare -A merge_map
+
+for tag in "${tags_to_merge[@]}"; do
+  target_tag="${tag//-amd64/}"
+  target_tag="${target_tag//-arm64/}"
+  target_tag="${target_tag//-arm/}"
+  target_tag="${target_tag//-386/}"
+
+  merge_map["$target_tag"]+="$tag "
+done
+
+# Merge tags.
+run_cmd() {
+  local cmd="$1"
+
+  if [ "$dry_run" = "true" ]; then
+    echo "🚧 Dry run - would run the following command:"
+    echo "$cmd"
+    echo
+  else
+    echo "⚙️ Running command:"
+    echo "$cmd"
+    eval "$cmd"
+    echo
+  fi
+}
+
+for target in "${!merge_map[@]}"; do
+  IFS=' ' read -ra source_tags <<< "${merge_map[$target]}"
+
+  cmd="docker buildx imagetools create \
+       -t $target \
+       ${source_tags[*]}
+   "
+  run_cmd "$cmd"
+
+  echo "➡️ $target pushed"
+  echo
+  if [ -n "$alternate_registry" ]; then
+    alternate_target="${target/$DOCKER_REGISTRY/$alternate_registry}"
+    cmd="docker buildx imagetools create \
+            -t $alternate_target \
+            $target
+        "
+    run_cmd "$cmd"
+
+    echo "➡️ $alternate_target pushed"
+    echo
+  fi
+done
+
+echo "✅ Done!"
+exit 0

.github/dependabot.yml

@@ -0,0 +1,18 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "docker"
+    directory: "/build"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/stale.yml

@@ -1,7 +1,7 @@
 # Number of days of inactivity before an issue becomes stale
-daysUntilStale: 60
+daysUntilStale: 7
 # Number of days of inactivity before a stale issue is closed
-daysUntilClose: 7
+daysUntilClose: 3
 # Issues with these labels will never be considered stale
 exemptLabels:
   - bug
@@ -15,4 +15,4 @@ markComment: >
   recent activity. It will be closed if no further activity occurs. Thank you
   for your contributions.
 # Comment to post when closing a stale issue. Set to `false` to disable
-closeComment: false
+closeComment: false

.github/workflows/continuous-delivery.yml

@@ -0,0 +1,116 @@
+name: Continuous Delivery
+
+on:
+  release:
+    types: [published]
+
+permissions:
+  contents: read
+
+jobs:
+  release_amd64:
+    name: Release linux/amd64
+    runs-on: ubuntu-latest
+    outputs:
+      tags: ${{ steps.build_push.outputs.tags }}
+      tags_cloud_run: ${{ steps.build_push.outputs.tags_cloud_run }}
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Build and push
+        id: build_push
+        uses: ./.github/actions/build-test-push
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          version: ${{ github.event.release.tag_name }}
+          platform: linux/amd64
+          skip_integrations_tests: true
+
+  release_386:
+    name: Release linux/386
+    runs-on: ubuntu-latest
+    outputs:
+      tags: ${{ steps.build_push.outputs.tags }}
+      tags_cloud_run: ${{ steps.build_push.outputs.tags_cloud_run }}
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Build and push
+        id: build_push
+        uses: ./.github/actions/build-test-push
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          version: ${{ github.event.release.tag_name }}
+          platform: linux/386
+          skip_integrations_tests: true
+
+  release_arm64:
+    name: Release linux/arm64
+    runs-on: ubuntu-24.04-arm
+    outputs:
+      tags: ${{ steps.build_push.outputs.tags }}
+      tags_cloud_run: ${{ steps.build_push.outputs.tags_cloud_run }}
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Build and push
+        id: build_push
+        uses: ./.github/actions/build-test-push
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          version: ${{ github.event.release.tag_name }}
+          platform: linux/arm64
+          skip_integrations_tests: true
+
+  release_arm_v7:
+    name: Release linux/arm/v7
+    runs-on: ubuntu-24.04-arm
+    outputs:
+      tags: ${{ steps.build_push.outputs.tags }}
+      tags_cloud_run: ${{ steps.build_push.outputs.tags_cloud_run }}
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Build and push
+        id: build_push
+        uses: ./.github/actions/build-test-push
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          version: ${{ github.event.release.tag_name }}
+          platform: linux/arm/v7
+          skip_integrations_tests: true
+
+  merge_clean_release_tags:
+    needs:
+      - release_amd64
+      - release_386
+      - release_arm64
+      - release_arm_v7
+    name: Merge and clean release tags
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Merge
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.release_amd64.outputs.tags }},${{ needs.release_386.outputs.tags }},${{ needs.release_arm64.outputs.tags }},${{ needs.release_arm_v7.outputs.tags }}"
+          alternate_registry: thecodingmachine
+
+      - name: Clean
+        uses: ./.github/actions/clean
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.release_amd64.outputs.tags }},${{ needs.release_386.outputs.tags }},${{ needs.release_arm64.outputs.tags }},${{ needs.release_arm_v7.outputs.tags }}"

.github/workflows/continuous-integration.yml

@@ -0,0 +1,325 @@
+name: Continuous Integration
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+concurrency:
+  group: ${{ (github.event_name == 'pull_request' && github.event.pull_request.number) || 'main' }}
+  cancel-in-progress: true
+
+permissions:
+  contents: write
+
+jobs:
+  lint:
+    name: Lint Golang codebase
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - name: Run linters
+        uses: golangci/golangci-lint-action@v8
+        with:
+          version: v2.1.6
+
+  lint-prettier:
+    name: Lint non-Golang codebase
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version-file: .node-version
+
+      - name: Install Dependencies
+        run: npm i
+
+      - name: Run linters
+        run: make lint-prettier
+
+  test-unit:
+    needs:
+      - lint
+      - lint-prettier
+    name: Run unit tests
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - name: Run tests
+        run: make test-unit
+
+  snapshot_amd64:
+    if: github.event_name == 'pull_request'
+    needs:
+      - test-unit
+    name: Snapshot linux/amd64
+    runs-on: ubuntu-latest
+    outputs:
+      tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Build, test and push
+        id: build_test_push
+        uses: ./.github/actions/build-test-push
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          version: pr-${{ github.event.pull_request.number }}
+          platform: linux/amd64
+          alternate_repository: snapshot
+
+  snapshot_386:
+    if: github.event_name == 'pull_request'
+    needs:
+      - test-unit
+    name: Snapshot linux/386
+    runs-on: ubuntu-latest
+    outputs:
+      tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Build, test and push
+        id: build_test_push
+        uses: ./.github/actions/build-test-push
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          version: pr-${{ github.event.pull_request.number }}
+          platform: linux/386
+          alternate_repository: snapshot
+
+  snapshot_arm64:
+    if: github.event_name == 'pull_request'
+    needs:
+      - test-unit
+    name: Snapshot linux/arm64
+    runs-on: ubuntu-24.04-arm
+    outputs:
+      tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Build, test and push
+        id: build_test_push
+        uses: ./.github/actions/build-test-push
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          version: pr-${{ github.event.pull_request.number }}
+          platform: linux/arm64
+          alternate_repository: snapshot
+
+  snapshot_arm_v7:
+    if: github.event_name == 'pull_request'
+    needs:
+      - test-unit
+    name: Snapshot linux/arm/v7
+    runs-on: ubuntu-24.04-arm
+    outputs:
+      tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Build, test and push
+        id: build_test_push
+        uses: ./.github/actions/build-test-push
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          version: pr-${{ github.event.pull_request.number }}
+          platform: linux/arm/v7
+          alternate_repository: snapshot
+
+  merge_clean_snapshot_guard:
+    needs:
+      - snapshot_amd64
+      - snapshot_386
+      - snapshot_arm64
+      - snapshot_arm_v7
+    name: Secrets access check
+    runs-on: ubuntu-latest
+    outputs:
+      continue: ${{ steps.check.outputs.continue }}
+    steps:
+      - name: Check
+        id: check
+        run: |
+          if [ -n "${{ secrets.DOCKERHUB_USERNAME }}" ]; then
+            echo "continue=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "continue=false" >> "$GITHUB_OUTPUT"
+          fi
+
+  merge_clean_snapshot_tags:
+    if: needs.merge_clean_snapshot_guard.outputs.continue == 'true'
+    needs:
+      - merge_clean_snapshot_guard
+      - snapshot_amd64
+      - snapshot_386
+      - snapshot_arm64
+      - snapshot_arm_v7
+    name: Merge and clean snapshot tags
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Merge
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.snapshot_amd64.outputs.tags }},${{ needs.snapshot_386.outputs.tags }},${{ needs.snapshot_arm64.outputs.tags }},${{ needs.snapshot_arm_v7.outputs.tags }}"
+
+      - name: Clean
+        uses: ./.github/actions/clean
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.snapshot_amd64.outputs.tags }},${{ needs.snapshot_386.outputs.tags }},${{ needs.snapshot_arm64.outputs.tags }},${{ needs.snapshot_arm_v7.outputs.tags }}"
+
+  edge_amd64:
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    needs:
+      - test-unit
+    name: Edge linux/amd64
+    runs-on: ubuntu-latest
+    outputs:
+      tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Build, test and push
+        id: build_test_push
+        uses: ./.github/actions/build-test-push
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          version: edge
+          platform: linux/amd64
+
+  edge_386:
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    needs:
+      - test-unit
+    name: Edge linux/386
+    runs-on: ubuntu-latest
+    outputs:
+      tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Build, test and push
+        id: build_test_push
+        uses: ./.github/actions/build-test-push
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          version: edge
+          platform: linux/386
+
+  edge_arm64:
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    needs:
+      - test-unit
+    name: Edge linux/arm64
+    runs-on: ubuntu-24.04-arm
+    outputs:
+      tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Build, test and push
+        id: build_test_push
+        uses: ./.github/actions/build-test-push
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          version: edge
+          platform: linux/arm64
+
+  edge_arm_v7:
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    needs:
+      - test-unit
+    name: Edge linux/arm/v7
+    runs-on: ubuntu-24.04-arm
+    outputs:
+      tags: ${{ steps.build_test_push.outputs.tags }}
+      tags_cloud_run: ${{ steps.build_test_push.outputs.tags_cloud_run }}
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Build, test and push
+        id: build_test_push
+        uses: ./.github/actions/build-test-push
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          version: edge
+          platform: linux/arm/v7
+
+  merge_clean_edge_tags:
+    needs:
+      - edge_amd64
+      - edge_386
+      - edge_arm64
+      - edge_arm_v7
+    name: Merge and clean edge tags
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Merge
+        uses: ./.github/actions/merge
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.edge_amd64.outputs.tags }},${{ needs.edge_386.outputs.tags }},${{ needs.edge_arm64.outputs.tags }},${{ needs.edge_arm_v7.outputs.tags }}"
+          alternate_registry: thecodingmachine
+
+      - name: Clean
+        uses: ./.github/actions/clean
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          tags: "${{ needs.edge_amd64.outputs.tags }},${{ needs.edge_386.outputs.tags }},${{ needs.edge_arm64.outputs.tags }},${{ needs.edge_arm_v7.outputs.tags }}"

.github/workflows/continuous_delivery.yml

@@ -1,27 +0,0 @@
-name: Continuous Delivery
-
-on:
-  release:
-    types: [ published ]
-
-jobs:
-
-  release:
-    name: Release Docker image
-    runs-on: ubuntu-latest
-    steps:
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
-      - name: Checkout source code
-        uses: actions/checkout@v2
-      - name: Log in to Docker Hub Container Registry
-        uses: docker/login-action@v1
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-      - name: Build and push Docker image
-        run: |
-          make release GOTENBERG_VERSION=${{ github.event.release.tag_name }}
-          make release GOTENBERG_VERSION=${{ github.event.release.tag_name }} DOCKER_REPOSITORY=thecodingmachine

.github/workflows/continuous_integration.yml

@@ -1,43 +0,0 @@
-name: Continuous Integration
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - main
-
-jobs:
-
-  lint:
-    name: Lint
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout source code
-        uses: actions/checkout@v2
-      - name: Run linters
-        uses: golangci/golangci-lint-action@v2
-        with:
-          version: v1.46
-
-  tests:
-    needs:
-      - Lint
-    name: Tests
-    # TODO: once arm64 actions are available, also run the tests on this architecture.
-    # See: https://github.com/actions/virtual-environments/issues/2552#issuecomment-771478000.
-    runs-on: ubuntu-latest
-    steps:
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
-      - name: Checkout source code
-        uses: actions/checkout@v2
-      - name: Build testing environment
-        run: make build build-tests
-      - name: Run tests
-        run: |
-          make tests-once
-          bash <(curl -s https://codecov.io/bash)

.github/workflows/pull-request-cleanup.yml

@@ -0,0 +1,24 @@
+name: Pull Request Cleanup
+
+on:
+  pull_request:
+    types: [closed]
+
+permissions:
+  contents: read
+
+jobs:
+  cleanup:
+    name: Cleanup Docker images
+    runs-on: ubuntu-latest
+    continue-on-error: true
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name: Cleanup
+        uses: ./.github/actions/clean
+        with:
+          docker_hub_username: ${{ secrets.DOCKERHUB_USERNAME }}
+          docker_hub_password: ${{ secrets.DOCKERHUB_TOKEN }}
+          snapshot_version: pr-${{ github.event.pull_request.number }}

.gitignore

@@ -1,2 +1,4 @@
-/coverage.html
-/coverage.txt
+.idea
+.vscode
+.DS_Store
+/node_modules/

.golangci.yml

@@ -1,30 +1,65 @@
+version: "2"
+run:
+  issues-exit-code: 1
+  tests: false
 linters:
-  disable-all: true
+  default: none
   enable:
+    - asasalint
+    - asciicheck
+    - bidichk
     - bodyclose
-    - deadcode
+    - copyloopvar
+    - decorder
+    - dogsled
+    - dupl
+    - dupword
+    - durationcheck
     - errcheck
-    - gofmt
-    - goimports
+    - errname
+    - exhaustive
     - gosec
-    - gosimple
     - govet
+    - importas
     - ineffassign
     - misspell
     - prealloc
+    - promlinter
     - staticcheck
-    - structcheck
-    - typecheck
+    - testableexamples
+    - tparallel
     - unconvert
     - unused
-    - varcheck
-
-run:
-  deadline: 5m
-  issues-exit-code: 1
-  tests: false
-
-output:
-  format: 'colored-line-number'
-  print-issued-lines: true
-  print-linter-name: true
+    - usetesting
+    - wastedassign
+    - whitespace
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+    paths:
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  enable:
+    - gci
+    - gofmt
+    - gofumpt
+    - goimports
+  settings:
+    gci:
+      sections:
+        - standard
+        - default
+        - prefix(github.com/gotenberg/gotenberg/v8)
+      custom-order: true
+  exclusions:
+    generated: lax
+    paths:
+      - third_party$
+      - builtin$
+      - examples$

.node-version

@@ -0,0 +1 @@
+23.9.0

.prettierignore

@@ -0,0 +1 @@
+build

.prettierrc

@@ -0,0 +1,4 @@
+{
+  "plugins": ["prettier-plugin-gherkin", "prettier-plugin-sh"],
+  "escapeBackslashes": true
+}

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2022 Julien Neuhart
+Copyright (c) Julien Neuhart
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

Makefile

@@ -1,58 +1,71 @@
+include .env
+
 .PHONY: help
 help: ## Show the help
-	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
-
-.PHONY: it
-it: build build-tests ## Initialize the development environment
-
-GOLANG_VERSION=1.18
-DOCKER_REPOSITORY=gotenberg
-GOTENBERG_VERSION=snapshot
-GOTENBERG_USER_GID=1001
-GOTENBERG_USER_UID=1001
-NOTO_COLOR_EMOJI_VERSION=v2.034 # See https://github.com/googlefonts/noto-emoji/releases.
-PDFTK_VERSION=v3.3.2 # See https://gitlab.com/pdftk-java/pdftk/-/releases - Binary package.
-GOLANGCI_LINT_VERSION=v1.46.2 # See https://github.com/golangci/golangci-lint/releases.
+	@grep -hE '^[A-Za-z0-9_ \-]*?:.*##.*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
 
 .PHONY: build
 build: ## Build the Gotenberg's Docker image
 	docker build \
-	--build-arg GOLANG_VERSION=$(GOLANG_VERSION) \
-	--build-arg GOTENBERG_VERSION=$(GOTENBERG_VERSION) \
-	--build-arg GOTENBERG_USER_GID=$(GOTENBERG_USER_GID) \
-	--build-arg GOTENBERG_USER_UID=$(GOTENBERG_USER_UID) \
-	--build-arg NOTO_COLOR_EMOJI_VERSION=$(NOTO_COLOR_EMOJI_VERSION) \
-	--build-arg PDFTK_VERSION=$(PDFTK_VERSION) \
-	-t $(DOCKER_REPOSITORY)/gotenberg:$(GOTENBERG_VERSION) \
-	-f build/Dockerfile .
+	-t $(DOCKER_REGISTRY)/$(DOCKER_REPOSITORY):$(GOTENBERG_VERSION) \
+	-f $(DOCKERFILE) $(DOCKER_BUILD_CONTEXT)
 
 GOTENBERG_GRACEFUL_SHUTDOWN_DURATION=30s
+GOTENBERG_BUILD_DEBUG_DATA=true
 API_PORT=3000
 API_PORT_FROM_ENV=
+API_BIND_IP=
+API_START_TIMEOUT=30s
 API_TIMEOUT=30s
-API_ROOT_PATH=/
+API_BODY_LIMIT=
+API_ROOT_PATH="/"
 API_TRACE_HEADER=Gotenberg-Trace
+API_ENABLE_BASIC_AUTH=false
+GOTENBERG_API_BASIC_AUTH_USERNAME=
+GOTENBERG_API_BASIC_AUTH_PASSWORD=
+API-DOWNLOAD-FROM-ALLOW-LIST=
+API-DOWNLOAD-FROM-DENY-LIST=
+API-DOWNLOAD-FROM-FROM-MAX-RETRY=4
+API-DISABLE-DOWNLOAD-FROM=false
 API_DISABLE_HEALTH_CHECK_LOGGING=false
+API_ENABLE_DEBUG_ROUTE=false
+CHROMIUM_RESTART_AFTER=10
+CHROMIUM_MAX_QUEUE_SIZE=0
+CHROMIUM_AUTO_START=false
+CHROMIUM_START_TIMEOUT=20s
 CHROMIUM_INCOGNITO=false
+CHROMIUM_ALLOW_INSECURE_LOCALHOST=false
 CHROMIUM_IGNORE_CERTIFICATE_ERRORS=false
 CHROMIUM_DISABLE_WEB_SECURITY=false
 CHROMIUM_ALLOW_FILE_ACCESS_FROM_FILES=false
+CHROMIUM_HOST_RESOLVER_RULES=
 CHROMIUM_PROXY_SERVER=
 CHROMIUM_ALLOW_LIST=
-CHROMIUM_DENY_LIST="^file:///[^tmp].*"
+CHROMIUM_DENY_LIST=^file:(?!//\/tmp/).*
+CHROMIUM_CLEAR_CACHE=false
+CHROMIUM_CLEAR_COOKIES=false
 CHROMIUM_DISABLE_JAVASCRIPT=false
 CHROMIUM_DISABLE_ROUTES=false
-LIBREOFFICE_DISABLES_ROUTES=false
+LIBREOFFICE_RESTART_AFTER=10
+LIBREOFFICE_MAX_QUEUE_SIZE=0
+LIBREOFFICE_AUTO_START=false
+LIBREOFFICE_START_TIMEOUT=20s
+LIBREOFFICE_DISABLE_ROUTES=false
 LOG_LEVEL=info
 LOG_FORMAT=auto
-PDFENGINES_ENGINES=
+LOG_FIELDS_PREFIX=
+LOG_ENABLE_GCP_FIELDS=false
+PDFENGINES_MERGE_ENGINES=qpdf,pdfcpu,pdftk
+PDFENGINES_SPLIT_ENGINES=pdfcpu,qpdf,pdftk
+PDFENGINES_FLATTEN_ENGINES=qpdf
+PDFENGINES_CONVERT_ENGINES=libreoffice-pdfengine
+PDFENGINES_READ_METADATA_ENGINES=exiftool
+PDFENGINES_WRITE_METADATA_ENGINES=exiftool
 PDFENGINES_DISABLE_ROUTES=false
 PROMETHEUS_NAMESPACE=gotenberg
 PROMETHEUS_COLLECT_INTERVAL=1s
 PROMETHEUS_DISABLE_ROUTE_LOGGING=false
 PROMETHEUS_DISABLE_COLLECT=false
-UNO_LISTENER_START_TIMEOUT=10s
-UNO_LISTENER_RESTART_THRESHOLD=10
 WEBHOOK_ALLOW_LIST=
 WEBHOOK_DENY_LIST=
 WEBHOOK_ERROR_ALLOW_LIST=
@@ -67,37 +80,66 @@ WEBHOOK_DISABLE=false
 run: ## Start a Gotenberg container
 	docker run --rm -it \
 	-p $(API_PORT):$(API_PORT) \
-	$(DOCKER_REPOSITORY)/gotenberg:$(GOTENBERG_VERSION) \
+	-e GOTENBERG_API_BASIC_AUTH_USERNAME=$(GOTENBERG_API_BASIC_AUTH_USERNAME) \
+	-e GOTENBERG_API_BASIC_AUTH_PASSWORD=$(GOTENBERG_API_BASIC_AUTH_PASSWORD) \
+	$(DOCKER_REGISTRY)/$(DOCKER_REPOSITORY):$(GOTENBERG_VERSION) \
 	gotenberg \
 	--gotenberg-graceful-shutdown-duration=$(GOTENBERG_GRACEFUL_SHUTDOWN_DURATION) \
+	--gotenberg-build-debug-data="$(GOTENBERG_BUILD_DEBUG_DATA)" \
 	--api-port=$(API_PORT) \
 	--api-port-from-env=$(API_PORT_FROM_ENV) \
+	--api-bind-ip=$(API_BIND_IP) \
+	--api-start-timeout=$(API_START_TIMEOUT) \
 	--api-timeout=$(API_TIMEOUT) \
+	--api-body-limit="$(API_BODY_LIMIT)" \
 	--api-root-path=$(API_ROOT_PATH) \
 	--api-trace-header=$(API_TRACE_HEADER) \
+	--api-enable-basic-auth=$(API_ENABLE_BASIC_AUTH) \
+	--api-download-from-allow-list=$(API-DOWNLOAD-FROM-ALLOW-LIST) \
+	--api-download-from-deny-list=$(API-DOWNLOAD-FROM-DENY-LIST) \
+	--api-download-from-max-retry=$(API-DOWNLOAD-FROM-FROM-MAX-RETRY) \
+	--api-disable-download-from=$(API-DISABLE-DOWNLOAD-FROM) \
 	--api-disable-health-check-logging=$(API_DISABLE_HEALTH_CHECK_LOGGING) \
+	--api-enable-debug-route=$(API_ENABLE_DEBUG_ROUTE) \
+	--chromium-restart-after=$(CHROMIUM_RESTART_AFTER) \
+	--chromium-auto-start=$(CHROMIUM_AUTO_START) \
+	--chromium-max-queue-size=$(CHROMIUM_MAX_QUEUE_SIZE) \
+	--chromium-start-timeout=$(CHROMIUM_START_TIMEOUT) \
 	--chromium-incognito=$(CHROMIUM_INCOGNITO) \
+	--chromium-allow-insecure-localhost=$(CHROMIUM_ALLOW_INSECURE_LOCALHOST) \
 	--chromium-ignore-certificate-errors=$(CHROMIUM_IGNORE_CERTIFICATE_ERRORS) \
 	--chromium-disable-web-security=$(CHROMIUM_DISABLE_WEB_SECURITY) \
 	--chromium-allow-file-access-from-files=$(CHROMIUM_ALLOW_FILE_ACCESS_FROM_FILES) \
+	--chromium-host-resolver-rules=$(CHROMIUM_HOST_RESOLVER_RULES) \
 	--chromium-proxy-server=$(CHROMIUM_PROXY_SERVER) \
-	--chromium-allow-list=$(CHROMIUM_ALLOW_LIST) \
-	--chromium-deny-list=$(CHROMIUM_DENY_LIST) \
+	--chromium-allow-list="$(CHROMIUM_ALLOW_LIST)" \
+	--chromium-deny-list="$(CHROMIUM_DENY_LIST)" \
+	--chromium-clear-cache=$(CHROMIUM_CLEAR_CACHE) \
+	--chromium-clear-cookies=$(CHROMIUM_CLEAR_COOKIES) \
 	--chromium-disable-javascript=$(CHROMIUM_DISABLE_JAVASCRIPT) \
 	--chromium-disable-routes=$(CHROMIUM_DISABLE_ROUTES) \
-	--libreoffice-disable-routes=$(LIBREOFFICE_DISABLES_ROUTES) \
+	--libreoffice-restart-after=$(LIBREOFFICE_RESTART_AFTER) \
+	--libreoffice-max-queue-size=$(LIBREOFFICE_MAX_QUEUE_SIZE) \
+	--libreoffice-auto-start=$(LIBREOFFICE_AUTO_START) \
+	--libreoffice-start-timeout=$(LIBREOFFICE_START_TIMEOUT) \
+	--libreoffice-disable-routes=$(LIBREOFFICE_DISABLE_ROUTES) \
 	--log-level=$(LOG_LEVEL) \
 	--log-format=$(LOG_FORMAT) \
-	--pdfengines-engines=$(PDFENGINES_ENGINES) \
+	--log-fields-prefix=$(LOG_FIELDS_PREFIX) \
+	--log-enable-gcp-fields=$(LOG_ENABLE_GCP_FIELDS) \
+	--pdfengines-merge-engines=$(PDFENGINES_MERGE_ENGINES) \
+	--pdfengines-split-engines=$(PDFENGINES_SPLIT_ENGINES) \
+	--pdfengines-flatten-engines=$(PDFENGINES_FLATTEN_ENGINES) \
+	--pdfengines-convert-engines=$(PDFENGINES_CONVERT_ENGINES) \
+	--pdfengines-read-metadata-engines=$(PDFENGINES_READ_METADATA_ENGINES) \
+	--pdfengines-write-metadata-engines=$(PDFENGINES_WRITE_METADATA_ENGINES) \
 	--pdfengines-disable-routes=$(PDFENGINES_DISABLE_ROUTES) \
 	--prometheus-namespace=$(PROMETHEUS_NAMESPACE) \
 	--prometheus-collect-interval=$(PROMETHEUS_COLLECT_INTERVAL) \
 	--prometheus-disable-route-logging=$(PROMETHEUS_DISABLE_ROUTE_LOGGING) \
 	--prometheus-disable-collect=$(PROMETHEUS_DISABLE_COLLECT) \
-	--uno-listener-start-timeout=$(UNO_LISTENER_START_TIMEOUT) \
-	--uno-listener-restart-threshold=$(UNO_LISTENER_RESTART_THRESHOLD) \
-	--webhook-allow-list=$(WEBHOOK_ALLOW_LIST) \
-	--webhook-deny-list=$(WEBHOOK_DENY_LIST) \
+	--webhook-allow-list="$(WEBHOOK_ALLOW_LIST)" \
+	--webhook-deny-list="$(WEBHOOK_DENY_LIST)" \
 	--webhook-error-allow-list=$(WEBHOOK_ERROR_ALLOW_LIST) \
 	--webhook-error-deny-list=$(WEBHOOK_ERROR_DENY_LIST) \
 	--webhook-max-retry=$(WEBHOOK_MAX_RETRY) \
@@ -106,47 +148,44 @@ run: ## Start a Gotenberg container
 	--webhook-client-timeout=$(WEBHOOK_CLIENT_TIMEOUT) \
 	--webhook-disable=$(WEBHOOK_DISABLE)
 
-.PHONY: build-tests
-build-tests: ## Build the tests' Docker image
-	docker build \
-	--build-arg GOLANG_VERSION=$(GOLANG_VERSION) \
-	--build-arg DOCKER_REPOSITORY=$(DOCKER_REPOSITORY) \
-	--build-arg GOTENBERG_VERSION=$(GOTENBERG_VERSION) \
-	--build-arg GOLANGCI_LINT_VERSION=$(GOLANGCI_LINT_VERSION) \
-	-t $(DOCKER_REPOSITORY)/gotenberg:$(GOTENBERG_VERSION)-tests \
-	-f test/Dockerfile .
+.PHONY: test-unit
+test-unit: ## Run unit tests
+	go test -race ./...
 
-.PHONY: tests
-tests: ## Start the testing environment
-	docker run --rm -it \
-	-v $(PWD):/tests \
-	$(DOCKER_REPOSITORY)/gotenberg:$(GOTENBERG_VERSION)-tests \
-	bash
+PLATFORM=
+NO_CONCURRENCY=false
 
-.PHONY: tests-once
-tests-once: ## Run the tests once (prefer the "tests" command while developing)
-	docker run --rm  \
-	-v $(PWD):/tests \
-	$(DOCKER_REPOSITORY)/gotenberg:$(GOTENBERG_VERSION)-tests \
-	gotest
+.PHONY: test-integration
+test-integration: ## Run integration tests
+	go test -timeout 20m -tags=integration -v github.com/gotenberg/gotenberg/v8/test/integration -args \
+	--gotenberg-docker-repository=$(DOCKER_REPOSITORY) \
+	--gotenberg-version=$(GOTENBERG_VERSION) \
+ 	--gotenberg-container-platform=$(PLATFORM) \
+ 	--no-concurrency=$(NO_CONCURRENCY)
+
+.PHONY: lint
+lint: ## Lint Golang codebase
+	golangci-lint run
+
+.PHONY: lint-prettier
+lint-prettier: ## Lint non-Golang codebase
+	npx prettier --check .
+
+.PHONY: lint-todo
+lint-todo: ## Find TODOs in Golang codebase
+	golangci-lint run --no-config --disable-all --enable godox
 
 .PHONY: fmt
-fmt: ## Format the code and "optimize" the dependencies
-	go fmt ./...
+fmt: ## Format Golang codebase and "optimize" the dependencies
+	golangci-lint fmt
 	go mod tidy
 
-.PHONY: godoc
-godoc: ## Run a webserver with Gotenberg godoc (go get golang.org/x/tools/cmd/godoc)
-	$(info http://localhost:6060/pkg/github.com/gotenberg/gotenberg/v7)
-	godoc -http=:6060
+.PHONY: prettify
+prettify: ## Format non-Golang codebase
+	npx prettier --write .
 
-.PHONY: release
-release: ## Build the Gotenberg's Docker image for many platforms, then push it to a Docker repository
-	./scripts/release.sh \
- 	$(GOLANG_VERSION) \
-	$(GOTENBERG_VERSION) \
-	$(GOTENBERG_USER_GID) \
-	$(GOTENBERG_USER_UID) \
-	$(NOTO_COLOR_EMOJI_VERSION) \
-	$(PDFTK_VERSION) \
-	$(DOCKER_REPOSITORY)
+# go install golang.org/x/tools/cmd/godoc@latest
+.PHONY: godoc
+godoc: ## Run a webserver with Gotenberg godoc
+	$(info http://localhost:6060/pkg/github.com/gotenberg/gotenberg/v8)
+	godoc -http=:6060

README.md

@@ -1,13 +1,22 @@
 <p align="center">
     <img src="https://user-images.githubusercontent.com/8983173/130322857-185831e2-f041-46eb-a17f-0a69d066c4e5.png" alt="Gotenberg Logo" width="150" height="150" />
     <h3 align="center">Gotenberg</h3>
-    <p align="center">A Docker-powered stateless API for PDF files</p>
-    <p align="center"><a href="https://gotenberg.dev/docs/about">Documentation</a> &#183; 🔥 <a href="https://gotenberg.dev/docs/get-started/live-demo">Live Demo</a></p>
+    <p align="center">A containerized API for seamless PDF conversion</p>
+    <p align="center">
+        <a href="https://hub.docker.com/r/gotenberg/gotenberg"><img alt="Total downloads (gotenberg/gotenberg)" src="https://img.shields.io/docker/pulls/gotenberg/gotenberg"></a>
+        <a href="https://hub.docker.com/r/thecodingmachine/gotenberg"><img alt="Total downloads (thecodingmachine/gotenberg)" src="https://img.shields.io/docker/pulls/thecodingmachine/gotenberg"></a>
+        <a href="https://github.com/gotenberg/gotenberg/actions/workflows/continuous-integration.yml"><img alt="Continuous Integration" src="https://github.com/gotenberg/gotenberg/actions/workflows/continuous-integration.yml/badge.svg"></a>
+        <a href="https://pkg.go.dev/github.com/gotenberg/gotenberg/v8"><img alt="Go Reference" src="https://pkg.go.dev/badge/github.com/gotenberg/gotenberg.svg"></a>
+    </p>
+    <p align="center">
+        <a href="https://trendshift.io/repositories/2996"><img src="https://trendshift.io/api/badge/repositories/2996" alt="gotenberg%2Fgotenberg | Trendshift" style="width: 250px; height: 55px;" width="250" height="55"/></a>
+    </p>
+    <p align="center"><a href="https://gotenberg.dev/docs/getting-started/introduction">Documentation</a> &#183; <a href="https://gotenberg.dev/docs/getting-started/installation#live-demo-">Live Demo</a> 🔥</p>
 </p>
 
 ---
 
-Gotenberg provides a developer-friendly API to interact with powerful tools like Chromium and LibreOffice for converting 
+**Gotenberg** provides a developer-friendly API to interact with powerful tools like Chromium and LibreOffice for converting
 numerous document formats (HTML, Markdown, Word, Excel, etc.) into PDF files, and more!
 
 ## Quick Start
@@ -15,31 +24,31 @@ numerous document formats (HTML, Markdown, Word, Excel, etc.) into PDF files, an
 Open a terminal and run the following command:
 
 ```
-docker run --rm -p 3000:3000 gotenberg/gotenberg:7
+docker run --rm -p 3000:3000 gotenberg/gotenberg:8
 ```
 
 Alternatively, using the historic Docker repository from our sponsor [TheCodingMachine](https://www.thecodingmachine.com):
 
 ```
-docker run --rm -p 3000:3000 thecodingmachine/gotenberg:7
+docker run --rm -p 3000:3000 thecodingmachine/gotenberg:8
 ```
 
 The API is now available on your host at http://localhost:3000.
 
-Head to the [documentation](https://gotenberg.dev/docs/about) to learn how to interact with it 🚀
+Head to the [documentation](https://gotenberg.dev/docs/getting-started/introduction) to learn how to interact with it 🚀
 
 ## Sponsors
 
 <p align="center">
     <a href="https://thecodingmachine.com">
-        <img src="https://user-images.githubusercontent.com/8983173/130324668-9d6e7b35-53a3-49c7-a574-38190d2bd6b0.png" alt="TheCodingMachine Logo" width="429" height="210" />
+        <img src="https://user-images.githubusercontent.com/8983173/130324668-9d6e7b35-53a3-49c7-a574-38190d2bd6b0.png" alt="TheCodingMachine Logo" width="333" height="163" />
+    </a>
+    <a href="https://zolsec.com?utm_source=gotenberg_github&utm_medium=website" target="_blank">
+        <img src="https://github.com/gotenberg/gotenberg/assets/8983173/707ccc97-a79b-4dcb-8fc8-6827366e5be3" alt="Zolsec Logo" width="333" height="163" />
+    </a>
+    <a href="https://pdfme.com?utm_source=gotenberg_github&utm_medium=website" target="_blank">
+        <img src="https://github.com/user-attachments/assets/2a75dd40-ca18-4d34-acd5-5dd474595168" alt="pdfme Logo" width="333" height="163" />
     </a>
 </p>
 
-## Badges
-
-[![Docker pulls](https://img.shields.io/docker/pulls/gotenberg/gotenberg)](https://hub.docker.com/r/gotenberg/gotenberg)
-[![Docker pulls](https://img.shields.io/docker/pulls/thecodingmachine/gotenberg)](https://hub.docker.com/r/thecodingmachine/gotenberg)
-[![Continuous Integration](https://github.com/gotenberg/gotenberg/actions/workflows/continuous_integration.yml/badge.svg)](https://github.com/gotenberg/gotenberg/actions/workflows/continuous_integration.yml)
-[![Go Reference](https://pkg.go.dev/badge/github.com/gotenberg/gotenberg.svg)](https://pkg.go.dev/github.com/gotenberg/gotenberg/v7)
-[![Codecov](https://codecov.io/gh/gotenberg/gotenberg/branch/main/graph/badge.svg)](https://codecov.io/gh/gotenberg/gotenberg)
+Sponsorships help maintain and improve Gotenberg - [become a sponsor](https://github.com/sponsors/gulien) ❤️

SECURITY.md

@@ -0,0 +1,41 @@
+# Security Policy
+
+## Supported Versions
+
+Please ensure to keep your environment up to date and use only the latest version of Gotenberg.
+Security updates and patches will be applied only to the most recent version.
+
+## Reporting a Vulnerability
+
+Your help in identifying vulnerabilities in our project is much appreciated.
+We take all reports regarding security seriously.
+
+If you discover a security vulnerability, please refrain from publishing it publicly.
+Instead, kindly send us the details via email to _neuhart [dot] julien [at] gmail [dot] com_.
+
+In the subject of your email, please indicate that it's a security vulnerability report for Gotenberg.
+In your message, please include:
+
+- A detailed description of the vulnerability.
+- The steps to reproduce the issue.
+- Any potential impact of the vulnerability on the users or system.
+
+Please remember that this process is done in a _'best-effort'_ manner.
+This means we strive to respond and act as quickly as possible, but the speed may vary depending on the severity of
+the issue and our resources.
+
+Thank you in advance for helping to keep our project safe!
+
+## Disclosure Policy
+
+Once we have received your vulnerability report, we will work to validate and reproduce the issue.
+If we can confirm the vulnerability, we will proceed to:
+
+- Work on a fix and a release timeline.
+- Notify you when the fix has been implemented and released.
+- Credit you for discovering the vulnerability (unless you request anonymity).
+- Please note that we will do our best to keep you informed about the progress towards resolving the issue.
+
+## Comments on this Policy
+
+If you have suggestions on how this process could be improved, please submit a pull request.

build/Dockerfile

@@ -1,12 +1,40 @@
-# Note: ARG instructions do not create additional layers.
-# Instead, next layers will concatenate them.
-ARG GOLANG_VERSION
-# Note: we have to repeat ARG instructions in each build stage that uses them.
-ARG GOTENBERG_VERSION
+# ARG instructions do not create additional layers. Instead, next layers will
+# concatenate them. Also, we have to repeat ARG instructions in each build
+# stage that uses them.
+ARG GOLANG_VERSION=1.24
 
-FROM golang:$GOLANG_VERSION AS builder
+# ----------------------------------------------
+# pdfcpu binary build stage
+# ----------------------------------------------
+# Note: this stage is required as pdfcpu does not release an armhf variant by
+# default.
+FROM golang:$GOLANG_VERSION AS pdfcpu-binary-stage
 
-ENV CGO_ENABLED 0
+# See https://github.com/pdfcpu/pdfcpu/releases.
+ARG PDFCPU_VERSION=v0.8.1 
+ENV CGO_ENABLED=0
+
+# Define the working directory outside of $GOPATH (we're using go modules).
+WORKDIR /home
+
+RUN curl -Ls "https://github.com/pdfcpu/pdfcpu/archive/refs/tags/$PDFCPU_VERSION.tar.gz" -o pdfcpu.tar.gz &&\
+    tar --strip-components=1 -xvzf pdfcpu.tar.gz
+
+# Install module dependencies.
+RUN go mod download &&\
+    go mod verify
+
+RUN go build -o pdfcpu -ldflags "-s -w -X 'main.version=$PDFCPU_VERSION' -X 'github.com/pdfcpu/pdfcpu/pkg/pdfcpu.VersionStr=$PDFCPU_VERSION' -X main.builtBy=gotenberg" ./cmd/pdfcpu &&\
+    # Verify installation.
+    ./pdfcpu version
+
+# ----------------------------------------------
+# Gotenberg binary build stage
+# ----------------------------------------------
+FROM golang:$GOLANG_VERSION AS gotenberg-binary-stage
+
+ARG GOTENBERG_VERSION=snapshot
+ENV CGO_ENABLED=0
 
 # Define the working directory outside of $GOPATH (we're using go modules).
 WORKDIR /home
@@ -21,40 +49,77 @@ RUN go mod download &&\
 COPY cmd ./cmd
 COPY pkg ./pkg
 
-# Build the binary.
-ARG GOTENBERG_VERSION
+RUN go build -o gotenberg -ldflags "-s -w -X 'github.com/gotenberg/gotenberg/v8/cmd.Version=$GOTENBERG_VERSION'" cmd/gotenberg/main.go
 
-RUN go build -o gotenberg -ldflags "-X 'github.com/gotenberg/gotenberg/v7/cmd.Version=$GOTENBERG_VERSION'" cmd/gotenberg/main.go
+# ----------------------------------------------
+# Compress Golang binaries stage
+# ----------------------------------------------
+FROM debian:12-slim AS compress-go-binaries-stage
 
-FROM debian:11-slim
+RUN \
+    echo "deb http://deb.debian.org/debian bookworm-backports main" >> /etc/apt/sources.list &&\
+    apt-get update -qq &&\
+    apt-get upgrade -yqq &&\
+    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends -t bookworm-backports upx-ucl
 
-ARG GOTENBERG_VERSION
+COPY --from=pdfcpu-binary-stage /home/pdfcpu /home/pdfcpu
+COPY --from=gotenberg-binary-stage /home/gotenberg /home/gotenberg
 
-LABEL author="Julien Neuhart" \
-      description="A Docker-powered stateless API for PDF files." \
-      github="https://github.com/gotenberg/gotenberg" \
-      version="$GOTENBERG_VERSION" \
-      website="https://gotenberg.dev"
+RUN \
+    upx-ucl --best /home/pdfcpu &&\
+    upx-ucl --best /home/gotenberg
 
-# Improve fonts subpixel hinting and smoothing.
-# Credits:
-# https://github.com/arachnys/athenapdf/issues/69.
-# https://github.com/arachnys/athenapdf/commit/ba25a8d80a25d08d58865519c4cd8756dc9a336d.
-COPY build/fonts.conf /etc/fonts/conf.d/100-gotenberg.conf
+# ----------------------------------------------
+# Custom JRE stage
+# Credits: https://github.com/jodconverter/docker-image-jodconverter-runtime
+# ----------------------------------------------
+FROM debian:12-slim AS custom-jre-stage
 
-# Simple wrapper around Java and PDFtk.
-COPY build/pdftk.sh /usr/bin/pdftk
+RUN \
+    apt-get update -qq &&\
+    apt-get upgrade -yqq &&\
+    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends default-jdk-headless binutils
 
-# Setup the Docker image.
-ARG GOTENBERG_USER_GID
-ARG GOTENBERG_USER_UID
-ARG NOTO_COLOR_EMOJI_VERSION
-ARG PDFTK_VERSION
+# Note: jdeps helps finding which modules a JAR requires.
+# Currently only for PDFtk, as we don't rely on LibreOffice UNO Java SDK.
+ENV JAVA_MODULES=java.base,java.desktop,java.naming,java.sql
 
-# Script for installing either Google Chrome stable on amd64 architecture or
-# Chromium on other architectures.
-# See https://github.com/gotenberg/gotenberg/issues/328.
-COPY build/install-chromium.sh /tmp/install-chromium.sh
+RUN jlink \
+    --add-modules $JAVA_MODULES \
+    --strip-debug \
+    --no-man-pages \
+    --no-header-files \
+    --compress=2 \
+    --output /custom-jre
+
+# ----------------------------------------------
+# Base image stage
+# ----------------------------------------------
+FROM debian:12-slim AS base-image-stage
+
+COPY --from=custom-jre-stage /custom-jre /opt/java
+
+ENV PATH="/opt/java/bin:${PATH}"
+
+# ----------------------------------------------
+# Final stage
+# ----------------------------------------------
+FROM base-image-stage
+
+ARG GOTENBERG_VERSION=snapshot
+ARG GOTENBERG_USER_GID=1001
+ARG GOTENBERG_USER_UID=1001
+# See https://github.com/googlefonts/noto-emoji/releases.
+ARG NOTO_COLOR_EMOJI_VERSION=v2.047
+# See https://gitlab.com/pdftk-java/pdftk/-/releases - Binary package.
+ARG PDFTK_VERSION=v3.3.3
+
+LABEL org.opencontainers.image.title="Gotenberg" \
+    org.opencontainers.image.description="A containerized API for seamless PDF conversion." \
+    org.opencontainers.image.version="$GOTENBERG_VERSION" \
+    org.opencontainers.image.authors="Julien Neuhart <neuhart.julien@gmail.com>" \
+    org.opencontainers.image.documentation="https://gotenberg.dev" \
+    org.opencontainers.image.source="https://github.com/gotenberg/gotenberg"
 
 RUN \
     # Create a non-root user.
@@ -62,104 +127,165 @@ RUN \
     groupadd --gid "$GOTENBERG_USER_GID" gotenberg &&\
     useradd --uid "$GOTENBERG_USER_UID" --gid gotenberg --shell /bin/bash --home /home/gotenberg --no-create-home gotenberg &&\
     mkdir /home/gotenberg &&\
-    chown gotenberg: /home/gotenberg &&\
-    # Install dependencies required for the next instructions or debugging.
+    chown gotenberg: /home/gotenberg
+
+RUN \
+    # Install system dependencies required for the next instructions or debugging.
     # Note: tini is a helper for reaping zombie processes.
     apt-get update -qq &&\
-    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends curl gnupg htop tini python3 default-jre-headless &&\
-    ln -s /usr/bin/htop /usr/bin/top &&\
+    apt-get upgrade -yqq &&\
+    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends curl gnupg=2.2.40-1.1 tini=0.19.0-1 python3=3.11.2-1+b1 &&\
+    # Cleanup.
+    # Note: the Debian image does automatically a clean after each install thanks to a hook.
+    # Therefore, there is no need for apt-get clean.
+    # See https://stackoverflow.com/a/24417119/3248473.
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+RUN \
     # Install fonts.
     # Credits:
     # https://github.com/arachnys/athenapdf/blob/master/cli/Dockerfile.
     # https://help.accusoft.com/PrizmDoc/v12.1/HTML/Installing_Asian_Fonts_on_Ubuntu_and_Debian.html.
-    curl -o ./ttf-mscorefonts-installer_3.8_all.deb http://httpredir.debian.org/debian/pool/contrib/m/msttcorefonts/ttf-mscorefonts-installer_3.8_all.deb &&\
+    curl -o ./ttf-mscorefonts-installer_3.8.1_all.deb http://httpredir.debian.org/debian/pool/contrib/m/msttcorefonts/ttf-mscorefonts-installer_3.8.1_all.deb &&\
+    apt-get update -qq &&\
+    apt-get upgrade -yqq &&\
     DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends \
-    ./ttf-mscorefonts-installer_3.8_all.deb \
-    culmus \
-    fonts-beng \
-    fonts-hosny-amiri \
-    fonts-lklug-sinhala \
-    fonts-lohit-guru \
-    fonts-lohit-knda \
-    fonts-samyak-gujr \
-    fonts-samyak-mlym \
-    fonts-samyak-taml \
-    fonts-sarai \
-    fonts-sil-abyssinica \
-    fonts-sil-padauk \
-    fonts-telu \
-    fonts-thai-tlwg \
+    ./ttf-mscorefonts-installer_3.8.1_all.deb \
+    culmus=0.133-1 \
+    fonts-beng=2:1.3 \
+    fonts-hosny-amiri=0.113-1 \
+    fonts-lklug-sinhala=0.6-4 \
+    fonts-lohit-guru=2.91.2-3 \
+    fonts-lohit-knda=2.5.4-3 \
+    fonts-samyak-gujr=1.2.2-6 \
+    fonts-samyak-mlym=1.2.2-6 \
+    fonts-samyak-taml=1.2.2-6 \
+    fonts-sarai=1.0-3 \
+    fonts-sil-abyssinica=2.100-3 \
+    fonts-sil-padauk=5.000-3 \
+    fonts-telu=2:1.3 \
+    fonts-thai-tlwg=1:0.7.3-1 \
     ttf-wqy-zenhei \
-    fonts-arphic-ukai \
-    fonts-arphic-uming \
-    fonts-ipafont-mincho \
-    fonts-ipafont-gothic \
-    fonts-unfonts-core \
+    fonts-arphic-ukai=0.2.20080216.2-5 \
+    fonts-arphic-uming=0.2.20080216.2-11 \
+    fonts-ipafont-mincho=00303-23 \
+    fonts-ipafont-gothic=00303-23 \
+    fonts-unfonts-core=1:1.0.2-080608-18 \
     # LibreOffice recommends.
-    fonts-crosextra-caladea \
-    fonts-crosextra-carlito \
-    fonts-dejavu \
-    fonts-dejavu-extra \
-    fonts-liberation \
-    fonts-liberation2 \
-    fonts-linuxlibertine \
-    fonts-noto-cjk \
-    fonts-noto-core \
-    fonts-noto-mono \
-    fonts-noto-ui-core \
-    fonts-sil-gentium \
-    fonts-sil-gentium-basic &&\
-    rm -f ./ttf-mscorefonts-installer_3.8_all.deb &&\
+    fonts-crosextra-caladea=20200211-1 \
+    fonts-crosextra-carlito=20220224-1 \
+    fonts-dejavu=2.37-6 \
+    fonts-dejavu-extra=2.37-6 \
+    fonts-liberation=1:1.07.4-11 \
+    fonts-liberation2=2.1.5-1 \
+    fonts-linuxlibertine=5.3.0-6 \
+    fonts-noto-cjk=1:20220127+repack1-1 \
+    fonts-noto-core=20201225-1 \
+    fonts-noto-mono=20201225-1 \
+    fonts-noto-ui-core=20201225-1 \
+    fonts-sil-gentium=20081126:1.03-4 \
+    fonts-sil-gentium-basic=1.102-1.1 &&\
+    rm -f ./ttf-mscorefonts-installer_3.8.1_all.deb &&\
     # Add Color and Black-and-White Noto emoji font.
     # Credits:
     # https://github.com/gotenberg/gotenberg/pull/325.
     # https://github.com/googlefonts/noto-emoji.
     curl -Ls "https://github.com/googlefonts/noto-emoji/raw/$NOTO_COLOR_EMOJI_VERSION/fonts/NotoColorEmoji.ttf" -o /usr/local/share/fonts/NotoColorEmoji.ttf &&\
-    # Install Google Chrome / Chromium.
-    /tmp/install-chromium.sh &&\
-    # Install LibreOffice.
-    # Note: we use the bullseye-backports distribution to get the latest LibreOffice version.
-    # See:
-    # https://github.com/gotenberg/gotenberg/pull/322.
-    # https://github.com/gotenberg/gotenberg/issues/403.
-    echo "deb https://httpredir.debian.org/debian/ bullseye-backports main contrib non-free" >> /etc/apt/sources.list &&\
+    # Cleanup.
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+RUN \
+    # Install either Google Chrome stable on amd64 architecture or
+    # Chromium on other architectures.
+    # See https://github.com/gotenberg/gotenberg/issues/328.
+    /bin/bash -c \
+    'set -e &&\
+    if [[ "$(dpkg --print-architecture)" == "amd64" ]]; then \
+    curl https://dl.google.com/linux/linux_signing_key.pub | apt-key add - &&\
+    echo "deb http://dl.google.com/linux/chrome/deb/ stable main" | tee /etc/apt/sources.list.d/google-chrome.list &&\
     apt-get update -qq &&\
-    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends -t bullseye-backports libreoffice &&\
-    # Download unoconv (Python script).
-    curl -Ls https://raw.githubusercontent.com/dagwieers/unoconv/master/unoconv -o /usr/bin/unoconv &&\
-    chmod +x /usr/bin/unoconv &&\
-    # unoconv will look for the Python binary, which has to be at version 3.
+    apt-get upgrade -yqq &&\
+    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends --allow-unauthenticated google-chrome-stable &&\
+    mv /usr/bin/google-chrome-stable /usr/bin/chromium; \
+    else \
+    apt-get update -qq &&\
+    apt-get upgrade -yqq &&\
+    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends chromium; \
+    fi' &&\
+    # Verify installation.
+    chromium --version &&\
+    # Cleanup.
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+# Set default characterset encoding to UTF-8.
+# See:
+# https://github.com/gotenberg/gotenberg/issues/104
+# https://github.com/gotenberg/gotenberg/issues/730
+ENV LANG=C.UTF-8
+ENV LC_ALL=C.UTF-8
+
+RUN \
+    # Install LibreOffice & unoconverter.
+    echo "deb http://deb.debian.org/debian bookworm-backports main" >> /etc/apt/sources.list &&\
+    apt-get update -qq &&\
+    apt-get upgrade -yqq &&\
+    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends -t bookworm-backports libreoffice &&\
+    curl -Ls https://raw.githubusercontent.com/gotenberg/unoconverter/v0.1.1/unoconv -o /usr/bin/unoconverter &&\
+    chmod +x /usr/bin/unoconverter &&\
+    # unoconverter will look for the Python binary, which has to be at version 3.
     ln -s /usr/bin/python3 /usr/bin/python &&\
-    # Download PDFtk.
-    # See https://github.com/gotenberg/gotenberg/pull/273. \
+    # Verify installations.
+    libreoffice --version &&\
+    unoconverter --version &&\
+    # Cleanup.
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
+RUN \
+    # Install PDFtk, QPDF & ExifTool (PDF engines).
+    # See https://github.com/gotenberg/gotenberg/pull/273.
     curl -o /usr/bin/pdftk-all.jar "https://gitlab.com/api/v4/projects/5024297/packages/generic/pdftk-java/$PDFTK_VERSION/pdftk-all.jar" &&\
     chmod a+x /usr/bin/pdftk-all.jar &&\
-    # Download QPDF.
-    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends qpdf &&\
+    printf '#!/bin/bash\n\nexec java -jar /usr/bin/pdftk-all.jar "$@"' > /usr/bin/pdftk && \
+    chmod +x /usr/bin/pdftk &&\
+    apt-get update -qq &&\
+    apt-get upgrade -yqq &&\
+    DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends qpdf=11.3.0-1+deb12u1 exiftool &&\
     # See https://github.com/nextcloud/docker/issues/380.
-    mkdir -p /usr/share/man/man1mkdir -p /usr/share/man/man1 &&\
-    # Cleanup.
-    # Note: the Debian image does automatically a clean after each install thanks to a hook.
-    # Therefore, there is no need for apt-get clean.
-    # See https://stackoverflow.com/a/24417119/3248473.
-    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* &&\
-    # Print versions of main dependencies.
-    chromium --version &&\
-    libreoffice --version &&\
-    unoconv --version &&\
+    mkdir -p /usr/share/man/man1 &&\
+    # Verify installations.
     pdftk --version &&\
-    qpdf --version
+    qpdf --version &&\
+    exiftool --version &&\
+    # Cleanup.
+    rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
-# Copy the Gotenberg binary from the builder stage.
-COPY --from=builder /home/gotenberg /usr/bin/
+# Support for arbitrary user ids (OpenShift).
+# See:
+# https://github.com/gotenberg/gotenberg/issues/1049.
+# https://docs.redhat.com/en/documentation/openshift_container_platform/4.15/html/images/creating-images#use-uid_create-images.
+RUN \
+    usermod -aG root gotenberg &&\
+    chgrp -R 0 /home/gotenberg &&\
+    chmod -R g=u /home/gotenberg
+
+# Improve fonts subpixel hinting and smoothing.
+# Credits:
+# https://github.com/arachnys/athenapdf/issues/69.
+# https://github.com/arachnys/athenapdf/commit/ba25a8d80a25d08d58865519c4cd8756dc9a336d.
+COPY build/fonts.conf /etc/fonts/conf.d/100-gotenberg.conf
+
+# Copy the Golang binaries.
+COPY --from=compress-go-binaries-stage /home/pdfcpu /usr/bin/
+COPY --from=compress-go-binaries-stage /home/gotenberg /usr/bin/
 
 # Environment variables required by modules or else.
-ENV GC_EXCLUDE_SUBSTR "hsperfdata_root,hsperfdata_gotenberg"
-ENV CHROMIUM_BIN_PATH /usr/bin/chromium
-ENV UNOCONV_BIN_PATH /usr/bin/unoconv
-ENV LIBREOFFICE_BIN_PATH /usr/lib/libreoffice/program/soffice.bin
-ENV PDFTK_BIN_PATH /usr/bin/pdftk
-ENV QPDF_BIN_PATH /usr/bin/qpdf
+ENV CHROMIUM_BIN_PATH=/usr/bin/chromium
+ENV LIBREOFFICE_BIN_PATH=/usr/lib/libreoffice/program/soffice.bin
+ENV UNOCONVERTER_BIN_PATH=/usr/bin/unoconverter
+ENV PDFTK_BIN_PATH=/usr/bin/pdftk
+ENV QPDF_BIN_PATH=/usr/bin/qpdf
+ENV EXIFTOOL_BIN_PATH=/usr/bin/exiftool
+ENV PDFCPU_BIN_PATH=/usr/bin/pdfcpu
 
 USER gotenberg
 WORKDIR /home/gotenberg

build/Dockerfile.cloudrun

@@ -1,9 +1,8 @@
-# Note: ARG instructions do not create additional layers.
-# Instead, next layers will concatenate them.
+ARG DOCKER_REGISTRY
 ARG DOCKER_REPOSITORY
 ARG GOTENBERG_VERSION
 
-FROM $DOCKER_REPOSITORY/gotenberg:$GOTENBERG_VERSION
+FROM $DOCKER_REGISTRY/$DOCKER_REPOSITORY:$GOTENBERG_VERSION
 
 USER root
 

build/install-chromium.sh

@@ -1,15 +0,0 @@
-#!/bin/bash
-
-set -e
-
-ARCH=$(dpkg --print-architecture)
-
-if [[ "$ARCH" == "amd64" ]]; then
-  curl https://dl.google.com/linux/linux_signing_key.pub | apt-key add -
-  echo "deb http://dl.google.com/linux/chrome/deb/ stable main" | tee /etc/apt/sources.list.d/google-chrome.list
-  apt-get update -qq
-  DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends --allow-unauthenticated google-chrome-stable
-  mv /usr/bin/google-chrome-stable /usr/bin/chromium
-else
-  DEBIAN_FRONTEND=noninteractive apt-get install -y -qq --no-install-recommends chromium
-fi

build/pdftk.sh

@@ -1,3 +0,0 @@
-#!/bin/bash
-
-exec java -jar /usr/bin/pdftk-all.jar "$@"

cmd/gotenberg.go

@@ -2,14 +2,18 @@ package gotenbergcmd
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"os"
 	"os/signal"
+	"strings"
+	"syscall"
 	"time"
 
-	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
 	flag "github.com/spf13/pflag"
 	"golang.org/x/sync/errgroup"
+
+	"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
 )
 
 // See https://patorjk.com/software/taag/#p=display&f=Small%20Slant&t=Gotenberg.
@@ -21,7 +25,7 @@ const banner = `
 \___/\___/\__/\__/_//_/_.__/\__/_/  \_, / 
                                    /___/
 
-A Docker-powered stateless API for PDF files.
+A containerized API for seamless PDF conversion.
 Version: %s
 -------------------------------------------------------
 `
@@ -33,10 +37,12 @@ var Version = "snapshot"
 // Run starts the Gotenberg application. Call this in the main of your program.
 func Run() {
 	fmt.Printf(banner, Version)
+	gotenberg.Version = Version
 
 	// Create the root FlagSet and adds the modules flags to it.
 	fs := flag.NewFlagSet("gotenberg", flag.ExitOnError)
 	fs.Duration("gotenberg-graceful-shutdown-duration", time.Duration(30)*time.Second, "Set the graceful shutdown duration")
+	fs.Bool("gotenberg-build-debug-data", true, "Set if build data is needed")
 
 	descriptors := gotenberg.GetModuleDescriptors()
 	var modsInfo string
@@ -47,14 +53,42 @@ func Run() {
 
 	fmt.Printf("[SYSTEM] modules: %s\n", modsInfo)
 
-	// Parse the flags...
+	// Parse the flags.
 	err := fs.Parse(os.Args[1:])
 	if err != nil {
 		fmt.Println(err)
 		os.Exit(1)
 	}
 
-	// ...and create a wrapper around those.
+	// Override their values if the corresponding environment variables are
+	// set.
+	fs.VisitAll(func(f *flag.Flag) {
+		envName := strings.ToUpper(strings.ReplaceAll(f.Name, "-", "_"))
+		val, ok := os.LookupEnv(envName)
+		if !ok {
+			return
+		}
+
+		sliceVal, ok := f.Value.(flag.SliceValue)
+		if ok {
+			// We don't want to append the values (default pflag behavior).
+			items := strings.Split(val, ",")
+			err = sliceVal.Replace(items)
+			if err != nil {
+				fmt.Printf("[FATAL] invalid overriding value '%s' from %s: %v\n", val, envName, err)
+				os.Exit(1)
+			}
+			return
+		}
+
+		err = f.Value.Set(val)
+		if err != nil {
+			fmt.Printf("[FATAL] invalid overriding value '%s' from %s: %v\n", val, envName, err)
+			os.Exit(1)
+		}
+	})
+
+	// Create a wrapper around our flags.
 	parsedFlags := gotenberg.ParsedFlags{FlagSet: fs}
 
 	// Get the graceful shutdown duration.
@@ -73,7 +107,6 @@ func Run() {
 		go func(app gotenberg.App) {
 			id := app.(gotenberg.Module).Descriptor().ID
 			err = app.Start()
-
 			if err != nil {
 				fmt.Printf("[FATAL] starting %s: %s\n", id, err)
 				os.Exit(1)
@@ -82,7 +115,6 @@ func Run() {
 			startupMessage := app.StartupMessage()
 			if startupMessage == "" {
 				fmt.Printf("[SYSTEM] %s: application started\n", id)
-
 				return
 			}
 
@@ -107,10 +139,15 @@ func Run() {
 		}(l.(gotenberg.SystemLogger))
 	}
 
+	if parsedFlags.MustBool("gotenberg-build-debug-data") {
+		// Build the debug data.
+		gotenberg.BuildDebug(ctx)
+	}
+
 	quit := make(chan os.Signal, 1)
 
-	// We'll accept graceful shutdowns when quit via SIGINT (Ctrl+C).
-	signal.Notify(quit, os.Interrupt)
+	// We'll accept graceful shutdowns when quit via SIGINT (Ctrl+C) or SIGTERM (Kubernetes).
+	signal.Notify(quit, syscall.SIGINT, syscall.SIGTERM)
 
 	// Block until we receive our signal.
 	<-quit
@@ -119,7 +156,7 @@ func Run() {
 	defer cancel()
 
 	forceQuit := make(chan os.Signal, 1)
-	signal.Notify(forceQuit, os.Interrupt)
+	signal.Notify(forceQuit, syscall.SIGINT)
 
 	go func() {
 		// In case of force quit, cancel the context.
@@ -137,12 +174,13 @@ func Run() {
 				id := app.(gotenberg.Module).Descriptor().ID
 
 				err = app.Stop(gracefulShutdownCtx)
-				if err != nil {
+				if errors.Is(err, gotenberg.ErrCancelGracefulShutdownContext) {
+					cancel()
+				} else if err != nil {
 					return fmt.Errorf("stopping %s: %w", id, err)
 				}
 
 				fmt.Printf("[SYSTEM] %s: application stopped\n", id)
-
 				return nil
 			}
 		}(a.(gotenberg.App)))

cmd/gotenberg/main.go

@@ -1,10 +1,9 @@
 package main
 
 import (
-	gotenbergcmd "github.com/gotenberg/gotenberg/v7/cmd"
-
+	gotenbergcmd "github.com/gotenberg/gotenberg/v8/cmd"
 	// Gotenberg modules.
-	_ "github.com/gotenberg/gotenberg/v7/pkg/standard"
+	_ "github.com/gotenberg/gotenberg/v8/pkg/standard"
 )
 
 func main() {

docs/openapi.yaml

@@ -1,730 +0,0 @@
-openapi: 3.0.3
-info:
-  title: Gotenberg
-  version: 7.x
-  license:
-    name: MIT
-    url: 'https://github.com/gotenberg/gotenberg/blob/main/LICENSE'
-  contact:
-    url: 'https://github.com/gotenberg/gotenberg'
-  description: >-
-    A Docker-powered stateless API for PDF files.
-externalDocs:
-  url: https://gotenberg.dev
-servers:
-  - url: 'http://localhost:3000'
-    description: Local server with the default Docker image and port
-tags:
-  - name: chromium
-    description: Operations of the Chromium module
-    externalDocs:
-      url: https://gotenberg.dev/docs/modules/chromium
-  - name: libreoffice
-    description: Operations of the Libreoffice module
-    externalDocs:
-      url: https://gotenberg.dev/docs/modules/libreoffice
-  - name: pdfengines
-    description: Operations of the PDF Engines module
-    externalDocs:
-      url: https://gotenberg.dev/docs/modules/pdf-engines
-paths:
-  /forms/chromium/convert/url:
-    post:
-      tags:
-        - chromium
-      summary: Convert the contents of a given URL to PDF
-      externalDocs:
-        url: https://gotenberg.dev/docs/modules/chromium
-      description: >-
-        Send a URL in your API request via the `url` form field
-        Send a remote URL in your API request via the `remoteURL` parameter, and
-        get the resulting PDF file. The API will fetch the given URL and render
-        the page to PDF using the underlying headless Chrome instance.
-        You can optionally include `header.html` and `footer.html` files as part of the request as well.
-        See externalDocs for more details.
-      parameters:
-        - in: header
-          name: Gotenberg-Output-Filename
-          description: >-
-            By default, the API generates a UUID filename.
-            However, you may also specify the filename per request,
-            thanks to the Gotenberg-Output-Filename header.
-            Caution! The API adds the file extension automatically; you don't have to set it.
-          schema:
-            type: string
-          required: false
-        - in: header
-          name: Gotenberg-Trace
-          description: >-
-            The trace, or request ID, identifies a request in the logs.
-
-            By default, the API generates a UUID trace for each request.
-            However, you may also specify the trace per request, thanks to the Gotenberg-Trace header.
-          schema:
-            type: string
-          required: false
-      requestBody:
-        required: true
-        description: >-
-          The request must be  `multipart/form-data` that includes a `url` form field.
-          The API uses a headless Chrome instance to do the conversion, therefore print
-          parameter such as margins and paper size are also accepted as optional parameters.
-        content:
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/URLConvertRequestBody'
-            examples: { }
-      responses:
-        '200':
-          $ref: '#/components/responses/SuccessfulPDF'
-        '400':
-          description: Bad Request
-
-  /forms/chromium/convert/html:
-    post:
-      tags:
-        - chromium
-      summary: Convert a given HTML file to PDF
-      externalDocs:
-        url: https://gotenberg.dev/docs/modules/chromium
-      description: >-
-        Send an HTML file called `index.html` as a multipart form request, and
-        get the resulting PDF file. You can optionally include `header.html` and
-        `footer.html` files as part of the request as well.
-        See externalDocs for more details.
-      parameters:
-        - in: header
-          name: Gotenberg-Output-Filename
-          description: >-
-            By default, the API generates a UUID filename.
-            However, you may also specify the filename per request,
-            thanks to the Gotenberg-Output-Filename header.
-            Caution! The API adds the file extension automatically; you don't have to set it.
-          schema:
-            type: string
-          required: false
-        - in: header
-          name: Gotenberg-Trace
-          description: >-
-            The trace, or request ID, identifies a request in the logs.
-
-            By default, the API generates a UUID trace for each request.
-            However, you may also specify the trace per request, thanks to the Gotenberg-Trace header.
-          schema:
-            type: string
-          required: false
-      requestBody:
-        content:
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/HTMLConvertRequestBody'
-        description: >-
-          The request body must have an `index.html` file in the `files` array,
-          as well as all the referred resources on the same level as the
-          `index.html` file. The request can also include `header.html` and
-          `footer.html`, given the limitations in the API description above.
-      responses:
-        '200':
-          $ref: '#/components/responses/SuccessfulPDF'
-        '400':
-          description: Bad Request
-
-  /forms/chromium/convert/markdown:
-    post:
-      tags:
-        - chromium
-      summary: Convert a Markdown file to PDF
-      externalDocs:
-        url: https://gotenberg.dev/docs/modules/chromium
-      description: >-
-        Accepts an HTML file called `index.html` plus markdown files as a multipart
-        form request and embeds the markdown files into the HTML file using the Golang template
-        function `toHTML`.
-        The API will convert the markdown to HTML and embed it into your `index.html` file,
-        then render the resulting page. You can include your own styling and more in your HTML file.
-        Refer to the HTML conversion page for all the options you can use when converting
-        Markdown documents as well. You can optionally include `header.html` and
-        `footer.html` files as part of the request as well.
-        See externalDocs for more details.
-      parameters:
-        - in: header
-          name: Gotenberg-Output-Filename
-          description: >-
-            By default, the API generates a UUID filename.
-            However, you may also specify the filename per request,
-            thanks to the Gotenberg-Output-Filename header.
-            Caution! The API adds the file extension automatically; you don't have to set it.
-          schema:
-            type: string
-          required: false
-        - in: header
-          name: Gotenberg-Trace
-          description: >-
-            The trace, or request ID, identifies a request in the logs.
-
-            By default, the API generates a UUID trace for each request.
-            However, you may also specify the trace per request, thanks to the Gotenberg-Trace header.
-          schema:
-            type: string
-          required: false
-      requestBody:
-        content:
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/MarkdownConvertRequestBody'
-        description: >-
-          The request body must have an `index.html` file in the `files` array,
-          as well as all the referred markdown resources on the same level as
-          the `index.html` file.
-      responses:
-        '200':
-          $ref: '#/components/responses/SuccessfulPDF'
-        '400':
-          description: Bad Request
-
-  /forms/libreoffice/convert:
-    post:
-      tags:
-        - libreoffice
-      summary: Convert an Office document to PDF
-      externalDocs:
-        url: https://gotenberg.dev/docs/modules/libreoffice
-      description: >-
-        This route accepts multipart/form-data requests and files with the following extensions:
-
-        .bib  .doc  .xml  .docx  .fodt  .html  .ltx  .txt  .odt  .ott  .pdb  .pdf  .psw  .rtf
-        .sdw  .stw  .sxw  .uot  .vor  .wps  .epub  .png  .bmp  .emf  .eps  .fodg  .gif  .jpg
-        .met  .odd  .otg  .pbm  .pct  .pgm  .ppm  .ras  .std  .svg  .svm  .swf  .sxd  .sxw
-        .tiff  .xhtml  .xpm  .fodp  .potm  .pot  .pptx  .pps  .ppt  .pwp  .sda  .sdd  .sti
-        .sxi  .uop  .wmf  .csv  .dbf  .dif  .fods  .ods  .ots  .pxl  .sdc  .slk  .stc  .sxc
-        .uos  .xls  .xlt  .xlsx  .tif  .jpeg  .odp
-
-        By default, if you send more than one file to convert, the route returns a ZIP archive of the
-        resulting PDF files. However, you may prefer to merge all the PDF files into an individual PDF file.
-
-        > **Attention:** The files will be merged alphabetically for the
-        resulting PDF.
-
-        You may also specify the page ranges to convert from the incoming Office
-        documents. The expected format is the same as the one from the print
-        options of LibreOffice, e.g. `1-1` or `1-4`.
-
-        > **Attention:** if more than one document, the page ranges will be
-        applied for each document.
-
-        See externalDocs for more details.
-      parameters:
-        - in: header
-          name: Gotenberg-Output-Filename
-          description: >-
-            By default, the API generates a UUID filename.
-            However, you may also specify the filename per request,
-            thanks to the Gotenberg-Output-Filename header.
-            Caution! The API adds the file extension automatically; you don't have to set it.
-          schema:
-            type: string
-          required: false
-        - in: header
-          name: Gotenberg-Trace
-          description: >-
-            The trace, or request ID, identifies a request in the logs.
-
-            By default, the API generates a UUID trace for each request.
-            However, you may also specify the trace per request, thanks to the Gotenberg-Trace header.
-          schema:
-            type: string
-          required: false
-      requestBody:
-        content:
-          multipart/form-data:
-            schema:
-              $ref: '#/components/schemas/OfficeConvertRequestBody'
-      responses:
-        '200':
-          $ref: '#/components/responses/SuccessfulPDF'
-        '400':
-          description: Bad Request, e.g. Both 'pdfFormat' and 'nativePdfA1aFormat' form values are provided
-
-  /forms/pdfengines/merge:
-    post:
-      tags:
-        - pdfengines
-      summary: Merge multiple PDFs into a single PDF
-      externalDocs:
-        url: https://gotenberg.dev/docs/modules/pdf-engines
-      description: >-
-        You can send multiple PDF files to this endpoint, the API will merge
-        them into a single PDF and return the resulting PDF file.
-
-        > **Attention:** The PDF files will be merged alphabetically.
-      parameters:
-        - in: header
-          name: Gotenberg-Output-Filename
-          description: >-
-            By default, the API generates a UUID filename.
-            However, you may also specify the filename per request,
-            thanks to the Gotenberg-Output-Filename header.
-            Caution! The API adds the file extension automatically; you don't have to set it.
-          schema:
-            type: string
-          required: false
-        - in: header
-          name: Gotenberg-Trace
-          description: >-
-            The trace, or request ID, identifies a request in the logs.
-
-            By default, the API generates a UUID trace for each request.
-            However, you may also specify the trace per request, thanks to the Gotenberg-Trace header.
-          schema:
-            type: string
-          required: false
-      requestBody:
-        content:
-          multipart/form-data:
-            schema:
-              type: object
-              properties:
-                files:
-                  type: array
-                  items:
-                    type: string
-                    format: binary
-                pdfFormat:
-                  type: string
-                  description: The PDF format of the resulting PDF
-                  example: PDF/A-1a
-              required:
-                - files
-      responses:
-        '200':
-          $ref: '#/components/responses/SuccessfulPDF'
-        '400':
-          description: Bad Request
-
-  /forms/pdfengines/convert:
-    post:
-      tags:
-        - pdfengines
-      summary: Convert PDFs into the given formats
-      externalDocs:
-        url: https://gotenberg.dev/docs/modules/pdf-engines
-      description: >-
-        This route accepts PDF files and a form field pdfFormat for converting them into the specified format.
-      parameters:
-        - in: header
-          name: Gotenberg-Output-Filename
-          description: >-
-            By default, the API generates a UUID filename.
-            However, you may also specify the filename per request,
-            thanks to the Gotenberg-Output-Filename header.
-            Caution! The API adds the file extension automatically; you don't have to set it.
-          schema:
-            type: string
-          required: false
-        - in: header
-          name: Gotenberg-Trace
-          description: >-
-            The trace, or request ID, identifies a request in the logs.
-
-            By default, the API generates a UUID trace for each request.
-            However, you may also specify the trace per request, thanks to the Gotenberg-Trace header.
-          schema:
-            type: string
-          required: false
-      requestBody:
-        content:
-          multipart/form-data:
-            schema:
-              type: object
-              properties:
-                files:
-                  type: array
-                  items:
-                    type: string
-                    format: binary
-                pdfFormat:
-                  type: string
-                  description: The PDF format of the resulting PDF
-                  example: PDF/A-1a
-              required:
-                - files
-                - pdfFormat
-      responses:
-        '200':
-          $ref: '#/components/responses/SuccessfulPDF'
-        '400':
-          description: >-
-            Bad Request, e.g. Invalid form data: no form file found for extensions: [.pdf]; form value 'pdfFormat' is required
-
-components:
-  schemas:
-    HTMLConvertRequestBody:
-      title: HTML Conversion Request Body
-      type: object
-      properties:
-        files:
-          type: array
-          description: >-
-            List of HTML files to be converted to PDF. An `index.html` file is
-            required, and any other resources that are referenced through the
-            HTML file must be included as well. All the referenced files must be
-            on the same level as the `index.html` file.
-          items:
-            type: string
-            format: binary
-        marginTop:
-          type: number
-          example: 0
-          default: 1
-          description: Top margin for the page in inches.
-        marginBottom:
-          type: number
-          example: 0
-          default: 1
-          description: Bottom margin for the page in inches.
-        marginLeft:
-          type: number
-          example: 0
-          default: 1
-          description: Left margin for the page in inches.
-        marginRight:
-          type: number
-          example: 0
-          default: 1
-          description: Right margin for the page in inches.
-        paperWidth:
-          type: number
-          example: 8.27
-          description: >-
-            Paper width to be used while rendering the PDF. The default page
-            size is A4.
-        paperHeight:
-          type: number
-          example: 11.69
-          description: >-
-            Paper height to be used while rendering the PDF. The default page
-            size is A4.
-        preferCssPageSize:
-          type: boolean
-          description: >-
-            Define whether to prefer page size as defined by CSS (default false)
-          default: false
-        printBackground:
-          type: boolean
-          description: >-
-            Print the background graphics (default false)
-          default: false
-        landscape:
-          type: boolean
-          example: true
-          default: false
-          description: >-
-            The default orientation for rendering the page is "portrait" mode.
-            By sending "landscape" parameter, you can ask the output to be
-            landscape.
-        scale:
-          type: number
-          minimum: 0.1
-          maximum: 2.0
-          example: 1.5
-          description: >-
-            The scale of the page rendering
-          default: 1.0
-        waitDelay:
-          type: string
-          example: 5s
-          description: >-
-            When the page relies on JavaScript for rendering, and you don't have access to the page's code,
-            you may want to wait a certain amount of time to make sure Chromium has fully rendered the page
-            you're trying to generate.
-        waitWindowStatus:
-          type: string
-          example: done
-          description: >-
-            If you have access to the page's code, you may set the window status and tell Gotenberg to wait for a specific value.
-            For instance
-               await promises()
-               window.status = 'ready'
-            Prefer this option over waitDelay.
-        extraHttpHeaders:
-          type: string
-          description: HTTP headers to send by Chromium while loading the HTML document (JSON format)
-        nativePageRanges:
-          type: string
-          example: 1-4
-          description: >-
-            The page ranges to be converted to PDF for the incoming Office
-            documents.
-        pdfFormat:
-          type: string
-          description: >-
-            The PDF format of the resulting PDF.
-            Caution! You cannot use both nativePdfA1aFormat and pdfFormat form fields.
-          example: PDF/A-1a
-      required:
-        - files
-    MarkdownConvertRequestBody:
-      title: Markdown Conversion Request Body
-      type: object
-      properties:
-        files:
-          type: array
-          items:
-            type: string
-            format: binary
-        marginTop:
-          type: number
-          example: 0
-          default: 1
-          description: Top margin for the page in inches.
-        marginBottom:
-          type: number
-          example: 0
-          default: 1
-          description: Bottom margin for the page in inches.
-        marginLeft:
-          type: number
-          example: 0
-          default: 1
-          description: Left margin for the page in inches.
-        marginRight:
-          type: number
-          example: 0
-          default: 1
-          description: Right margin for the page in inches.
-        paperWidth:
-          type: number
-          example: 8.27
-          description: >-
-            Paper width to be used while rendering the PDF. The default page
-            size is A4.
-        paperHeight:
-          type: number
-          example: 11.69
-          description: >-
-            Paper height to be used while rendering the PDF. The default page
-            size is A4.
-        preferCssPageSize:
-          type: boolean
-          description: >-
-            Define whether to prefer page size as defined by CSS (default false)
-          default: false
-        printBackground:
-          type: boolean
-          description: >-
-            Print the background graphics (default false)
-          default: false
-        landscape:
-          type: boolean
-          example: true
-          default: false
-          description: >-
-            The default orientation for rendering the page is "portrait" mode.
-            By sending "landscape" parameter, you can ask the output to be
-            landscape.
-        scale:
-          type: number
-          minimum: 0.1
-          maximum: 2.0
-          example: 1.5
-          description: >-
-            The scale of the page rendering
-          default: 1.0
-        waitDelay:
-          type: string
-          example: 5s
-          description: >-
-            When the page relies on JavaScript for rendering, and you don't have access to the page's code,
-            you may want to wait a certain amount of time to make sure Chromium has fully rendered the page
-            you're trying to generate.
-        waitWindowStatus:
-          type: string
-          example: done
-          description: >-
-            If you have access to the page's code, you may set the window status and tell Gotenberg to wait for a specific value.
-            For instance
-               await promises()
-               window.status = 'ready'
-            Prefer this option over waitDelay.
-        extraHttpHeaders:
-          type: string
-          description: HTTP headers to send by Chromium while loading the HTML document (JSON format)
-        nativePageRanges:
-          type: string
-          example: 1-4
-          description: >-
-            The page ranges to be converted to PDF for the incoming Office
-            documents.
-        pdfFormat:
-          type: string
-          description: >-
-            The PDF format of the resulting PDF.
-            Caution! You cannot use both nativePdfA1aFormat and pdfFormat form fields.
-          example: PDF/A-1a
-      required:
-        - files
-    URLConvertRequestBody:
-      title: URL Conversion Request Body
-      type: object
-      properties:
-        url:
-          type: string
-          example: 'https://google.com'
-        files:
-          description: Optional files named header.html and footer.html
-          type: array
-          items:
-            type: string
-            format: binary
-        marginTop:
-          type: number
-          example: 0
-          default: 1
-          description: Top margin for the page in inches.
-        marginBottom:
-          type: number
-          example: 0
-          default: 1
-          description: Bottom margin for the page in inches.
-        marginLeft:
-          type: number
-          example: 0
-          default: 1
-          description: Left margin for the page in inches.
-        marginRight:
-          type: number
-          example: 0
-          default: 1
-          description: Right margin for the page in inches.
-        paperWidth:
-          type: number
-          example: 8.27
-          description: >-
-            Paper width to be used while rendering the PDF. The default page
-            size is A4.
-        paperHeight:
-          type: number
-          example: 11.69
-          description: >-
-            Paper height to be used while rendering the PDF. The default page
-            size is A4.
-        preferCssPageSize:
-          type: boolean
-          description: >-
-            Define whether to prefer page size as defined by CSS (default false)
-          default: false
-        printBackground:
-          type: boolean
-          description: >-
-            Print the background graphics (default false)
-          default: false
-        landscape:
-          type: boolean
-          example: true
-          default: false
-          description: >-
-            The default orientation for rendering the page is "portrait" mode.
-            By sending "landscape" parameter, you can ask the output to be
-            landscape.
-        scale:
-          type: number
-          minimum: 0.1
-          maximum: 2.0
-          example: 1.5
-          description: >-
-            The scale of the page rendering
-          default: 1.0
-        waitDelay:
-          type: string
-          example: 5s
-          description: >-
-            When the page relies on JavaScript for rendering, and you don't have access to the page's code,
-            you may want to wait a certain amount of time to make sure Chromium has fully rendered the page
-            you're trying to generate.
-        waitWindowStatus:
-          type: string
-          example: done
-          description: >-
-            If you have access to the page's code, you may set the window status and tell Gotenberg to wait for a specific value.
-            For instance
-               await promises()
-               window.status = 'ready'
-            Prefer this option over waitDelay.
-        extraHttpHeaders:
-          type: string
-          description: HTTP headers to send by Chromium while loading the HTML document (JSON format)
-        nativePageRanges:
-          type: string
-          example: 1-4
-          description: >-
-            The page ranges to be converted to PDF for the incoming Office
-            documents.
-        pdfFormat:
-          type: string
-          description: >-
-            The PDF format of the resulting PDF.
-            Caution! You cannot use both nativePdfA1aFormat and pdfFormat form fields.
-          example: PDF/A-1a
-      required:
-        - url
-    OfficeConvertRequestBody:
-      title: Office Conversion Request Body
-      type: object
-      properties:
-        files:
-          type: array
-          items:
-            type: string
-            format: binary
-        nativePageRanges:
-          type: string
-          example: 1-4
-          description: >-
-            The page ranges to be converted to PDF for the incoming Office
-            documents. **If there are multiple files sent to the API, this page
-            range will apply to all of the documents**. Empty means all pages.
-        nativePdfA1aFormat:
-          type: boolean
-          description: >-
-            Use unoconv to convert the resulting PDF to the 'PDF/A-1a' format.
-            Caution! You cannot use both nativePdfA1aFormat and pdfFormat form fields.
-        pdfFormat:
-          type: string
-          description: >-
-            The PDF format of the resulting PDF.
-            Caution! You cannot use both nativePdfA1aFormat and pdfFormat form fields.
-          example: PDF/A-1a
-        landscape:
-          type: boolean
-          example: true
-          default: false
-          description: >-
-            The default orientation for rendering the page is "portrait" mode.
-            By sending "landscape" parameter, you can ask the output to be
-            landscape.
-        merge:
-          type: boolean
-          description: >-
-            Merge all PDF files into an individual PDF file.
-      required:
-        - files
-    MergeFilesRequestBody:
-      title: Merge Files Request Body
-      type: object
-      properties:
-        files:
-          type: array
-          items:
-            type: string
-            format: binary
-      required:
-        - files
-  securitySchemes: { }
-  responses:
-    SuccessfulPDF:
-      description: Resulting PDF file from the conversion.
-      content:
-        application/pdf:
-          schema:
-            type: string
-            format: binary

go.mod

@@ -1,66 +1,130 @@
-module github.com/gotenberg/gotenberg/v7
+module github.com/gotenberg/gotenberg/v8
 
-go 1.18
+go 1.24.0
 
 require (
-	github.com/alexliesenfeld/health v0.6.0
-	github.com/andybalholm/brotli v1.0.4 // indirect
-	github.com/chromedp/cdproto v0.0.0-20220530001853-c0f376d894d1
-	github.com/chromedp/chromedp v0.8.2
-	github.com/golang/snappy v0.0.4 // indirect
-	github.com/google/uuid v1.3.0
+	github.com/alexliesenfeld/health v0.8.0
+	github.com/andybalholm/brotli v1.1.2-0.20250424173009-453214e765f3 // indirect
+	github.com/barasher/go-exiftool v1.10.0
+	github.com/chromedp/cdproto v0.0.0-20250416210000-d7e4d624041a
+	github.com/chromedp/chromedp v0.13.6
+	github.com/google/uuid v1.6.0
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
-	github.com/hashicorp/go-retryablehttp v0.7.1
-	github.com/klauspost/compress v1.15.6 // indirect
-	github.com/klauspost/pgzip v1.2.5 // indirect
-	github.com/labstack/echo/v4 v4.7.2
-	github.com/labstack/gommon v0.3.1
-	github.com/mattn/go-isatty v0.0.14 // indirect
-	github.com/mholt/archiver/v3 v3.5.1
-	github.com/microcosm-cc/bluemonday v1.0.18
-	github.com/nwaples/rardecode v1.1.3 // indirect
-	github.com/pdfcpu/pdfcpu v0.3.13
-	github.com/pierrec/lz4/v4 v4.1.14 // indirect
-	github.com/prometheus/client_golang v1.12.2
+	github.com/hashicorp/go-retryablehttp v0.7.7
+	github.com/klauspost/compress v1.18.0 // indirect
+	github.com/klauspost/pgzip v1.2.6 // indirect
+	github.com/labstack/echo/v4 v4.13.3
+	github.com/labstack/gommon v0.4.2
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/microcosm-cc/bluemonday v1.0.27
+	github.com/pierrec/lz4/v4 v4.1.22 // indirect
+	github.com/prometheus/client_golang v1.22.0
 	github.com/russross/blackfriday/v2 v2.1.0
-	github.com/spf13/pflag v1.0.5
-	github.com/ulikunitz/xz v0.5.10 // indirect
-	go.uber.org/atomic v1.9.0 // indirect
-	go.uber.org/multierr v1.8.0
-	go.uber.org/zap v1.21.0
-	golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e // indirect
-	golang.org/x/image v0.0.0-20220601225756-64ec528b34cd // indirect
-	golang.org/x/net v0.0.0-20220607020251-c690dde0001d
-	golang.org/x/sync v0.0.0-20220601150217-0de741cfad7f
-	golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
-	golang.org/x/term v0.0.0-20220526004731-065cf7ba2467
-	golang.org/x/text v0.3.7
+	github.com/spf13/pflag v1.0.6
+	github.com/ulikunitz/xz v0.5.12 // indirect
+	go.uber.org/multierr v1.11.0
+	go.uber.org/zap v1.27.0
+	golang.org/x/crypto v0.38.0 // indirect
+	golang.org/x/net v0.40.0
+	golang.org/x/sync v0.14.0
+	golang.org/x/sys v0.33.0 // indirect
+	golang.org/x/term v0.32.0
+	golang.org/x/text v0.25.0
 )
 
 require (
+	github.com/cucumber/godog v0.15.0
+	github.com/dlclark/regexp2 v1.11.5
+	github.com/docker/docker v28.1.1+incompatible
+	github.com/docker/go-connections v0.5.0
+	github.com/mholt/archives v0.1.2
+	github.com/shirou/gopsutil/v4 v4.25.4
+	github.com/testcontainers/testcontainers-go v0.37.0
+)
+
+require (
+	dario.cat/mergo v1.0.1 // indirect
+	github.com/Azure/go-ansiterm v0.0.0-20250102033503-faa5f7b0171c // indirect
+	github.com/Microsoft/go-winio v0.6.2 // indirect
+	github.com/STARRY-S/zip v0.2.3 // indirect
 	github.com/aymerick/douceur v0.2.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cespare/xxhash/v2 v2.1.2 // indirect
-	github.com/chromedp/sysutil v1.0.0 // indirect
-	github.com/dsnet/compress v0.0.2-0.20210315054119-f66993602bf5 // indirect
+	github.com/bodgit/plumbing v1.3.0 // indirect
+	github.com/bodgit/sevenzip v1.6.0 // indirect
+	github.com/bodgit/windows v1.0.1 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/chromedp/sysutil v1.1.0 // indirect
+	github.com/containerd/log v0.1.0 // indirect
+	github.com/containerd/platforms v0.2.1 // indirect
+	github.com/cpuguy83/dockercfg v0.3.2 // indirect
+	github.com/cucumber/gherkin/go/v26 v26.2.0 // indirect
+	github.com/cucumber/messages/go/v21 v21.0.1 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/distribution/reference v0.6.0 // indirect
+	github.com/docker/go-units v0.5.0 // indirect
+	github.com/dsnet/compress v0.0.2-0.20230904184137-39efe44ab707 // indirect
+	github.com/ebitengine/purego v0.8.2 // indirect
+	github.com/felixge/httpsnoop v1.0.4 // indirect
+	github.com/go-json-experiment/json v0.0.0-20250223041408-d3c622f1b874 // indirect
+	github.com/go-logr/logr v1.4.2 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/go-ole/go-ole v1.3.0 // indirect
 	github.com/gobwas/httphead v0.1.0 // indirect
 	github.com/gobwas/pool v0.2.1 // indirect
-	github.com/gobwas/ws v1.1.0 // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/gorilla/css v1.0.0 // indirect
-	github.com/hhrutter/lzw v0.0.0-20190829144645-6f07a24e8650 // indirect
-	github.com/hhrutter/tiff v0.0.0-20190829141212-736cae8d0bc7 // indirect
-	github.com/josharian/intern v1.0.0 // indirect
-	github.com/mailru/easyjson v0.7.7 // indirect
-	github.com/mattn/go-colorable v0.1.12 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/gobwas/ws v1.4.0 // indirect
+	github.com/gofrs/uuid v4.4.0+incompatible // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/gorilla/css v1.0.1 // indirect
+	github.com/hashicorp/errwrap v1.1.0 // indirect
+	github.com/hashicorp/go-immutable-radix v1.3.1 // indirect
+	github.com/hashicorp/go-memdb v1.3.5 // indirect
+	github.com/hashicorp/go-multierror v1.1.1 // indirect
+	github.com/hashicorp/golang-lru v1.0.2 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
+	github.com/lufia/plan9stats v0.0.0-20250317134145-8bc96cf8fc35 // indirect
+	github.com/magiconair/properties v1.8.10 // indirect
+	github.com/mattn/go-colorable v0.1.14 // indirect
+	github.com/minio/minlz v1.0.0 // indirect
+	github.com/moby/docker-image-spec v1.3.1 // indirect
+	github.com/moby/go-archive v0.1.0 // indirect
+	github.com/moby/patternmatcher v0.6.0 // indirect
+	github.com/moby/sys/atomicwriter v0.1.0 // indirect
+	github.com/moby/sys/sequential v0.6.0 // indirect
+	github.com/moby/sys/user v0.4.0 // indirect
+	github.com/moby/sys/userns v0.1.0 // indirect
+	github.com/moby/term v0.5.2 // indirect
+	github.com/morikuni/aec v1.0.0 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/nwaples/rardecode/v2 v2.1.1 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/opencontainers/image-spec v1.1.1 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
-	github.com/prometheus/client_model v0.2.0 // indirect
-	github.com/prometheus/common v0.34.0 // indirect
-	github.com/prometheus/procfs v0.7.3 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/power-devops/perfstat v0.0.0-20240221224432-82ca36839d55 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
+	github.com/prometheus/common v0.63.0 // indirect
+	github.com/prometheus/procfs v0.16.0 // indirect
+	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/sorairolake/lzip-go v0.3.7 // indirect
+	github.com/stretchr/testify v1.10.0 // indirect
+	github.com/therootcompany/xz v1.0.1 // indirect
+	github.com/tklauser/go-sysconf v0.3.15 // indirect
+	github.com/tklauser/numcpus v0.10.0 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
-	github.com/valyala/fasttemplate v1.2.1 // indirect
-	github.com/xi2/xz v0.0.0-20171230120015-48954b6210f8 // indirect
-	google.golang.org/protobuf v1.28.0 // indirect
-	gopkg.in/yaml.v2 v2.4.0 // indirect
+	github.com/valyala/fasttemplate v1.2.2 // indirect
+	github.com/yusufpapurcu/wmi v1.2.4 // indirect
+	go.opentelemetry.io/auto/sdk v1.1.0 // indirect
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.60.0 // indirect
+	go.opentelemetry.io/otel v1.35.0 // indirect
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.19.0 // indirect
+	go.opentelemetry.io/otel/metric v1.35.0 // indirect
+	go.opentelemetry.io/otel/trace v1.35.0 // indirect
+	go.opentelemetry.io/proto/otlp v1.0.0 // indirect
+	go4.org v0.0.0-20230225012048-214862532bf5 // indirect
+	golang.org/x/time v0.11.0 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20231120223509-83a465c0220f // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240401170217-c3f982113cda // indirect
+	google.golang.org/protobuf v1.36.6 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -6,95 +6,122 @@ cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxK
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-cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
-cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
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@@ -320,14 +369,9 @@ golang.org/x/exp v0.0.0-20190829153037-c13cbed26979/go.mod h1:86+5VVa7VpoJ4kLfm0
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@@ -337,19 +381,16 @@ golang.org/x/lint v0.0.0-20190909230951-414d861bb4ac/go.mod h1:6SW0HCj/g11FgYtHl
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@@ -357,111 +398,76 @@ golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn
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@@ -481,32 +487,17 @@ golang.org/x/tools v0.0.0-20191113191852-77e3bb0ad9e7/go.mod h1:b+2E5dAYhXwXZwtn
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@@ -516,20 +507,11 @@ google.golang.org/api v0.13.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsb
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@@ -542,73 +524,38 @@ google.golang.org/genproto v0.0.0-20191108220845-16a3f7862a1a/go.mod h1:n3cpQtvx
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-gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
-gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gotest.tools/v3 v3.5.2 h1:7koQfIKdy+I8UTetycgUqXWSDwpgv193Ka+qRsmBY8Q=
+gotest.tools/v3 v3.5.2/go.mod h1:LtdLGcnqToBH83WByAAi/wiwSFCArdFIUV/xxN4pcjA=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
-honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=

package-lock.json

@@ -0,0 +1,183 @@
+{
+  "name": "gotenberg",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "devDependencies": {
+        "prettier": "3.5.3",
+        "prettier-plugin-gherkin": "^3.1.2",
+        "prettier-plugin-sh": "^0.17.4"
+      }
+    },
+    "node_modules/@cucumber/gherkin": {
+      "version": "27.0.0",
+      "resolved": "https://registry.npmjs.org/@cucumber/gherkin/-/gherkin-27.0.0.tgz",
+      "integrity": "sha512-j5rCsjqzRiC3iVTier3sa0kzyNbkcAmF7xr7jKnyO7qDeK3Z8Ye1P3KSVpeQRMY+KCDJ3WbTDdyxH0FwfA/fIw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@cucumber/messages": ">=19.1.4 <=22"
+      }
+    },
+    "node_modules/@cucumber/gherkin/node_modules/@cucumber/messages": {
+      "version": "22.0.0",
+      "resolved": "https://registry.npmjs.org/@cucumber/messages/-/messages-22.0.0.tgz",
+      "integrity": "sha512-EuaUtYte9ilkxcKmfqGF9pJsHRUU0jwie5ukuZ/1NPTuHS1LxHPsGEODK17RPRbZHOFhqybNzG2rHAwThxEymg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/uuid": "9.0.1",
+        "class-transformer": "0.5.1",
+        "reflect-metadata": "0.1.13",
+        "uuid": "9.0.0"
+      }
+    },
+    "node_modules/@cucumber/gherkin/node_modules/@types/uuid": {
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/@types/uuid/-/uuid-9.0.1.tgz",
+      "integrity": "sha512-rFT3ak0/2trgvp4yYZo5iKFEPsET7vKydKF+VRCxlQ9bpheehyAJH89dAkaLEq/j/RZXJIqcgsmPJKUP1Z28HA==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@cucumber/gherkin/node_modules/uuid": {
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-9.0.0.tgz",
+      "integrity": "sha512-MXcSTerfPa4uqyzStbRoTgt5XIe3x5+42+q1sDuy3R5MDk66URdLMOZe5aPX/SQd+kuYAh0FdP/pO28IkQyTeg==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
+    "node_modules/@cucumber/messages": {
+      "version": "23.0.0",
+      "resolved": "https://registry.npmjs.org/@cucumber/messages/-/messages-23.0.0.tgz",
+      "integrity": "sha512-2ZWKNnikNMBnle3P3cgy+fgzhABrY4oBbiWp9wcI8ANdT4LlYRN6jQ6j/9CQGTDGRfkyRtr/5VkYq7q24XCsuA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/uuid": "9.0.6",
+        "class-transformer": "0.5.1",
+        "reflect-metadata": "0.1.13",
+        "uuid": "9.0.1"
+      }
+    },
+    "node_modules/@reteps/dockerfmt": {
+      "version": "0.3.6",
+      "resolved": "https://registry.npmjs.org/@reteps/dockerfmt/-/dockerfmt-0.3.6.tgz",
+      "integrity": "sha512-Tb5wIMvBf/nLejTQ61krK644/CEMB/cpiaIFXqGApfGqO3GwcR3qnI0DbmkFVCl2OyEp8LnLX3EkucoL0+tbFg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^v12.20.0 || ^14.13.0 || >=16.0.0"
+      }
+    },
+    "node_modules/@types/uuid": {
+      "version": "9.0.6",
+      "resolved": "https://registry.npmjs.org/@types/uuid/-/uuid-9.0.6.tgz",
+      "integrity": "sha512-BT2Krtx4xaO6iwzwMFUYvWBWkV2pr37zD68Vmp1CDV196MzczBRxuEpD6Pr395HAgebC/co7hOphs53r8V7jew==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/class-transformer": {
+      "version": "0.5.1",
+      "resolved": "https://registry.npmjs.org/class-transformer/-/class-transformer-0.5.1.tgz",
+      "integrity": "sha512-SQa1Ws6hUbfC98vKGxZH3KFY0Y1lm5Zm0SY8XX9zbK7FJCyVEac3ATW0RIpwzW+oOfmHE5PMPufDG9hCfoEOMw==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/prettier": {
+      "version": "3.5.3",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.5.3.tgz",
+      "integrity": "sha512-QQtaxnoDJeAkDvDKWCLiwIXkTgRhwYDEQCghU9Z6q03iyek/rxRh/2lC3HB7P8sWT2xC/y5JDctPLBIGzHKbhw==",
+      "dev": true,
+      "license": "MIT",
+      "bin": {
+        "prettier": "bin/prettier.cjs"
+      },
+      "engines": {
+        "node": ">=14"
+      },
+      "funding": {
+        "url": "https://github.com/prettier/prettier?sponsor=1"
+      }
+    },
+    "node_modules/prettier-plugin-gherkin": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/prettier-plugin-gherkin/-/prettier-plugin-gherkin-3.1.2.tgz",
+      "integrity": "sha512-LgehRNKCAqZsoE/yblmqXYfMpEK2mhVWQKNj/TFzeLR+0rhFGHqq3RlYcYhPgzbr0n6w2Bv+0Gm1yxNdzkdacw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@cucumber/gherkin": "^27.0.0",
+        "@cucumber/messages": "^23.0.0",
+        "prettier": "^3.0.0"
+      }
+    },
+    "node_modules/prettier-plugin-sh": {
+      "version": "0.17.4",
+      "resolved": "https://registry.npmjs.org/prettier-plugin-sh/-/prettier-plugin-sh-0.17.4.tgz",
+      "integrity": "sha512-aAVKXZ7GTEMZdZsIPSwMwddwPvt2ibMbRGd4OJAP0G7QoeYZV+mPNg2Oln3R53sZ4PVjeAA7Xzi/PuI0QlHHfQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@reteps/dockerfmt": "^0.3.5",
+        "sh-syntax": "^0.5.6"
+      },
+      "engines": {
+        "node": ">=16.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/unts"
+      },
+      "peerDependencies": {
+        "prettier": "^3.0.3"
+      }
+    },
+    "node_modules/reflect-metadata": {
+      "version": "0.1.13",
+      "resolved": "https://registry.npmjs.org/reflect-metadata/-/reflect-metadata-0.1.13.tgz",
+      "integrity": "sha512-Ts1Y/anZELhSsjMcU605fU9RE4Oi3p5ORujwbIKXfWa+0Zxs510Qrmrce5/Jowq3cHSZSJqBjypxmHarc+vEWg==",
+      "dev": true,
+      "license": "Apache-2.0"
+    },
+    "node_modules/sh-syntax": {
+      "version": "0.5.7",
+      "resolved": "https://registry.npmjs.org/sh-syntax/-/sh-syntax-0.5.7.tgz",
+      "integrity": "sha512-74m9dt91konrF5+m0kASugzi37VxKsnTJQ6yvdDZu3IijG5/vIZpImP6FadsJLWNt2X2YD0VaTwW5W7Ox7mFVg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "tslib": "^2.8.1"
+      },
+      "engines": {
+        "node": ">=16.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/sh-syntax"
+      }
+    },
+    "node_modules/tslib": {
+      "version": "2.8.1",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
+      "integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==",
+      "dev": true,
+      "license": "0BSD"
+    },
+    "node_modules/uuid": {
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-9.0.1.tgz",
+      "integrity": "sha512-b+1eJOlsR9K8HJpow9Ok3fiWOWSIcIzXodvv0rQjVoOVNpWMpxf1wZNpt4y9h10odCNrqnYp1OBzRktckBe3sA==",
+      "dev": true,
+      "funding": [
+        "https://github.com/sponsors/broofa",
+        "https://github.com/sponsors/ctavan"
+      ],
+      "license": "MIT",
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    }
+  }
+}

package.json

@@ -0,0 +1,7 @@
+{
+  "devDependencies": {
+    "prettier": "3.5.3",
+    "prettier-plugin-gherkin": "^3.1.2",
+    "prettier-plugin-sh": "^0.17.4"
+  }
+}

pkg/gotenberg/cmd.go

@@ -13,43 +13,43 @@ import (
 	"go.uber.org/zap"
 )
 
-// Cmd wraps an exec.Cmd.
+// Cmd wraps an [exec.Cmd].
 type Cmd struct {
 	ctx     context.Context
 	logger  *zap.Logger
 	process *exec.Cmd
 }
 
-// Command creates a Cmd without a context. It configures the internal
-// exec.Cmd of Cmd so that we may kill its unix process and all its children
-// without creating orphans.
+// Command creates a [Cmd] without a context. It configures the internal
+// [exec.Cmd] of [Cmd] so that we may kill its unix process and all its
+// children without creating orphans.
 //
 // See https://medium.com/@felixge/killing-a-child-process-and-all-of-its-children-in-go-54079af94773.
-func Command(logger *zap.Logger, binPath string, args ...string) Cmd {
+func Command(logger *zap.Logger, binPath string, args ...string) *Cmd {
 	cmd := exec.Command(binPath, args...)
 	cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
 
-	return Cmd{
+	return &Cmd{
 		ctx:     nil,
 		logger:  logger.Named(strings.ReplaceAll(binPath, "/", "")),
 		process: cmd,
 	}
 }
 
-// CommandContext creates a Cmd with a context. It configures the internal
-// exec.Cmd of Cmd so that we may kill its unix process and all its children
-// without creating orphans.
+// CommandContext creates a [Cmd] with a context. It configures the internal
+// [exec.Cmd] of [Cmd] so that we may kill its unix process and all its
+// children without creating orphans.
 //
 // See https://medium.com/@felixge/killing-a-child-process-and-all-of-its-children-in-go-54079af94773.
-func CommandContext(ctx context.Context, logger *zap.Logger, binPath string, args ...string) (Cmd, error) {
+func CommandContext(ctx context.Context, logger *zap.Logger, binPath string, args ...string) (*Cmd, error) {
 	if ctx == nil {
-		return Cmd{}, errors.New("nil context")
+		return nil, errors.New("nil context")
 	}
 
 	cmd := exec.CommandContext(ctx, binPath, args...)
 	cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
 
-	return Cmd{
+	return &Cmd{
 		ctx:     ctx,
 		logger:  logger.Named(strings.ReplaceAll(binPath, "/", "")),
 		process: cmd,
@@ -57,7 +57,7 @@ func CommandContext(ctx context.Context, logger *zap.Logger, binPath string, arg
 }
 
 // Start starts the command but does not wait for its completion.
-func (cmd Cmd) Start() error {
+func (cmd *Cmd) Start() error {
 	err := cmd.pipeOutput()
 	if err != nil {
 		return fmt.Errorf("pipe unix process output: %w", err)
@@ -74,8 +74,8 @@ func (cmd Cmd) Start() error {
 }
 
 // Wait waits for the command to complete. It should be called when using the
-// Start method, so that the command does not leak zombies.
-func (cmd Cmd) Wait() error {
+// Start method so that the command does not leak zombies.
+func (cmd *Cmd) Wait() error {
 	err := cmd.process.Wait()
 	if err != nil {
 		return fmt.Errorf("wait for unix process: %w", err)
@@ -84,9 +84,9 @@ func (cmd Cmd) Wait() error {
 	return nil
 }
 
-// Exec executes the command and wait for its completion or until the context
+// Exec executes the command and waits for its completion or until the context
 // is done. In any case, it kills the unix process and all its children.
-func (cmd Cmd) Exec() (int, error) {
+func (cmd *Cmd) Exec() (int, error) {
 	if cmd.ctx == nil {
 		return 10, errors.New("nil context")
 	}
@@ -134,7 +134,7 @@ func (cmd Cmd) Exec() (int, error) {
 
 // pipeOutput creates logs entries according to the process stdout and stderr.
 // It does nothing if the logging level is not debug.
-func (cmd Cmd) pipeOutput() error {
+func (cmd *Cmd) pipeOutput() error {
 	checkedEntry := cmd.logger.Check(zap.DebugLevel, "check for debug level before piping unix process output")
 	if checkedEntry == nil {
 		return nil
@@ -154,11 +154,15 @@ func (cmd Cmd) pipeOutput() error {
 	// (either stdout or stderr).
 	logCommandOutput := func(logger *zap.Logger, reader io.ReadCloser) {
 		r := bufio.NewReader(reader)
-		defer reader.Close()
+		defer func(reader io.ReadCloser) {
+			err := reader.Close()
+			if err != nil && !strings.Contains(err.Error(), "file already closed") {
+				logger.Error(fmt.Sprintf("close reader: %s", err))
+			}
+		}(reader)
 
 		for {
 			line, _, err := r.ReadLine()
-
 			if err != nil {
 				if err != io.EOF && !strings.Contains(err.Error(), "file already closed") {
 					logger.Error(fmt.Sprintf("pipe unix process output error: %s", err))
@@ -182,7 +186,7 @@ func (cmd Cmd) pipeOutput() error {
 // Kill kills the unix process and all its children without creating orphans.
 //
 // See https://medium.com/@felixge/killing-a-child-process-and-all-of-its-children-in-go-54079af94773.
-func (cmd Cmd) Kill() error {
+func (cmd *Cmd) Kill() error {
 	if cmd.process == nil {
 		// We cannot use the logger here, because for whatever reason using it
 		// result to a panic.

pkg/gotenberg/cmd_test.go

@@ -1,324 +0,0 @@
-package gotenberg
-
-import (
-	"context"
-	"testing"
-	"time"
-
-	"go.uber.org/zap"
-)
-
-func TestCommand(t *testing.T) {
-	cmd := Command(zap.NewNop(), "foo")
-
-	if !cmd.process.SysProcAttr.Setpgid {
-		t.Error("expected cmd.process.SysProcAttr.Setpgid to be true")
-	}
-}
-
-func TestCommandContext(t *testing.T) {
-	tests := []struct {
-		name                    string
-		ctx                     context.Context
-		expectCommandContextErr bool
-	}{
-		{
-			name: "nominal behavior",
-			ctx:  context.Background(),
-		},
-		{
-			name:                    "nil context",
-			expectCommandContextErr: true,
-		},
-	}
-
-	for _, tc := range tests {
-		t.Run(tc.name, func(t *testing.T) {
-			cmd, err := CommandContext(tc.ctx, zap.NewNop(), "foo")
-
-			if err == nil && !cmd.process.SysProcAttr.Setpgid {
-				t.Fatal("expected cmd.process.SysProcAttr.Setpgid to be true")
-			}
-
-			if tc.expectCommandContextErr && err == nil {
-				t.Error("expected error from CommandContext(), but got none")
-			}
-
-			if !tc.expectCommandContextErr && err != nil {
-				t.Errorf("expected no error from CommandContext(), but got: %v", err)
-			}
-		})
-	}
-}
-
-func TestCmd_Start(t *testing.T) {
-	tests := []struct {
-		name           string
-		cmd            Cmd
-		expectStartErr bool
-	}{
-		{
-			name: "nominal behavior",
-			cmd:  Command(zap.NewNop(), "echo", "Hello", "World"),
-		},
-		{
-			name:           "start error",
-			cmd:            Command(zap.NewNop(), "foo"),
-			expectStartErr: true,
-		},
-	}
-
-	for _, tc := range tests {
-		t.Run(tc.name, func(t *testing.T) {
-			err := tc.cmd.Start()
-
-			if tc.expectStartErr && err == nil {
-				t.Error("expected error from cmd.Start(), but got none")
-			}
-
-			if !tc.expectStartErr && err != nil {
-				t.Errorf("expected no error from cmd.Start(), but got: %v", err)
-			}
-		})
-	}
-}
-
-func TestCmd_Wait(t *testing.T) {
-	tests := []struct {
-		name          string
-		cmd           Cmd
-		expectWaitErr bool
-	}{
-		{
-			name: "nominal behavior",
-			cmd: func() Cmd {
-				cmd := Command(zap.NewNop(), "echo", "Hello", "World")
-
-				err := cmd.Start()
-				if err != nil {
-					t.Fatalf("expected no error from cmd.Start(), but got: %v", err)
-				}
-
-				return cmd
-			}(),
-		},
-		{
-			name: "wait error",
-			cmd: func() Cmd {
-				cmd := Command(zap.NewNop(), "echo", "Hello", "World")
-
-				err := cmd.Start()
-				if err != nil {
-					t.Fatalf("expected no error from cmd.Start(), but got: %v", err)
-				}
-
-				err = cmd.Kill()
-				if err != nil {
-					t.Fatalf("expected no error from cmd.Kill(), but got: %v", err)
-				}
-
-				return cmd
-			}(),
-			expectWaitErr: true,
-		},
-	}
-
-	for _, tc := range tests {
-		t.Run(tc.name, func(t *testing.T) {
-			err := tc.cmd.Wait()
-
-			if tc.expectWaitErr && err == nil {
-				t.Error("expected error from cmd.Wait(), but got none")
-			}
-
-			if !tc.expectWaitErr && err != nil {
-				t.Errorf("expected no error from cmd.Wait(), but got: %v", err)
-			}
-		})
-	}
-}
-
-func TestCmd_Exec(t *testing.T) {
-	tests := []struct {
-		name          string
-		cmd           Cmd
-		timeout       time.Duration
-		expectExecErr bool
-	}{
-		{
-			name: "nominal behavior",
-			cmd: func() Cmd {
-				cmd, err := CommandContext(context.Background(), zap.NewNop(), "echo", "Hello", "World")
-				if err != nil {
-					t.Fatalf("expected no error from CommandContext(), but got: %v", err)
-				}
-
-				return cmd
-			}(),
-		},
-		{
-			name:          "nil context",
-			cmd:           Command(zap.NewNop(), "echo", "Hello", "World"),
-			expectExecErr: true,
-		},
-		{
-			name: "start error",
-			cmd: func() Cmd {
-				cmd, err := CommandContext(context.Background(), zap.NewNop(), "foo")
-				if err != nil {
-					t.Fatalf("expected no error from CommandContext(), but got: %v", err)
-				}
-
-				return cmd
-			}(),
-			expectExecErr: true,
-		},
-		{
-			name:          "context done",
-			cmd:           Command(zap.NewNop(), "sleep", "2"),
-			timeout:       time.Duration(1) * time.Second,
-			expectExecErr: true,
-		},
-	}
-
-	for _, tc := range tests {
-		t.Run(tc.name, func(t *testing.T) {
-			if tc.timeout > 0 {
-				ctx, cancel := context.WithTimeout(context.TODO(), tc.timeout)
-				defer cancel()
-
-				tc.cmd.ctx = ctx
-			}
-
-			_, err := tc.cmd.Exec()
-
-			if tc.expectExecErr && err == nil {
-				t.Error("expected error from cmd.Exec(), but got none")
-			}
-
-			if !tc.expectExecErr && err != nil {
-				t.Errorf("expected no error from cmd.Exec(), but got: %v", err)
-			}
-		})
-	}
-}
-
-func TestCmd_pipeOutput(t *testing.T) {
-	tests := []struct {
-		name                string
-		cmd                 Cmd
-		run                 bool
-		expectPipeOutputErr bool
-	}{
-		{
-			name: "nominal behavior",
-			cmd:  Command(zap.NewExample(), "echo", "Hello", "World"),
-			run:  true,
-		},
-		{
-			name: "no debug, no pipe",
-			cmd:  Command(zap.NewNop(), "echo", "Hello", "World"),
-		},
-		{
-			name: "stdout already piped",
-			cmd: func() Cmd {
-				cmd := Command(zap.NewExample(), "echo", "Hello", "World")
-
-				_, err := cmd.process.StdoutPipe()
-				if err != nil {
-					t.Fatalf("expected no error from cmd.process.StdoutPipe(), but got: %v", err)
-				}
-
-				return cmd
-			}(),
-			expectPipeOutputErr: true,
-		},
-		{
-			name: "stderr already piped",
-			cmd: func() Cmd {
-				cmd := Command(zap.NewExample(), "echo", "Hello", "World")
-
-				_, err := cmd.process.StderrPipe()
-				if err != nil {
-					t.Fatalf("expected no error from cmd.process.StderrPipe(), but got: %v", err)
-				}
-
-				return cmd
-			}(),
-			expectPipeOutputErr: true,
-		},
-	}
-
-	for _, tc := range tests {
-		t.Run(tc.name, func(t *testing.T) {
-			err := tc.cmd.pipeOutput()
-
-			if tc.run {
-				errStart := tc.cmd.process.Start()
-				if errStart != nil {
-					t.Fatalf("expected no error from tc.cmd.process.Start(), but got: %v", errStart)
-				}
-			}
-
-			if tc.expectPipeOutputErr && err == nil {
-				t.Error("expected error from cmd.pipeOutput(), but got none")
-			}
-
-			if !tc.expectPipeOutputErr && err != nil {
-				t.Errorf("expected no error from cmd.pipeOutput(), but got: %v", err)
-			}
-		})
-	}
-}
-
-func TestCmd_Kill(t *testing.T) {
-	tests := []struct {
-		name string
-		cmd  Cmd
-	}{
-		{
-			name: "nominal behavior",
-			cmd: func() Cmd {
-				cmd := Command(zap.NewNop(), "sleep", "60")
-
-				err := cmd.process.Start()
-				if err != nil {
-					t.Fatalf("expected no error from cmd.process.Start(), but got: %v", err)
-				}
-
-				return cmd
-			}(),
-		},
-		{
-			name: "no process",
-			cmd:  Cmd{logger: zap.NewNop()},
-		},
-		{
-			name: "process already killed",
-			cmd: func() Cmd {
-				cmd := Command(zap.NewNop(), "sleep", "60")
-
-				err := cmd.process.Start()
-				if err != nil {
-					t.Fatalf("expected no error from cmd.process.Start(), but got: %v", err)
-				}
-
-				err = cmd.Kill()
-				if err != nil {
-					t.Fatalf("expected no error from cmd.Kill(), but got: %v", err)
-				}
-
-				return cmd
-			}(),
-		},
-	}
-
-	for _, tc := range tests {
-		t.Run(tc.name, func(t *testing.T) {
-			err := tc.cmd.Kill()
-			if err != nil {
-				t.Errorf("expected no error from cmd.Kill(), but got: %v", err)
-			}
-		})
-	}
-}

pkg/gotenberg/context.go

@@ -5,7 +5,7 @@ import (
 	"reflect"
 )
 
-// Context is a struct which helps initializing modules. When provisioning, a
+// Context is a struct that helps to initialize modules. When provisioning, a
 // module may use the context to get other modules that it needs internally.
 type Context struct {
 	flags           ParsedFlags
@@ -13,8 +13,8 @@ type Context struct {
 	moduleInstances map[string]interface{}
 }
 
-// NewContext creates a Context.
-// In a module, prefer the Provisioner interface to get a Context.
+// NewContext creates a [Context].
+// In a module, prefer the [Provisioner] interface to get a [Context].
 func NewContext(
 	flags ParsedFlags,
 	descriptors []ModuleDescriptor,
@@ -32,7 +32,7 @@ func NewContext(
 //		flags := ctx.ParsedFlags()
 //		m.foo = flags.RequiredString("foo")
 //	}
-func (ctx Context) ParsedFlags() ParsedFlags {
+func (ctx *Context) ParsedFlags() ParsedFlags {
 	return ctx.flags
 }
 
@@ -47,7 +47,6 @@ func (ctx Context) ParsedFlags() ParsedFlags {
 // initializes it. Otherwise, returns the already initialized instance.
 func (ctx *Context) Module(kind interface{}) (interface{}, error) {
 	mods, err := ctx.Modules(kind)
-
 	if err != nil {
 		return nil, fmt.Errorf("get module: %w", err)
 	}
@@ -59,7 +58,7 @@ func (ctx *Context) Module(kind interface{}) (interface{}, error) {
 	return mods[0], nil
 }
 
-// Modules returns the list of modules which satisfies the requested interface.
+// Modules return the list of modules which satisfies the requested interface.
 //
 //	func (m *YourModule) Provision(ctx *gotenberg.Context) error {
 //		mods, _ := ctx.Modules(new(ModuleInterface))
@@ -101,7 +100,7 @@ func (ctx *Context) Modules(kind interface{}) ([]interface{}, error) {
 }
 
 // loadModule calls the Provision and/or Validate methods of the requested
-// module if it satisfies the Provisioner and/or Validator interfaces.
+// module if it satisfies the [Provisioner] and/or [Validator] interfaces.
 func (ctx *Context) loadModule(id string, instance interface{}) error {
 	if prov, ok := instance.(Provisioner); ok {
 		// The instance can be provisioned.

pkg/gotenberg/context_test.go

@@ -5,191 +5,213 @@ import (
 	"testing"
 )
 
-func TestNewContext(t *testing.T) {
-	if NewContext(ParsedFlags{}, nil) == nil {
-		t.Error("expected a non-nil value")
-	}
-}
-
-func TestContext_ParsedFlags(t *testing.T) {
-	ctx := NewContext(ParsedFlags{}, nil)
-
-	actual := ctx.ParsedFlags()
-	expect := ParsedFlags{}
-
-	if actual != expect {
-		t.Errorf("expected %v but got %v", expect, actual)
-	}
-}
-
 func TestContext_Module(t *testing.T) {
-	for i, tc := range []struct {
-		mods      []ModuleDescriptor
-		kind      interface{}
-		expectErr bool
+	for _, tc := range []struct {
+		scenario    string
+		mods        []ModuleDescriptor
+		kind        interface{}
+		expectError bool
 	}{
 		{
+			scenario: "module with error on provision",
 			mods: func() []ModuleDescriptor {
-				mod := struct{ ProtoProvisioner }{}
-				mod.descriptor = func() ModuleDescriptor {
+				mod := &struct {
+					ModuleMock
+					ProvisionerMock
+				}{}
+				mod.DescriptorMock = func() ModuleDescriptor {
 					return ModuleDescriptor{ID: "foo", New: func() Module { return mod }}
 				}
-				mod.provision = func(ctx *Context) error { return errors.New("foo") }
-
+				mod.ProvisionMock = func(ctx *Context) error { return errors.New("foo") }
 				return []ModuleDescriptor{mod.Descriptor()}
 			}(),
-			kind:      new(Provisioner),
-			expectErr: true,
+			kind:        new(Provisioner),
+			expectError: true,
 		},
 		{
+			scenario: "two modules instead of one",
 			mods: func() []ModuleDescriptor {
-				mod := struct{ ProtoProvisioner }{}
-				mod.descriptor = func() ModuleDescriptor {
+				mod := &struct {
+					ModuleMock
+					ProvisionerMock
+				}{}
+				mod.DescriptorMock = func() ModuleDescriptor {
 					return ModuleDescriptor{ID: "foo", New: func() Module { return mod }}
 				}
-				mod.provision = func(ctx *Context) error { return nil }
-
+				mod.ProvisionMock = func(ctx *Context) error { return nil }
 				return []ModuleDescriptor{mod.Descriptor(), mod.Descriptor()}
 			}(),
-			kind:      new(Provisioner),
-			expectErr: true,
+			kind:        new(Provisioner),
+			expectError: true,
 		},
 		{
+			scenario: "success",
 			mods: func() []ModuleDescriptor {
-				mod := struct{ ProtoProvisioner }{}
-				mod.descriptor = func() ModuleDescriptor {
+				mod := &struct {
+					ModuleMock
+					ProvisionerMock
+				}{}
+				mod.DescriptorMock = func() ModuleDescriptor {
 					return ModuleDescriptor{ID: "foo", New: func() Module { return mod }}
 				}
-				mod.provision = func(ctx *Context) error { return nil }
-
+				mod.ProvisionMock = func(ctx *Context) error { return nil }
 				return []ModuleDescriptor{mod.Descriptor()}
 			}(),
-			kind: new(Provisioner),
+			kind:        new(Provisioner),
+			expectError: false,
 		},
 	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			ctx := NewContext(ParsedFlags{}, tc.mods)
+			_, err := ctx.Module(tc.kind)
 
-		ctx := NewContext(ParsedFlags{}, tc.mods)
-		_, err := ctx.Module(tc.kind)
+			if !tc.expectError && err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
 
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			if tc.expectError && err == nil {
+				t.Fatal("expected error but got none")
+			}
+		})
 	}
 }
 
 func TestContext_Modules(t *testing.T) {
-	for i, tc := range []struct {
-		mods      []ModuleDescriptor
-		kind      interface{}
-		expectErr bool
+	for _, tc := range []struct {
+		scenario    string
+		mods        []ModuleDescriptor
+		kind        interface{}
+		expectError bool
 	}{
 		{
+			scenario: "module with error on provision",
 			mods: func() []ModuleDescriptor {
-				mod := struct{ ProtoProvisioner }{}
-				mod.descriptor = func() ModuleDescriptor {
+				mod := &struct {
+					ModuleMock
+					ProvisionerMock
+				}{}
+				mod.DescriptorMock = func() ModuleDescriptor {
 					return ModuleDescriptor{ID: "foo", New: func() Module { return mod }}
 				}
-				mod.provision = func(ctx *Context) error { return errors.New("foo") }
-
+				mod.ProvisionMock = func(ctx *Context) error { return errors.New("foo") }
 				return []ModuleDescriptor{mod.Descriptor()}
 			}(),
-			kind:      new(Provisioner),
-			expectErr: true,
+			kind:        new(Provisioner),
+			expectError: true,
 		},
 		{
+			scenario: "success (module)",
 			mods: func() []ModuleDescriptor {
-				mod := struct{ ProtoProvisioner }{}
-				mod.descriptor = func() ModuleDescriptor {
+				mod := &struct {
+					ModuleMock
+					ProvisionerMock
+				}{}
+				mod.DescriptorMock = func() ModuleDescriptor {
 					return ModuleDescriptor{ID: "foo", New: func() Module { return mod }}
 				}
-				mod.provision = func(ctx *Context) error { return nil }
-
+				mod.ProvisionMock = func(ctx *Context) error { return nil }
 				return []ModuleDescriptor{mod.Descriptor(), mod.Descriptor()}
 			}(),
-			kind: new(Provisioner),
+			kind:        new(Provisioner),
+			expectError: false,
 		},
 		{
+			scenario: "success (one module)",
 			mods: func() []ModuleDescriptor {
-				mod := struct{ ProtoProvisioner }{}
-				mod.descriptor = func() ModuleDescriptor {
+				mod := &struct {
+					ModuleMock
+					ProvisionerMock
+				}{}
+				mod.DescriptorMock = func() ModuleDescriptor {
 					return ModuleDescriptor{ID: "foo", New: func() Module { return mod }}
 				}
-				mod.provision = func(ctx *Context) error { return nil }
+				mod.ProvisionMock = func(ctx *Context) error { return nil }
 
 				return []ModuleDescriptor{mod.Descriptor()}
 			}(),
-			kind: new(Provisioner),
+			kind:        new(Provisioner),
+			expectError: false,
 		},
 	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			ctx := NewContext(ParsedFlags{}, tc.mods)
+			_, err := ctx.Modules(tc.kind)
 
-		ctx := NewContext(ParsedFlags{}, tc.mods)
-		_, err := ctx.Modules(tc.kind)
+			if !tc.expectError && err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
 
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			if tc.expectError && err == nil {
+				t.Fatal("expected error but got none")
+			}
+		})
 	}
 }
 
 func TestContext_loadModule(t *testing.T) {
-	for i, tc := range []struct {
-		instance  interface{}
-		expectErr bool
+	for _, tc := range []struct {
+		scenario    string
+		instance    interface{}
+		expectError bool
 	}{
 		{
+			scenario: "module with error on provision",
 			instance: func() interface{} {
-				mod := struct{ ProtoProvisioner }{}
-				mod.descriptor = func() ModuleDescriptor {
+				mod := &struct {
+					ModuleMock
+					ProvisionerMock
+				}{}
+				mod.DescriptorMock = func() ModuleDescriptor {
 					return ModuleDescriptor{ID: "foo", New: func() Module { return mod }}
 				}
-				mod.provision = func(ctx *Context) error { return errors.New("foo") }
-
+				mod.ProvisionMock = func(ctx *Context) error { return errors.New("foo") }
 				return mod
 			}(),
-			expectErr: true,
+			expectError: true,
 		},
 		{
+			scenario: "module with error on validation",
 			instance: func() interface{} {
-				mod := struct{ ProtoValidator }{}
-				mod.descriptor = func() ModuleDescriptor {
+				mod := &struct {
+					ModuleMock
+					ValidatorMock
+				}{}
+				mod.DescriptorMock = func() ModuleDescriptor {
 					return ModuleDescriptor{ID: "foo", New: func() Module { return mod }}
 				}
-				mod.validate = func() error { return errors.New("foo") }
-
+				mod.ValidateMock = func() error { return errors.New("foo") }
 				return mod
 			}(),
-			expectErr: true,
+			expectError: true,
 		},
 		{
+			scenario: "success",
 			instance: func() interface{} {
-				mod := struct{ ProtoValidator }{}
-				mod.descriptor = func() ModuleDescriptor {
+				mod := &struct {
+					ModuleMock
+					ValidatorMock
+				}{}
+				mod.DescriptorMock = func() ModuleDescriptor {
 					return ModuleDescriptor{ID: "foo", New: func() Module { return mod }}
 				}
-				mod.validate = func() error { return nil }
+				mod.ValidateMock = func() error { return nil }
 
 				return mod
 			}(),
+			expectError: false,
 		},
 	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			ctx := NewContext(ParsedFlags{}, nil)
+			err := ctx.loadModule("foo", tc.instance)
 
-		ctx := NewContext(ParsedFlags{}, nil)
-		err := ctx.loadModule("foo", tc.instance)
+			if !tc.expectError && err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
 
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
+			if tc.expectError && err == nil {
+				t.Fatal("expected error but got none")
+			}
+		})
 	}
 }

pkg/gotenberg/debug.go

@@ -0,0 +1,68 @@
+package gotenberg
+
+import (
+	"runtime"
+	"sort"
+	"sync"
+
+	flag "github.com/spf13/pflag"
+)
+
+// DebugInfo gathers data for debugging.
+type DebugInfo struct {
+	Version               string                            `json:"version"`
+	Architecture          string                            `json:"architecture"`
+	Modules               []string                          `json:"modules"`
+	ModulesAdditionalData map[string]map[string]interface{} `json:"modules_additional_data"`
+	Flags                 map[string]interface{}            `json:"flags"`
+}
+
+// BuildDebug builds the debug data from modules.
+func BuildDebug(ctx *Context) {
+	debugMu.Lock()
+	defer debugMu.Unlock()
+
+	debug = &DebugInfo{
+		Version:               Version,
+		Architecture:          runtime.GOARCH,
+		Modules:               make([]string, len(ctx.moduleInstances)),
+		ModulesAdditionalData: make(map[string]map[string]interface{}),
+		Flags:                 make(map[string]interface{}),
+	}
+
+	i := 0
+	for ID, mod := range ctx.moduleInstances {
+		debug.Modules[i] = ID
+		i++
+
+		debuggable, ok := mod.(Debuggable)
+		if !ok {
+			continue
+		}
+
+		debug.ModulesAdditionalData[ID] = debuggable.Debug()
+	}
+
+	sort.Sort(AlphanumericSort(debug.Modules))
+
+	ctx.ParsedFlags().VisitAll(func(f *flag.Flag) {
+		debug.Flags[f.Name] = f.Value.String()
+	})
+}
+
+// Debug returns the debug data.
+func Debug() DebugInfo {
+	debugMu.Lock()
+	defer debugMu.Unlock()
+
+	if debug == nil {
+		return DebugInfo{}
+	}
+
+	return *debug
+}
+
+var (
+	debug   *DebugInfo
+	debugMu sync.Mutex
+)

pkg/gotenberg/debug_test.go

@@ -0,0 +1,72 @@
+package gotenberg
+
+import (
+	"reflect"
+	"runtime"
+	"testing"
+
+	flag "github.com/spf13/pflag"
+)
+
+func TestBuildDebug(t *testing.T) {
+	if !reflect.DeepEqual(Debug(), DebugInfo{}) {
+		t.Errorf("Debug() should return empty debug data")
+	}
+
+	fs := flag.NewFlagSet("gotenberg", flag.ExitOnError)
+	fs.String("foo", "bar", "Set foo")
+	ctx := NewContext(ParsedFlags{
+		FlagSet: fs,
+	}, func() []ModuleDescriptor {
+		mod1 := &struct {
+			ModuleMock
+		}{}
+		mod1.DescriptorMock = func() ModuleDescriptor {
+			return ModuleDescriptor{ID: "foo", New: func() Module { return mod1 }}
+		}
+		mod2 := &struct {
+			ModuleMock
+			DebuggableMock
+		}{}
+		mod2.DescriptorMock = func() ModuleDescriptor {
+			return ModuleDescriptor{ID: "bar", New: func() Module { return mod2 }}
+		}
+		mod2.DebugMock = func() map[string]interface{} {
+			return map[string]interface{}{
+				"foo": "bar",
+			}
+		}
+
+		return []ModuleDescriptor{mod1.Descriptor(), mod2.Descriptor()}
+	}())
+
+	// Load modules.
+	_, err := ctx.Modules(new(Module))
+	if err != nil {
+		t.Errorf("expected no error but got: %v", err)
+	}
+
+	// Build debug data.
+	BuildDebug(ctx)
+
+	expect := DebugInfo{
+		Version:      Version,
+		Architecture: runtime.GOARCH,
+		Modules: []string{
+			"bar",
+			"foo",
+		},
+		ModulesAdditionalData: map[string]map[string]interface{}{
+			"bar": {
+				"foo": "bar",
+			},
+		},
+		Flags: map[string]interface{}{
+			"foo": "bar",
+		},
+	}
+
+	if !reflect.DeepEqual(expect, Debug()) {
+		t.Errorf("expected '%+v', bug got '%+v'", expect, Debug())
+	}
+}

pkg/gotenberg/env.go

@@ -0,0 +1,35 @@
+package gotenberg
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+)
+
+// StringEnv retrieves the value of the environment variable named by the key.
+// If the variable is present in the environment and not empty, the value is
+// returned.
+func StringEnv(key string) (string, error) {
+	val, ok := os.LookupEnv(key)
+	if !ok {
+		return "", fmt.Errorf("environment variable '%s' does not exist", key)
+	}
+	if val == "" {
+		return "", fmt.Errorf("environment variable '%s' is empty", key)
+	}
+	return val, nil
+}
+
+// IntEnv relies on [StringEnv] and converts the values if it exists and is not
+// empty.
+func IntEnv(key string) (int, error) {
+	val, err := StringEnv(key)
+	if err != nil {
+		return 0, err
+	}
+	intVal, err := strconv.Atoi(val)
+	if err != nil {
+		return 0, fmt.Errorf("get int value of environment variable '%s': %w", key, err)
+	}
+	return intVal, nil
+}

pkg/gotenberg/env_test.go

@@ -0,0 +1,134 @@
+package gotenberg
+
+import (
+	"os"
+	"testing"
+)
+
+func TestStringEnv(t *testing.T) {
+	for _, tc := range []struct {
+		scenario    string
+		key         string
+		setEnv      func()
+		expectVal   string
+		expectError bool
+	}{
+		{
+			scenario:    "non-existing environment variable",
+			key:         "NON_EXISTING",
+			expectVal:   "",
+			expectError: true,
+		},
+		{
+			scenario: "empty environment variable",
+			key:      "EMPTY_STRING",
+			setEnv: func() {
+				err := os.Setenv("EMPTY_STRING", "")
+				if err != nil {
+					t.Fatalf("expected no error but got: %v", err)
+				}
+			},
+			expectVal:   "",
+			expectError: true,
+		},
+		{
+			scenario: "success",
+			key:      "EXISTING_STRING_VALUE",
+			setEnv: func() {
+				err := os.Setenv("EXISTING_STRING_VALUE", "foo")
+				if err != nil {
+					t.Fatalf("expected no error but got: %v", err)
+				}
+			},
+			expectVal:   "foo",
+			expectError: false,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			if tc.setEnv != nil {
+				tc.setEnv()
+			}
+
+			val, err := StringEnv(tc.key)
+
+			if !tc.expectError && err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
+
+			if tc.expectError && err == nil {
+				t.Fatal("expected error but got none")
+			}
+
+			if tc.expectVal != val {
+				t.Errorf("expected value '%s' but got '%s'", tc.expectVal, val)
+			}
+		})
+	}
+}
+
+func TestIntEnv(t *testing.T) {
+	for _, tc := range []struct {
+		scenario    string
+		key         string
+		setEnv      func()
+		expectVal   int
+		expectError bool
+	}{
+		{
+			scenario: "empty environment variable",
+			key:      "EMPTY_INT",
+			setEnv: func() {
+				err := os.Setenv("EMPTY_INT", "")
+				if err != nil {
+					t.Fatalf("expected no error but got: %v", err)
+				}
+			},
+			expectVal:   0,
+			expectError: true,
+		},
+		{
+			scenario: "non-integer value",
+			key:      "NON_INTEGER",
+			setEnv: func() {
+				err := os.Setenv("NON_INTEGER", "foo")
+				if err != nil {
+					t.Fatalf("expected no error but got: %v", err)
+				}
+			},
+			expectVal:   0,
+			expectError: true,
+		},
+		{
+			scenario: "success",
+			key:      "EXISTING_INT_VALUE",
+			setEnv: func() {
+				err := os.Setenv("EXISTING_INT_VALUE", "123")
+				if err != nil {
+					t.Fatalf("expected no error but got: %v", err)
+				}
+			},
+			expectVal:   123,
+			expectError: false,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			if tc.setEnv != nil {
+				tc.setEnv()
+			}
+
+			val, err := IntEnv(tc.key)
+
+			if !tc.expectError && err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
+
+			if tc.expectError && err == nil {
+				t.Fatal("expected error but got none")
+			}
+
+			if tc.expectVal != val {
+				t.Errorf("expected value %d but got %d", tc.expectVal, val)
+			}
+		})
+	}
+}

pkg/gotenberg/filter.go

@@ -0,0 +1,53 @@
+package gotenberg
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"github.com/dlclark/regexp2"
+)
+
+// ErrFiltered happens if a value is filtered by the [FilterDeadline] function.
+var ErrFiltered = errors.New("value filtered")
+
+// FilterDeadline checks if given value is allowed and not denied according to
+// regex patterns. It returns a [context.DeadlineExceeded] if it takes too long
+// to process.
+func FilterDeadline(allowed, denied *regexp2.Regexp, s string, deadline time.Time) error {
+	// FIXME: not ideal to compile everytime, but is there another way to create a clone?
+	if allowed.String() != "" {
+		allow := regexp2.MustCompile(allowed.String(), 0)
+		allow.MatchTimeout = time.Until(deadline)
+
+		ok, err := allow.MatchString(s)
+		if err != nil {
+			if time.Now().After(deadline) {
+				return context.DeadlineExceeded
+			}
+			return fmt.Errorf("'%s' cannot handle '%s': %w", allow.String(), s, err)
+		}
+		if !ok {
+			return fmt.Errorf("'%s' does not match the expression from the allowed list: %w", s, ErrFiltered)
+		}
+	}
+
+	if denied.String() != "" {
+		deny := regexp2.MustCompile(denied.String(), 0)
+		deny.MatchTimeout = time.Until(deadline)
+
+		ok, err := deny.MatchString(s)
+		if err != nil {
+			if time.Now().After(deadline) {
+				return context.DeadlineExceeded
+			}
+			return fmt.Errorf("'%s' cannot handle '%s': %w", deny.String(), s, err)
+		}
+		if ok {
+			return fmt.Errorf("'%s' matches the expression from the denied list: %w", s, ErrFiltered)
+		}
+	}
+
+	return nil
+}

pkg/gotenberg/filter_test.go

@@ -0,0 +1,83 @@
+package gotenberg
+
+import (
+	"context"
+	"errors"
+	"testing"
+	"time"
+
+	"github.com/dlclark/regexp2"
+)
+
+func TestFilterDeadline(t *testing.T) {
+	for _, tc := range []struct {
+		scenario      string
+		allowed       *regexp2.Regexp
+		denied        *regexp2.Regexp
+		s             string
+		deadline      time.Time
+		expectError   bool
+		expectedError error
+	}{
+		{
+			scenario:      "DeadlineExceeded (allowed)",
+			allowed:       regexp2.MustCompile("foo", 0),
+			denied:        regexp2.MustCompile("", 0),
+			s:             "foo",
+			deadline:      time.Now().Add(time.Duration(-1) * time.Hour),
+			expectError:   true,
+			expectedError: context.DeadlineExceeded,
+		},
+		{
+			scenario:      "ErrFiltered (allowed)",
+			allowed:       regexp2.MustCompile("foo", 0),
+			denied:        regexp2.MustCompile("", 0),
+			s:             "bar",
+			deadline:      time.Now().Add(time.Duration(5) * time.Second),
+			expectError:   true,
+			expectedError: ErrFiltered,
+		},
+		{
+			scenario:      "DeadlineExceeded (denied)",
+			allowed:       regexp2.MustCompile("", 0),
+			denied:        regexp2.MustCompile("foo", 0),
+			s:             "foo",
+			deadline:      time.Now().Add(time.Duration(-1) * time.Hour),
+			expectError:   true,
+			expectedError: context.DeadlineExceeded,
+		},
+		{
+			scenario:      "ErrFiltered (denied)",
+			allowed:       regexp2.MustCompile("", 0),
+			denied:        regexp2.MustCompile("foo", 0),
+			s:             "foo",
+			deadline:      time.Now().Add(time.Duration(5) * time.Second),
+			expectError:   true,
+			expectedError: ErrFiltered,
+		},
+		{
+			scenario:    "success",
+			allowed:     regexp2.MustCompile("", 0),
+			denied:      regexp2.MustCompile("", 0),
+			s:           "foo",
+			deadline:    time.Now().Add(time.Duration(5) * time.Second),
+			expectError: false,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			err := FilterDeadline(tc.allowed, tc.denied, tc.s, tc.deadline)
+
+			if tc.expectError && err == nil {
+				t.Fatal("expected an error but got none")
+			}
+
+			if !tc.expectError && err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
+
+			if tc.expectedError != nil && !errors.Is(err, tc.expectedError) {
+				t.Fatalf("expected error %v but got: %v", tc.expectedError, err)
+			}
+		})
+	}
+}

pkg/gotenberg/flags.go

@@ -1,14 +1,14 @@
 package gotenberg
 
 import (
-	"regexp"
 	"time"
 
+	"github.com/dlclark/regexp2"
 	"github.com/labstack/gommon/bytes"
 	flag "github.com/spf13/pflag"
 )
 
-// ParsedFlags wraps a flag.FlagSet so that retrieving the typed values is
+// ParsedFlags wraps a [flag.FlagSet] so that retrieving the typed values is
 // easier.
 type ParsedFlags struct {
 	*flag.FlagSet
@@ -80,6 +80,28 @@ func (f *ParsedFlags) MustDeprecatedBool(deprecated string, newName string) bool
 	return f.MustBool(newName)
 }
 
+// MustInt64 returns the int64 value of a flag given by name.
+// It panics if an error occurs.
+func (f *ParsedFlags) MustInt64(name string) int64 {
+	val, err := f.GetInt64(name)
+	if err != nil {
+		panic(err)
+	}
+
+	return val
+}
+
+// MustDeprecatedInt64 returns the int64 value of a deprecated flag if it was
+// explicitly set or the int64 value of the new flag.
+// It panics if an error occurs.
+func (f *ParsedFlags) MustDeprecatedInt64(deprecated string, newName string) int64 {
+	if f.Changed(deprecated) {
+		return f.MustInt64(deprecated)
+	}
+
+	return f.MustInt64(newName)
+}
+
 // MustInt returns the int value of a flag given by name.
 // It panics if an error occurs.
 func (f *ParsedFlags) MustInt(name string) int {
@@ -146,50 +168,54 @@ func (f *ParsedFlags) MustDeprecatedDuration(deprecated string, newName string)
 	return f.MustDuration(newName)
 }
 
-// MustHumanReadableBytesString returns the human-readable bytes string of a
-// flag given by name.
+// MustHumanReadableBytes returns the human-readable bytes string of a flag
+// given by name.
 // It panics if an error occurs.
-func (f *ParsedFlags) MustHumanReadableBytesString(name string) string {
+func (f *ParsedFlags) MustHumanReadableBytes(name string) int64 {
 	val, err := f.GetString(name)
 	if err != nil {
 		panic(err)
 	}
 
-	_, err = bytes.Parse(val)
+	if val == "" {
+		return 0
+	}
+
+	b, err := bytes.Parse(val)
 	if err != nil {
 		panic(err)
 	}
 
-	return val
+	return b
 }
 
-// MustDeprecatedHumanReadableBytesString returns the human-readable bytes
-// string of a deprecated flag if it was explicitly set or the human-readable
-// bytes string of the new flag.
+// MustDeprecatedHumanReadableBytes returns the human-readable bytes of a
+// deprecated flag if it was explicitly set or the human-readable bytes string
+// of the new flag.
 // It panics if an error occurs.
-func (f *ParsedFlags) MustDeprecatedHumanReadableBytesString(deprecated string, newName string) string {
+func (f *ParsedFlags) MustDeprecatedHumanReadableBytes(deprecated string, newName string) int64 {
 	if f.Changed(deprecated) {
-		return f.MustHumanReadableBytesString(deprecated)
+		return f.MustHumanReadableBytes(deprecated)
 	}
 
-	return f.MustHumanReadableBytesString(newName)
+	return f.MustHumanReadableBytes(newName)
 }
 
 // MustRegexp returns the regular expression of a flag given by name.
 // It panics if an error occurs.
-func (f *ParsedFlags) MustRegexp(name string) *regexp.Regexp {
+func (f *ParsedFlags) MustRegexp(name string) *regexp2.Regexp {
 	val, err := f.GetString(name)
 	if err != nil {
 		panic(err)
 	}
 
-	return regexp.MustCompile(val)
+	return regexp2.MustCompile(val, 0)
 }
 
 // MustDeprecatedRegexp returns the regular expression of a deprecated flag if
 // it was explicitly set or the regular expression of the new flag.
 // It panics if an error occurs.
-func (f *ParsedFlags) MustDeprecatedRegexp(deprecated string, newName string) *regexp.Regexp {
+func (f *ParsedFlags) MustDeprecatedRegexp(deprecated string, newName string) *regexp2.Regexp {
 	if f.Changed(deprecated) {
 		return f.MustRegexp(deprecated)
 	}

pkg/gotenberg/flags_test.go

@@ -20,23 +20,27 @@ func TestParsedFlags_MustString(t *testing.T) {
 
 	parsedFlags := ParsedFlags{FlagSet: fs}
 
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		name        string
 		expectPanic bool
 	}{
 		{
-			name: "foo",
+			scenario:    "success",
+			name:        "foo",
+			expectPanic: false,
 		},
 		{
+			scenario:    "non-existing flag",
 			name:        "bar",
 			expectPanic: true,
 		},
 	} {
-		func() {
+		t.Run(tc.scenario, func(t *testing.T) {
 			if tc.expectPanic {
 				defer func() {
 					if r := recover(); r == nil {
-						t.Errorf("test %d: expected panic but got none", i)
+						t.Fatal("expected panic but got none")
 					}
 				}()
 			}
@@ -44,49 +48,55 @@ func TestParsedFlags_MustString(t *testing.T) {
 			if !tc.expectPanic {
 				defer func() {
 					if r := recover(); r != nil {
-						t.Errorf("test %d: expected no panic but got: %v", i, r)
+						t.Fatalf("expected no panic but got: %v", r)
 					}
 				}()
 			}
 
 			parsedFlags.MustString(tc.name)
-		}()
+		})
 	}
 }
 
 func TestParsedFlags_MustDeprecatedString(t *testing.T) {
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		rawFlags    []string
 		expectValue string
 	}{
 		{
+			scenario:    "deprecated flag value",
 			rawFlags:    []string{"--foo=foo"},
 			expectValue: "foo",
 		},
 		{
+			scenario:    "non-deprecated flag value",
 			rawFlags:    []string{"--bar=bar"},
 			expectValue: "bar",
 		},
 		{
+			scenario:    "deprecated flag value > non-deprecated flag value",
 			rawFlags:    []string{"--foo=foo", "--bar=bar"},
 			expectValue: "foo",
 		},
 	} {
-		fs := flag.NewFlagSet("tests", flag.ContinueOnError)
-		fs.String("foo", "", "")
-		fs.String("bar", "", "")
+		t.Run(tc.scenario, func(t *testing.T) {
+			fs := flag.NewFlagSet("tests", flag.ContinueOnError)
+			fs.String("foo", "", "")
+			fs.String("bar", "", "")
 
-		parsedFlags := ParsedFlags{FlagSet: fs}
+			parsedFlags := ParsedFlags{FlagSet: fs}
 
-		err := parsedFlags.Parse(tc.rawFlags)
-		if err != nil {
-			t.Fatalf("test %d: expected no error but got: %v", i, err)
-		}
+			err := parsedFlags.Parse(tc.rawFlags)
+			if err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
 
-		actual := parsedFlags.MustDeprecatedString("foo", "bar")
-		if actual != tc.expectValue {
-			t.Errorf("test %d: expected '%s' but got '%s'", i, tc.expectValue, actual)
-		}
+			actual := parsedFlags.MustDeprecatedString("foo", "bar")
+			if actual != tc.expectValue {
+				t.Errorf("expected '%s' but got '%s'", tc.expectValue, actual)
+			}
+		})
 	}
 }
 
@@ -101,23 +111,27 @@ func TestParsedFlags_MustStringSlice(t *testing.T) {
 
 	parsedFlags := ParsedFlags{FlagSet: fs}
 
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		name        string
 		expectPanic bool
 	}{
 		{
-			name: "foo",
+			scenario:    "success",
+			name:        "foo",
+			expectPanic: false,
 		},
 		{
+			scenario:    "non-existing flag",
 			name:        "bar",
 			expectPanic: true,
 		},
 	} {
-		func() {
+		t.Run(tc.scenario, func(t *testing.T) {
 			if tc.expectPanic {
 				defer func() {
 					if r := recover(); r == nil {
-						t.Errorf("test %d: expected panic but got none", i)
+						t.Fatal("expected panic but got none")
 					}
 				}()
 			}
@@ -125,49 +139,55 @@ func TestParsedFlags_MustStringSlice(t *testing.T) {
 			if !tc.expectPanic {
 				defer func() {
 					if r := recover(); r != nil {
-						t.Errorf("test %d: expected no panic but got: %v", i, r)
+						t.Fatalf("expected no panic but got: %v", r)
 					}
 				}()
 			}
 
 			parsedFlags.MustStringSlice(tc.name)
-		}()
+		})
 	}
 }
 
 func TestParsedFlags_MustDeprecatedStringSlice(t *testing.T) {
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		rawFlags    []string
 		expectValue []string
 	}{
 		{
+			scenario:    "deprecated flag value",
 			rawFlags:    []string{"--foo=foo"},
 			expectValue: []string{"foo"},
 		},
 		{
+			scenario:    "non-deprecated flag value",
 			rawFlags:    []string{"--bar=bar"},
 			expectValue: []string{"bar"},
 		},
 		{
+			scenario:    "deprecated flag value > non-deprecated flag value",
 			rawFlags:    []string{"--foo=foo", "--bar=bar"},
 			expectValue: []string{"foo"},
 		},
 	} {
-		fs := flag.NewFlagSet("tests", flag.ContinueOnError)
-		fs.StringSlice("foo", make([]string, 0), "")
-		fs.StringSlice("bar", make([]string, 0), "")
+		t.Run(tc.scenario, func(t *testing.T) {
+			fs := flag.NewFlagSet("tests", flag.ContinueOnError)
+			fs.StringSlice("foo", make([]string, 0), "")
+			fs.StringSlice("bar", make([]string, 0), "")
 
-		parsedFlags := ParsedFlags{FlagSet: fs}
+			parsedFlags := ParsedFlags{FlagSet: fs}
 
-		err := parsedFlags.Parse(tc.rawFlags)
-		if err != nil {
-			t.Fatalf("test %d: expected no error but got: %v", i, err)
-		}
+			err := parsedFlags.Parse(tc.rawFlags)
+			if err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
 
-		actual := parsedFlags.MustDeprecatedStringSlice("foo", "bar")
-		if !reflect.DeepEqual(actual, tc.expectValue) {
-			t.Errorf("test %d: expected %+v but got %+v", i, tc.expectValue, actual)
-		}
+			actual := parsedFlags.MustDeprecatedStringSlice("foo", "bar")
+			if !reflect.DeepEqual(actual, tc.expectValue) {
+				t.Errorf("expected %+v but got %+v", tc.expectValue, actual)
+			}
+		})
 	}
 }
 
@@ -182,23 +202,27 @@ func TestParsedFlags_MustBool(t *testing.T) {
 
 	parsedFlags := ParsedFlags{FlagSet: fs}
 
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		name        string
 		expectPanic bool
 	}{
 		{
-			name: "foo",
+			scenario:    "success",
+			name:        "foo",
+			expectPanic: false,
 		},
 		{
+			scenario:    "non-existing flag",
 			name:        "bar",
 			expectPanic: true,
 		},
 	} {
-		func() {
+		t.Run(tc.scenario, func(t *testing.T) {
 			if tc.expectPanic {
 				defer func() {
 					if r := recover(); r == nil {
-						t.Errorf("test %d: expected panic but got none", i)
+						t.Fatal("expected panic but got none")
 					}
 				}()
 			}
@@ -206,48 +230,143 @@ func TestParsedFlags_MustBool(t *testing.T) {
 			if !tc.expectPanic {
 				defer func() {
 					if r := recover(); r != nil {
-						t.Errorf("test %d: expected no panic but got: %v", i, r)
+						t.Fatalf("expected no panic but got: %v", r)
 					}
 				}()
 			}
 
 			parsedFlags.MustBool(tc.name)
-		}()
+		})
 	}
 }
 
 func TestParsedFlags_MustDeprecatedBool(t *testing.T) {
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		rawFlags    []string
 		expectValue bool
 	}{
 		{
+			scenario:    "deprecated flag value",
 			rawFlags:    []string{"--foo=true"},
 			expectValue: true,
 		},
 		{
+			scenario:    "non-deprecated flag value",
 			rawFlags:    []string{"--bar=false"},
 			expectValue: false,
 		},
 		{
+			scenario:    "deprecated flag value > non-deprecated flag value",
 			rawFlags:    []string{"--foo=true", "--bar=false"},
 			expectValue: true,
 		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			fs := flag.NewFlagSet("tests", flag.ContinueOnError)
+			fs.Bool("foo", false, "")
+			fs.Bool("bar", true, "")
+
+			parsedFlags := ParsedFlags{FlagSet: fs}
+
+			err := parsedFlags.Parse(tc.rawFlags)
+			if err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
+
+			actual := parsedFlags.MustDeprecatedBool("foo", "bar")
+			if actual != tc.expectValue {
+				t.Errorf("expected %v but got %v", tc.expectValue, actual)
+			}
+		})
+	}
+}
+
+func TestParsedFlags_MustInt64(t *testing.T) {
+	fs := flag.NewFlagSet("tests", flag.ContinueOnError)
+	fs.Int64("foo", 0, "")
+
+	err := fs.Parse([]string{"--foo=1"})
+	if err != nil {
+		t.Fatalf("expected no error but got: %v", err)
+	}
+
+	parsedFlags := ParsedFlags{FlagSet: fs}
+
+	for _, tc := range []struct {
+		scenario    string
+		name        string
+		expectPanic bool
+	}{
+		{
+			scenario:    "success",
+			name:        "foo",
+			expectPanic: false,
+		},
+		{
+			scenario:    "non-existing flag",
+			name:        "bar",
+			expectPanic: true,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			if tc.expectPanic {
+				defer func() {
+					if r := recover(); r == nil {
+						t.Fatal("expected panic but got none")
+					}
+				}()
+			}
+
+			if !tc.expectPanic {
+				defer func() {
+					if r := recover(); r != nil {
+						t.Fatalf("expected no panic but got: %v", r)
+					}
+				}()
+			}
+
+			parsedFlags.MustInt64(tc.name)
+		})
+	}
+}
+
+func TestParsedFlags_MustDeprecatedInt64(t *testing.T) {
+	for _, tc := range []struct {
+		scenario    string
+		rawFlags    []string
+		expectValue int64
+	}{
+		{
+			scenario:    "deprecated flag value",
+			rawFlags:    []string{"--foo=1"},
+			expectValue: 1,
+		},
+		{
+			scenario:    "non-deprecated flag value",
+			rawFlags:    []string{"--bar=2"},
+			expectValue: 2,
+		},
+		{
+			scenario:    "deprecated flag value > non-deprecated flag value",
+			rawFlags:    []string{"--foo=1", "--bar=2"},
+			expectValue: 1,
+		},
 	} {
 		fs := flag.NewFlagSet("tests", flag.ContinueOnError)
-		fs.Bool("foo", false, "")
-		fs.Bool("bar", true, "")
+		fs.Int64("foo", 0, "")
+		fs.Int64("bar", 0, "")
 
 		parsedFlags := ParsedFlags{FlagSet: fs}
 
 		err := parsedFlags.Parse(tc.rawFlags)
 		if err != nil {
-			t.Fatalf("test %d: expected no error but got: %v", i, err)
+			t.Fatalf("expected no error but got: %v", err)
 		}
 
-		actual := parsedFlags.MustDeprecatedBool("foo", "bar")
+		actual := parsedFlags.MustDeprecatedInt64("foo", "bar")
 		if actual != tc.expectValue {
-			t.Errorf("test %d: expected %v but got %v", i, tc.expectValue, actual)
+			t.Errorf("expected %d but got %d", tc.expectValue, actual)
 		}
 	}
 }
@@ -263,23 +382,27 @@ func TestParsedFlags_MustInt(t *testing.T) {
 
 	parsedFlags := ParsedFlags{FlagSet: fs}
 
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		name        string
 		expectPanic bool
 	}{
 		{
-			name: "foo",
+			scenario:    "success",
+			name:        "foo",
+			expectPanic: false,
 		},
 		{
+			scenario:    "non-existing flag",
 			name:        "bar",
 			expectPanic: true,
 		},
 	} {
-		func() {
+		t.Run(tc.scenario, func(t *testing.T) {
 			if tc.expectPanic {
 				defer func() {
 					if r := recover(); r == nil {
-						t.Errorf("test %d: expected panic but got none", i)
+						t.Fatal("expected panic but got none")
 					}
 				}()
 			}
@@ -287,49 +410,55 @@ func TestParsedFlags_MustInt(t *testing.T) {
 			if !tc.expectPanic {
 				defer func() {
 					if r := recover(); r != nil {
-						t.Errorf("test %d: expected no panic but got: %v", i, r)
+						t.Fatalf("expected no panic but got: %v", r)
 					}
 				}()
 			}
 
 			parsedFlags.MustInt(tc.name)
-		}()
+		})
 	}
 }
 
 func TestParsedFlags_MustDeprecatedInt(t *testing.T) {
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		rawFlags    []string
 		expectValue int
 	}{
 		{
+			scenario:    "deprecated flag value",
 			rawFlags:    []string{"--foo=1"},
 			expectValue: 1,
 		},
 		{
+			scenario:    "non-deprecated flag value",
 			rawFlags:    []string{"--bar=2"},
 			expectValue: 2,
 		},
 		{
+			scenario:    "deprecated flag value > non-deprecated flag value",
 			rawFlags:    []string{"--foo=1", "--bar=2"},
 			expectValue: 1,
 		},
 	} {
-		fs := flag.NewFlagSet("tests", flag.ContinueOnError)
-		fs.Int("foo", 0, "")
-		fs.Int("bar", 0, "")
+		t.Run(tc.scenario, func(t *testing.T) {
+			fs := flag.NewFlagSet("tests", flag.ContinueOnError)
+			fs.Int("foo", 0, "")
+			fs.Int("bar", 0, "")
 
-		parsedFlags := ParsedFlags{FlagSet: fs}
+			parsedFlags := ParsedFlags{FlagSet: fs}
 
-		err := parsedFlags.Parse(tc.rawFlags)
-		if err != nil {
-			t.Fatalf("test %d: expected no error but got: %v", i, err)
-		}
+			err := parsedFlags.Parse(tc.rawFlags)
+			if err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
 
-		actual := parsedFlags.MustDeprecatedInt("foo", "bar")
-		if actual != tc.expectValue {
-			t.Errorf("test %d: expected %d but got %d", i, tc.expectValue, actual)
-		}
+			actual := parsedFlags.MustDeprecatedInt("foo", "bar")
+			if actual != tc.expectValue {
+				t.Errorf("expected %d but got %d", tc.expectValue, actual)
+			}
+		})
 	}
 }
 
@@ -344,23 +473,27 @@ func TestParsedFlags_MustFloat64(t *testing.T) {
 
 	parsedFlags := ParsedFlags{FlagSet: fs}
 
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		name        string
 		expectPanic bool
 	}{
 		{
-			name: "foo",
+			scenario:    "success",
+			name:        "foo",
+			expectPanic: false,
 		},
 		{
+			scenario:    "non-existing flag",
 			name:        "bar",
 			expectPanic: true,
 		},
 	} {
-		func() {
+		t.Run(tc.scenario, func(t *testing.T) {
 			if tc.expectPanic {
 				defer func() {
 					if r := recover(); r == nil {
-						t.Errorf("test %d: expected panic but got none", i)
+						t.Fatal("expected panic but got none")
 					}
 				}()
 			}
@@ -368,49 +501,55 @@ func TestParsedFlags_MustFloat64(t *testing.T) {
 			if !tc.expectPanic {
 				defer func() {
 					if r := recover(); r != nil {
-						t.Errorf("test %d: expected no panic but got: %v", i, r)
+						t.Fatalf("expected no panic but got: %v", r)
 					}
 				}()
 			}
 
 			parsedFlags.MustFloat64(tc.name)
-		}()
+		})
 	}
 }
 
 func TestParsedFlags_MustDeprecatedFloat64(t *testing.T) {
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		rawFlags    []string
 		expectValue float64
 	}{
 		{
+			scenario:    "deprecated flag value",
 			rawFlags:    []string{"--foo=1.0"},
 			expectValue: 1.0,
 		},
 		{
+			scenario:    "non-deprecated flag value",
 			rawFlags:    []string{"--bar=2.0"},
 			expectValue: 2.0,
 		},
 		{
+			scenario:    "deprecated flag value > non-deprecated flag value",
 			rawFlags:    []string{"--foo=1.0", "--bar=2.0"},
 			expectValue: 1.0,
 		},
 	} {
-		fs := flag.NewFlagSet("tests", flag.ContinueOnError)
-		fs.Float64("foo", 0, "")
-		fs.Float64("bar", 0, "")
+		t.Run(tc.scenario, func(t *testing.T) {
+			fs := flag.NewFlagSet("tests", flag.ContinueOnError)
+			fs.Float64("foo", 0, "")
+			fs.Float64("bar", 0, "")
 
-		parsedFlags := ParsedFlags{FlagSet: fs}
+			parsedFlags := ParsedFlags{FlagSet: fs}
 
-		err := parsedFlags.Parse(tc.rawFlags)
-		if err != nil {
-			t.Fatalf("test %d: expected no error but got: %v", i, err)
-		}
+			err := parsedFlags.Parse(tc.rawFlags)
+			if err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
 
-		actual := parsedFlags.MustDeprecatedFloat64("foo", "bar")
-		if actual != tc.expectValue {
-			t.Errorf("test %d: expected %f but got %f", i, tc.expectValue, actual)
-		}
+			actual := parsedFlags.MustDeprecatedFloat64("foo", "bar")
+			if actual != tc.expectValue {
+				t.Errorf("expected %f but got %f", tc.expectValue, actual)
+			}
+		})
 	}
 }
 
@@ -425,23 +564,27 @@ func TestParsedFlags_MustDuration(t *testing.T) {
 
 	parsedFlags := ParsedFlags{FlagSet: fs}
 
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		name        string
 		expectPanic bool
 	}{
 		{
-			name: "foo",
+			scenario:    "success",
+			name:        "foo",
+			expectPanic: false,
 		},
 		{
+			scenario:    "non-existing flag",
 			name:        "bar",
 			expectPanic: true,
 		},
 	} {
-		func() {
+		t.Run(tc.scenario, func(t *testing.T) {
 			if tc.expectPanic {
 				defer func() {
 					if r := recover(); r == nil {
-						t.Errorf("test %d: expected panic but got none", i)
+						t.Fatal("expected panic but got none")
 					}
 				}()
 			}
@@ -449,56 +592,63 @@ func TestParsedFlags_MustDuration(t *testing.T) {
 			if !tc.expectPanic {
 				defer func() {
 					if r := recover(); r != nil {
-						t.Errorf("test %d: expected no panic but got: %v", i, r)
+						t.Fatalf("expected no panic but got: %v", r)
 					}
 				}()
 			}
 
 			parsedFlags.MustDuration(tc.name)
-		}()
+		})
 	}
 }
 
 func TestParsedFlags_MustDeprecatedDuration(t *testing.T) {
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		rawFlags    []string
 		expectValue time.Duration
 	}{
 		{
+			scenario:    "deprecated flag value",
 			rawFlags:    []string{"--foo=1s"},
 			expectValue: time.Duration(1) * time.Second,
 		},
 		{
+			scenario:    "non-deprecated flag value",
 			rawFlags:    []string{"--bar=2s"},
 			expectValue: time.Duration(2) * time.Second,
 		},
 		{
+			scenario:    "deprecated flag value > non-deprecated flag value",
 			rawFlags:    []string{"--foo=1s", "--bar=2s"},
 			expectValue: time.Duration(1) * time.Second,
 		},
 	} {
-		fs := flag.NewFlagSet("tests", flag.ContinueOnError)
-		fs.Duration("foo", 0, "")
-		fs.Duration("bar", 0, "")
+		t.Run(tc.scenario, func(t *testing.T) {
+			fs := flag.NewFlagSet("tests", flag.ContinueOnError)
+			fs.Duration("foo", 0, "")
+			fs.Duration("bar", 0, "")
 
-		parsedFlags := ParsedFlags{FlagSet: fs}
+			parsedFlags := ParsedFlags{FlagSet: fs}
 
-		err := parsedFlags.Parse(tc.rawFlags)
-		if err != nil {
-			t.Fatalf("test %d: expected no error but got: %v", i, err)
-		}
+			err := parsedFlags.Parse(tc.rawFlags)
+			if err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
 
-		actual := parsedFlags.MustDeprecatedDuration("foo", "bar")
-		if actual != tc.expectValue {
-			t.Errorf("test %d: expected '%s' but got '%s'", i, tc.expectValue, actual)
-		}
+			actual := parsedFlags.MustDeprecatedDuration("foo", "bar")
+			if actual != tc.expectValue {
+				t.Errorf("expected '%s' but got '%s'", tc.expectValue, actual)
+			}
+		})
 	}
 }
 
-func TestParsedFlags_MustHumanReadableBytesString(t *testing.T) {
+func TestParsedFlags_MustHumanReadableBytes(t *testing.T) {
 	fs := flag.NewFlagSet("tests", flag.ContinueOnError)
 	fs.String("foo", "1MB", "")
 	fs.String("bar", "1MB", "")
+	fs.String("qux", "", "")
 
 	err := fs.Parse([]string{"--foo=1GB", "--bar=foo"})
 	if err != nil {
@@ -507,27 +657,32 @@ func TestParsedFlags_MustHumanReadableBytesString(t *testing.T) {
 
 	parsedFlags := ParsedFlags{FlagSet: fs}
 
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		name        string
 		expectPanic bool
 	}{
 		{
-			name: "foo",
+			scenario:    "success",
+			name:        "foo",
+			expectPanic: false,
 		},
 		{
+			scenario:    "non-existing flag",
 			name:        "bar",
 			expectPanic: true,
 		},
 		{
-			name:        "baz",
-			expectPanic: true,
+			scenario:    "success: empty value",
+			name:        "qux",
+			expectPanic: false,
 		},
 	} {
-		func() {
+		t.Run(tc.scenario, func(t *testing.T) {
 			if tc.expectPanic {
 				defer func() {
 					if r := recover(); r == nil {
-						t.Errorf("test %d: expected panic but got none", i)
+						t.Fatal("expected panic but got none")
 					}
 				}()
 			}
@@ -535,49 +690,55 @@ func TestParsedFlags_MustHumanReadableBytesString(t *testing.T) {
 			if !tc.expectPanic {
 				defer func() {
 					if r := recover(); r != nil {
-						t.Errorf("test %d: expected no panic but got: %v", i, r)
+						t.Fatalf("expected no panic but got: %v", r)
 					}
 				}()
 			}
 
-			parsedFlags.MustHumanReadableBytesString(tc.name)
-		}()
+			parsedFlags.MustHumanReadableBytes(tc.name)
+		})
 	}
 }
 
-func TestParsedFlags_MustDeprecatedHumanReadableBytesString(t *testing.T) {
-	for i, tc := range []struct {
+func TestParsedFlags_MustDeprecatedHumanReadableBytes(t *testing.T) {
+	for _, tc := range []struct {
+		scenario    string
 		rawFlags    []string
-		expectValue string
+		expectValue int64
 	}{
 		{
+			scenario:    "deprecated flag value",
 			rawFlags:    []string{"--foo=1MB"},
-			expectValue: "1MB",
+			expectValue: 1000000,
 		},
 		{
+			scenario:    "non-deprecated flag value",
 			rawFlags:    []string{"--bar=2MB"},
-			expectValue: "2MB",
+			expectValue: 2000000,
 		},
 		{
+			scenario:    "deprecated flag value > non-deprecated flag value",
 			rawFlags:    []string{"--foo=1MB", "--bar=2MB"},
-			expectValue: "1MB",
+			expectValue: 1000000,
 		},
 	} {
-		fs := flag.NewFlagSet("tests", flag.ContinueOnError)
-		fs.String("foo", "", "")
-		fs.String("bar", "", "")
+		t.Run(tc.scenario, func(t *testing.T) {
+			fs := flag.NewFlagSet("tests", flag.ContinueOnError)
+			fs.String("foo", "", "")
+			fs.String("bar", "", "")
 
-		parsedFlags := ParsedFlags{FlagSet: fs}
+			parsedFlags := ParsedFlags{FlagSet: fs}
 
-		err := parsedFlags.Parse(tc.rawFlags)
-		if err != nil {
-			t.Fatalf("test %d: expected no error but got: %v", i, err)
-		}
+			err := parsedFlags.Parse(tc.rawFlags)
+			if err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
 
-		actual := parsedFlags.MustDeprecatedHumanReadableBytesString("foo", "bar")
-		if actual != tc.expectValue {
-			t.Errorf("test %d: expected '%s' but got '%s'", i, tc.expectValue, actual)
-		}
+			actual := parsedFlags.MustDeprecatedHumanReadableBytes("foo", "bar")
+			if actual != tc.expectValue {
+				t.Errorf("expected %d but got %d", tc.expectValue, actual)
+			}
+		})
 	}
 }
 
@@ -593,27 +754,27 @@ func TestParsedFlags_MustRegexp(t *testing.T) {
 
 	parsedFlags := ParsedFlags{FlagSet: fs}
 
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		name        string
 		expectPanic bool
 	}{
 		{
-			name: "foo",
+			scenario:    "success",
+			name:        "foo",
+			expectPanic: false,
 		},
 		{
+			scenario:    "non-existing flag",
 			name:        "bar",
 			expectPanic: true,
 		},
-		{
-			name:        "baz",
-			expectPanic: true,
-		},
 	} {
-		func() {
+		t.Run(tc.scenario, func(t *testing.T) {
 			if tc.expectPanic {
 				defer func() {
 					if r := recover(); r == nil {
-						t.Errorf("test %d: expected panic but got none", i)
+						t.Fatal("expected panic but got none")
 					}
 				}()
 			}
@@ -621,48 +782,54 @@ func TestParsedFlags_MustRegexp(t *testing.T) {
 			if !tc.expectPanic {
 				defer func() {
 					if r := recover(); r != nil {
-						t.Errorf("test %d: expected no panic but got: %v", i, r)
+						t.Fatalf("expected no panic but got: %v", r)
 					}
 				}()
 			}
 
 			parsedFlags.MustRegexp(tc.name)
-		}()
+		})
 	}
 }
 
 func TestParsedFlags_MustDeprecatedRegexp(t *testing.T) {
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		rawFlags    []string
 		expectValue *regexp.Regexp
 	}{
 		{
+			scenario:    "deprecated flag value",
 			rawFlags:    []string{"--foo=foo"},
 			expectValue: regexp.MustCompile("foo"),
 		},
 		{
+			scenario:    "non-deprecated flag value",
 			rawFlags:    []string{"--bar=bar"},
 			expectValue: regexp.MustCompile("bar"),
 		},
 		{
+			scenario:    "deprecated flag value > non-deprecated flag value",
 			rawFlags:    []string{"--foo=foo", "--bar=bar"},
 			expectValue: regexp.MustCompile("foo"),
 		},
 	} {
-		fs := flag.NewFlagSet("tests", flag.ContinueOnError)
-		fs.String("foo", "", "")
-		fs.String("bar", "", "")
+		t.Run(tc.scenario, func(t *testing.T) {
+			fs := flag.NewFlagSet("tests", flag.ContinueOnError)
+			fs.String("foo", "", "")
+			fs.String("bar", "", "")
 
-		parsedFlags := ParsedFlags{FlagSet: fs}
+			parsedFlags := ParsedFlags{FlagSet: fs}
 
-		err := parsedFlags.Parse(tc.rawFlags)
-		if err != nil {
-			t.Fatalf("test %d: expected no error but got: %v", i, err)
-		}
+			err := parsedFlags.Parse(tc.rawFlags)
+			if err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
 
-		actual := parsedFlags.MustDeprecatedRegexp("foo", "bar")
-		if actual.String() != tc.expectValue.String() {
-			t.Errorf("test %d: expected '%s' but got '%s'", i, tc.expectValue.String(), actual.String())
-		}
+			actual := parsedFlags.MustDeprecatedRegexp("foo", "bar")
+			if actual.String() != tc.expectValue.String() {
+				t.Errorf("expected '%s' but got '%s'", tc.expectValue.String(), actual.String())
+			}
+		})
 	}
 }

pkg/gotenberg/fs.go

@@ -7,27 +7,85 @@ import (
 	"github.com/google/uuid"
 )
 
-// TmpPath returns the default directory to use for temporary files and
-// directories. Most if not all files and directories created by the
-// application and its dependencies must be based on this default directory.
-func TmpPath() string {
-	return os.TempDir()
+// MkdirAll defines the method signature for create a directory. Implement this
+// interface if you don't want to rely on [os.MkdirAll], notably for testing
+// purpose.
+type MkdirAll interface {
+	// MkdirAll uses the same signature as [os.MkdirAll].
+	MkdirAll(path string, perm os.FileMode) error
 }
 
-// NewDirPath returns a random absolute path based on the temporary path.
-func NewDirPath() string {
-	return fmt.Sprintf("%s/%s", TmpPath(), uuid.New())
+// OsMkdirAll implements the [MkdirAll] interface with [os.MkdirAll].
+type OsMkdirAll struct{}
+
+// MkdirAll is a wrapper around [os.MkdirAll].
+func (o *OsMkdirAll) MkdirAll(path string, perm os.FileMode) error { return os.MkdirAll(path, perm) }
+
+// PathRename defines the method signature for renaming files. Implement this
+// interface if you don't want to rely on [os.Rename], notably for testing
+// purposes.
+type PathRename interface {
+	// Rename uses the same signature as [os.Rename].
+	Rename(oldpath, newpath string) error
 }
 
-// MkdirAll creates a random directory based on the temporary path and
-// returns its absolute path.
-func MkdirAll() (string, error) {
-	path := NewDirPath()
+// OsPathRename implements the [PathRename] interface with [os.Rename].
+type OsPathRename struct{}
 
-	err := os.MkdirAll(path, 0755)
+// Rename is a wrapper around [os.Rename].
+func (o *OsPathRename) Rename(oldpath, newpath string) error {
+	return os.Rename(oldpath, newpath)
+}
+
+// FileSystem provides utilities for managing temporary directories. It creates
+// unique directory names based on UUIDs to ensure isolation of temporary files
+// for different modules.
+type FileSystem struct {
+	workingDir string
+	mkdirAll   MkdirAll
+}
+
+// NewFileSystem initializes a new [FileSystem] instance with a unique working
+// directory.
+func NewFileSystem(mkdirAll MkdirAll) *FileSystem {
+	return &FileSystem{
+		workingDir: uuid.NewString(),
+		mkdirAll:   mkdirAll,
+	}
+}
+
+// WorkingDir returns the unique name of the working directory.
+func (fs *FileSystem) WorkingDir() string {
+	return fs.workingDir
+}
+
+// WorkingDirPath constructs and returns the full path to the working directory
+// inside the system's temporary directory.
+func (fs *FileSystem) WorkingDirPath() string {
+	return fmt.Sprintf("%s/%s", os.TempDir(), fs.workingDir)
+}
+
+// NewDirPath generates a new unique path for a directory inside the working
+// directory.
+func (fs *FileSystem) NewDirPath() string {
+	return fmt.Sprintf("%s/%s", fs.WorkingDirPath(), uuid.NewString())
+}
+
+// MkdirAll creates a new unique directory inside the working directory and
+// returns its path. If the directory creation fails, an error is returned.
+func (fs *FileSystem) MkdirAll() (string, error) {
+	path := fs.NewDirPath()
+
+	err := fs.mkdirAll.MkdirAll(path, 0o755)
 	if err != nil {
 		return "", fmt.Errorf("create directory %s: %w", path, err)
 	}
 
 	return path, nil
 }
+
+// Interface guards.
+var (
+	_ MkdirAll   = (*OsMkdirAll)(nil)
+	_ PathRename = (*OsPathRename)(nil)
+)

pkg/gotenberg/fs_test.go

@@ -1,59 +0,0 @@
-package gotenberg
-
-import (
-	"os"
-	"strings"
-	"testing"
-)
-
-func TestTmpPath(t *testing.T) {
-	osTempDir := os.TempDir()
-	tmpPath := TmpPath()
-
-	if tmpPath != osTempDir {
-		t.Errorf("expected path '%s' but got '%s'", osTempDir, tmpPath)
-	}
-}
-
-func TestNewDirPath(t *testing.T) {
-	newDirPath := NewDirPath()
-	tmpPath := TmpPath()
-
-	if !strings.HasPrefix(newDirPath, tmpPath) {
-		t.Fatalf("expected path '%s' to start with '%s'", newDirPath, tmpPath)
-	}
-
-	newDirPaths := make([]string, 1000)
-	for i := range newDirPaths {
-		newDirPaths[i] = NewDirPath()
-	}
-
-	for i, newDirPath := range newDirPaths {
-		for j, comparison := range newDirPaths {
-			if i == j {
-				continue
-			}
-
-			if newDirPath == comparison {
-				t.Fatalf("expected path '%s' (index %d) to be unique, but found an identical path on index %d", newDirPath, i, j)
-			}
-		}
-	}
-}
-
-func TestMkdirAll(t *testing.T) {
-	path, err := MkdirAll()
-	if err != nil {
-		t.Fatalf("expected no error but got: %v", err)
-	}
-
-	tmpPath := TmpPath()
-	if !strings.HasPrefix(path, tmpPath) {
-		t.Fatalf("expected path '%s' to start with '%s'", path, tmpPath)
-	}
-
-	_, err = os.Stat(path)
-	if os.IsNotExist(err) {
-		t.Errorf("expected path '%s' to exist but got: %v", path, err)
-	}
-}

pkg/gotenberg/gc.go

@@ -0,0 +1,54 @@
+package gotenberg
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"go.uber.org/zap"
+)
+
+// GarbageCollect scans the root path and deletes files or directories with
+// names containing specific substrings and before a given expiration time.
+func GarbageCollect(logger *zap.Logger, rootPath string, includeSubstr []string, expirationTime time.Time) error {
+	logger = logger.Named("gc")
+
+	// To make sure that the next Walk method stays on
+	// the root level of the considered path, we have to
+	// return a filepath.SkipDir error if the current path
+	// is a directory.
+	skipDirOrNil := func(info os.FileInfo) error {
+		if info.IsDir() {
+			return filepath.SkipDir
+		}
+
+		return nil
+	}
+
+	return filepath.Walk(rootPath, func(path string, info os.FileInfo, pathErr error) error {
+		if pathErr != nil {
+			return pathErr
+		}
+
+		if path == rootPath {
+			return nil
+		}
+
+		for _, substr := range includeSubstr {
+			if (strings.Contains(info.Name(), substr) || path == substr) && info.ModTime().Before(expirationTime) {
+				err := os.RemoveAll(path)
+				if err != nil {
+					return fmt.Errorf("garbage collect '%s': %w", path, err)
+				}
+
+				logger.Debug(fmt.Sprintf("'%s' removed", path))
+
+				return skipDirOrNil(info)
+			}
+		}
+
+		return skipDirOrNil(info)
+	})
+}

pkg/gotenberg/gc_test.go

@@ -0,0 +1,100 @@
+package gotenberg
+
+import (
+	"fmt"
+	"os"
+	"path"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"go.uber.org/zap"
+)
+
+func TestGarbageCollect(t *testing.T) {
+	for _, tc := range []struct {
+		scenario        string
+		rootPath        string
+		includeSubstr   []string
+		expectError     bool
+		expectNotExists []string
+		expectExists    []string
+	}{
+		{
+			scenario:    "root path does not exist",
+			rootPath:    uuid.NewString(),
+			expectError: true,
+		},
+		{
+			scenario: "remove include substrings",
+			rootPath: func() string {
+				p := fmt.Sprintf("%s/a_directory", os.TempDir())
+
+				err := os.MkdirAll(p, 0o755)
+				if err != nil {
+					t.Fatalf("expected no error but got: %v", err)
+				}
+
+				err = os.WriteFile(fmt.Sprintf("%s/a_foo_file", p), []byte{1}, 0o755)
+				if err != nil {
+					t.Fatalf("expected no error but got: %v", err)
+				}
+
+				err = os.WriteFile(fmt.Sprintf("%s/a_bar_file", p), []byte{1}, 0o755)
+				if err != nil {
+					t.Fatalf("expected no error but got: %v", err)
+				}
+
+				err = os.WriteFile(fmt.Sprintf("%s/a_baz_file", p), []byte{1}, 0o755)
+				if err != nil {
+					t.Fatalf("expected no error but got: %v", err)
+				}
+
+				return p
+			}(),
+			includeSubstr:   []string{"foo", path.Join(os.TempDir(), "/a_directory/a_bar_file")},
+			expectError:     false,
+			expectExists:    []string{"a_baz_file"},
+			expectNotExists: []string{"a_foo_file", "a_bar_file"},
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			defer func() {
+				err := os.RemoveAll(tc.rootPath)
+				if err != nil {
+					t.Fatalf("expected no error while cleaning up but got: %v", err)
+				}
+			}()
+
+			err := GarbageCollect(zap.NewNop(), tc.rootPath, tc.includeSubstr, time.Now())
+
+			if !tc.expectError && err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
+
+			if tc.expectError && err == nil {
+				t.Fatal("expected error but got none")
+			}
+
+			if tc.expectError && err != nil {
+				return
+			}
+
+			for _, name := range tc.expectNotExists {
+				p := fmt.Sprintf("%s/%s", tc.rootPath, name)
+				_, err = os.Stat(p)
+				if !os.IsNotExist(err) {
+					t.Errorf("expected '%s' not to exist but it does: %v", p, err)
+				}
+			}
+
+			for _, name := range tc.expectExists {
+				p := fmt.Sprintf("%s/%s", tc.rootPath, name)
+				_, err = os.Stat(p)
+				if os.IsNotExist(err) {
+					t.Errorf("expected '%s' to exist but it does not: %v", p, err)
+				}
+			}
+		})
+	}
+}

pkg/gotenberg/logging.go

@@ -1,9 +1,14 @@
 package gotenberg
 
-import "go.uber.org/zap"
+import (
+	"fmt"
 
-// LoggerProvider is a module interface which exposes a method for creating a
-// zap.Logger for other modules.
+	"github.com/hashicorp/go-retryablehttp"
+	"go.uber.org/zap"
+)
+
+// LoggerProvider is an interface for a module that supplies a method for
+// creating a [zap.Logger] instance for use by other modules.
 //
 //	func (m *YourModule) Provision(ctx *gotenberg.Context) error {
 //		provider, _ := ctx.Module(new(gotenberg.LoggerProvider))
@@ -12,3 +17,41 @@ import "go.uber.org/zap"
 type LoggerProvider interface {
 	Logger(mod Module) (*zap.Logger, error)
 }
+
+// LeveledLogger is a wrapper around a [zap.Logger] so that it may be used by a
+// [retryablehttp.Client].
+type LeveledLogger struct {
+	logger *zap.Logger
+}
+
+// NewLeveledLogger instantiates a [LeveledLogger].
+func NewLeveledLogger(logger *zap.Logger) *LeveledLogger {
+	return &LeveledLogger{
+		logger: logger,
+	}
+}
+
+// Error logs a message at the error level using the wrapped zap.Logger.
+func (leveled LeveledLogger) Error(msg string, keysAndValues ...interface{}) {
+	leveled.logger.Error(fmt.Sprintf("%s: %+v", msg, keysAndValues))
+}
+
+// Warn logs a message at the warning level using the wrapped zap.Logger.
+func (leveled LeveledLogger) Warn(msg string, keysAndValues ...interface{}) {
+	leveled.logger.Warn(fmt.Sprintf("%s: %+v", msg, keysAndValues))
+}
+
+// Info logs a message at the info level using the wrapped zap.Logger.
+func (leveled LeveledLogger) Info(msg string, keysAndValues ...interface{}) {
+	leveled.logger.Info(fmt.Sprintf("%s: %+v", msg, keysAndValues))
+}
+
+// Debug logs a message at the debug level using the wrapped zap.Logger.
+func (leveled LeveledLogger) Debug(msg string, keysAndValues ...interface{}) {
+	leveled.logger.Debug(fmt.Sprintf("%s: %+v", msg, keysAndValues))
+}
+
+// Interface guards.
+var (
+	_ retryablehttp.LeveledLogger = (*LeveledLogger)(nil)
+)

pkg/gotenberg/metrics.go

@@ -15,7 +15,7 @@ type Metric struct {
 	Read func() float64
 }
 
-// MetricsProvider is a module interface which provides a list of Metric.
+// MetricsProvider is a module interface which provides a list of [Metric].
 //
 //	func (m *YourModule) Provision(ctx *gotenberg.Context) error {
 //		provider, _ := ctx.Module(new(gotenberg.MetricsProvider))

pkg/gotenberg/mocks.go

@@ -2,65 +2,190 @@ package gotenberg
 
 import (
 	"context"
+	"os"
 
 	"go.uber.org/zap"
 )
 
-// ModuleMock is a mock for the Module interface.
+// ModuleMock is a mock for the [Module] interface.
 type ModuleMock struct {
 	DescriptorMock func() ModuleDescriptor
 }
 
-func (mod ModuleMock) Descriptor() ModuleDescriptor {
+func (mod *ModuleMock) Descriptor() ModuleDescriptor {
 	return mod.DescriptorMock()
 }
 
-// ValidatorMock is a mock for the Validator interface.
+// ProvisionerMock is a mock for the [Provisioner] interface.
+type ProvisionerMock struct {
+	ProvisionMock func(*Context) error
+}
+
+func (mod *ProvisionerMock) Provision(ctx *Context) error {
+	return mod.ProvisionMock(ctx)
+}
+
+// ValidatorMock is a mock for the [Validator] interface.
 type ValidatorMock struct {
 	ValidateMock func() error
 }
 
-func (mod ValidatorMock) Validate() error {
+func (mod *ValidatorMock) Validate() error {
 	return mod.ValidateMock()
 }
 
-// PDFEngineMock is a mock for the PDFEngine interface.
-type PDFEngineMock struct {
-	MergeMock   func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error
-	ConvertMock func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error
+type DebuggableMock struct {
+	DebugMock func() map[string]interface{}
 }
 
-func (engine PDFEngineMock) Merge(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+func (mod *DebuggableMock) Debug() map[string]interface{} {
+	return mod.DebugMock()
+}
+
+// PdfEngineMock is a mock for the [PdfEngine] interface.
+//
+//nolint:dupl
+type PdfEngineMock struct {
+	MergeMock         func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error
+	SplitMock         func(ctx context.Context, logger *zap.Logger, mode SplitMode, inputPath, outputDirPath string) ([]string, error)
+	FlattenMock       func(ctx context.Context, logger *zap.Logger, inputPath string) error
+	ConvertMock       func(ctx context.Context, logger *zap.Logger, formats PdfFormats, inputPath, outputPath string) error
+	ReadMetadataMock  func(ctx context.Context, logger *zap.Logger, inputPath string) (map[string]interface{}, error)
+	WriteMetadataMock func(ctx context.Context, logger *zap.Logger, metadata map[string]interface{}, inputPath string) error
+}
+
+func (engine *PdfEngineMock) Merge(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
 	return engine.MergeMock(ctx, logger, inputPaths, outputPath)
 }
 
-func (engine PDFEngineMock) Convert(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
-	return engine.ConvertMock(ctx, logger, format, inputPath, outputPath)
+func (engine *PdfEngineMock) Split(ctx context.Context, logger *zap.Logger, mode SplitMode, inputPath, outputDirPath string) ([]string, error) {
+	return engine.SplitMock(ctx, logger, mode, inputPath, outputDirPath)
 }
 
-// PDFEngineProviderMock is a mock for the PDFEngineProvider interface.
-type PDFEngineProviderMock struct {
-	PDFEngineMock func() (PDFEngine, error)
+func (engine *PdfEngineMock) Flatten(ctx context.Context, logger *zap.Logger, inputPath string) error {
+	return engine.FlattenMock(ctx, logger, inputPath)
 }
 
-func (provider PDFEngineProviderMock) PDFEngine() (PDFEngine, error) {
-	return provider.PDFEngineMock()
+func (engine *PdfEngineMock) Convert(ctx context.Context, logger *zap.Logger, formats PdfFormats, inputPath, outputPath string) error {
+	return engine.ConvertMock(ctx, logger, formats, inputPath, outputPath)
 }
 
-// LoggerProviderMock is a mock for the LoggerProvider interface.
+func (engine *PdfEngineMock) ReadMetadata(ctx context.Context, logger *zap.Logger, inputPath string) (map[string]interface{}, error) {
+	return engine.ReadMetadataMock(ctx, logger, inputPath)
+}
+
+func (engine *PdfEngineMock) WriteMetadata(ctx context.Context, logger *zap.Logger, metadata map[string]interface{}, inputPath string) error {
+	return engine.WriteMetadataMock(ctx, logger, metadata, inputPath)
+}
+
+// PdfEngineProviderMock is a mock for the [PdfEngineProvider] interface.
+type PdfEngineProviderMock struct {
+	PdfEngineMock func() (PdfEngine, error)
+}
+
+func (provider *PdfEngineProviderMock) PdfEngine() (PdfEngine, error) {
+	return provider.PdfEngineMock()
+}
+
+// ProcessMock is a mock for the [Process] interface.
+type ProcessMock struct {
+	StartMock   func(logger *zap.Logger) error
+	StopMock    func(logger *zap.Logger) error
+	HealthyMock func(logger *zap.Logger) bool
+}
+
+func (p *ProcessMock) Start(logger *zap.Logger) error {
+	return p.StartMock(logger)
+}
+
+func (p *ProcessMock) Stop(logger *zap.Logger) error {
+	return p.StopMock(logger)
+}
+
+func (p *ProcessMock) Healthy(logger *zap.Logger) bool {
+	return p.HealthyMock(logger)
+}
+
+// ProcessSupervisorMock is a mock for the [ProcessSupervisor] interface.
+type ProcessSupervisorMock struct {
+	LaunchMock        func() error
+	ShutdownMock      func() error
+	HealthyMock       func() bool
+	RunMock           func(ctx context.Context, logger *zap.Logger, task func() error) error
+	ReqQueueSizeMock  func() int64
+	RestartsCountMock func() int64
+}
+
+func (s *ProcessSupervisorMock) Launch() error {
+	return s.LaunchMock()
+}
+
+func (s *ProcessSupervisorMock) Shutdown() error {
+	return s.ShutdownMock()
+}
+
+func (s *ProcessSupervisorMock) Healthy() bool {
+	return s.HealthyMock()
+}
+
+func (s *ProcessSupervisorMock) Run(ctx context.Context, logger *zap.Logger, task func() error) error {
+	return s.RunMock(ctx, logger, task)
+}
+
+func (s *ProcessSupervisorMock) ReqQueueSize() int64 {
+	return s.ReqQueueSizeMock()
+}
+
+func (s *ProcessSupervisorMock) RestartsCount() int64 {
+	return s.RestartsCountMock()
+}
+
+// LoggerProviderMock is a mock for the [LoggerProvider] interface.
 type LoggerProviderMock struct {
 	LoggerMock func(mod Module) (*zap.Logger, error)
 }
 
-func (provider LoggerProviderMock) Logger(mod Module) (*zap.Logger, error) {
+func (provider *LoggerProviderMock) Logger(mod Module) (*zap.Logger, error) {
 	return provider.LoggerMock(mod)
 }
 
+// MetricsProviderMock is a mock for the [MetricsProvider] interface.
+type MetricsProviderMock struct {
+	MetricsMock func() ([]Metric, error)
+}
+
+func (provider *MetricsProviderMock) Metrics() ([]Metric, error) {
+	return provider.MetricsMock()
+}
+
+// MkdirAllMock is a mock for the [MkdirAll] interface.
+type MkdirAllMock struct {
+	MkdirAllMock func(path string, perm os.FileMode) error
+}
+
+func (mkdirAll *MkdirAllMock) MkdirAll(path string, perm os.FileMode) error {
+	return mkdirAll.MkdirAllMock(path, perm)
+}
+
+// PathRenameMock is a mock for the [PathRename] interface.
+type PathRenameMock struct {
+	RenameMock func(oldpath, newpath string) error
+}
+
+func (rename *PathRenameMock) Rename(oldpath, newpath string) error {
+	return rename.RenameMock(oldpath, newpath)
+}
+
 // Interface guards.
 var (
 	_ Module            = (*ModuleMock)(nil)
 	_ Validator         = (*ValidatorMock)(nil)
-	_ PDFEngine         = (*PDFEngineMock)(nil)
-	_ PDFEngineProvider = (*PDFEngineProviderMock)(nil)
+	_ PdfEngine         = (*PdfEngineMock)(nil)
+	_ PdfEngineProvider = (*PdfEngineProviderMock)(nil)
+	_ Process           = (*ProcessMock)(nil)
+	_ ProcessSupervisor = (*ProcessSupervisorMock)(nil)
 	_ LoggerProvider    = (*LoggerProviderMock)(nil)
+	_ MetricsProvider   = (*MetricsProviderMock)(nil)
+	_ MkdirAll          = (*MkdirAllMock)(nil)
+	_ PathRename        = (*PathRenameMock)(nil)
 )

pkg/gotenberg/mocks_test.go

@@ -1,82 +0,0 @@
-package gotenberg
-
-import (
-	"context"
-	"testing"
-
-	"go.uber.org/zap"
-)
-
-func TestModuleMock(t *testing.T) {
-	mock := ModuleMock{
-		DescriptorMock: func() ModuleDescriptor {
-			return ModuleDescriptor{ID: "foo", New: func() Module {
-				return nil
-			}}
-		},
-	}
-
-	if mock.Descriptor().ID != "foo" {
-		t.Errorf("expected ID '%s' from mock.Descriptor(), but got '%s'", "foo", mock.Descriptor().ID)
-	}
-}
-
-func TestValidatorMock(t *testing.T) {
-	mock := ValidatorMock{
-		ValidateMock: func() error {
-			return nil
-		},
-	}
-
-	err := mock.Validate()
-	if err != nil {
-		t.Errorf("expected no error from mock.Validate(), but got: %v", err)
-	}
-}
-
-func TestPDFEngineMock(t *testing.T) {
-	mock := PDFEngineMock{
-		MergeMock: func(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
-			return nil
-		},
-		ConvertMock: func(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
-			return nil
-		},
-	}
-
-	err := mock.Merge(context.Background(), zap.NewNop(), nil, "")
-	if err != nil {
-		t.Errorf("expected no error from mock.Merge(), but got: %v", err)
-	}
-
-	err = mock.Convert(context.Background(), zap.NewNop(), "", "", "")
-	if err != nil {
-		t.Errorf("expected no error from mock.Convert(), but got: %v", err)
-	}
-}
-
-func TestPDFEngineProvider(t *testing.T) {
-	mock := PDFEngineProviderMock{
-		PDFEngineMock: func() (PDFEngine, error) {
-			return PDFEngineMock{}, nil
-		},
-	}
-
-	_, err := mock.PDFEngine()
-	if err != nil {
-		t.Errorf("expected no error from mock.PDFEngine(), but got: %v", err)
-	}
-}
-
-func TestLoggerProviderMock(t *testing.T) {
-	mock := LoggerProviderMock{
-		LoggerMock: func(mod Module) (*zap.Logger, error) {
-			return nil, nil
-		},
-	}
-
-	_, err := mock.Logger(ModuleMock{})
-	if err != nil {
-		t.Errorf("expected no error from mock.Logger(), but got: %v", err)
-	}
-}

pkg/gotenberg/modules.go

@@ -75,6 +75,12 @@ type SystemLogger interface {
 	SystemMessages() []string
 }
 
+// Debuggable is a module interface for modules which want to provide
+// additional debug data.
+type Debuggable interface {
+	Debug() map[string]interface{}
+}
+
 // MustRegisterModule registers a module.
 //
 // To register a module, create an init() method in the module main go file:
@@ -83,7 +89,7 @@ type SystemLogger interface {
 //		gotenberg.MustRegisterModule(YourModule{})
 //	}
 //
-// Then, in the main command (github.com/gotenberg/gotenberg/v7/cmd/gotenberg),
+// Then, in the main command (github.com/gotenberg/gotenberg/v8/cmd/gotenberg),
 // import the module:
 //
 //	imports (

pkg/gotenberg/modules_test.go

@@ -5,32 +5,6 @@ import (
 	"testing"
 )
 
-type ProtoModule struct {
-	descriptor func() ModuleDescriptor
-}
-
-func (mod ProtoModule) Descriptor() ModuleDescriptor {
-	return mod.descriptor()
-}
-
-type ProtoProvisioner struct {
-	ProtoModule
-	provision func(ctx *Context) error
-}
-
-func (mod ProtoProvisioner) Provision(ctx *Context) error {
-	return mod.provision(ctx)
-}
-
-type ProtoValidator struct {
-	ProtoModule
-	validate func() error
-}
-
-func (mod ProtoValidator) Validate() error {
-	return mod.validate()
-}
-
 func TestMustRegisterModule(t *testing.T) {
 	descriptorsMu.RLock()
 	descriptors = map[string]ModuleDescriptor{
@@ -38,44 +12,51 @@ func TestMustRegisterModule(t *testing.T) {
 	}
 	descriptorsMu.RUnlock()
 
-	for i, tc := range []struct {
+	for _, tc := range []struct {
+		scenario    string
 		ID          string
 		New         func() Module
 		expectPanic bool
 	}{
 		{
+			scenario:    "no ID",
 			ID:          "",
-			New:         func() Module { return new(ProtoModule) },
+			New:         func() Module { return new(ModuleMock) },
 			expectPanic: true,
 		},
 		{
+			scenario:    "nil New method",
 			ID:          "b",
 			New:         nil,
 			expectPanic: true,
 		},
 		{
+			scenario:    "nil module",
 			ID:          "b",
 			New:         func() Module { return nil },
 			expectPanic: true,
 		},
 		{
+			scenario:    "existing module",
 			ID:          "a",
-			New:         func() Module { return new(ProtoModule) },
+			New:         func() Module { return new(ModuleMock) },
 			expectPanic: true,
 		},
 		{
-			ID:  "b",
-			New: func() Module { return new(ProtoModule) },
+			scenario:    "success",
+			ID:          "b",
+			New:         func() Module { return new(ModuleMock) },
+			expectPanic: false,
 		},
 	} {
-		func() {
-			mod := struct{ ProtoModule }{}
-			mod.descriptor = func() ModuleDescriptor { return ModuleDescriptor{ID: tc.ID, New: tc.New} }
+		t.Run(tc.scenario, func(t *testing.T) {
+			mod := &struct{ ModuleMock }{}
+			mod.DescriptorMock = func() ModuleDescriptor { return ModuleDescriptor{ID: tc.ID, New: tc.New} }
 
 			if tc.expectPanic {
 				defer func() {
 					if r := recover(); r == nil {
-						t.Errorf("test %d: expected panic but got none", i)
+						t.Error("expected panic but got none")
 					}
 				}()
 			}
@@ -83,13 +64,13 @@ func TestMustRegisterModule(t *testing.T) {
 			if !tc.expectPanic {
 				defer func() {
 					if r := recover(); r != nil {
-						t.Errorf("test %d: expected no panic but got: %v", i, r)
+						t.Errorf("expected no panic but got: %v", r)
 					}
 				}()
 			}
 
 			MustRegisterModule(mod)
-		}()
+		})
 	}
 
 	descriptorsMu.RLock()
@@ -124,12 +105,3 @@ func TestGetModuleDescriptors(t *testing.T) {
 	descriptors = make(map[string]ModuleDescriptor)
 	descriptorsMu.RUnlock()
 }
-
-// Interface guards.
-var (
-	_ Module      = (*ProtoModule)(nil)
-	_ Provisioner = (*ProtoProvisioner)(nil)
-	_ Module      = (*ProtoProvisioner)(nil)
-	_ Validator   = (*ProtoValidator)(nil)
-	_ Module      = (*ProtoValidator)(nil)
-)

pkg/gotenberg/pdfengine.go

@@ -8,45 +8,123 @@ import (
 )
 
 var (
-	// ErrPDFEngineMethodNotAvailable happens if a PDFEngine method is not
-	// available in the implementation.
-	ErrPDFEngineMethodNotAvailable = errors.New("method not available")
+	// ErrPdfEngineMethodNotSupported is returned when a specific method of the
+	// PdfEngine interface is not supported by its current implementation.
+	ErrPdfEngineMethodNotSupported = errors.New("method not supported")
 
-	// ErrPDFFormatNotAvailable happens if a PDFEngine Convert's method does
-	// not handle a specific format.
-	ErrPDFFormatNotAvailable = errors.New("PDF format not available")
+	// ErrPdfSplitModeNotSupported is returned when the Split method of the
+	// PdfEngine interface does not support a requested PDF split mode.
+	ErrPdfSplitModeNotSupported = errors.New("split mode not supported")
+
+	// ErrPdfFormatNotSupported is returned when the Convert method of the
+	// PdfEngine interface does not support a requested PDF format conversion.
+	ErrPdfFormatNotSupported = errors.New("PDF format not supported")
+
+	// ErrPdfEngineMetadataValueNotSupported is returned when a metadata value
+	// is not supported.
+	ErrPdfEngineMetadataValueNotSupported = errors.New("metadata value not supported")
 )
 
 const (
-	FormatPDFA1a string = "PDF/A-1a"
-	FormatPDFA1b string = "PDF/A-1b"
-	FormatPDFA2a string = "PDF/A-2a"
-	FormatPDFA2b string = "PDF/A-2b"
-	FormatPDFA2u string = "PDF/A-2u"
-	FormatPDFA3a string = "PDF/A-3a"
-	FormatPDFA3b string = "PDF/A-3b"
-	FormatPDFA3u string = "PDF/A-3u"
+	// SplitModeIntervals represents a mode where a PDF is split at specific
+	// intervals.
+	SplitModeIntervals string = "intervals"
+
+	// SplitModePages represents a mode where a PDF is split at specific page
+	// ranges.
+	SplitModePages string = "pages"
 )
 
-// PDFEngine is a module interface which exposes methods for manipulating one
-// or more PDFs. Implementations may abstract powerful tools like PDFtk, or
-// fulfill those methods contracts in Golang directly.
-type PDFEngine interface {
-	// Merge merges the given PDFs into a unique PDF. The pages' order reflects
-	// order of the given files.
+// SplitMode gathers the data required to split a PDF into multiple parts.
+type SplitMode struct {
+	// Mode is either "intervals" or "pages".
+	Mode string
+
+	// Span is either the intervals or the page ranges to extract, depending on
+	// the selected mode.
+	Span string
+
+	// Unify specifies whether to put extracted pages into a single file or as
+	// many files as there are page ranges. Only works with "pages" mode.
+	Unify bool
+}
+
+const (
+	// PdfA1a represents the PDF/A-1a format.
+	PdfA1a string = "PDF/A-1a"
+
+	// PdfA1b represents the PDF/A-1b format.
+	PdfA1b string = "PDF/A-1b"
+
+	// PdfA2a represents the PDF/A-2a format.
+	PdfA2a string = "PDF/A-2a"
+
+	// PdfA2b represents the PDF/A-2b format.
+	PdfA2b string = "PDF/A-2b"
+
+	// PdfA2u represents the PDF/A-2u format.
+	PdfA2u string = "PDF/A-2u"
+
+	// PdfA3a represents the PDF/A-3a format.
+	PdfA3a string = "PDF/A-3a"
+
+	// PdfA3b represents the PDF/A-3b format.
+	PdfA3b string = "PDF/A-3b"
+
+	// PdfA3u represents the PDF/A-3u format.
+	PdfA3u string = "PDF/A-3u"
+)
+
+// PdfFormats specifies the target formats for a PDF conversion.
+type PdfFormats struct {
+	// PdfA denotes the PDF/A standard format (e.g., PDF/A-1a).
+	PdfA string
+
+	// PdfUa indicates whether the PDF should comply
+	// with the PDF/UA (Universal Accessibility) standard.
+	PdfUa bool
+}
+
+// PdfEngine provides an interface for operations on PDFs. Implementations
+// can use various tools like PDFtk, or implement functionality directly in
+// Go.
+//
+//nolint:dupl
+type PdfEngine interface {
+	// Merge combines multiple PDFs into a single PDF. The resulting page order
+	// is determined by the order of files provided in inputPaths.
 	Merge(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error
 
-	// Convert converts the given PDF to a specific PDF format.
-	Convert(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error
+	// Split splits a given PDF file.
+	Split(ctx context.Context, logger *zap.Logger, mode SplitMode, inputPath, outputDirPath string) ([]string, error)
+
+	// Flatten merges existing annotation appearances with page content,
+	// effectively deleting the original annotations. This process can flatten
+	// forms as well, as forms share a relationship with annotations. Note that
+	// this operation is irreversible.
+	Flatten(ctx context.Context, logger *zap.Logger, inputPath string) error
+
+	// Convert transforms a given PDF to the specified formats defined in
+	// PdfFormats. If no format, it does nothing.
+	Convert(ctx context.Context, logger *zap.Logger, formats PdfFormats, inputPath, outputPath string) error
+
+	// ReadMetadata extracts the metadata of a given PDF file.
+	ReadMetadata(ctx context.Context, logger *zap.Logger, inputPath string) (map[string]interface{}, error)
+
+	// WriteMetadata writes the metadata into a given PDF file.
+	WriteMetadata(ctx context.Context, logger *zap.Logger, metadata map[string]interface{}, inputPath string) error
 }
 
-// PDFEngineProvider is a module interface which exposes a method for creating a
-// PDFEngine for other modules.
+// PdfEngineProvider offers an interface to instantiate a [PdfEngine].
+// This is used to decouple the creation of a [PdfEngine] from its consumers.
+//
+// Example:
 //
 //	func (m *YourModule) Provision(ctx *gotenberg.Context) error {
-//		provider, _  := ctx.Module(new(gotenberg.PDFEngineProvider))
-//		pdfengines, _ := provider.(gotenberg.PDFEngineProvider).PDFEngine()
+//		provider, _ := ctx.Module(new(gotenberg.PdfEngineProvider))
+//		engine, _ := provider.(gotenberg.PdfEngineProvider).PdfEngine()
 //	}
-type PDFEngineProvider interface {
-	PDFEngine() (PDFEngine, error)
+type PdfEngineProvider interface {
+	// PdfEngine returns an instance of the [PdfEngine] interface for PDF operations.
+	PdfEngine() (PdfEngine, error)
 }

pkg/gotenberg/shutdown.go

@@ -0,0 +1,8 @@
+package gotenberg
+
+import "errors"
+
+// ErrCancelGracefulShutdownContext tells that a module wants to abort a
+// graceful shutdown and stops Gotenberg right away as there are no more
+// ongoing processes.
+var ErrCancelGracefulShutdownContext = errors.New("cancel graceful shutdown's context")

pkg/gotenberg/sort.go

@@ -0,0 +1,98 @@
+package gotenberg
+
+import (
+	"path/filepath"
+	"regexp"
+	"sort"
+	"strconv"
+)
+
+// AlphanumericSort implements sort.Interface and helps to sort strings
+// alphanumerically by either a numeric prefix or, if missing, a numeric
+// suffix.
+//
+// See: https://github.com/gotenberg/gotenberg/issues/805.
+type AlphanumericSort []string
+
+func (s AlphanumericSort) Len() int {
+	return len(s)
+}
+
+func (s AlphanumericSort) Swap(i, j int) {
+	s[i], s[j] = s[j], s[i]
+}
+
+func (s AlphanumericSort) Less(i, j int) bool {
+	numI, restI := extractNumber(s[i])
+	numJ, restJ := extractNumber(s[j])
+
+	// If both strings contain a number, compare them numerically.
+	if numI != -1 && numJ != -1 {
+		if numI != numJ {
+			return numI < numJ
+		}
+		// If the numbers are equal, compare the "rest" strings.
+		return restI < restJ
+	}
+
+	// If one contains a number and the other doesn't, the one with the number
+	// comes first.
+	if numI != -1 {
+		return true
+	}
+	if numJ != -1 {
+		return false
+	}
+
+	// Neither has a number; fall back to lexicographical order.
+	return s[i] < s[j]
+}
+
+// extractNumber attempts to extract a numeric portion from the filename.
+// It first checks for a numeric prefix (digits at the beginning).
+// If none is found, it next attempts to match a number immediately before the
+// extension (for filenames such as "sample1_1.pdf").
+// If that fails, it then attempts a trailing numeric pattern.
+// If no number is found, it returns -1 and the original string.
+func extractNumber(str string) (int, string) {
+	// See https://github.com/gotenberg/gotenberg/issues/1168.
+	str = filepath.Base(str)
+
+	// Check for a numeric prefix.
+	if matches := prefixRegexp.FindStringSubmatch(str); len(matches) > 2 {
+		if num, err := strconv.Atoi(matches[1]); err == nil {
+			return num, matches[2]
+		}
+	}
+
+	// Check for a number immediately before an extension.
+	if matches := extensionSuffixRegexp.FindStringSubmatch(str); len(matches) > 3 {
+		if num, err := strconv.Atoi(matches[2]); err == nil {
+			// Remove the numeric block but keep the extension.
+			return num, matches[1] + matches[3]
+		}
+	}
+
+	// Check for a trailing number (with no extension following).
+	if matches := suffixRegexp.FindStringSubmatch(str); len(matches) > 2 {
+		if num, err := strconv.Atoi(matches[2]); err == nil {
+			return num, matches[1]
+		}
+	}
+
+	// No numeric portion found.
+	return -1, str
+}
+
+// Regular expressions used by extractNumber.
+var (
+	// Matches a numeric prefix: one or more digits at the start.
+	prefixRegexp = regexp.MustCompile(`^(\d+)(.*)$`)
+	// Matches a numeric block immediately before a file extension.
+	extensionSuffixRegexp = regexp.MustCompile(`^(.*?)(\d+)(\.[^.]+)$`)
+	// Matches a trailing numeric sequence when there is no extension.
+	suffixRegexp = regexp.MustCompile(`^(.*?)(\d+)$`)
+)
+
+// Interface guard.
+var _ sort.Interface = (*AlphanumericSort)(nil)

pkg/gotenberg/sort_test.go

@@ -0,0 +1,44 @@
+package gotenberg
+
+import (
+	"reflect"
+	"sort"
+	"testing"
+)
+
+func TestAlphanumericSort(t *testing.T) {
+	for _, tc := range []struct {
+		scenario     string
+		values       []string
+		expectedSort []string
+	}{
+		{
+			scenario:     "numeric and letters",
+			values:       []string{"10qux.pdf", "2_baz.txt", "2_aza.txt", "1bar.pdf", "Afoo.txt", "Bbar.docx", "25zeta.txt", "3.pdf", "4_foo.pdf"},
+			expectedSort: []string{"1bar.pdf", "2_aza.txt", "2_baz.txt", "3.pdf", "4_foo.pdf", "10qux.pdf", "25zeta.txt", "Afoo.txt", "Bbar.docx"},
+		},
+		{
+			scenario:     "numeric suffixes with extensions",
+			values:       []string{"sample1_10.pdf", "sample1_11.pdf", "sample1_4.pdf", "sample1_3.pdf", "sample1_1.pdf", "sample1_2.pdf"},
+			expectedSort: []string{"sample1_1.pdf", "sample1_2.pdf", "sample1_3.pdf", "sample1_4.pdf", "sample1_10.pdf", "sample1_11.pdf"},
+		},
+		{
+			scenario:     "numeric suffixes",
+			values:       []string{"sample1_10", "sample1_11", "sample1_4", "sample1_3", "sample1_1", "sample1_2"},
+			expectedSort: []string{"sample1_1", "sample1_2", "sample1_3", "sample1_4", "sample1_10", "sample1_11"},
+		},
+		{
+			scenario:     "hrtime (PHP library)",
+			values:       []string{"245654773395259", "245654773395039", "245654773395149", "245654773394919", "245654773394369"},
+			expectedSort: []string{"245654773394369", "245654773394919", "245654773395039", "245654773395149", "245654773395259"},
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			sort.Sort(AlphanumericSort(tc.values))
+
+			if !reflect.DeepEqual(tc.values, tc.expectedSort) {
+				t.Fatalf("expected %+v but got: %+v", tc.expectedSort, tc.values)
+			}
+		})
+	}
+}

pkg/gotenberg/supervisor.go

@@ -0,0 +1,298 @@
+package gotenberg
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"sync/atomic"
+
+	"go.uber.org/zap"
+)
+
+// ErrProcessAlreadyRestarting happens if the [ProcessSupervisor] is trying
+// to restart an already restarting [Process].
+var ErrProcessAlreadyRestarting = errors.New("process already restarting")
+
+// ErrMaximumQueueSizeExceeded happens if Run() is called but the maximum queue
+// size is already used.
+var ErrMaximumQueueSizeExceeded = errors.New("maximum queue size exceeded")
+
+// Process is an interface that represents an abstract process
+// and provides methods for starting, stopping, and checking the health of the
+// process.
+//
+// Implementations of this interface should handle the actual logic for
+// starting, stopping, and ensuring the process's health.
+type Process interface {
+	// Start initiates the process and returns an error if the process cannot
+	// be started.
+	Start(logger *zap.Logger) error
+
+	// Stop terminates the process and returns an error if the process cannot
+	// be stopped.
+	Stop(logger *zap.Logger) error
+
+	// Healthy checks the health of the process. It returns true if the process
+	// is healthy; otherwise, it returns false.
+	Healthy(logger *zap.Logger) bool
+}
+
+// ProcessSupervisor provides methods to manage a [Process], including
+// starting, stopping, and ensuring its health.
+//
+// Additionally, it allows for the execution of tasks while managing the
+// process's state and provides functionality for limiting the number of
+// requests that can be handled by the process, as well as managing a request
+// queue.
+type ProcessSupervisor interface {
+	// Launch starts the managed [Process].
+	Launch() error
+
+	// Shutdown stops the managed [Process].
+	Shutdown() error
+
+	// Healthy checks and returns the health status of the managed [Process].
+	//
+	// If the process has not been started or is restarting, it is considered
+	// healthy and true is returned. Otherwise, it returns the health status of
+	// the actual process.
+	Healthy() bool
+
+	// Run executes a provided task while managing the state of the [Process].
+	//
+	// Run manages the request queue and may restart the process if it is not
+	// healthy or if the number of handled requests exceeds the maximum limit.
+	//
+	// It returns an error if the task cannot be run or if the process state
+	// cannot be managed properly.
+	Run(ctx context.Context, logger *zap.Logger, task func() error) error
+
+	// ReqQueueSize returns the current size of the request queue.
+	ReqQueueSize() int64
+
+	// RestartsCount returns the current number of restart.
+	RestartsCount() int64
+}
+
+type processSupervisor struct {
+	logger          *zap.Logger
+	process         Process
+	maxReqLimit     int64
+	maxQueueSize    int64
+	mutexChan       chan struct{}
+	firstStart      atomic.Bool
+	reqCounter      atomic.Int64
+	reqQueueSize    atomic.Int64
+	restartsCounter atomic.Int64
+	isRestarting    atomic.Bool
+}
+
+// NewProcessSupervisor initializes a new [ProcessSupervisor].
+func NewProcessSupervisor(logger *zap.Logger, process Process, maxReqLimit, maxQueueSize int64) ProcessSupervisor {
+	b := &processSupervisor{
+		logger:       logger,
+		process:      process,
+		mutexChan:    make(chan struct{}, 1),
+		maxReqLimit:  maxReqLimit,
+		maxQueueSize: maxQueueSize,
+	}
+	b.reqCounter.Store(0)
+	b.reqQueueSize.Store(0)
+	b.restartsCounter.Store(0)
+	b.isRestarting.Store(false)
+
+	return b
+}
+
+func (s *processSupervisor) Launch() error {
+	s.logger.Debug("start process")
+	err := s.process.Start(s.logger)
+	if err != nil {
+		return fmt.Errorf("start process: %w", err)
+	}
+
+	s.firstStart.Store(true)
+	s.logger.Debug("process successfully started")
+
+	return nil
+}
+
+func (s *processSupervisor) Shutdown() error {
+	s.logger.Debug("shutdown process")
+	err := s.process.Stop(s.logger)
+	if err != nil {
+		return fmt.Errorf("shutdown process: %w", err)
+	}
+
+	s.logger.Debug("process successfully shutdown")
+
+	return nil
+}
+
+func (s *processSupervisor) restart() error {
+	if s.isRestarting.Load() {
+		s.logger.Debug("process already restarting, skip restart")
+
+		return ErrProcessAlreadyRestarting
+	}
+
+	s.logger.Debug("restart process")
+	s.isRestarting.Store(true)
+	defer s.isRestarting.Store(false)
+
+	err := s.Shutdown()
+	if err != nil {
+		// No big deal? Chances are it's already stopped.
+		s.logger.Debug(fmt.Sprintf("stop process before restart: %s", err))
+	}
+
+	err = s.Launch()
+	if err != nil {
+		return fmt.Errorf("restart process: %w", err)
+	}
+
+	s.reqCounter.Store(0)
+	s.restartsCounter.Add(1)
+	s.logger.Debug("process successfully restarted")
+
+	return nil
+}
+
+func (s *processSupervisor) Healthy() bool {
+	if !s.firstStart.Load() {
+		// A non-started process is always healthy.
+		return true
+	}
+
+	if s.isRestarting.Load() {
+		// A restarting process is always healthy.
+		return true
+	}
+
+	return s.process.Healthy(s.logger)
+}
+
+func (s *processSupervisor) Run(ctx context.Context, logger *zap.Logger, task func() error) error {
+	// A user reported a potential issue:
+	//
+	// "Although the counting operation is atomic, nothing prevent 2 concurrent
+	// goroutines to retrieve the same 'currentQueueSize' and to compare its
+	// value against the max limit. Then, resulting queue size would be 1 above
+	// the allowed limit."
+	//
+	// However, he was unable to actually trigger this issue, even when sending
+	// a lot of requests.
+	//
+	// For now, the best option is to consider this issue to be unlikely to
+	// happen, and keep the code as it is because it is more readable this way.
+	//
+	// See https://github.com/gotenberg/gotenberg/issues/951.
+	currentQueueSize := s.reqQueueSize.Load()
+	if s.maxQueueSize > 0 && currentQueueSize >= s.maxQueueSize {
+		return ErrMaximumQueueSizeExceeded
+	}
+
+	s.reqQueueSize.Add(1)
+
+	for {
+		err := func() error {
+			select {
+			case s.mutexChan <- struct{}{}:
+				logger.Debug("process lock acquired")
+				s.reqQueueSize.Add(-1)
+				s.reqCounter.Add(1)
+				releaseMutexChan := true
+
+				defer func() {
+					if releaseMutexChan {
+						logger.Debug("process lock released")
+						<-s.mutexChan
+					}
+				}()
+
+				if !s.firstStart.Load() {
+					err := s.runWithDeadline(ctx, func() error {
+						return s.Launch()
+					})
+					if err != nil {
+						return fmt.Errorf("process first start: %w", err)
+					}
+				}
+
+				if !s.Healthy() {
+					s.logger.Debug("process is unhealthy, cannot handle task, restarting...")
+					err := s.runWithDeadline(ctx, func() error {
+						return s.restart()
+					})
+					if err != nil {
+						return fmt.Errorf("process restart before task: %w", err)
+					}
+				}
+
+				err := s.runWithDeadline(ctx, task)
+
+				if s.maxReqLimit > 0 && s.reqCounter.Load() >= s.maxReqLimit {
+					s.logger.Debug("max request limit reached, restarting eagerly...")
+					releaseMutexChan = false
+
+					go func() {
+						err := s.runWithDeadline(context.Background(), func() error {
+							return s.restart()
+						})
+						if err != nil {
+							s.logger.Error(fmt.Sprintf("process restart after task: %v", err))
+						}
+						logger.Debug("process lock released")
+						<-s.mutexChan
+					}()
+				}
+
+				// Note: no error wrapping because it leaks on Chromium console exceptions output.
+				return err
+			case <-ctx.Done():
+				logger.Debug("failed to acquire process lock before deadline")
+				s.reqQueueSize.Add(-1)
+
+				return fmt.Errorf("acquire process lock: %w", ctx.Err())
+			}
+		}()
+
+		if errors.Is(err, ErrProcessAlreadyRestarting) {
+			logger.Debug("process is already restarting, trying to acquire process lock again...")
+			s.reqQueueSize.Add(1)
+			continue
+		}
+
+		// Note: no error wrapping because it leaks on Chromium console exceptions output.
+		return err
+	}
+}
+
+func (s *processSupervisor) runWithDeadline(ctx context.Context, task func() error) error {
+	runChan := make(chan error, 1)
+	go func() {
+		runChan <- task()
+	}()
+
+	for {
+		select {
+		case err := <-runChan:
+			return err
+		case <-ctx.Done():
+			return ctx.Err()
+		}
+	}
+}
+
+func (s *processSupervisor) ReqQueueSize() int64 {
+	return s.reqQueueSize.Load()
+}
+
+func (s *processSupervisor) RestartsCount() int64 {
+	return s.restartsCounter.Load()
+}
+
+// Interface guards.
+var (
+	_ ProcessSupervisor = (*processSupervisor)(nil)
+)

pkg/gotenberg/supervisor_test.go

@@ -0,0 +1,639 @@
+package gotenberg
+
+import (
+	"context"
+	"errors"
+	"sync"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"go.uber.org/zap"
+)
+
+func TestProcessSupervisor_Launch(t *testing.T) {
+	for _, tc := range []struct {
+		scenario      string
+		startError    error
+		expectError   bool
+		firstStartSet bool
+	}{
+		{
+			scenario:      "successful launch",
+			startError:    nil,
+			expectError:   false,
+			firstStartSet: true,
+		},
+		{
+			scenario:      "failed launch",
+			startError:    errors.New("start error"),
+			expectError:   true,
+			firstStartSet: false,
+		},
+		{
+			scenario:      "process already started",
+			startError:    nil,
+			expectError:   false,
+			firstStartSet: true,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			logger := zap.NewNop()
+
+			process := &ProcessMock{
+				StartMock: func(logger *zap.Logger) error {
+					return tc.startError
+				},
+			}
+
+			ps := NewProcessSupervisor(logger, process, 5, 0).(*processSupervisor)
+			if tc.firstStartSet {
+				ps.firstStart.Store(true)
+			}
+
+			err := ps.Launch()
+
+			if !tc.expectError && err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
+
+			if tc.expectError && err == nil {
+				t.Fatal("expected error but got none")
+			}
+
+			if tc.firstStartSet && !ps.firstStart.Load() {
+				t.Error("expected firstStart to be set but it was not")
+			}
+		})
+	}
+}
+
+func TestProcessSupervisor_Shutdown(t *testing.T) {
+	for _, tc := range []struct {
+		scenario    string
+		stopError   error
+		expectError bool
+	}{
+		{
+			scenario:    "successful shutdown",
+			stopError:   nil,
+			expectError: false,
+		},
+		{
+			scenario:    "failed shutdown",
+			stopError:   errors.New("stop error"),
+			expectError: true,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			logger := zap.NewNop()
+
+			process := &ProcessMock{
+				StopMock: func(logger *zap.Logger) error {
+					return tc.stopError
+				},
+			}
+
+			ps := NewProcessSupervisor(logger, process, 5, 0)
+			err := ps.Shutdown()
+
+			if !tc.expectError && err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
+
+			if tc.expectError && err == nil {
+				t.Fatal("expected error but got none")
+			}
+		})
+	}
+}
+
+func TestProcessSupervisor_restart(t *testing.T) {
+	for _, tc := range []struct {
+		scenario            string
+		initiallyRestarting bool
+		startError          error
+		stopError           error
+		expectError         bool
+		expectedError       error
+	}{
+		{
+			scenario:            "already restarting",
+			initiallyRestarting: true,
+			expectError:         true,
+			expectedError:       ErrProcessAlreadyRestarting,
+		},
+		{
+			scenario:    "successful restart",
+			startError:  nil,
+			stopError:   nil,
+			expectError: false,
+		},
+		{
+			scenario:    "failed to stop during restart",
+			startError:  nil,
+			stopError:   errors.New("stop error"),
+			expectError: false,
+		},
+		{
+			scenario:    "failed to start during restart",
+			startError:  errors.New("start error"),
+			stopError:   nil,
+			expectError: true,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			logger := zap.NewNop()
+
+			process := &ProcessMock{
+				StartMock: func(logger *zap.Logger) error {
+					return tc.startError
+				},
+				StopMock: func(logger *zap.Logger) error {
+					return tc.stopError
+				},
+			}
+
+			ps := NewProcessSupervisor(logger, process, 5, 0).(*processSupervisor)
+			if tc.initiallyRestarting {
+				ps.isRestarting.Store(true)
+			}
+
+			err := ps.restart()
+
+			if !tc.expectError && err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
+
+			if tc.expectError && err == nil {
+				t.Fatal("expected error but got none")
+			}
+
+			if tc.expectedError != nil && !errors.Is(err, tc.expectedError) {
+				t.Fatalf("expected error %v but got: %v", tc.expectedError, err)
+			}
+		})
+	}
+}
+
+func TestProcessSupervisor_Healthy(t *testing.T) {
+	for _, tc := range []struct {
+		scenario            string
+		initiallyStarted    bool
+		initiallyRestarting bool
+		processHealthy      bool
+		expectHealthy       bool
+	}{
+		{
+			scenario:         "non-started process is always healthy",
+			initiallyStarted: false,
+			expectHealthy:    true,
+		},
+		{
+			scenario:            "restarting process is always healthy",
+			initiallyStarted:    true,
+			initiallyRestarting: true,
+			expectHealthy:       true,
+		},
+		{
+			scenario:         "process reports as healthy",
+			initiallyStarted: true,
+			processHealthy:   true,
+			expectHealthy:    true,
+		},
+		{
+			scenario:         "process reports as unhealthy",
+			initiallyStarted: true,
+			processHealthy:   false,
+			expectHealthy:    false,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			logger := zap.NewNop()
+
+			process := &ProcessMock{
+				HealthyMock: func(logger *zap.Logger) bool {
+					return tc.processHealthy
+				},
+			}
+
+			ps := NewProcessSupervisor(logger, process, 5, 0).(*processSupervisor)
+			if tc.initiallyStarted {
+				ps.firstStart.Store(true)
+			}
+			if tc.initiallyRestarting {
+				ps.isRestarting.Store(true)
+			}
+
+			healthy := ps.Healthy()
+
+			if healthy != tc.expectHealthy {
+				t.Fatalf("expected healthy to be %v but got %v", tc.expectHealthy, healthy)
+			}
+		})
+	}
+}
+
+func TestProcessSupervisor_Run(t *testing.T) {
+	for _, tc := range []struct {
+		scenario             string
+		initiallyStarted     bool
+		isRestarting         bool
+		startError           error
+		processHealthy       bool
+		maxReqLimit          int64
+		tasksToRun           int
+		taskError            error
+		expectError          bool
+		skipCallsCheck       bool
+		expectedStartCalls   int64
+		expectedHealthyCalls int64
+		expectedStopCalls    int64
+		currentQueueSize     int64
+		maxQueueSize         int64
+	}{
+		{
+			scenario:             "successfully run task on non-started process",
+			initiallyStarted:     false,
+			isRestarting:         false,
+			processHealthy:       true,
+			maxReqLimit:          2,
+			tasksToRun:           1,
+			expectError:          false,
+			expectedStartCalls:   1,
+			expectedHealthyCalls: 1,
+			expectedStopCalls:    0,
+		},
+		{
+			scenario:             "cannot launch non-started process",
+			initiallyStarted:     false,
+			isRestarting:         false,
+			startError:           errors.New("launch error"),
+			processHealthy:       true,
+			maxReqLimit:          2,
+			tasksToRun:           1,
+			expectError:          true,
+			expectedStartCalls:   1,
+			expectedHealthyCalls: 0,
+			expectedStopCalls:    0,
+		},
+		{
+			scenario:             "run task with unhealthy process causing restart",
+			initiallyStarted:     true,
+			isRestarting:         false,
+			processHealthy:       false,
+			maxReqLimit:          2,
+			tasksToRun:           1,
+			expectError:          false,
+			expectedStartCalls:   1,
+			expectedHealthyCalls: 1,
+			expectedStopCalls:    1,
+		},
+		{
+			scenario:             "cannot restart unhealthy process",
+			startError:           errors.New("start error"),
+			initiallyStarted:     true,
+			isRestarting:         false,
+			processHealthy:       false,
+			maxReqLimit:          2,
+			tasksToRun:           1,
+			expectError:          true,
+			expectedStartCalls:   1,
+			expectedHealthyCalls: 1,
+			expectedStopCalls:    1,
+		},
+		{
+			scenario:         "ErrProcessAlreadyRestarting",
+			initiallyStarted: true,
+			isRestarting:     true,
+			processHealthy:   false,
+			maxReqLimit:      1,
+			tasksToRun:       1,
+			expectError:      true,
+			skipCallsCheck:   true,
+		},
+		{
+			scenario:             "run tasks reaching max request limit causing restart",
+			initiallyStarted:     true,
+			isRestarting:         false,
+			processHealthy:       true,
+			maxReqLimit:          2,
+			tasksToRun:           3,
+			expectError:          false,
+			expectedStartCalls:   1,
+			expectedHealthyCalls: 3,
+			expectedStopCalls:    1,
+		},
+		{
+			scenario:             "auto-restart after reaching max request limit",
+			startError:           errors.New("start error"),
+			initiallyStarted:     true,
+			isRestarting:         false,
+			processHealthy:       true,
+			maxReqLimit:          2,
+			tasksToRun:           2,
+			expectError:          true,
+			expectedStartCalls:   1,
+			expectedHealthyCalls: 2,
+			expectedStopCalls:    1,
+		},
+		{
+			scenario:             "task error",
+			initiallyStarted:     true,
+			isRestarting:         false,
+			processHealthy:       true,
+			maxReqLimit:          0,
+			tasksToRun:           1,
+			taskError:            errors.New("task error"),
+			expectError:          true,
+			expectedStartCalls:   0,
+			expectedHealthyCalls: 1,
+			expectedStopCalls:    0,
+		},
+		{
+			scenario:             "queue size exceeded",
+			initiallyStarted:     false,
+			isRestarting:         false,
+			processHealthy:       true,
+			maxReqLimit:          2,
+			tasksToRun:           1,
+			expectError:          true,
+			expectedStartCalls:   0,
+			expectedHealthyCalls: 0,
+			expectedStopCalls:    0,
+			currentQueueSize:     1,
+			maxQueueSize:         1,
+		},
+		{
+			scenario:             "queue size not exceeded",
+			initiallyStarted:     false,
+			isRestarting:         false,
+			processHealthy:       true,
+			maxReqLimit:          2,
+			tasksToRun:           1,
+			expectError:          true,
+			expectedStartCalls:   1,
+			expectedHealthyCalls: 1,
+			expectedStopCalls:    0,
+			currentQueueSize:     1,
+			maxQueueSize:         2,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			logger := zap.NewNop()
+
+			var startCalls, healthyCalls, stopCalls atomic.Int64
+			startCalls.Store(0)
+			healthyCalls.Store(0)
+			stopCalls.Store(0)
+
+			process := &ProcessMock{
+				StartMock: func(logger *zap.Logger) error {
+					startCalls.Add(1)
+					return tc.startError
+				},
+				StopMock: func(logger *zap.Logger) error {
+					stopCalls.Add(1)
+					return nil
+				},
+				HealthyMock: func(logger *zap.Logger) bool {
+					healthyCalls.Add(1)
+					return tc.processHealthy
+				},
+			}
+
+			ps := NewProcessSupervisor(logger, process, tc.maxReqLimit, tc.maxQueueSize).(*processSupervisor)
+			if tc.initiallyStarted {
+				ps.firstStart.Store(true)
+			}
+			if tc.isRestarting {
+				ps.isRestarting.Store(true)
+			}
+			if tc.currentQueueSize > 0 {
+				ps.reqQueueSize.Store(tc.currentQueueSize)
+			}
+
+			task := func() error {
+				return tc.taskError
+			}
+
+			ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
+			defer cancel()
+
+			var wg sync.WaitGroup
+			errorChan := make(chan error, tc.tasksToRun)
+
+			for i := 0; i < tc.tasksToRun; i++ {
+				wg.Add(1)
+				go func() {
+					defer wg.Done()
+					err := ps.Run(ctx, logger, task)
+					if err != nil {
+						errorChan <- err
+					}
+				}()
+			}
+
+			wg.Wait()
+			close(errorChan)
+
+			for err := range errorChan {
+				if tc.expectError && err == nil {
+					t.Fatal("expected an error but got none")
+				}
+
+				if !tc.expectError && err != nil {
+					t.Fatalf("expected no error but got: %v", err)
+				}
+			}
+
+			if tc.skipCallsCheck {
+				return
+			}
+
+			// Making sure restarts are finished.
+			ps.mutexChan <- struct{}{}
+			<-ps.mutexChan
+
+			if startCalls.Load() != tc.expectedStartCalls {
+				t.Errorf("expected %d process.Start calls, got %d", tc.expectedStartCalls, startCalls.Load())
+			}
+
+			if healthyCalls.Load() != tc.expectedHealthyCalls {
+				t.Errorf("expected %d process.Healthy calls, got %d", tc.expectedHealthyCalls, healthyCalls.Load())
+			}
+
+			if stopCalls.Load() != tc.expectedStopCalls {
+				t.Errorf("expected %d process.Stop calls, got %d", tc.expectedStopCalls, stopCalls.Load())
+			}
+		})
+	}
+}
+
+func TestProcessSupervisor_runWithDeadline(t *testing.T) {
+	for _, tc := range []struct {
+		scenario    string
+		ctxDone     bool
+		expectError bool
+	}{
+		{
+			scenario:    "task finished",
+			ctxDone:     false,
+			expectError: false,
+		},
+		{
+			scenario:    "context expired",
+			ctxDone:     true,
+			expectError: true,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			ps := NewProcessSupervisor(zap.NewNop(), new(ProcessMock), 0, 0).(*processSupervisor)
+
+			ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
+			if tc.ctxDone {
+				cancel()
+			} else {
+				defer cancel()
+			}
+
+			err := ps.runWithDeadline(ctx, func() error {
+				return nil
+			})
+
+			if tc.expectError && err == nil {
+				t.Fatal("expected an error but got none")
+			}
+
+			if !tc.expectError && err != nil {
+				t.Fatalf("expected no error but got: %v", err)
+			}
+		})
+	}
+}
+
+func TestProcessSupervisor_ReqQueueSize(t *testing.T) {
+	logger := zap.NewNop()
+	process := &ProcessMock{
+		StartMock: func(logger *zap.Logger) error {
+			return nil
+		},
+		HealthyMock: func(logger *zap.Logger) bool {
+			return true
+		},
+	}
+	ps := NewProcessSupervisor(logger, process, 0, 0).(*processSupervisor)
+
+	// Simulating a lock.
+	ps.mutexChan <- struct{}{}
+
+	if ps.ReqQueueSize() != 0 {
+		t.Fatalf("expected queue size to be 0 but got %d", ps.ReqQueueSize())
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	var wg sync.WaitGroup
+	errorChan := make(chan error, 10)
+
+	for i := 0; i < 10; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			err := ps.Run(ctx, logger, func() error {
+				return nil
+			})
+			if err != nil {
+				errorChan <- err
+			}
+		}()
+	}
+
+	// We have to wait a little bit so that the request queue size may change.
+	time.Sleep(10 * time.Millisecond)
+
+	if ps.ReqQueueSize() != 10 {
+		t.Fatalf("expected queue size to be 10 but got %d", ps.ReqQueueSize())
+	}
+
+	wg.Wait()
+	close(errorChan)
+
+	for err := range errorChan {
+		if err == nil {
+			t.Error("expected a lock error but got none")
+		}
+	}
+
+	if ps.ReqQueueSize() != 0 {
+		t.Errorf("expected queue size to be 0 but got %d", ps.ReqQueueSize())
+	}
+}
+
+func TestProcessSupervisor_RestartsCount(t *testing.T) {
+	for _, tc := range []struct {
+		scenario              string
+		initialRestartsCount  int64
+		restartAttempts       int
+		startError            error
+		stopError             error
+		expectedRestartsCount int64
+	}{
+		{
+			scenario:              "no restarts, counter remains 0",
+			initialRestartsCount:  0,
+			restartAttempts:       0,
+			expectedRestartsCount: 0,
+		},
+		{
+			scenario:              "successful restart increases counter",
+			initialRestartsCount:  0,
+			restartAttempts:       1,
+			startError:            nil,
+			stopError:             nil,
+			expectedRestartsCount: 1,
+		},
+		{
+			scenario:              "failed to stop during restart, no impact",
+			initialRestartsCount:  0,
+			restartAttempts:       1,
+			startError:            nil,
+			stopError:             errors.New("stop error"),
+			expectedRestartsCount: 1,
+		},
+		{
+			scenario:              "multiple successful restarts",
+			initialRestartsCount:  0,
+			restartAttempts:       3,
+			startError:            nil,
+			stopError:             nil,
+			expectedRestartsCount: 3,
+		},
+	} {
+		t.Run(tc.scenario, func(t *testing.T) {
+			logger := zap.NewNop()
+
+			process := &ProcessMock{
+				StartMock: func(logger *zap.Logger) error {
+					return tc.startError
+				},
+				StopMock: func(logger *zap.Logger) error {
+					return tc.stopError
+				},
+			}
+
+			ps := NewProcessSupervisor(logger, process, 0, 0).(*processSupervisor)
+			ps.restartsCounter.Store(tc.initialRestartsCount)
+
+			for i := 0; i < tc.restartAttempts; i++ {
+				_ = ps.restart()
+			}
+
+			actualRestartsCount := ps.RestartsCount()
+			if actualRestartsCount != tc.expectedRestartsCount {
+				t.Fatalf("expected restarts count to be %d, but got  %d", tc.expectedRestartsCount, actualRestartsCount)
+			}
+		})
+	}
+}

pkg/gotenberg/version.go

@@ -0,0 +1,4 @@
+package gotenberg
+
+// Version is the... version of the Gotenberg application.
+var Version = "snapshot"

pkg/modules/api/api.go

@@ -4,52 +4,69 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"net"
 	"net/http"
-	"os"
 	"sort"
-	"strconv"
 	"strings"
 	"time"
 
 	"github.com/alexliesenfeld/health"
-	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
-	"github.com/gotenberg/gotenberg/v7/pkg/modules/gc"
+	"github.com/dlclark/regexp2"
 	"github.com/labstack/echo/v4"
 	flag "github.com/spf13/pflag"
 	"go.uber.org/multierr"
 	"go.uber.org/zap"
 	"golang.org/x/net/http2"
+	"golang.org/x/sync/errgroup"
+
+	"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
 )
 
 func init() {
-	gotenberg.MustRegisterModule(API{})
+	gotenberg.MustRegisterModule(new(Api))
 }
 
-// API is a module which provides an HTTP server. Other modules may add routes,
+// Api is a module that provides an HTTP server. Other modules may add routes,
 // middlewares or health checks.
-type API struct {
+type Api struct {
 	port                      int
-	readTimeout               time.Duration
-	writeTimeout              time.Duration
+	bindIp                    string
+	tlsCertFile               string
+	tlsKeyFile                string
+	startTimeout              time.Duration
+	bodyLimit                 int64
 	timeout                   time.Duration
 	rootPath                  string
 	traceHeader               string
+	basicAuthUsername         string
+	basicAuthPassword         string
+	downloadFromCfg           downloadFromConfig
 	disableHealthCheckLogging bool
+	enableDebugRoute          bool
 
 	routes              []Route
 	externalMiddlewares []Middleware
 	healthChecks        []health.CheckerOption
-	gcGraceDuration     time.Duration
+	readyFn             []func() error
+	asyncCounters       []AsynchronousCounter
+	fs                  *gotenberg.FileSystem
 	logger              *zap.Logger
 	srv                 *echo.Echo
 }
 
-// Router is a module interface which adds routes to the API.
+type downloadFromConfig struct {
+	allowList *regexp2.Regexp
+	denyList  *regexp2.Regexp
+	maxRetry  int
+	disable   bool
+}
+
+// Router is a module interface that adds routes to the [Api].
 type Router interface {
 	Routes() ([]Route, error)
 }
 
-// Route represents a route from a Router.
+// Route represents a route from a [Router].
 type Route struct {
 	// Method is the HTTP method of the route (i.e., GET, POST, etc.).
 	// Required.
@@ -67,18 +84,18 @@ type Route struct {
 	// Optional.
 	DisableLogging bool
 
-	// Handler is the function which handles the request.
+	// Handler is the function that handles the request.
 	// Required.
 	Handler echo.HandlerFunc
 }
 
-// MiddlewareProvider is a module interface which adds middlewares to the API.
+// MiddlewareProvider is a module interface that adds middlewares to the [Api].
 type MiddlewareProvider interface {
 	Middlewares() ([]Middleware, error)
 }
 
-// MiddlewareStack is a type which helps to determine in which stack the
-// middlewares provided by the MiddlewareProvider modules should be located.
+// MiddlewareStack is a type that helps to determine in which stack the
+// middlewares provided by the [MiddlewareProvider] modules should be located.
 type MiddlewareStack uint32
 
 const (
@@ -87,8 +104,8 @@ const (
 	MultipartStack
 )
 
-// MiddlewarePriority is a type which helps to determine the execution order of
-// middlewares provided by the MiddlewareProvider modules in a stack.
+// MiddlewarePriority is a type that helps to determine the execution order of
+// middlewares provided by the [MiddlewareProvider] modules in a stack.
 type MiddlewarePriority uint32
 
 const (
@@ -99,40 +116,40 @@ const (
 	VeryHighPriority
 )
 
-// Middleware is a middleware which can be added to the API's middlewares
+// Middleware is a middleware that can be added to the [Api]'s middlewares
 // chain.
 //
-//  middleware := Middleware{
-//    Handler: func() echo.MiddlewareFunc {
-//      return func(next echo.HandlerFunc) echo.HandlerFunc {
-//        return func(c echo.Context) error {
-//          rootPath := c.Get("rootPath").(string)
-//          healthURI := fmt.Sprintf("%shealth", rootPath)
+//	middleware := Middleware{
+//	  Handler: func() echo.MiddlewareFunc {
+//	    return func(next echo.HandlerFunc) echo.HandlerFunc {
+//	      return func(c echo.Context) error {
+//	        rootPath := c.Get("rootPath").(string)
+//	        healthURI := fmt.Sprintf("%shealth", rootPath)
 //
-//          // Skip the middleware if health check URI.
-//          if c.Request().RequestURI == healthURI {
-//            // Call the next middleware in the chain.
-//            return next(c)
-//          }
+//	        // Skip the middleware if health check URI.
+//	        if c.Request().RequestURI == healthURI {
+//	          // Call the next middleware in the chain.
+//	          return next(c)
+//	        }
 //
-//          // Your middleware process.
-//          // ...
+//	        // Your middleware process.
+//	        // ...
 //
-//          // Call the next middleware in the chain.
-//          return next(c)
-//        }
-//      }
-//    }(),
-//  }
+//	        // Call the next middleware in the chain.
+//	        return next(c)
+//	      }
+//	    }
+//	  }(),
+//	}
 type Middleware struct {
 	// Stack tells in which stack the middleware should be located.
-	// Default to DefaultStack.
+	// Default to [DefaultStack].
 	// Optional.
 	Stack MiddlewareStack
 
 	// Priority tells if the middleware should be positioned high or not in
 	// its stack.
-	// Default to VeryLowPriority.
+	// Default to [VeryLowPriority].
 	// Optional.
 	Priority MiddlewarePriority
 
@@ -141,83 +158,98 @@ type Middleware struct {
 	Handler echo.MiddlewareFunc
 }
 
-// HealthChecker is a module interface which allows adding health checks to the
+// HealthChecker is a module interface that allows adding health checks to the
 // API.
 //
 // See https://github.com/alexliesenfeld/health for more details.
 type HealthChecker interface {
 	Checks() ([]health.CheckerOption, error)
+	Ready() error
 }
 
-// GarbageCollectorGraceDurationIncrementer is a module interface for
-// increasing the grace duration provided by the API for the garbage collector.
-type GarbageCollectorGraceDurationIncrementer interface {
-	AddGraceDuration() time.Duration
+// AsynchronousCounter is a module interface that returns the number of active
+// asynchronous requests.
+//
+// See https://github.com/gotenberg/gotenberg/issues/1022.
+type AsynchronousCounter interface {
+	AsyncCount() int64
 }
 
-// Descriptor returns an API's module descriptor.
-func (API) Descriptor() gotenberg.ModuleDescriptor {
+// Descriptor returns an [Api]'s module descriptor.
+func (a *Api) Descriptor() gotenberg.ModuleDescriptor {
 	return gotenberg.ModuleDescriptor{
 		ID: "api",
 		FlagSet: func() *flag.FlagSet {
 			fs := flag.NewFlagSet("api", flag.ExitOnError)
 			fs.Int("api-port", 3000, "Set the port on which the API should listen")
 			fs.String("api-port-from-env", "", "Set the environment variable with the port on which the API should listen - override the default port")
-			fs.Duration("api-read-timeout", time.Duration(30)*time.Second, "Set the maximum duration allowed to read a complete request, including the body")
-			fs.Duration("api-process-timeout", time.Duration(30)*time.Second, "Set the maximum duration allowed to process a request")
-			fs.Duration("api-write-timeout", time.Duration(30)*time.Second, "Set the maximum duration before timing out writes of the response")
+			fs.String("api-bind-ip", "", "Set the IP address the API should bind to for incoming connections")
+			fs.String("api-tls-cert-file", "", "Path to the TLS/SSL certificate file - for HTTPS support")
+			fs.String("api-tls-key-file", "", "Path to the TLS/SSL key file - for HTTPS support")
+			fs.Duration("api-start-timeout", time.Duration(30)*time.Second, "Set the time limit for the API to start")
 			fs.Duration("api-timeout", time.Duration(30)*time.Second, "Set the time limit for requests")
+			fs.String("api-body-limit", "", "Set the body limit for multipart/form-data requests - it accepts values like 5MB, 1GB, etc")
 			fs.String("api-root-path", "/", "Set the root path of the API - for service discovery via URL paths")
 			fs.String("api-trace-header", "Gotenberg-Trace", "Set the header name to use for identifying requests")
+			fs.Bool("api-enable-basic-auth", false, "Enable basic authentication - will look for the GOTENBERG_API_BASIC_AUTH_USERNAME and GOTENBERG_API_BASIC_AUTH_PASSWORD environment variables")
+			fs.String("api-download-from-allow-list", "", "Set the allowed URLs for the download from feature using a regular expression")
+			fs.String("api-download-from-deny-list", "", "Set the denied URLs for the download from feature using a regular expression")
+			fs.Int("api-download-from-max-retry", 4, "Set the maximum number of retries for the download from feature")
+			fs.Bool("api-disable-download-from", false, "Disable the download from feature")
 			fs.Bool("api-disable-health-check-logging", false, "Disable health check logging")
-
-			var err error
-			err = multierr.Append(err, fs.MarkDeprecated("api-read-timeout", "use api-timeout instead"))
-			err = multierr.Append(err, fs.MarkDeprecated("api-process-timeout", "use api-timeout instead"))
-			err = multierr.Append(err, fs.MarkDeprecated("api-write-timeout", "use api-timeout instead"))
-
-			if err != nil {
-				panic(fmt.Errorf("create deprecated flags for the api module: %v", err))
-			}
-
+			fs.Bool("api-enable-debug-route", false, "Enable the debug route")
 			return fs
 		}(),
-		New: func() gotenberg.Module { return new(API) },
+		New: func() gotenberg.Module { return new(Api) },
 	}
 }
 
 // Provision sets the module properties.
-func (a *API) Provision(ctx *gotenberg.Context) error {
+func (a *Api) Provision(ctx *gotenberg.Context) error {
 	flags := ctx.ParsedFlags()
 	a.port = flags.MustInt("api-port")
-	a.readTimeout = flags.MustDeprecatedDuration("api-read-timeout", "api-timeout")
-	a.writeTimeout = flags.MustDeprecatedDuration("api-write-timeout", "api-timeout")
-	a.timeout = flags.MustDeprecatedDuration("api-process-timeout", "api-timeout")
+	a.bindIp = flags.MustString("api-bind-ip")
+	a.tlsCertFile = flags.MustString("api-tls-cert-file")
+	a.tlsKeyFile = flags.MustString("api-tls-key-file")
+	a.startTimeout = flags.MustDuration("api-start-timeout")
+	a.timeout = flags.MustDuration("api-timeout")
+	a.bodyLimit = flags.MustHumanReadableBytes("api-body-limit")
 	a.rootPath = flags.MustString("api-root-path")
 	a.traceHeader = flags.MustString("api-trace-header")
+	a.downloadFromCfg = downloadFromConfig{
+		allowList: flags.MustRegexp("api-download-from-allow-list"),
+		denyList:  flags.MustRegexp("api-download-from-deny-list"),
+		maxRetry:  flags.MustInt("api-download-from-max-retry"),
+		disable:   flags.MustBool("api-disable-download-from"),
+	}
 	a.disableHealthCheckLogging = flags.MustBool("api-disable-health-check-logging")
+	a.enableDebugRoute = flags.MustBool("api-enable-debug-route")
 
 	// Port from env?
 	portEnvVar := flags.MustString("api-port-from-env")
 	if portEnvVar != "" {
-		val, ok := os.LookupEnv(portEnvVar)
-
-		if !ok {
-			return fmt.Errorf("environment variable '%s' does not exist", portEnvVar)
-		}
-
-		if val == "" {
-			return fmt.Errorf("environment variable '%s' is empty", portEnvVar)
-		}
-
-		port, err := strconv.Atoi(val)
+		port, err := gotenberg.IntEnv(portEnvVar)
 		if err != nil {
-			return fmt.Errorf("get int value of environment variable '%s': %w", portEnvVar, err)
+			return fmt.Errorf("get API port from env: %w", err)
 		}
-
 		a.port = port
 	}
 
+	// Enable basic auth?
+	enableBasicAuth := flags.MustBool("api-enable-basic-auth")
+	if enableBasicAuth {
+		basicAuthUsername, err := gotenberg.StringEnv("GOTENBERG_API_BASIC_AUTH_USERNAME")
+		if err != nil {
+			return fmt.Errorf("get basic auth username from env: %w", err)
+		}
+		basicAuthPassword, err := gotenberg.StringEnv("GOTENBERG_API_BASIC_AUTH_PASSWORD")
+		if err != nil {
+			return fmt.Errorf("get basic auth password from env: %w", err)
+		}
+		a.basicAuthUsername = basicAuthUsername
+		a.basicAuthPassword = basicAuthPassword
+	}
+
 	// Get routes from modules.
 	mods, err := ctx.Modules(new(Router))
 	if err != nil {
@@ -281,20 +313,21 @@ func (a *API) Provision(ctx *gotenberg.Context) error {
 		}
 
 		a.healthChecks = append(a.healthChecks, checks...)
+		a.readyFn = append(a.readyFn, healthChecker.Ready)
 	}
 
-	// Grace duration.
-	a.gcGraceDuration = a.timeout
-
-	mods, err = ctx.Modules(new(GarbageCollectorGraceDurationIncrementer))
+	// Get asynchronous counters.
+	mods, err = ctx.Modules(new(AsynchronousCounter))
 	if err != nil {
-		return fmt.Errorf("get garbage collector grace duration increments: %w", err)
+		return fmt.Errorf("get asynchronous counters: %w", err)
 	}
 
-	for _, incrementer := range mods {
-		a.gcGraceDuration += incrementer.(GarbageCollectorGraceDurationIncrementer).AddGraceDuration()
+	a.asyncCounters = make([]AsynchronousCounter, len(mods))
+	for i, asyncCounter := range mods {
+		a.asyncCounters[i] = asyncCounter.(AsynchronousCounter)
 	}
 
+	// Logger.
 	loggerProvider, err := ctx.Module(new(gotenberg.LoggerProvider))
 	if err != nil {
 		return fmt.Errorf("get logger provider: %w", err)
@@ -307,11 +340,14 @@ func (a *API) Provision(ctx *gotenberg.Context) error {
 
 	a.logger = logger
 
+	// File system.
+	a.fs = gotenberg.NewFileSystem(new(gotenberg.OsMkdirAll))
+
 	return nil
 }
 
 // Validate validates the module properties.
-func (a API) Validate() error {
+func (a *Api) Validate() error {
 	var err error
 
 	if a.port < 1 || a.port > 65535 {
@@ -320,6 +356,16 @@ func (a API) Validate() error {
 		)
 	}
 
+	if a.bindIp != "" && net.ParseIP(a.bindIp) == nil {
+		err = multierr.Append(err, errors.New("IP must be a valid IP address"))
+	}
+
+	if (a.tlsCertFile != "" && a.tlsKeyFile == "") || (a.tlsCertFile == "" && a.tlsKeyFile != "") {
+		err = multierr.Append(err,
+			errors.New("both TLS certificate and key files must be set"),
+		)
+	}
+
 	if !strings.HasPrefix(a.rootPath, "/") {
 		err = multierr.Append(err,
 			errors.New("root path must start with /"),
@@ -342,8 +388,10 @@ func (a API) Validate() error {
 		return err
 	}
 
-	routesMap := make(map[string]string, len(a.routes)+1)
+	routesMap := make(map[string]string, len(a.routes)+3)
 	routesMap["/health"] = "/health"
+	routesMap["/version"] = "/version"
+	routesMap["/debug"] = "/debug"
 
 	for _, route := range a.routes {
 		if route.Path == "" {
@@ -383,14 +431,14 @@ func (a API) Validate() error {
 }
 
 // Start starts the HTTP server.
-func (a *API) Start() error {
+func (a *Api) Start() error {
 	a.srv = echo.New()
 	a.srv.HideBanner = true
 	a.srv.HidePort = true
-	a.srv.Server.ReadTimeout = a.readTimeout
+	a.srv.Server.ReadTimeout = a.timeout
 	a.srv.Server.IdleTimeout = a.timeout
 	// See https://github.com/gotenberg/gotenberg/issues/396.
-	a.srv.Server.WriteTimeout = a.writeTimeout + a.writeTimeout
+	a.srv.Server.WriteTimeout = a.timeout + a.timeout
 	a.srv.HTTPErrorHandler = httpErrorHandler()
 
 	// Let's prepare the modules' routes.
@@ -403,7 +451,7 @@ func (a *API) Start() error {
 		}
 	}
 
-	// Check if the user wish to add logging entries related to the health
+	// Check if the user wishes to add logging entries related to the health
 	// check route.
 	if a.disableHealthCheckLogging {
 		disableLoggingForPaths = append(disableLoggingForPaths, "health")
@@ -425,19 +473,32 @@ func (a *API) Start() error {
 			a.srv.Pre(externalMiddleware.Handler)
 		case MultipartStack:
 			externalMultipartMiddlewares = append(externalMultipartMiddlewares, externalMiddleware)
-		default:
+		case DefaultStack:
 			a.srv.Use(externalMiddleware.Handler)
 		}
 	}
 
 	hardTimeout := a.timeout + (time.Duration(5) * time.Second)
 
+	// Basic auth?
+	var securityMiddleware echo.MiddlewareFunc
+	if a.basicAuthUsername != "" {
+		securityMiddleware = basicAuthMiddleware(a.basicAuthUsername, a.basicAuthPassword)
+	} else {
+		securityMiddleware = func(next echo.HandlerFunc) echo.HandlerFunc {
+			return func(c echo.Context) error {
+				return next(c)
+			}
+		}
+	}
+
 	// Add the modules' routes and their specific middlewares.
 	for _, route := range a.routes {
 		var middlewares []echo.MiddlewareFunc
+		middlewares = append(middlewares, securityMiddleware)
 
 		if route.IsMultipart {
-			middlewares = append(middlewares, contextMiddleware(a.timeout))
+			middlewares = append(middlewares, contextMiddleware(a.fs, a.timeout, a.bodyLimit, a.downloadFromCfg))
 
 			for _, externalMultipartMiddleware := range externalMultipartMiddlewares {
 				middlewares = append(middlewares, externalMultipartMiddleware.Handler)
@@ -454,22 +515,89 @@ func (a *API) Start() error {
 		)
 	}
 
-	// Let's not forget the health check route.
+	// Root route.
+	a.srv.GET(
+		a.rootPath,
+		func(c echo.Context) error {
+			return c.HTML(http.StatusOK, `Hey, Gotenberg has no UI, it's an API. Head to the <a href="https://gotenberg.dev">documentation</a> to learn how to interact with it 🚀`)
+		},
+		securityMiddleware,
+	)
+
+	// Favicon route.
+	a.srv.GET(
+		fmt.Sprintf("%s%s", a.rootPath, "favicon.ico"),
+		func(c echo.Context) error {
+			return c.NoContent(http.StatusNoContent)
+		},
+		securityMiddleware,
+	)
+
+	// Let's not forget the health check routes...
+	checks := append(a.healthChecks, health.WithTimeout(a.timeout))
+	checker := health.NewChecker(checks...)
+	healthCheckHandler := health.NewHandler(checker)
+
 	a.srv.GET(
 		fmt.Sprintf("%s%s", a.rootPath, "health"),
 		func() echo.HandlerFunc {
-			checks := append(a.healthChecks, health.WithTimeout(a.timeout))
-			checker := health.NewChecker(checks...)
-
-			return echo.WrapHandler(health.NewHandler(checker))
+			return echo.WrapHandler(healthCheckHandler)
+		}(),
+		hardTimeoutMiddleware(hardTimeout),
+	)
+	a.srv.HEAD(
+		fmt.Sprintf("%s%s", a.rootPath, "health"),
+		func() echo.HandlerFunc {
+			return echo.WrapHandler(healthCheckHandler)
 		}(),
 		hardTimeoutMiddleware(hardTimeout),
 	)
 
+	// ...the version route.
+	a.srv.GET(
+		fmt.Sprintf("%s%s", a.rootPath, "version"),
+		func(c echo.Context) error {
+			return c.String(http.StatusOK, gotenberg.Version)
+		},
+		securityMiddleware,
+	)
+
+	// ...and the debug route.
+	if a.enableDebugRoute {
+		a.srv.GET(
+			fmt.Sprintf("%s%s", a.rootPath, "debug"),
+			func(c echo.Context) error {
+				return c.JSONPretty(http.StatusOK, gotenberg.Debug(), "  ")
+			},
+			securityMiddleware,
+		)
+	}
+
+	// Wait for all modules to be ready.
+	ctx, cancel := context.WithTimeout(context.Background(), a.startTimeout)
+	defer cancel()
+
+	eg, _ := errgroup.WithContext(ctx)
+	for _, f := range a.readyFn {
+		eg.Go(f)
+	}
+
+	err := eg.Wait()
+	if err != nil {
+		return fmt.Errorf("waiting for modules readiness: %w", err)
+	}
+
 	// As the following code is blocking, run it in a goroutine.
 	go func() {
-		server := &http2.Server{}
-		err := a.srv.StartH2CServer(fmt.Sprintf(":%d", a.port), server)
+		var err error
+		if a.tlsCertFile != "" && a.tlsKeyFile != "" {
+			// Start an HTTPS server (supports HTTP/2).
+			err = a.srv.StartTLS(fmt.Sprintf("%s:%d", a.bindIp, a.port), a.tlsCertFile, a.tlsKeyFile)
+		} else {
+			// Start an HTTP/2 Cleartext (non-HTTPS) server.
+			server := &http2.Server{}
+			err = a.srv.StartH2CServer(fmt.Sprintf("%s:%d", a.bindIp, a.port), server)
+		}
 		if !errors.Is(err, http.ErrServerClosed) {
 			a.logger.Fatal(err.Error())
 		}
@@ -479,26 +607,44 @@ func (a *API) Start() error {
 }
 
 // StartupMessage returns a custom startup message.
-func (a API) StartupMessage() string {
-	return fmt.Sprintf("server listening on port %d", a.port)
+func (a *Api) StartupMessage() string {
+	ip := a.bindIp
+	if a.bindIp == "" {
+		ip = "[::]"
+	}
+	return fmt.Sprintf("server started on %s:%d", ip, a.port)
 }
 
 // Stop stops the HTTP server.
-func (a API) Stop(ctx context.Context) error {
-	return a.srv.Shutdown(ctx)
-}
-
-// GraceDuration updates the expiration time of files and directories parsed by
-// the gc.GarbageCollector.
-func (a API) GraceDuration() time.Duration {
-	return a.gcGraceDuration
+func (a *Api) Stop(ctx context.Context) error {
+	for {
+		count := int64(0)
+		for _, asyncCounter := range a.asyncCounters {
+			count += asyncCounter.AsyncCount()
+		}
+		select {
+		case <-ctx.Done():
+			return a.srv.Shutdown(ctx)
+		default:
+			a.logger.Debug(fmt.Sprintf("%d asynchronous requests", count))
+			if count > 0 {
+				time.Sleep(1 * time.Second)
+				continue
+			}
+			a.logger.Debug("no more asynchronous requests, continue with shutdown")
+			err := a.srv.Shutdown(ctx)
+			if err != nil {
+				return fmt.Errorf("shutdown: %w", err)
+			}
+			return gotenberg.ErrCancelGracefulShutdownContext
+		}
+	}
 }
 
 // Interface guards.
 var (
-	_ gotenberg.Module                         = (*API)(nil)
-	_ gotenberg.Provisioner                    = (*API)(nil)
-	_ gotenberg.Validator                      = (*API)(nil)
-	_ gotenberg.App                            = (*API)(nil)
-	_ gc.GarbageCollectorGraceDurationModifier = (*API)(nil)
+	_ gotenberg.Module      = (*Api)(nil)
+	_ gotenberg.Provisioner = (*Api)(nil)
+	_ gotenberg.Validator   = (*Api)(nil)
+	_ gotenberg.App         = (*Api)(nil)
 )

pkg/modules/api/api_test.go

@@ -1,901 +0,0 @@
-package api
-
-import (
-	"bytes"
-	"context"
-	"errors"
-	"mime/multipart"
-	"net/http"
-	"net/http/httptest"
-	"os"
-	"reflect"
-	"testing"
-	"time"
-
-	"github.com/alexliesenfeld/health"
-	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
-	"github.com/labstack/echo/v4"
-	"go.uber.org/zap"
-)
-
-type ProtoModule struct {
-	descriptor func() gotenberg.ModuleDescriptor
-}
-
-func (mod ProtoModule) Descriptor() gotenberg.ModuleDescriptor {
-	return mod.descriptor()
-}
-
-type ProtoValidator struct {
-	ProtoModule
-	validate func() error
-}
-
-func (mod ProtoValidator) Validate() error {
-	return mod.validate()
-}
-
-type ProtoRouter struct {
-	ProtoValidator
-	routes func() ([]Route, error)
-}
-
-func (mod ProtoRouter) Routes() ([]Route, error) {
-	return mod.routes()
-}
-
-type ProtoMiddlewareProvider struct {
-	ProtoValidator
-	middlewares func() ([]Middleware, error)
-}
-
-func (mod ProtoMiddlewareProvider) Middlewares() ([]Middleware, error) {
-	return mod.middlewares()
-}
-
-type ProtoHealthChecker struct {
-	ProtoValidator
-	checks func() ([]health.CheckerOption, error)
-}
-
-func (mod ProtoHealthChecker) Checks() ([]health.CheckerOption, error) {
-	return mod.checks()
-}
-
-type ProtoGarbageCollectorGraceDurationIncrementer struct {
-	ProtoValidator
-	addGraceDuration func() time.Duration
-}
-
-func (mod ProtoGarbageCollectorGraceDurationIncrementer) AddGraceDuration() time.Duration {
-	return mod.addGraceDuration()
-}
-
-type ProtoLoggerProvider struct {
-	ProtoModule
-	logger func(mod gotenberg.Module) (*zap.Logger, error)
-}
-
-func (factory ProtoLoggerProvider) Logger(mod gotenberg.Module) (*zap.Logger, error) {
-	return factory.logger(mod)
-}
-
-func TestAPI_Descriptor(t *testing.T) {
-	descriptor := API{}.Descriptor()
-
-	actual := reflect.TypeOf(descriptor.New())
-	expect := reflect.TypeOf(new(API))
-
-	if actual != expect {
-		t.Errorf("expected '%s' but got '%s'", expect, actual)
-	}
-}
-
-func TestAPI_Provision(t *testing.T) {
-	for i, tc := range []struct {
-		ctx                 *gotenberg.Context
-		setEnv              func(i int)
-		expectPort          int
-		expectMiddlewares   []Middleware
-		expectGraceDuration time.Duration
-		expectErr           bool
-	}{
-		{
-			ctx: func() *gotenberg.Context {
-				fs := new(API).Descriptor().FlagSet
-				err := fs.Parse([]string{"--api-port-from-env=FOO"})
-
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: fs,
-					},
-					nil,
-				)
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				fs := new(API).Descriptor().FlagSet
-				err := fs.Parse([]string{"--api-port-from-env=PORT"})
-
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: fs,
-					},
-					nil,
-				)
-			}(),
-			setEnv: func(i int) {
-				err := os.Setenv("PORT", "")
-				if err != nil {
-					t.Fatalf("test %d: expected no error but got: %v", i, err)
-				}
-			},
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				fs := new(API).Descriptor().FlagSet
-				err := fs.Parse([]string{"--api-port-from-env=PORT"})
-
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: fs,
-					},
-					nil,
-				)
-			}(),
-			setEnv: func(i int) {
-				err := os.Setenv("PORT", "foo")
-				if err != nil {
-					t.Fatalf("test %d: expected no error but got: %v", i, err)
-				}
-			},
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				fs := new(API).Descriptor().FlagSet
-				err := fs.Parse([]string{"--api-port-from-env=PORT"})
-
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: fs,
-					},
-					nil,
-				)
-			}(),
-			setEnv: func(i int) {
-				err := os.Setenv("PORT", "1337")
-				if err != nil {
-					t.Fatalf("test %d: expected no error but got: %v", i, err)
-				}
-			},
-			expectPort: 1337,
-			expectErr:  true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoRouter }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.validate = func() error {
-					return errors.New("foo")
-				}
-				mod.routes = func() ([]Route, error) {
-					return nil, nil
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(API).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoMiddlewareProvider }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.validate = func() error {
-					return errors.New("foo")
-				}
-				mod.middlewares = func() ([]Middleware, error) {
-					return nil, nil
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(API).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoMiddlewareProvider }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.validate = func() error {
-					return nil
-				}
-				mod.middlewares = func() ([]Middleware, error) {
-					return nil, errors.New("foo")
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(API).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoRouter }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.validate = func() error {
-					return nil
-				}
-				mod.routes = func() ([]Route, error) {
-					return nil, errors.New("foo")
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(API).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoHealthChecker }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.validate = func() error {
-					return errors.New("foo")
-				}
-				mod.checks = func() ([]health.CheckerOption, error) {
-					return nil, nil
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(API).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoHealthChecker }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.validate = func() error {
-					return nil
-				}
-				mod.checks = func() ([]health.CheckerOption, error) {
-					return nil, errors.New("foo")
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(API).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-			expectErr: true,
-		},
-
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct {
-					ProtoGarbageCollectorGraceDurationIncrementer
-				}{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.validate = func() error {
-					return errors.New("foo")
-				}
-				mod.addGraceDuration = func() time.Duration {
-					return 0
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(API).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct {
-					ProtoGarbageCollectorGraceDurationIncrementer
-				}{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.validate = func() error {
-					return nil
-				}
-				mod.addGraceDuration = func() time.Duration {
-					return time.Duration(3) * time.Second
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(API).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-			expectGraceDuration: time.Duration(33) * time.Second,
-			expectErr:           true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(API).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{},
-				)
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoLoggerProvider }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.logger = func(_ gotenberg.Module) (*zap.Logger, error) {
-					return nil, errors.New("foo")
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(API).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod1 := struct{ ProtoRouter }{}
-				mod1.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod1 }}
-				}
-				mod1.validate = func() error {
-					return nil
-				}
-				mod1.routes = func() ([]Route, error) {
-					return []Route{{}}, nil
-				}
-
-				mod2 := struct{ ProtoMiddlewareProvider }{}
-				mod2.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "bar", New: func() gotenberg.Module { return mod2 }}
-				}
-				mod2.validate = func() error {
-					return nil
-				}
-				mod2.middlewares = func() ([]Middleware, error) {
-					return []Middleware{
-						{
-							Priority: VeryLowPriority,
-						},
-						{
-							Priority: LowPriority,
-						},
-						{
-							Priority: MediumPriority,
-						},
-						{
-							Priority: HighPriority,
-						},
-						{
-							Priority: VeryHighPriority,
-						},
-					}, nil
-				}
-
-				mod3 := struct{ ProtoHealthChecker }{}
-				mod3.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "baz", New: func() gotenberg.Module { return mod3 }}
-				}
-				mod3.validate = func() error {
-					return nil
-				}
-				mod3.checks = func() ([]health.CheckerOption, error) {
-					return []health.CheckerOption{health.WithDisabledAutostart()}, nil
-				}
-
-				mod4 := struct{ ProtoLoggerProvider }{}
-				mod4.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "qux", New: func() gotenberg.Module { return mod4 }}
-				}
-				mod4.logger = func(_ gotenberg.Module) (*zap.Logger, error) {
-					return zap.NewNop(), nil
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(API).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod1.Descriptor(),
-						mod2.Descriptor(),
-						mod3.Descriptor(),
-						mod4.Descriptor(),
-					},
-				)
-			}(),
-			expectMiddlewares: []Middleware{
-				{
-					Priority: VeryHighPriority,
-				},
-				{
-					Priority: HighPriority,
-				},
-				{
-					Priority: MediumPriority,
-				},
-				{
-					Priority: LowPriority,
-				},
-				{
-					Priority: VeryLowPriority,
-				},
-			},
-		},
-	} {
-		if tc.setEnv != nil {
-			tc.setEnv(i)
-		}
-
-		mod := new(API)
-		err := mod.Provision(tc.ctx)
-
-		if tc.expectPort != 0 && mod.port != tc.expectPort {
-			t.Errorf("test %d: expected port %d but got %d", i, tc.expectPort, mod.port)
-		}
-
-		if !reflect.DeepEqual(mod.externalMiddlewares, tc.expectMiddlewares) {
-			t.Errorf("test %d: expected %+v, but got: %+v", i, tc.expectMiddlewares, mod.externalMiddlewares)
-		}
-
-		if tc.expectGraceDuration != 0 && mod.gcGraceDuration != tc.expectGraceDuration {
-			t.Errorf("test %d: expected gc grace duration '%s' but got '%s'", i, tc.expectGraceDuration, mod.gcGraceDuration)
-		}
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-	}
-}
-
-func TestAPI_Validate(t *testing.T) {
-	for i, tc := range []struct {
-		port        int
-		rootPath    string
-		traceHeader string
-		routes      []Route
-		middlewares []Middleware
-		expectErr   bool
-	}{
-		{
-			port:      0,
-			expectErr: true,
-		},
-		{
-			port:      65536,
-			rootPath:  "foo",
-			expectErr: true,
-		},
-		{
-			port:        10,
-			rootPath:    "/foo/",
-			traceHeader: "foo",
-			routes: []Route{
-				{
-					Path: "",
-				},
-			},
-			expectErr: true,
-		},
-		{
-			port:        10,
-			rootPath:    "/foo/",
-			traceHeader: "foo",
-			routes: []Route{
-				{
-					Path: "foo",
-				},
-			},
-			expectErr: true,
-		},
-		{
-			port:        10,
-			rootPath:    "/foo/",
-			traceHeader: "foo",
-			routes: []Route{
-				{
-					Path:        "/foo",
-					IsMultipart: true,
-				},
-			},
-			expectErr: true,
-		},
-		{
-			port:        10,
-			rootPath:    "/foo/",
-			traceHeader: "foo",
-			routes: []Route{
-				{
-					Path:        "/forms/foo",
-					IsMultipart: true,
-				},
-			},
-			expectErr: true,
-		},
-		{
-			port:        10,
-			rootPath:    "/foo/",
-			traceHeader: "foo",
-			routes: []Route{
-				{
-					Method:      http.MethodPost,
-					Path:        "/forms/foo",
-					IsMultipart: true,
-				},
-			},
-			expectErr: true,
-		},
-		{
-			port:        10,
-			rootPath:    "/foo/",
-			traceHeader: "foo",
-			routes: []Route{
-				{
-					Method:  http.MethodPost,
-					Path:    "/foo",
-					Handler: func(_ echo.Context) error { return nil },
-				},
-				{
-					Method:  http.MethodPost,
-					Path:    "/foo",
-					Handler: func(_ echo.Context) error { return nil },
-				},
-			},
-			expectErr: true,
-		},
-		{
-			port:        10,
-			rootPath:    "/foo/",
-			traceHeader: "foo",
-			middlewares: []Middleware{
-				{
-					Priority: HighPriority,
-				},
-			},
-			expectErr: true,
-		},
-		{
-			port:        10,
-			rootPath:    "/foo/",
-			traceHeader: "foo",
-			routes: []Route{
-				{
-					Method:  http.MethodGet,
-					Path:    "/foo",
-					Handler: func(_ echo.Context) error { return nil },
-				},
-			},
-			middlewares: []Middleware{
-				{
-					Priority: HighPriority,
-					Handler: func() echo.MiddlewareFunc {
-						return func(next echo.HandlerFunc) echo.HandlerFunc {
-							return func(c echo.Context) error {
-								return next(c)
-							}
-						}
-					}(),
-				},
-			},
-		},
-	} {
-		mod := API{
-			port:                tc.port,
-			rootPath:            tc.rootPath,
-			traceHeader:         tc.traceHeader,
-			routes:              tc.routes,
-			externalMiddlewares: tc.middlewares,
-		}
-
-		err := mod.Validate()
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-	}
-}
-
-func TestAPI_Start(t *testing.T) {
-	mod := new(API)
-	mod.port = 3000
-	mod.rootPath = "/"
-	mod.disableHealthCheckLogging = true
-	mod.routes = []Route{
-		{
-			Method:         http.MethodPost,
-			Path:           "/forms/foo",
-			IsMultipart:    true,
-			DisableLogging: true,
-			Handler: func(c echo.Context) error {
-				ctx := c.Get("context").(*Context)
-				ctx.outputPaths = []string{
-					"/tests/test/testdata/api/sample1.txt",
-				}
-
-				return nil
-			},
-		},
-		{
-			Method:      http.MethodPost,
-			Path:        "/forms/bar",
-			IsMultipart: true,
-			Handler:     func(_ echo.Context) error { return errors.New("foo") },
-		},
-	}
-	mod.externalMiddlewares = []Middleware{
-		{
-			Stack: PreRouterStack,
-			Handler: func() echo.MiddlewareFunc {
-				return func(next echo.HandlerFunc) echo.HandlerFunc {
-					return func(c echo.Context) error {
-						return next(c)
-					}
-				}
-			}(),
-		},
-		{
-			Stack: MultipartStack,
-			Handler: func() echo.MiddlewareFunc {
-				return func(next echo.HandlerFunc) echo.HandlerFunc {
-					return func(c echo.Context) error {
-						return next(c)
-					}
-				}
-			}(),
-		},
-		{
-			Stack: DefaultStack,
-			Handler: func() echo.MiddlewareFunc {
-				return func(next echo.HandlerFunc) echo.HandlerFunc {
-					return func(c echo.Context) error {
-						return next(c)
-					}
-				}
-			}(),
-		},
-		{
-			Handler: func() echo.MiddlewareFunc {
-				return func(next echo.HandlerFunc) echo.HandlerFunc {
-					return func(c echo.Context) error {
-						return next(c)
-					}
-				}
-			}(),
-		},
-	}
-	mod.logger = zap.NewNop()
-
-	err := mod.Start()
-	if err != nil {
-		t.Fatalf("expected no error but got: %v", err)
-	}
-
-	// health request.
-	recorder := httptest.NewRecorder()
-	healthRequest := httptest.NewRequest(http.MethodGet, "/health", nil)
-
-	mod.srv.ServeHTTP(recorder, healthRequest)
-	if recorder.Code != http.StatusOK {
-		t.Errorf("expected %d status code but got %d", http.StatusOK, recorder.Code)
-	}
-
-	// "multipart/form-data" request.
-	multipartRequest := func(URL string) *http.Request {
-		body := &bytes.Buffer{}
-
-		writer := multipart.NewWriter(body)
-
-		defer func() {
-			err := writer.Close()
-			if err != nil {
-				t.Fatalf("expected no error but got: %v", err)
-			}
-		}()
-
-		err := writer.WriteField("foo", "foo")
-		if err != nil {
-			t.Fatalf("expected no error but got: %v", err)
-		}
-
-		part, err := writer.CreateFormFile("foo.txt", "foo.txt")
-		if err != nil {
-			t.Fatalf("expected no error but got: %v", err)
-		}
-
-		_, err = part.Write([]byte("foo"))
-		if err != nil {
-			t.Fatalf("expected no error but got: %v", err)
-		}
-
-		req := httptest.NewRequest(http.MethodPost, URL, body)
-		req.Header.Set(echo.HeaderContentType, writer.FormDataContentType())
-
-		return req
-	}
-
-	recorder = httptest.NewRecorder()
-	mod.srv.ServeHTTP(recorder, multipartRequest("/forms/foo"))
-
-	if recorder.Code != http.StatusOK {
-		t.Errorf("expected %d status code but got %d", http.StatusOK, recorder.Code)
-	}
-
-	recorder = httptest.NewRecorder()
-	mod.srv.ServeHTTP(recorder, multipartRequest("/forms/bar"))
-
-	if recorder.Code != http.StatusInternalServerError {
-		t.Errorf("expected %d status code but got %d", http.StatusInternalServerError, recorder.Code)
-	}
-
-	err = mod.srv.Shutdown(context.TODO())
-	if err != nil {
-		t.Errorf("expected no error but got: %v", err)
-	}
-}
-
-func TestAPI_StartupMessage(t *testing.T) {
-	mod := API{
-		port: 3000,
-	}
-
-	actual := mod.StartupMessage()
-	expect := "server listening on port 3000"
-
-	if actual != expect {
-		t.Errorf("expected '%s' but got '%s'", expect, actual)
-	}
-}
-
-func TestAPI_Stop(t *testing.T) {
-	mod := API{
-		port: 3000,
-		routes: []Route{
-			{
-				Method:  http.MethodGet,
-				Path:    "/foo",
-				Handler: func(_ echo.Context) error { return nil },
-			},
-		},
-		logger: zap.NewNop(),
-	}
-
-	err := mod.Start()
-	if err != nil {
-		t.Fatalf("expected no error but got: %v", err)
-	}
-
-	err = mod.Stop(context.TODO())
-	if err != nil {
-		t.Errorf("expected no error but got: %v", err)
-	}
-}
-
-func TestAPI_GraceDuration(t *testing.T) {
-	mod := API{
-		gcGraceDuration: time.Duration(3) * time.Second,
-	}
-
-	expect := time.Duration(3) * time.Second
-	actual := mod.GraceDuration()
-
-	if actual != expect {
-		t.Errorf("expected '%s' but got '%s'", expect, actual)
-	}
-}
-
-// Interface guards.
-var (
-	_ gotenberg.Module                         = (*ProtoModule)(nil)
-	_ gotenberg.Validator                      = (*ProtoValidator)(nil)
-	_ gotenberg.Module                         = (*ProtoValidator)(nil)
-	_ Router                                   = (*ProtoRouter)(nil)
-	_ gotenberg.Module                         = (*ProtoRouter)(nil)
-	_ gotenberg.Validator                      = (*ProtoRouter)(nil)
-	_ MiddlewareProvider                       = (*ProtoMiddlewareProvider)(nil)
-	_ gotenberg.Module                         = (*ProtoMiddlewareProvider)(nil)
-	_ gotenberg.Validator                      = (*ProtoMiddlewareProvider)(nil)
-	_ HealthChecker                            = (*ProtoHealthChecker)(nil)
-	_ gotenberg.Module                         = (*ProtoHealthChecker)(nil)
-	_ gotenberg.Validator                      = (*ProtoHealthChecker)(nil)
-	_ GarbageCollectorGraceDurationIncrementer = (*ProtoGarbageCollectorGraceDurationIncrementer)(nil)
-	_ gotenberg.Module                         = (*ProtoGarbageCollectorGraceDurationIncrementer)(nil)
-	_ gotenberg.Validator                      = (*ProtoGarbageCollectorGraceDurationIncrementer)(nil)
-	_ gotenberg.LoggerProvider                 = (*ProtoLoggerProvider)(nil)
-	_ gotenberg.Module                         = (*ProtoLoggerProvider)(nil)
-)

pkg/modules/api/context.go

@@ -1,27 +1,29 @@
 package api
 
 import (
-	"compress/flate"
 	"context"
+	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
+	"mime"
 	"mime/multipart"
 	"net/http"
 	"os"
 	"path/filepath"
 	"strings"
+	"sync/atomic"
 	"time"
-	"unicode"
 
 	"github.com/google/uuid"
-	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
+	"github.com/hashicorp/go-retryablehttp"
 	"github.com/labstack/echo/v4"
-	"github.com/mholt/archiver/v3"
+	"github.com/mholt/archives"
 	"go.uber.org/zap"
-	"golang.org/x/text/runes"
-	"golang.org/x/text/transform"
+	"golang.org/x/sync/errgroup"
 	"golang.org/x/text/unicode/norm"
+
+	"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
 )
 
 var (
@@ -36,27 +38,76 @@ var (
 
 // Context is the request context for a "multipart/form-data" requests.
 type Context struct {
-	dirPath string
-	values  map[string][]string
-	files   map[string]string
-
+	dirPath     string
+	values      map[string][]string
+	files       map[string]string
 	outputPaths []string
+	cancelled   bool
 
-	cancelled bool
-	logger    *zap.Logger
-	echoCtx   echo.Context
+	logger     *zap.Logger
+	echoCtx    echo.Context
+	mkdirAll   gotenberg.MkdirAll
+	pathRename gotenberg.PathRename
 	context.Context
 }
 
-// newContext returns a Context by parsing a "multipart/form-data" request.
-func newContext(echoCtx echo.Context, logger *zap.Logger, timeout time.Duration) (*Context, context.CancelFunc, error) {
+type trackingReader struct {
+	R            io.Reader
+	AddReadBytes func(n int64) error
+}
+
+func (t *trackingReader) Read(p []byte) (int, error) {
+	n, err := t.R.Read(p)
+	if n > 0 {
+		errAddRead := t.AddReadBytes(int64(n))
+		if errAddRead != nil {
+			return n, fmt.Errorf("add read bytes: %w", errAddRead)
+		}
+	}
+	if err != nil {
+		// It's a common practice in Go to return io.EOF unwrapped to signal
+		// the end of a data stream. Wrapping it can lead to unexpected
+		// behavior in standard library functions.
+		return n, err
+	}
+	return n, nil
+}
+
+type downloadFrom struct {
+	// Url is the URL to download a file from.
+	Url string `json:"url"`
+
+	// ExtraHttpHeaders are the HTTP headers to send alongside.
+	ExtraHttpHeaders map[string]string `json:"extraHttpHeaders"`
+}
+
+// newContext returns a [Context] by parsing a "multipart/form-data" request.
+func newContext(echoCtx echo.Context, logger *zap.Logger, fs *gotenberg.FileSystem, timeout time.Duration, bodyLimit int64, downloadFromCfg downloadFromConfig, traceHeader, trace string) (*Context, context.CancelFunc, error) {
 	processCtx, processCancel := context.WithTimeout(context.Background(), timeout)
 
+	// We want to make sure the multipart/form-data does not exceed a given
+	// limit. We consider: form fields (keys, values, files) and files
+	// downloaded remotely ("download from" feature).
+	var totalBytesRead atomic.Int64
+
+	addReadBytes := func(n int64) error {
+		newTotal := totalBytesRead.Add(n)
+		if bodyLimit != 0 && newTotal > bodyLimit {
+			return WrapError(
+				fmt.Errorf("body limit reached (> %d)", bodyLimit),
+				NewSentinelHttpError(http.StatusRequestEntityTooLarge, http.StatusText(http.StatusRequestEntityTooLarge)),
+			)
+		}
+		return nil
+	}
+
 	ctx := &Context{
 		outputPaths: make([]string, 0),
 		cancelled:   false,
 		logger:      logger,
 		echoCtx:     echoCtx,
+		mkdirAll:    new(gotenberg.OsMkdirAll),
+		pathRename:  new(gotenberg.OsPathRename),
 		Context:     processCtx,
 	}
 
@@ -81,39 +132,51 @@ func newContext(echoCtx echo.Context, logger *zap.Logger, timeout time.Duration)
 				return
 			}
 
-			ctx.logger.Debug(fmt.Sprintf("'%s' removed", ctx.dirPath))
+			ctx.logger.Debug(fmt.Sprintf("'%s' context's working directory removed", ctx.dirPath))
 			ctx.cancelled = true
 		}
 	}()
 
 	form, err := echoCtx.MultipartForm()
 	if err != nil {
-
 		if errors.Is(err, http.ErrNotMultipart) {
 			return nil, cancel, WrapError(
 				fmt.Errorf("get multipart form: %w", err),
-				NewSentinelHTTPError(http.StatusUnsupportedMediaType, "Invalid 'Content-Type' header value: want 'multipart/form-data'"),
+				NewSentinelHttpError(http.StatusUnsupportedMediaType, "Invalid 'Content-Type' header value: want 'multipart/form-data'"),
 			)
 		}
 
 		if errors.Is(err, http.ErrMissingBoundary) {
 			return nil, cancel, WrapError(
 				fmt.Errorf("get multipart form: %w", err),
-				NewSentinelHTTPError(http.StatusUnsupportedMediaType, "Invalid 'Content-Type' header value: no boundary"),
+				NewSentinelHttpError(http.StatusUnsupportedMediaType, "Invalid 'Content-Type' header value: no boundary"),
 			)
 		}
 
 		if strings.Contains(err.Error(), io.EOF.Error()) {
 			return nil, cancel, WrapError(
 				fmt.Errorf("get multipart form: %w", err),
-				NewSentinelHTTPError(http.StatusBadRequest, "Malformed body: it does not match the 'Content-Type' header boundaries"),
+				NewSentinelHttpError(http.StatusBadRequest, "Malformed body: it does not match the 'Content-Type' header boundaries"),
 			)
 		}
 
 		return nil, cancel, fmt.Errorf("get multipart form: %w", err)
 	}
 
-	dirPath, err := gotenberg.MkdirAll()
+	// This will ensure we do not exceed the body limit.
+	var formValuesSize int64
+	for key, valArray := range form.Value {
+		formValuesSize += int64(len(key))
+		for _, val := range valArray {
+			formValuesSize += int64(len(val))
+		}
+	}
+	err = addReadBytes(formValuesSize)
+	if err != nil {
+		return nil, cancel, fmt.Errorf("add read bytes: %w", err)
+	}
+
+	dirPath, err := fs.MkdirAll()
 	if err != nil {
 		return nil, cancel, fmt.Errorf("create working directory: %w", err)
 	}
@@ -122,16 +185,151 @@ func newContext(echoCtx echo.Context, logger *zap.Logger, timeout time.Duration)
 	ctx.values = form.Value
 	ctx.files = make(map[string]string)
 
-	copyToDisk := func(fh *multipart.FileHeader) error {
-		// Avoid directory traversal and normalize filename.
-		// See https://github.com/gotenberg/gotenberg/issues/104.
-		t := transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC)
-
-		filename, _, err := transform.String(t, filepath.Base(fh.Filename))
+	// First, try to download files listed in the "downloadFrom" form field, if
+	// any.
+	raw, ok := ctx.values["downloadFrom"]
+	if !downloadFromCfg.disable && ok {
+		var dls []downloadFrom
+		err = json.Unmarshal([]byte(raw[0]), &dls)
 		if err != nil {
-			return fmt.Errorf("transform filename: %w", err)
+			return nil, cancel, WrapError(
+				fmt.Errorf("unmarshal json: %w", err),
+				NewSentinelHttpError(http.StatusBadRequest, fmt.Sprintf("Invalid 'downloadFrom' form field value: %s", err)),
+			)
 		}
 
+		eg, _ := errgroup.WithContext(ctx)
+		for i, dl := range dls {
+			eg.Go(func() error {
+				deadline, ok := ctx.Deadline()
+				if !ok {
+					// Should not happen, as context is created with a timeout.
+					return errors.New("context has no deadline")
+				}
+
+				if strings.TrimSpace(dl.Url) == "" {
+					return WrapError(
+						errors.New("empty download from URL"),
+						NewSentinelHttpError(http.StatusBadRequest, fmt.Sprintf("Invalid 'downloadFrom' form field entry %d: URL must be set", i)),
+					)
+				}
+
+				err := gotenberg.FilterDeadline(downloadFromCfg.allowList, downloadFromCfg.denyList, dl.Url, deadline)
+				if err != nil {
+					return fmt.Errorf("filter URL: %w", err)
+				}
+
+				logger.Debug(fmt.Sprintf("download file from '%s'", dl.Url))
+
+				req, err := retryablehttp.NewRequest(http.MethodGet, dl.Url, nil)
+				if err != nil {
+					return fmt.Errorf("create request to '%s': %w", dl.Url, err)
+				}
+
+				req.Header.Set("User-Agent", "Gotenberg")
+				for key, value := range dl.ExtraHttpHeaders {
+					req.Header.Set(key, value)
+				}
+				req.Header.Set(traceHeader, trace)
+
+				client := &retryablehttp.Client{
+					HTTPClient: &http.Client{
+						Timeout: time.Until(deadline),
+					},
+					RetryMax:     downloadFromCfg.maxRetry,
+					RetryWaitMin: time.Duration(1) * time.Second,
+					RetryWaitMax: time.Until(deadline),
+					Logger:       gotenberg.NewLeveledLogger(logger),
+					CheckRetry:   retryablehttp.DefaultRetryPolicy,
+					Backoff:      retryablehttp.DefaultBackoff,
+				}
+
+				resp, err := client.Do(req)
+				if err != nil {
+					return WrapError(
+						fmt.Errorf("download file from to '%s': %w", dl.Url, err),
+						NewSentinelHttpError(http.StatusBadRequest, fmt.Sprintf("Unable to download file from '%s': %s", dl.Url, err)),
+					)
+				}
+				defer func() {
+					err := resp.Body.Close()
+					if err != nil {
+						logger.Error(fmt.Sprintf("close response body from '%s': %s", dl.Url, err))
+					}
+				}()
+
+				if resp.StatusCode != http.StatusOK {
+					return WrapError(
+						fmt.Errorf("download file from to '%s': got status: '%s'", dl.Url, resp.Status),
+						NewSentinelHttpError(http.StatusBadRequest, fmt.Sprintf("Unable to download file from '%s': got status: '%s'", dl.Url, resp.Status)),
+					)
+				}
+
+				contentDisposition := resp.Header.Get("Content-Disposition")
+				if contentDisposition == "" {
+					return WrapError(
+						fmt.Errorf("no 'Content-Disposition' header from '%s'", dl.Url),
+						NewSentinelHttpError(http.StatusBadRequest, fmt.Sprintf("No 'Content-Disposition' header from '%s'", dl.Url)),
+					)
+				}
+
+				// FIXME: the implementation of this method might not be
+				//  complete, as it fails to parse an empty mediatype.
+				//  See: https://github.com/golang/go/issues/69551.
+				_, params, err := mime.ParseMediaType(contentDisposition)
+				if err != nil {
+					return WrapError(
+						fmt.Errorf("parse 'Content-Disposition' header '%s' from '%s': %w", contentDisposition, dl.Url, err),
+						NewSentinelHttpError(http.StatusBadRequest, fmt.Sprintf("Invalid 'Content-Disposition' header '%s' from '%s': %s", contentDisposition, dl.Url, err)),
+					)
+				}
+
+				filename, ok := params["filename"]
+				if !ok {
+					return WrapError(
+						fmt.Errorf("get filename from 'Content-Disposition' header '%s' from '%s'", contentDisposition, dl.Url),
+						NewSentinelHttpError(http.StatusBadRequest, fmt.Sprintf("Invalid 'Content-Disposition' header '%s' from '%s': no filename", contentDisposition, dl.Url)),
+					)
+				}
+
+				// Avoid directory traversal and make sure filename characters are
+				// normalized.
+				// See: https://github.com/gotenberg/gotenberg/issues/662.
+				filename = norm.NFC.String(filepath.Base(filename))
+				path := fmt.Sprintf("%s/%s", ctx.dirPath, filename)
+
+				out, err := os.Create(path)
+				if err != nil {
+					return fmt.Errorf("create local file: %w", err)
+				}
+				defer func() {
+					err := out.Close()
+					if err != nil {
+						logger.Error(fmt.Sprintf("close local file: %s", err))
+					}
+				}()
+
+				// This will ensure we do not exceed the body limit.
+				reader := &trackingReader{R: resp.Body, AddReadBytes: addReadBytes}
+
+				_, err = io.Copy(out, reader)
+				if err != nil {
+					return fmt.Errorf("copy downloaded file from '%s' to local file: %w", dl.Url, err)
+				}
+
+				ctx.files[filename] = path
+
+				return nil
+			})
+		}
+
+		err = eg.Wait()
+		if err != nil {
+			return ctx, cancel, err
+		}
+	}
+
+	copyToDisk := func(fh *multipart.FileHeader) error {
 		in, err := fh.Open()
 		if err != nil {
 			return fmt.Errorf("open multipart file: %w", err)
@@ -144,13 +342,19 @@ func newContext(echoCtx echo.Context, logger *zap.Logger, timeout time.Duration)
 			}
 		}()
 
+		// This will ensure we do not exceed the body limit.
+		reader := &trackingReader{R: in, AddReadBytes: addReadBytes}
+
+		// Avoid directory traversal and make sure filename characters are
+		// normalized.
+		// See: https://github.com/gotenberg/gotenberg/issues/662.
+		filename := norm.NFC.String(filepath.Base(fh.Filename))
 		path := fmt.Sprintf("%s/%s", ctx.dirPath, filename)
 
 		out, err := os.Create(path)
 		if err != nil {
 			return fmt.Errorf("create local file: %w", err)
 		}
-
 		defer func() {
 			err := out.Close()
 			if err != nil {
@@ -158,7 +362,7 @@ func newContext(echoCtx echo.Context, logger *zap.Logger, timeout time.Duration)
 			}
 		}()
 
-		_, err = io.Copy(out, in)
+		_, err = io.Copy(out, reader)
 		if err != nil {
 			return fmt.Errorf("copy multipart file to local file: %w", err)
 		}
@@ -168,29 +372,30 @@ func newContext(echoCtx echo.Context, logger *zap.Logger, timeout time.Duration)
 		return nil
 	}
 
+	// Then, copy the form files, if any.
 	for _, files := range form.File {
 		for _, fh := range files {
 			err = copyToDisk(fh)
-
 			if err != nil {
 				return ctx, cancel, fmt.Errorf("copy to disk: %w", err)
 			}
 		}
 	}
 
-	ctx.Log().Debug(fmt.Sprintf("form data values: %+v", ctx.values))
-	ctx.Log().Debug(fmt.Sprintf("form data files: %+v", ctx.files))
+	ctx.Log().Debug(fmt.Sprintf("form fields: %+v", ctx.values))
+	ctx.Log().Debug(fmt.Sprintf("form files: %+v", ctx.files))
+	ctx.Log().Debug(fmt.Sprintf("total bytes: %d", totalBytesRead.Load()))
 
 	return ctx, cancel, err
 }
 
-// Request returns the http.Request.
-func (ctx Context) Request() *http.Request {
+// Request returns the [http.Request].
+func (ctx *Context) Request() *http.Request {
 	return ctx.echoCtx.Request()
 }
 
-// FormData return a FormData.
-func (ctx Context) FormData() *FormData {
+// FormData return a [FormData].
+func (ctx *Context) FormData() *FormData {
 	return &FormData{
 		values: ctx.values,
 		files:  ctx.files,
@@ -198,10 +403,39 @@ func (ctx Context) FormData() *FormData {
 	}
 }
 
-// GeneratePath generates a path within the context's working directory. It
-// does not create a file.
-func (ctx Context) GeneratePath(extension string) string {
-	return fmt.Sprintf("%s/%s%s", ctx.dirPath, uuid.New(), extension)
+// GeneratePath generates a path within the context's working directory.
+// It generates a new UUID-based filename. It does not create a file.
+func (ctx *Context) GeneratePath(extension string) string {
+	return fmt.Sprintf("%s/%s%s", ctx.dirPath, uuid.New().String(), extension)
+}
+
+// GeneratePathFromFilename generates a path within the context's working
+// directory, using the given filename (with extension). It does not create
+// a file.
+func (ctx *Context) GeneratePathFromFilename(filename string) string {
+	return fmt.Sprintf("%s/%s", ctx.dirPath, filename)
+}
+
+// CreateSubDirectory creates a subdirectory within the context's working
+// directory.
+func (ctx *Context) CreateSubDirectory(dirName string) (string, error) {
+	path := fmt.Sprintf("%s/%s", ctx.dirPath, dirName)
+	err := ctx.mkdirAll.MkdirAll(path, 0o755)
+	if err != nil {
+		return "", fmt.Errorf("create sub-directory %s: %w", path, err)
+	}
+	return path, nil
+}
+
+// Rename is just a wrapper around [os.Rename], as we need to mock this
+// behavior in our tests.
+func (ctx *Context) Rename(oldpath, newpath string) error {
+	ctx.Log().Debug(fmt.Sprintf("rename %s to %s", oldpath, newpath))
+	err := ctx.pathRename.Rename(oldpath, newpath)
+	if err != nil {
+		return fmt.Errorf("rename path: %w", err)
+	}
+	return nil
 }
 
 // AddOutputPaths adds the given paths. Those paths will be used later to build
@@ -222,14 +456,14 @@ func (ctx *Context) AddOutputPaths(paths ...string) error {
 	return nil
 }
 
-// Log returns the context zap.Logger.
-func (ctx Context) Log() *zap.Logger {
+// Log returns the context [zap.Logger].
+func (ctx *Context) Log() *zap.Logger {
 	return ctx.logger
 }
 
 // BuildOutputFile builds the output file according to the output paths
 // registered in the context. If many output paths, an archive is created.
-func (ctx Context) BuildOutputFile() (string, error) {
+func (ctx *Context) BuildOutputFile() (string, error) {
 	if ctx.cancelled {
 		return "", ErrContextAlreadyClosed
 	}
@@ -240,22 +474,33 @@ func (ctx Context) BuildOutputFile() (string, error) {
 
 	if len(ctx.outputPaths) == 1 {
 		ctx.logger.Debug(fmt.Sprintf("only one output file '%s', skip archive creation", ctx.outputPaths[0]))
-
 		return ctx.outputPaths[0], nil
 	}
 
-	z := archiver.Zip{
-		CompressionLevel:       flate.DefaultCompression,
-		MkdirAll:               true,
-		SelectiveCompression:   true,
-		ContinueOnError:        false,
-		OverwriteExisting:      false,
-		ImplicitTopLevelFolder: false,
+	filesInfo, err := archives.FilesFromDisk(ctx.Context, nil, func() map[string]string {
+		f := make(map[string]string)
+		for _, outputPath := range ctx.outputPaths {
+			f[outputPath] = ""
+		}
+		return f
+	}())
+	if err != nil {
+		return "", fmt.Errorf("create files info: %w", err)
 	}
 
 	archivePath := ctx.GeneratePath(".zip")
+	out, err := os.Create(archivePath)
+	if err != nil {
+		return "", fmt.Errorf("create zip file: %w", err)
+	}
+	defer func(out *os.File) {
+		err := out.Close()
+		if err != nil {
+			ctx.logger.Error(fmt.Sprintf("close zip file: %s", err))
+		}
+	}(out)
 
-	err := z.Archive(ctx.outputPaths, archivePath)
+	err = archives.Zip{}.Archive(ctx.Context, out, filesInfo)
 	if err != nil {
 		return "", fmt.Errorf("archive output files: %w", err)
 	}
@@ -267,7 +512,7 @@ func (ctx Context) BuildOutputFile() (string, error) {
 
 // OutputFilename returns the filename based on the given output path or the
 // "Gotenberg-Output-Filename" header's value.
-func (ctx Context) OutputFilename(outputPath string) string {
+func (ctx *Context) OutputFilename(outputPath string) string {
 	filename := ctx.echoCtx.Request().Header.Get("Gotenberg-Output-Filename")
 
 	if filename == "" {

pkg/modules/api/context_test.go

@@ -1,336 +0,0 @@
-package api
-
-import (
-	"bytes"
-	"errors"
-	"mime/multipart"
-	"net/http"
-	"net/http/httptest"
-	"os"
-	"reflect"
-	"strings"
-	"testing"
-	"time"
-
-	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
-	"github.com/labstack/echo/v4"
-	"go.uber.org/zap"
-)
-
-func TestNewContext(t *testing.T) {
-	for i, tc := range []struct {
-		request          *http.Request
-		expectErr        bool
-		expectHTTPErr    bool
-		expectHTTPStatus int
-	}{
-		{
-			request:          httptest.NewRequest(http.MethodPost, "/", nil),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusUnsupportedMediaType,
-		},
-		{
-			request: func() *http.Request {
-				req := httptest.NewRequest(http.MethodPost, "/", nil)
-				req.Header.Set(echo.HeaderContentType, echo.MIMEMultipartForm)
-
-				return req
-			}(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusUnsupportedMediaType,
-		},
-		{
-			request: func() *http.Request {
-				body := &bytes.Buffer{}
-
-				writer := multipart.NewWriter(body)
-
-				defer func() {
-					err := writer.Close()
-					if err != nil {
-						t.Fatalf("expected no error but got: %v", err)
-					}
-				}()
-
-				err := writer.WriteField("foo", "foo")
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				req := httptest.NewRequest(http.MethodPost, "/", nil)
-				req.Header.Set(echo.HeaderContentType, writer.FormDataContentType())
-
-				return req
-			}(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			request: func() *http.Request {
-				body := &bytes.Buffer{}
-
-				writer := multipart.NewWriter(body)
-
-				defer func() {
-					err := writer.Close()
-					if err != nil {
-						t.Fatalf("expected no error but got: %v", err)
-					}
-				}()
-
-				err := writer.WriteField("foo", "foo")
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				part, err := writer.CreateFormFile("foo.txt", "foo.txt")
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				_, err = part.Write([]byte("foo"))
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				req := httptest.NewRequest(http.MethodPost, "/", body)
-				req.Header.Set(echo.HeaderContentType, writer.FormDataContentType())
-
-				return req
-			}(),
-		},
-	} {
-		handler := func(c echo.Context) error {
-			_, cancel, err := newContext(c, zap.NewNop(), time.Duration(10)*time.Second)
-			defer cancel()
-			// Context already cancelled.
-			defer cancel()
-
-			if err != nil {
-				return err
-			}
-
-			return nil
-		}
-
-		recorder := httptest.NewRecorder()
-
-		srv := echo.New()
-		srv.HideBanner = true
-		srv.HidePort = true
-
-		c := srv.NewContext(tc.request, recorder)
-		err := handler(c)
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-
-		var httpErr HTTPError
-		isHTTPErr := errors.As(err, &httpErr)
-
-		if tc.expectHTTPErr && !isHTTPErr {
-			t.Errorf("test %d: expected HTTP error but got: %v", i, err)
-		}
-
-		if !tc.expectHTTPErr && isHTTPErr {
-			t.Errorf("test %d: expected no HTTP error but got one: %v", i, httpErr)
-		}
-
-		if err != nil && tc.expectHTTPErr && isHTTPErr {
-			status, _ := httpErr.HTTPError()
-			if status != tc.expectHTTPStatus {
-				t.Errorf("test %d: expected %d HTTP status code but got %d", i, tc.expectHTTPStatus, status)
-			}
-		}
-	}
-}
-
-func TestContext_Request(t *testing.T) {
-	request := httptest.NewRequest(http.MethodPost, "/", nil)
-	recorder := httptest.NewRecorder()
-	c := echo.New().NewContext(request, recorder)
-
-	ctx := Context{
-		echoCtx: c,
-	}
-
-	if !reflect.DeepEqual(ctx.Request(), c.Request()) {
-		t.Errorf("expected %v but got %v", ctx.Request(), c.Request())
-	}
-}
-
-func TestContext_FormData(t *testing.T) {
-	ctx := Context{
-		values: map[string][]string{
-			"foo": {"foo"},
-		},
-		files: map[string]string{
-			"foo.txt": "/foo.txt",
-		},
-	}
-
-	actual := ctx.FormData()
-	expect := &FormData{
-		values: ctx.values,
-		files:  ctx.files,
-	}
-
-	if !reflect.DeepEqual(actual, expect) {
-		t.Errorf("expected %+v but got %+v", expect, actual)
-	}
-}
-
-func TestContext_GeneratePath(t *testing.T) {
-	ctx := Context{
-		dirPath: "/foo",
-	}
-
-	path := ctx.GeneratePath(".pdf")
-
-	if !strings.HasPrefix(path, ctx.dirPath) {
-		t.Errorf("expected '%s' to start with '%s'", path, ctx.dirPath)
-	}
-}
-
-func TestContext_AddOutputPaths(t *testing.T) {
-	for i, tc := range []struct {
-		ctx         *Context
-		path        string
-		expectCount int
-		expectErr   bool
-	}{
-		{
-			ctx:       &Context{cancelled: true},
-			expectErr: true,
-		},
-		{
-			ctx:       &Context{dirPath: "/foo"},
-			path:      "/bar/foo.txt",
-			expectErr: true,
-		},
-		{
-			ctx:         &Context{dirPath: "/foo"},
-			path:        "/foo/foo.txt",
-			expectCount: 1,
-		},
-	} {
-		err := tc.ctx.AddOutputPaths(tc.path)
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-
-		if len(tc.ctx.outputPaths) != tc.expectCount {
-			t.Errorf("test %d: expected %d output paths but got %d", i, tc.expectCount, len(tc.ctx.outputPaths))
-		}
-	}
-}
-
-func TestContext_Log(t *testing.T) {
-	expect := zap.NewNop()
-	ctx := Context{logger: expect}
-	actual := ctx.Log()
-
-	if !reflect.DeepEqual(actual, expect) {
-		t.Errorf("expected %v but got %v", expect, actual)
-	}
-}
-
-func TestContext_BuildOutputFile(t *testing.T) {
-	for i, tc := range []struct {
-		ctx       *Context
-		expectErr bool
-	}{
-		{
-			ctx:       &Context{cancelled: true},
-			expectErr: true,
-		},
-		{
-			ctx:       &Context{},
-			expectErr: true,
-		},
-		{
-			ctx: &Context{outputPaths: []string{"foo.txt"}},
-		},
-		{
-			ctx:       &Context{outputPaths: []string{"foo.txt", "foo.pdf"}},
-			expectErr: true,
-		},
-		{
-			ctx: &Context{
-				outputPaths: []string{
-					"/tests/test/testdata/api/sample1.txt",
-					"/tests/test/testdata/api/sample1.txt",
-				},
-			},
-		},
-	} {
-		dirPath, err := gotenberg.MkdirAll()
-		if err != nil {
-			t.Fatalf("%d: expected no erro but got: %v", i, err)
-		}
-
-		tc.ctx.dirPath = dirPath
-		tc.ctx.logger = zap.NewNop()
-
-		_, err = tc.ctx.BuildOutputFile()
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-
-		err = os.RemoveAll(dirPath)
-		if err != nil {
-			t.Fatalf("%d: expected no erro but got: %v", i, err)
-		}
-	}
-}
-
-func TestContext_OutputFilename(t *testing.T) {
-	for i, tc := range []struct {
-		ctx                  *Context
-		outputPath           string
-		expectOutputFilename string
-	}{
-		{
-			ctx: func() *Context {
-				c := echo.New().NewContext(httptest.NewRequest(http.MethodGet, "/foo", nil), nil)
-				c.Request().Header.Set("Gotenberg-Output-Filename", "foo")
-
-				return &Context{echoCtx: c}
-			}(),
-			outputPath:           "/foo/bar.txt",
-			expectOutputFilename: "foo.txt",
-		},
-		{
-			ctx: func() *Context {
-				c := echo.New().NewContext(httptest.NewRequest(http.MethodGet, "/foo", nil), nil)
-				return &Context{echoCtx: c}
-			}(),
-			outputPath:           "/foo/foo.txt",
-			expectOutputFilename: "foo.txt",
-		},
-	} {
-		actual := tc.ctx.OutputFilename(tc.outputPath)
-
-		if actual != tc.expectOutputFilename {
-			t.Errorf("test %d: expected '%s' but got '%s'", i, tc.expectOutputFilename, actual)
-		}
-	}
-}

pkg/modules/api/doc.go

@@ -1,3 +1,3 @@
-// Package api provides a module which is an HTTP server. Other modules may
+// Package api provides a module, which is an HTTP server. Other modules may
 // add multipart/form-data routes, middlewares, and health checks.
 package api

pkg/modules/api/errors.go

@@ -2,66 +2,66 @@ package api
 
 // Credits: https://www.joeshaw.org/error-handling-in-go-http-applications.
 
-// HTTPError is an interface allowing to retrieve the HTTP details of an error.
-type HTTPError interface {
-	HTTPError() (int, string)
+// HttpError is an interface allowing to retrieve the HTTP details of an error.
+type HttpError interface {
+	HttpError() (int, string)
 }
 
-// SentinelHTTPError is the HTTP sidekick of an error.
-type SentinelHTTPError struct {
+// SentinelHttpError is the HTTP sidekick of an error.
+type SentinelHttpError struct {
 	status  int
 	message string
 }
 
-// NewSentinelHTTPError creates a SentinelHTTPError. The message will be sent
+// NewSentinelHttpError creates a [SentinelHttpError]. The message will be sent
 // as the response's body if returned from a handler, so make sure to not leak
 // sensible information.
-func NewSentinelHTTPError(status int, message string) SentinelHTTPError {
-	return SentinelHTTPError{
+func NewSentinelHttpError(status int, message string) SentinelHttpError {
+	return SentinelHttpError{
 		status:  status,
 		message: message,
 	}
 }
 
 // Error returns the message.
-func (err SentinelHTTPError) Error() string {
+func (err SentinelHttpError) Error() string {
 	return err.message
 }
 
-// HTTPError returns the status and message.
-func (err SentinelHTTPError) HTTPError() (int, string) {
+// HttpError returns the status and message.
+func (err SentinelHttpError) HttpError() (int, string) {
 	return err.status, err.message
 }
 
 // sentinelWrappedError contains both the error which will logged and the
-// sidekick SentinelHTTPError.
+// sidekick [SentinelHttpError].
 type sentinelWrappedError struct {
 	error
-	sentinel SentinelHTTPError
+	sentinel SentinelHttpError
 }
 
 func (w sentinelWrappedError) Is(err error) bool {
 	return w.sentinel == err
 }
 
-func (w sentinelWrappedError) HTTPError() (int, string) {
-	return w.sentinel.HTTPError()
+func (w sentinelWrappedError) HttpError() (int, string) {
+	return w.sentinel.HttpError()
 }
 
-// WrapError wraps the given error with a SentinelHTTPError. The wrapped error
-// will be displayed in a log, while the SentinelHTTPError will be sent in the
-// response.
+// WrapError wraps the given error with a [SentinelHttpError]. The wrapped
+// error will be displayed in a log, while the [SentinelHttpError] will be sent
+// in the response.
 //
-//  return api.WrapError(
-//    // This first error will be logged.
-//    fmt.Errorf("my action: %w", err),
-//    // The HTTP error will be sent as a response.
-//    api.NewSentinelHTTPError(
-//      http.StatusForbidden,
-//      "Hey, you did something wrong!"
-//    ),
-//  )
-func WrapError(err error, sentinel SentinelHTTPError) error {
+//	return api.WrapError(
+//	  // This first error will be logged.
+//	  fmt.Errorf("my action: %w", err),
+//	  // The HTTP error will be sent as a response.
+//	  api.NewSentinelHttpError(
+//	    http.StatusForbidden,
+//	    "Hey, you did something wrong!"
+//	  ),
+//	)
+func WrapError(err error, sentinel SentinelHttpError) error {
 	return sentinelWrappedError{
 		error:    err,
 		sentinel: sentinel,
@@ -70,8 +70,8 @@ func WrapError(err error, sentinel SentinelHTTPError) error {
 
 // Interface guards.
 var (
-	_ error     = (*SentinelHTTPError)(nil)
-	_ HTTPError = (*SentinelHTTPError)(nil)
+	_ error     = (*SentinelHttpError)(nil)
+	_ HttpError = (*SentinelHttpError)(nil)
 	_ error     = (*sentinelWrappedError)(nil)
-	_ HTTPError = (*sentinelWrappedError)(nil)
+	_ HttpError = (*sentinelWrappedError)(nil)
 )

pkg/modules/api/errors_test.go

@@ -7,9 +7,9 @@ import (
 	"testing"
 )
 
-func TestNewSentinelHTTPError(t *testing.T) {
-	actual := NewSentinelHTTPError(http.StatusInternalServerError, "foo")
-	expect := SentinelHTTPError{
+func TestNewSentinelHttpError(t *testing.T) {
+	actual := NewSentinelHttpError(http.StatusInternalServerError, "foo")
+	expect := SentinelHttpError{
 		status:  http.StatusInternalServerError,
 		message: "foo",
 	}
@@ -19,8 +19,8 @@ func TestNewSentinelHTTPError(t *testing.T) {
 	}
 }
 
-func TestSentinelHTTPError_Error(t *testing.T) {
-	err := SentinelHTTPError{
+func TestSentinelHttpError_Error(t *testing.T) {
+	err := SentinelHttpError{
 		message: "foo",
 	}
 
@@ -32,11 +32,11 @@ func TestSentinelHTTPError_Error(t *testing.T) {
 	}
 }
 
-func TestSentinelHTTPError_HTTPError(t *testing.T) {
-	actualStatus, actualMessage := SentinelHTTPError{
+func TestSentinelHttpError_HttpError(t *testing.T) {
+	actualStatus, actualMessage := SentinelHttpError{
 		status:  http.StatusInternalServerError,
 		message: "foo",
-	}.HTTPError()
+	}.HttpError()
 
 	expectStatus := http.StatusInternalServerError
 	expectMessage := "foo"
@@ -51,7 +51,7 @@ func TestSentinelHTTPError_HTTPError(t *testing.T) {
 }
 
 func TestSentinelWrappedError_Is(t *testing.T) {
-	errSentinel := SentinelHTTPError{}
+	errSentinel := SentinelHttpError{}
 
 	err := sentinelWrappedError{
 		error:    errors.New("foo"),
@@ -63,19 +63,19 @@ func TestSentinelWrappedError_Is(t *testing.T) {
 	}
 }
 
-func TestSentinelWrappedError_HTTPError(t *testing.T) {
-	expectStatus, expectMessage := SentinelHTTPError{
+func TestSentinelWrappedError_HttpError(t *testing.T) {
+	expectStatus, expectMessage := SentinelHttpError{
 		status:  http.StatusInternalServerError,
 		message: "foo",
-	}.HTTPError()
+	}.HttpError()
 
 	actualStatus, actualMessage := sentinelWrappedError{
 		error: errors.New("foo"),
-		sentinel: SentinelHTTPError{
+		sentinel: SentinelHttpError{
 			status:  http.StatusInternalServerError,
 			message: "foo",
 		},
-	}.HTTPError()
+	}.HttpError()
 
 	if actualStatus != expectStatus {
 		t.Errorf("expected %d but got %d", expectStatus, actualStatus)
@@ -91,13 +91,13 @@ func TestWrapError(t *testing.T) {
 
 	expect := sentinelWrappedError{
 		error: errFoo,
-		sentinel: SentinelHTTPError{
+		sentinel: SentinelHttpError{
 			status:  http.StatusInternalServerError,
 			message: "foo",
 		},
 	}
 
-	actual := WrapError(errFoo, SentinelHTTPError{
+	actual := WrapError(errFoo, SentinelHttpError{
 		status:  http.StatusInternalServerError,
 		message: "foo",
 	})

pkg/modules/api/formdata.go

@@ -2,8 +2,9 @@ package api
 
 import (
 	"fmt"
-	"io/ioutil"
+	"math"
 	"net/http"
+	"os"
 	"path/filepath"
 	"sort"
 	"strconv"
@@ -11,156 +12,243 @@ import (
 	"time"
 
 	"go.uber.org/multierr"
+
+	"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
 )
 
 // FormData is a helper for validating and hydrating values from a
 // "multipart/form-data" request.
 //
-//  form := ctx.FormData()
+//	form := ctx.FormData()
 type FormData struct {
 	values map[string][]string
 	files  map[string]string
 	errors error
 }
 
-// Validate returns nil or an error related to the FormData values, with a
-// SentinelHTTPError (status code 400, errors' details as message) wrapped
+// Validate returns nil or an error related to the [FormData] values, with a
+// [SentinelHttpError] (status code 400, errors' details as a message) wrapped
 // inside.
 //
-//  var foo string
+//	var foo string
 //
-//  err := ctx.FormData().
-//     MandatoryString("foo", &foo, "bar").
-//     Validate()
-func (form FormData) Validate() error {
+//	err := ctx.FormData().
+//	   MandatoryString("foo", &foo, "bar").
+//	   Validate()
+func (form *FormData) Validate() error {
 	if form.errors == nil {
 		return nil
 	}
 
 	return WrapError(
 		form.errors,
-		NewSentinelHTTPError(http.StatusBadRequest, fmt.Sprintf("Invalid form data: %s", form.errors)),
+		NewSentinelHttpError(http.StatusBadRequest, fmt.Sprintf("Invalid form data: %s", form.errors)),
 	)
 }
 
-// String binds a form data value to a string variable.
+// String binds a form field to a string variable.
 //
-//  var foo string
+//	var foo string
 //
-//  ctx.FormData().String("foo", &foo, "bar")
+//	ctx.FormData().String("foo", &foo, "bar")
 func (form *FormData) String(key string, target *string, defaultValue string) *FormData {
 	return form.mustValue(key, target, defaultValue)
 }
 
-// MandatoryString binds a form data value to a string variable. It populates
+// MandatoryString binds a form field to a string variable. It populates
 // an error if the value is empty or the "key" does not exist.
 //
-//  var foo string
+//	var foo string
 //
-//  ctx.FormData().MandatoryString("foo", &foo)
+//	ctx.FormData().MandatoryString("foo", &foo)
 func (form *FormData) MandatoryString(key string, target *string) *FormData {
-	return form.mustMandatoryValue(key, target)
+	return form.mustMandatoryField(key, target)
 }
 
-// Bool binds a form data value to a bool variable. It populates an error if
+// Bool binds a form field to a bool variable. It populates an error if
 // the value is not bool.
 //
-//  var foo bool
+//	var foo bool
 //
-//  ctx.FormData().Bool("foo", &foo, true)
+//	ctx.FormData().Bool("foo", &foo, true)
 func (form *FormData) Bool(key string, target *bool, defaultValue bool) *FormData {
 	return form.mustValue(key, target, defaultValue)
 }
 
-// MandatoryBool binds a form data value to a bool variable. It populates an
+// MandatoryBool binds a form field to a bool variable. It populates an
 // error if the value is not bool, is empty, or the "key" does not exist.
 //
-//  var foo bool
+//	var foo bool
 //
-//  ctx.FormData().MandatoryBool("foo", &foo)
+//	ctx.FormData().MandatoryBool("foo", &foo)
 func (form *FormData) MandatoryBool(key string, target *bool) *FormData {
-	return form.mustMandatoryValue(key, target)
+	return form.mustMandatoryField(key, target)
 }
 
-// Int binds a form data value to an int variable. It populates an error if the
+// Int binds a form field to an int variable. It populates an error if the
 // value is not int.
 //
-//  var foo int
+//	var foo int
 //
-//  ctx.FormData().Int("foo", &foo, 2)
+//	ctx.FormData().Int("foo", &foo, 2)
 func (form *FormData) Int(key string, target *int, defaultValue int) *FormData {
 	return form.mustValue(key, target, defaultValue)
 }
 
-// MandatoryInt binds a form data value to an int variable. It populates an
-// error if the value is not int, is empty, or the "key" does not exist.
+// MandatoryInt binds a form field to an int variable. It populates an
+// error if the value is not int, or is empty, or the "key" does not exist.
 //
-//  var foo int
+//	var foo int
 //
-//  ctx.FormData().MandatoryInt("foo", &foo)
+//	ctx.FormData().MandatoryInt("foo", &foo)
 func (form *FormData) MandatoryInt(key string, target *int) *FormData {
-	return form.mustMandatoryValue(key, target)
+	return form.mustMandatoryField(key, target)
 }
 
-// Float64 binds a form data value to a float64 variable. It populates an error
+// Float64 binds a form field to a float64 variable. It populates an error
 // if the value is not float64.
 //
-//  var foo float64
+//	var foo float64
 //
-//  ctx.FormData().Float64("foo", &foo, 2.0)
+//	ctx.FormData().Float64("foo", &foo, 2.0)
 func (form *FormData) Float64(key string, target *float64, defaultValue float64) *FormData {
 	return form.mustValue(key, target, defaultValue)
 }
 
-// MandatoryFloat64 binds a form data value to a float64 variable. It populates
-// an error if the is not float64, is empty, or the "key" does not exist.
+// MandatoryFloat64 binds a form field to a float64 variable. It populates
+// an error if the value is not float64, is empty, or the "key" does not exist.
 //
-//  var foo float64
+//	var foo float64
 //
-//  ctx.FormData().MandatoryFloat64("foo", &foo)
+//	ctx.FormData().MandatoryFloat64("foo", &foo)
 func (form *FormData) MandatoryFloat64(key string, target *float64) *FormData {
-	return form.mustMandatoryValue(key, target)
+	return form.mustMandatoryField(key, target)
 }
 
-// Duration binds a form data value to a time.Duration variable. It populates
-// an error if the form data value is not time.Duration.
+// Duration binds a form field to a time.Duration variable. It populates
+// an error if the form field is not time.Duration.
 //
-//  var foo time.Duration
+//	var foo time.Duration
 //
-//  ctx.FormData().Duration("foo", &foo, time.Duration(2) * time.Second)
+//	ctx.FormData().Duration("foo", &foo, time.Duration(2) * time.Second)
 func (form *FormData) Duration(key string, target *time.Duration, defaultValue time.Duration) *FormData {
 	return form.mustValue(key, target, defaultValue)
 }
 
-// MandatoryDuration binds a form data value to a time.Duration variable. It
-// populates an error if the value is not time.Duration, is empty, or the "key"
-// does not exist.
+// MandatoryDuration binds a form field to a time.Duration variable. It
+// populates an error if the value is not time.Duration, or is empty, or the
+// "key" does not exist.
 //
-//  var foo time.Duration
+//	var foo time.Duration
 //
-//  ctx.FormData().MandatoryDuration("foo", &foo)
+//	ctx.FormData().MandatoryDuration("foo", &foo)
 func (form *FormData) MandatoryDuration(key string, target *time.Duration) *FormData {
-	return form.mustMandatoryValue(key, target)
+	return form.mustMandatoryField(key, target)
 }
 
-// Custom helps to define a custom binding function for a form data value.
+// Inches bind a form field to a float64 variable. It populates an error
+// if the value cannot be computed back to inches.
 //
-//  var foo map[string]string
+//	var foo float64
 //
-//  ctx.FormData().Custom("foo", func(value string) error {
-//    if value == "" {
-//      foo = "bar"
+//	ctx.FormData().Inches("foo", &foo, 2.0)
+func (form *FormData) Inches(key string, target *float64, defaultValue float64) *FormData {
+	form.inches(key, target)
+	if *target == -math.MaxFloat64 {
+		*target = defaultValue
+	}
+	return form
+}
+
+// MandatoryInches binds a form field to a float64 variable. It populates
+// an error if the value cannot be computed back to inches, is empty, or the
+// "key" does not exist.
 //
-//      return nil
-//    }
+//	var foo float64
 //
-//    err := json.Unmarshal([]byte(value), &foo)
-//    if err != nil {
-//      return fmt.Errorf("unmarshal foo: %w", err)
-//    }
+//	ctx.FormData().MandatoryInches("foo", &foo)
+func (form *FormData) MandatoryInches(key string, target *float64) *FormData {
+	val, ok := form.values[key]
+	if !ok || val[0] == "" {
+		form.append(
+			fmt.Errorf("form field '%s' is required", key),
+		)
+		return form
+	}
+	return form.inches(key, target)
+}
+
+// inches tries to compute a string value to inches.
+func (form *FormData) inches(key string, target *float64) *FormData {
+	var value string
+	form.mustValue(key, &value, "")
+
+	if value == "" {
+		*target = -math.MaxFloat64
+		return form
+	}
+
+	for _, unit := range []string{"pt", "px", "in", "mm", "cm", "pc"} {
+		if !strings.HasSuffix(value, unit) {
+			continue
+		}
+
+		val, err := strconv.ParseFloat(strings.TrimSuffix(value, unit), 64)
+		if err != nil {
+			form.append(
+				fmt.Errorf("form field '%s' is invalid (got '%s', resulting to %w)", key, value, err),
+			)
+			return form
+		}
+
+		switch unit {
+		case "pt":
+			*target = val * (1.0 / 72.0)
+		case "px":
+			*target = val * (1.0 / 96.0)
+		case "in":
+			*target = val
+		case "mm":
+			*target = val * (1.0 / 25.4)
+		case "cm":
+			*target = val * (1.0 / 2.54)
+		case "pc":
+			*target = val * (1.0 / 6.0)
+		}
+
+		return form
+	}
+
+	val, err := strconv.ParseFloat(value, 64)
+	if err != nil {
+		form.append(
+			fmt.Errorf("form field '%s' is invalid (got '%s', resulting to %w)", key, value, err),
+		)
+		return form
+	}
+
+	*target = val
+	return form
+}
+
+// Custom helps to define a custom binding function for a form field.
 //
-//    return nil
-//  })
+//	var foo map[string]string
+//
+//	ctx.FormData().Custom("foo", func(value string) error {
+//	  if value == "" {
+//	    foo = "bar"
+//
+//	    return nil
+//	  }
+//
+//	  err := json.Unmarshal([]byte(value), &foo)
+//	  if err != nil {
+//	    return fmt.Errorf("unmarshal foo: %w", err)
+//	  }
+//
+//	  return nil
+//	})
 func (form *FormData) Custom(key string, assign func(value string) error) *FormData {
 	var value string
 	form.mustValue(key, &value, "")
@@ -168,30 +256,29 @@ func (form *FormData) Custom(key string, assign func(value string) error) *FormD
 	err := assign(value)
 	if err != nil {
 		form.append(
-			fmt.Errorf("form value '%s' is invalid (got '%s', resulting to %w)", key, value, err),
+			fmt.Errorf("form field '%s' is invalid (got '%s', resulting to %w)", key, value, err),
 		)
 	}
 
 	return form
 }
 
-// MandatoryCustom helps to define a custom binding function for a form data
-// value. It populates an error if the value is empty or the "key" does not
-// exist.
+// MandatoryCustom helps to define a custom binding function for a form field.
+// It populates an error if the value is empty or the "key" does not exist.
 //
-//  var foo map[string]string
+//	var foo map[string]string
 //
-//  ctx.FormData().MandatoryCustom("foo", func(value string) error {
-//    err := json.Unmarshal([]byte(value), &foo)
-//    if err != nil {
-//      return fmt.Errorf("unmarshal foo: %w", err)
-//    }
+//	ctx.FormData().MandatoryCustom("foo", func(value string) error {
+//	  err := json.Unmarshal([]byte(value), &foo)
+//	  if err != nil {
+//	    return fmt.Errorf("unmarshal foo: %w", err)
+//	  }
 //
-//    return nil
-//  })
+//	  return nil
+//	})
 func (form *FormData) MandatoryCustom(key string, assign func(value string) error) *FormData {
 	var value string
-	form.mustMandatoryValue(key, &value)
+	form.mustMandatoryField(key, &value)
 
 	if value == "" {
 		return form
@@ -200,7 +287,7 @@ func (form *FormData) MandatoryCustom(key string, assign func(value string) erro
 	err := assign(value)
 	if err != nil {
 		form.append(
-			fmt.Errorf("form value '%s' is invalid (got '%s', resulting to %w)", key, value, err),
+			fmt.Errorf("form field '%s' is invalid (got '%s', resulting to %w)", key, value, err),
 		)
 	}
 
@@ -209,28 +296,28 @@ func (form *FormData) MandatoryCustom(key string, assign func(value string) erro
 
 // Path binds the absolute path of a form data file to a string variable.
 //
-//  var path string
+//	var path string
 //
-//  ctx.FormData().Path("foo.txt", &path)
+//	ctx.FormData().Path("foo.txt", &path)
 func (form *FormData) Path(filename string, target *string) *FormData {
 	return form.path(filename, target)
 }
 
-// MandatoryPath binds the absolute path ofa  form data file to a string
+// MandatoryPath binds the absolute path of a form data file to a string
 // variable. It populates an error if the file does not exist.
 //
-//  var path string
+//	var path string
 //
-//  ctx.FormData().MandatoryPath("foo.txt", &path)
+//	ctx.FormData().MandatoryPath("foo.txt", &path)
 func (form *FormData) MandatoryPath(filename string, target *string) *FormData {
 	return form.mandatoryPath(filename, target)
 }
 
 // Content binds the content of a form data file to a string variable.
 //
-//  var content string
+//	var content string
 //
-//  ctx.FormData().Content("foo.txt", &content, "bar")
+//	ctx.FormData().Content("foo.txt", &content, "bar")
 func (form *FormData) Content(filename string, target *string, defaultValue string) *FormData {
 	var path string
 	form.path(filename, &path)
@@ -247,9 +334,9 @@ func (form *FormData) Content(filename string, target *string, defaultValue stri
 // MandatoryContent binds the content of a form data file to a string variable.
 // It populates an error if the file does not exist.
 //
-//  var content string
+//	var content string
 //
-//  ctx.FormData().MandatoryContent("foo.txt", &content)
+//	ctx.FormData().MandatoryContent("foo.txt", &content)
 func (form *FormData) MandatoryContent(filename string, target *string) *FormData {
 	var path string
 	form.mandatoryPath(filename, &path)
@@ -261,12 +348,12 @@ func (form *FormData) MandatoryContent(filename string, target *string) *FormDat
 	return form.readFile(path, filename, target)
 }
 
-// Paths binds the absolute paths of form data files, according to a list of
+// Paths bind the absolute paths of form data files, according to a list of
 // file extensions, to a string slice variable.
 //
-//  var paths []string
+//	var paths []string
 //
-//  ctx.FormData().Paths([]string{".txt"}, &paths)
+//	ctx.FormData().Paths([]string{".txt"}, &paths)
 func (form *FormData) Paths(extensions []string, target *[]string) *FormData {
 	return form.paths(extensions, target)
 }
@@ -275,9 +362,9 @@ func (form *FormData) Paths(extensions []string, target *[]string) *FormData {
 // list of file extensions, to a string slice variable. It populates an error
 // if there is no file for given file extensions.
 //
-//  var paths []string
+//	var paths []string
 //
-//  ctx.FormData().MandatoryPaths([]string{".txt"}, &paths)
+//	ctx.FormData().MandatoryPaths([]string{".txt"}, &paths)
 func (form *FormData) MandatoryPaths(extensions []string, target *[]string) *FormData {
 	form.paths(extensions, target)
 
@@ -292,7 +379,7 @@ func (form *FormData) MandatoryPaths(extensions []string, target *[]string) *For
 	return form
 }
 
-// paths binds the absolute paths of form data files, according to a list of
+// paths bind the absolute paths of form data files, according to a list of
 // file extensions, to a string slice variable.
 func (form *FormData) paths(extensions []string, target *[]string) *FormData {
 	for filename, path := range form.files {
@@ -305,7 +392,7 @@ func (form *FormData) paths(extensions []string, target *[]string) *FormData {
 	}
 
 	// See https://github.com/gotenberg/gotenberg/issues/139.
-	sort.Strings(*target)
+	sort.Sort(gotenberg.AlphanumericSort(*target))
 
 	return form
 }
@@ -315,7 +402,7 @@ func (form *FormData) append(err error) {
 	form.errors = multierr.Append(form.errors, err)
 }
 
-// mustValue binds the target interface with a form data value. If the value is
+// mustValue binds the target interface with a form field. If the value is
 // empty or the "key" does not exist, it binds the default value. Currently,
 // only the string, bool, int, float64 and time.Duration types are bindable.
 func (form *FormData) mustValue(key string, target interface{}, defaultValue interface{}) *FormData {
@@ -343,16 +430,16 @@ func (form *FormData) mustValue(key string, target interface{}, defaultValue int
 	return form.mustAssign(key, val[0], target)
 }
 
-// mustMandatoryValue binds the target interface with a form data value. It
+// mustMandatoryField binds the target interface with a form field. It
 // populates an error if the value is empty or the "key" does not exist.
 // Currently, only the string, bool, int, float64 and time.Duration types are
 // bindable.
-func (form *FormData) mustMandatoryValue(key string, target interface{}) *FormData {
+func (form *FormData) mustMandatoryField(key string, target interface{}) *FormData {
 	val, ok := form.values[key]
 
 	if !ok || val[0] == "" {
 		form.append(
-			fmt.Errorf("form value '%s' is required", key),
+			fmt.Errorf("form field '%s' is required", key),
 		)
 
 		return form
@@ -386,7 +473,7 @@ func (form *FormData) mustAssign(key, value string, target interface{}) *FormDat
 
 	if err != nil {
 		form.append(
-			fmt.Errorf("form value '%s' is invalid (got '%s', resulting to %w)", key, value, err),
+			fmt.Errorf("form field '%s' is invalid (got '%s', resulting to %w)", key, value, err),
 		)
 	}
 
@@ -426,7 +513,7 @@ func (form *FormData) mandatoryPath(filename string, target *string) *FormData {
 // readFile binds the content of a file to a string variable. It populates an
 // error if it fails to read the file content.
 func (form *FormData) readFile(path, filename string, target *string) *FormData {
-	b, err := ioutil.ReadFile(path)
+	b, err := os.ReadFile(path)
 	if err != nil {
 		form.append(
 			fmt.Errorf("form file '%s' is invalid (%w)", filename, err),

pkg/modules/api/middlewares.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"context"
+	"crypto/subtle"
 	"errors"
 	"fmt"
 	"net/http"
@@ -10,17 +11,27 @@ import (
 
 	"github.com/google/uuid"
 	"github.com/labstack/echo/v4"
+	"github.com/labstack/echo/v4/middleware"
 	"go.uber.org/zap"
+
+	"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
 )
 
-// ErrAsyncProcess happens when a handler or middleware handles a request in an
-// asynchronous fashion.
-var ErrAsyncProcess = errors.New("async process")
+var (
+	// ErrAsyncProcess happens when a handler or middleware handles a request
+	// in an asynchronous fashion.
+	ErrAsyncProcess = errors.New("async process")
+
+	// ErrNoOutputFile happens when a handler or middleware handles a request
+	// without sending any output file.
+	ErrNoOutputFile = errors.New("no output file")
+)
 
 // ParseError parses an error and returns the corresponding HTTP status and
 // HTTP message.
 func ParseError(err error) (int, string) {
-	echoErr, ok := err.(*echo.HTTPError)
+	var echoErr *echo.HTTPError
+	ok := errors.As(err, &echoErr)
 	if ok {
 		return echoErr.Code, http.StatusText(echoErr.Code)
 	}
@@ -29,9 +40,29 @@ func ParseError(err error) (int, string) {
 		return http.StatusServiceUnavailable, http.StatusText(http.StatusServiceUnavailable)
 	}
 
-	var httpErr HTTPError
+	if errors.Is(err, gotenberg.ErrFiltered) {
+		return http.StatusForbidden, http.StatusText(http.StatusForbidden)
+	}
+
+	if errors.Is(err, gotenberg.ErrMaximumQueueSizeExceeded) {
+		return http.StatusTooManyRequests, http.StatusText(http.StatusTooManyRequests)
+	}
+
+	if errors.Is(err, gotenberg.ErrPdfSplitModeNotSupported) {
+		return http.StatusBadRequest, "At least one PDF engine cannot process the requested PDF split mode, while others may have failed to split due to different issues"
+	}
+
+	if errors.Is(err, gotenberg.ErrPdfFormatNotSupported) {
+		return http.StatusBadRequest, "At least one PDF engine cannot process the requested PDF format, while others may have failed to convert due to different issues"
+	}
+
+	if errors.Is(err, gotenberg.ErrPdfEngineMetadataValueNotSupported) {
+		return http.StatusBadRequest, "At least one PDF engine cannot process the requested metadata, while others may have failed to convert due to different issues"
+	}
+
+	var httpErr HttpError
 	if errors.As(err, &httpErr) {
-		return httpErr.HTTPError()
+		return httpErr.HttpError()
 	}
 
 	// Default 500 status code.
@@ -54,10 +85,10 @@ func httpErrorHandler() echo.HTTPErrorHandler {
 	}
 }
 
-// latencyMiddleware sets the start time in the echo.Context under "startTime".
-// Its value will be used later to calculate a request latency.
+// latencyMiddleware sets the start time in the [echo.Context] under
+// "startTime". Its value will be used later to calculate request latency.
 //
-//  startTime := c.Get("startTime").(time.Time)
+//	startTime := c.Get("startTime").(time.Time)
 func latencyMiddleware() echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
@@ -71,35 +102,34 @@ func latencyMiddleware() echo.MiddlewareFunc {
 	}
 }
 
-// rootPathMiddleware sets the root path in the echo.Context under "rootPath".
-// Its value may be used to skip a middleware execution based on a request
-// URI.
+// rootPathMiddleware sets the root path in the [echo.Context] under
+// "rootPath". Its value may be used to skip a middleware execution based on a
+// request URI.
 //
-//  rootPath := c.Get("rootPath").(string)
-//  healthURI := fmt.Sprintf("%s/health", rootPath)
+//	rootPath := c.Get("rootPath").(string)
+//	healthURI := fmt.Sprintf("%s/health", rootPath)
 //
-//  // Skip the middleware if health check URI.
-//  if c.Request().RequestURI == healthURI {
-//    // Call the next middleware in the chain.
-//    return next(c)
-//  }
+//	// Skip the middleware if it's the health check URI.
+//	if c.Request().RequestURI == healthURI {
+//	  // Call the next middleware in the chain.
+//	  return next(c)
+//	}
 func rootPathMiddleware(rootPath string) echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
 			c.Set("rootPath", rootPath)
-
 			// Call the next middleware in the chain.
 			return next(c)
 		}
 	}
 }
 
-// traceMiddleware sets the request identifier in the echo.Context under
+// traceMiddleware sets the request identifier in the [echo.Context] under
 // "trace". Its value is either retrieved from the trace header or generated if
 // the header is not present / its value is empty.
 //
-//  trace := c.Get("trace").(string)
-//  traceHeader := c.Get("traceHeader").(string).
+//	trace := c.Get("trace").(string)
+//	traceHeader := c.Get("traceHeader").(string).
 func traceMiddleware(header string) echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
@@ -120,10 +150,10 @@ func traceMiddleware(header string) echo.MiddlewareFunc {
 	}
 }
 
-// loggerMiddleware sets the logger in the echo.Context under "logger" and logs
-// a synchronous request result.
+// loggerMiddleware sets the logger in the [echo.Context] under "logger" and
+// logs a synchronous request result.
 //
-//  logger := c.Get("logger").(*zap.Logger)
+//	logger := c.Get("logger").(*zap.Logger)
 func loggerMiddleware(logger *zap.Logger, disableLoggingForPaths []string) echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
@@ -131,9 +161,12 @@ func loggerMiddleware(logger *zap.Logger, disableLoggingForPaths []string) echo.
 			trace := c.Get("trace").(string)
 			rootPath := c.Get("rootPath").(string)
 
-			// Create the request logger and add it to our locals.
-			reqLogger := logger.With(zap.String("trace", trace))
-			c.Set("logger", reqLogger.Named(func() string {
+			// Create the application logger and add it to our locals.
+			appLogger := logger.
+				With(zap.String("log_type", "application")).
+				With(zap.String("trace", trace))
+
+			c.Set("logger", appLogger.Named(func() string {
 				return strings.ReplaceAll(
 					strings.ReplaceAll(c.Request().URL.Path, rootPath, ""),
 					"/",
@@ -147,6 +180,11 @@ func loggerMiddleware(logger *zap.Logger, disableLoggingForPaths []string) echo.
 				c.Error(err)
 			}
 
+			// Create the access logger.
+			accessLogger := logger.
+				With(zap.String("log_type", "access")).
+				With(zap.String("trace", trace))
+
 			for _, path := range disableLoggingForPaths {
 				URI := fmt.Sprintf("%s%s", rootPath, path)
 
@@ -182,9 +220,9 @@ func loggerMiddleware(logger *zap.Logger, disableLoggingForPaths []string) echo.
 			fields[11] = zap.Int64("bytes_out", c.Response().Size)
 
 			if err != nil {
-				reqLogger.Error(err.Error(), fields...)
+				accessLogger.Error(err.Error(), fields...)
 			} else {
-				reqLogger.Info("request handled", fields...)
+				accessLogger.Info("request handled", fields...)
 			}
 
 			return nil
@@ -192,21 +230,34 @@ func loggerMiddleware(logger *zap.Logger, disableLoggingForPaths []string) echo.
 	}
 }
 
-// contextMiddleware, a middleware for "multipart/form-data" requests, sets the
-// Context and related context.CancelFunc in the echo.Context under "context"
-// and "cancel". If the process is synchronous, it also handles the result of a
-// "multipart/form-data" request.
+// basicAuthMiddleware manages basic authentication.
+func basicAuthMiddleware(username, password string) echo.MiddlewareFunc {
+	return middleware.BasicAuth(func(u string, p string, e echo.Context) (bool, error) {
+		if subtle.ConstantTimeCompare([]byte(u), []byte(username)) == 1 &&
+			subtle.ConstantTimeCompare([]byte(p), []byte(password)) == 1 {
+			return true, nil
+		}
+		return false, nil
+	})
+}
+
+// contextMiddleware, middleware for "multipart/form-data" requests, sets the
+// [Context] and related context.CancelFunc in the [echo.Context] under
+// "context" and "cancel". If the process is synchronous, it also handles the
+// result of a "multipart/form-data" request.
 //
-//  ctx := c.Get("context").(*api.Context)
-//  cancel := c.Get("cancel").(context.CancelFunc)
-func contextMiddleware(timeout time.Duration) echo.MiddlewareFunc {
+//	ctx := c.Get("context").(*api.Context)
+//	cancel := c.Get("cancel").(context.CancelFunc)
+func contextMiddleware(fs *gotenberg.FileSystem, timeout time.Duration, bodyLimit int64, downloadFromCfg downloadFromConfig) echo.MiddlewareFunc {
 	return func(next echo.HandlerFunc) echo.HandlerFunc {
 		return func(c echo.Context) error {
 			logger := c.Get("logger").(*zap.Logger)
+			traceHeader := c.Get("traceHeader").(string)
+			trace := c.Get("trace").(string)
 
 			// We create a context with a timeout so that underlying processes are
-			// able to stop early and handle correctly a timeout scenario.
-			ctx, cancel, err := newContext(c, logger, timeout)
+			// able to stop early and correctly handle a timeout scenario.
+			ctx, cancel, err := newContext(c, logger, fs, timeout, bodyLimit, downloadFromCfg, traceHeader, trace)
 			if err != nil {
 				cancel()
 
@@ -227,6 +278,13 @@ func contextMiddleware(timeout time.Duration) echo.MiddlewareFunc {
 
 			defer cancel()
 
+			if errors.Is(err, ErrNoOutputFile) {
+				// A middleware/handler tells us that it's handling the process
+				// in an asynchronous fashion. Therefore, we must not cancel
+				// the context nor send an output file.
+				return nil
+			}
+
 			if err != nil {
 				return err
 			}

pkg/modules/api/middlewares_test.go

@@ -1,506 +0,0 @@
-package api
-
-import (
-	"bytes"
-	"context"
-	"errors"
-	"mime/multipart"
-	"net/http"
-	"net/http/httptest"
-	"strings"
-	"testing"
-	"time"
-
-	"github.com/labstack/echo/v4"
-	"go.uber.org/zap"
-)
-
-func TestParseError(t *testing.T) {
-	for i, tc := range []struct {
-		err           error
-		expectStatus  int
-		expectMessage string
-	}{
-		{
-			err:           echo.ErrInternalServerError,
-			expectStatus:  http.StatusInternalServerError,
-			expectMessage: http.StatusText(http.StatusInternalServerError),
-		},
-		{
-			err:           context.DeadlineExceeded,
-			expectStatus:  http.StatusServiceUnavailable,
-			expectMessage: http.StatusText(http.StatusServiceUnavailable),
-		},
-		{
-			err: WrapError(
-				errors.New("foo"),
-				NewSentinelHTTPError(http.StatusBadRequest, "foo"),
-			),
-			expectStatus:  http.StatusBadRequest,
-			expectMessage: "foo",
-		},
-	} {
-		actualStatus, actualMessage := ParseError(tc.err)
-
-		if actualStatus != tc.expectStatus {
-			t.Errorf("test %d: expected HTTP status code %d but got %d", i, tc.expectStatus, actualStatus)
-		}
-
-		if actualMessage != tc.expectMessage {
-			t.Errorf("test %d: expected message '%s' but got '%s'", i, tc.expectMessage, actualMessage)
-		}
-	}
-}
-
-func TestHttpErrorHandler(t *testing.T) {
-	for i, tc := range []struct {
-		err           error
-		expectStatus  int
-		expectMessage string
-	}{
-		{
-			err:           echo.ErrInternalServerError,
-			expectStatus:  http.StatusInternalServerError,
-			expectMessage: http.StatusText(http.StatusInternalServerError),
-		},
-		{
-			err:           context.DeadlineExceeded,
-			expectStatus:  http.StatusServiceUnavailable,
-			expectMessage: http.StatusText(http.StatusServiceUnavailable),
-		},
-		{
-			err: WrapError(
-				errors.New("foo"),
-				NewSentinelHTTPError(http.StatusBadRequest, "foo"),
-			),
-			expectStatus:  http.StatusBadRequest,
-			expectMessage: "foo",
-		},
-	} {
-		recorder := httptest.NewRecorder()
-		request := httptest.NewRequest(http.MethodGet, "/foo", nil)
-
-		srv := echo.New()
-		srv.HideBanner = true
-		srv.HidePort = true
-
-		c := srv.NewContext(request, recorder)
-		c.Set("logger", zap.NewNop())
-
-		handler := httpErrorHandler()
-		handler(tc.err, c)
-
-		contentType := recorder.Header().Get(echo.HeaderContentType)
-		if contentType != echo.MIMETextPlainCharsetUTF8 {
-			t.Errorf("test %d: expected %s '%s' but got '%s'", i, echo.HeaderContentType, echo.MIMETextPlainCharsetUTF8, contentType)
-		}
-
-		// Note: we cannot test the trace header in the response here, as it is set in the trace middleware.
-
-		if recorder.Code != tc.expectStatus {
-			t.Errorf("test %d: expected HTTP status code %d but got %d", i, tc.expectStatus, recorder.Code)
-		}
-
-		if recorder.Body.String() != tc.expectMessage {
-			t.Errorf("test %d: expected message '%s' but got '%s'", i, tc.expectMessage, recorder.Body.String())
-		}
-	}
-}
-
-func TestLatencyMiddleware(t *testing.T) {
-	recorder := httptest.NewRecorder()
-	request := httptest.NewRequest(http.MethodGet, "/foo", nil)
-
-	srv := echo.New()
-	srv.HideBanner = true
-	srv.HidePort = true
-
-	c := srv.NewContext(request, recorder)
-
-	err := latencyMiddleware()(
-		func(c echo.Context) error {
-			return nil
-		},
-	)(c)
-
-	if err != nil {
-		t.Fatalf("expected no error but got: %v", err)
-	}
-
-	startTime := c.Get("startTime").(time.Time)
-	now := time.Now()
-
-	if now.Before(startTime) {
-		t.Errorf("expected start time %s to be < %s", startTime, now)
-	}
-}
-
-func TestRootPathMiddleware(t *testing.T) {
-	recorder := httptest.NewRecorder()
-	request := httptest.NewRequest(http.MethodGet, "/foo", nil)
-
-	srv := echo.New()
-	srv.HideBanner = true
-	srv.HidePort = true
-
-	c := srv.NewContext(request, recorder)
-
-	err := rootPathMiddleware("foo")(
-		func(c echo.Context) error {
-			return nil
-		},
-	)(c)
-
-	if err != nil {
-		t.Fatalf("expected no error but got: %v", err)
-	}
-
-	rootPath := c.Get("rootPath").(string)
-
-	if rootPath != "foo" {
-		t.Errorf("expected '%s' but got '%s", "foo", rootPath)
-	}
-}
-
-func TestTraceMiddleware(t *testing.T) {
-	for i, tc := range []struct {
-		trace string
-	}{
-		{
-			trace: "foo",
-		},
-		{
-			trace: "",
-		},
-	} {
-		recorder := httptest.NewRecorder()
-		request := httptest.NewRequest(http.MethodGet, "/foo", nil)
-
-		srv := echo.New()
-		srv.HideBanner = true
-		srv.HidePort = true
-
-		c := srv.NewContext(request, recorder)
-
-		if tc.trace != "" {
-			c.Request().Header.Set("Gotenberg-Trace", tc.trace)
-		}
-
-		err := traceMiddleware("Gotenberg-Trace")(
-			func(c echo.Context) error {
-				return nil
-			},
-		)(c)
-
-		if err != nil {
-			t.Fatalf("test %d: expected no error but got: %v", i, err)
-		}
-
-		trace := c.Get("trace").(string)
-
-		if trace == "" {
-			t.Errorf("test %d: expected non empty trace in context", i)
-		}
-
-		if tc.trace != "" && trace != tc.trace {
-			t.Errorf("test %d: expected context trace '%s' but got '%s'", i, tc.trace, trace)
-		}
-
-		if tc.trace == "" && trace == tc.trace {
-			t.Errorf("test %d: expected context trace different from '%s' but got '%s'", i, tc.trace, trace)
-		}
-
-		responseTrace := recorder.Header().Get("Gotenberg-Trace")
-
-		if tc.trace != "" && responseTrace != tc.trace {
-			t.Errorf("test %d: expected header trace '%s' but got '%s'", i, tc.trace, responseTrace)
-		}
-
-		if tc.trace == "" && responseTrace == tc.trace {
-			t.Errorf("test %d: expected header trace different from '%s' but got '%s'", i, tc.trace, responseTrace)
-		}
-	}
-}
-
-func TestLoggerMiddleware(t *testing.T) {
-	for i, tc := range []struct {
-		request     *http.Request
-		next        echo.HandlerFunc
-		skipLogging bool
-	}{
-		{
-			request: httptest.NewRequest(http.MethodGet, "/", nil),
-			next: func() echo.HandlerFunc {
-				return func(c echo.Context) error {
-					return errors.New("foo")
-				}
-			}(),
-		},
-		{
-			request: httptest.NewRequest(http.MethodGet, "/health", nil),
-			next: func() echo.HandlerFunc {
-				return func(c echo.Context) error {
-					return nil
-				}
-			}(),
-			skipLogging: true,
-		},
-		{
-			request: httptest.NewRequest(http.MethodGet, "/health", nil),
-			next: func() echo.HandlerFunc {
-				return func(c echo.Context) error {
-					return nil
-				}
-			}(),
-		},
-	} {
-		recorder := httptest.NewRecorder()
-
-		srv := echo.New()
-		srv.HideBanner = true
-		srv.HidePort = true
-
-		c := srv.NewContext(tc.request, recorder)
-		c.Set("startTime", time.Now())
-		c.Set("trace", "foo")
-		c.Set("rootPath", "/")
-
-		var disableLoggingForPaths []string
-		if tc.skipLogging {
-			disableLoggingForPaths = append(disableLoggingForPaths, tc.request.RequestURI)
-		}
-
-		err := loggerMiddleware(zap.NewNop(), disableLoggingForPaths)(tc.next)(c)
-
-		if err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-	}
-}
-
-func TestContextMiddleware(t *testing.T) {
-	buildMultipartFormDataRequest := func() *http.Request {
-		body := &bytes.Buffer{}
-		writer := multipart.NewWriter(body)
-
-		defer func() {
-			err := writer.Close()
-			if err != nil {
-				t.Fatalf("expected no error but got: %v", err)
-			}
-		}()
-
-		err := writer.WriteField("foo", "foo")
-		if err != nil {
-			t.Fatalf("expected no error but got: %v", err)
-		}
-
-		req := httptest.NewRequest(http.MethodPost, "/", body)
-		req.Header.Set(echo.HeaderContentType, writer.FormDataContentType())
-
-		return req
-	}
-
-	for i, tc := range []struct {
-		request           *http.Request
-		next              echo.HandlerFunc
-		expectErr         bool
-		expectStatus      int
-		expectContentType string
-		expectFilename    string
-	}{
-		{
-			request:   httptest.NewRequest(http.MethodGet, "/", nil),
-			expectErr: true,
-		},
-		{
-			request: buildMultipartFormDataRequest(),
-			next: func() echo.HandlerFunc {
-				return func(c echo.Context) error {
-					return ErrAsyncProcess
-				}
-			}(),
-			expectStatus: http.StatusNoContent,
-		},
-		{
-			request: buildMultipartFormDataRequest(),
-			next: func() echo.HandlerFunc {
-				return func(c echo.Context) error {
-					return errors.New("foo")
-				}
-			}(),
-			expectErr: true,
-		},
-		{
-			request: buildMultipartFormDataRequest(),
-			next: func() echo.HandlerFunc {
-				return func(c echo.Context) error {
-					return nil
-				}
-			}(),
-			expectErr: true,
-		},
-		{
-			request: func() *http.Request {
-				req := buildMultipartFormDataRequest()
-				req.Header.Set("Gotenberg-Output-Filename", "foo")
-
-				return req
-			}(),
-			next: func() echo.HandlerFunc {
-				return func(c echo.Context) error {
-					ctx := c.Get("context").(*Context)
-					ctx.outputPaths = []string{
-						"/tests/test/testdata/api/sample2.pdf",
-					}
-
-					return nil
-				}
-			}(),
-			expectStatus:      http.StatusOK,
-			expectContentType: "application/pdf",
-			expectFilename:    "foo.pdf",
-		},
-		{
-			request: buildMultipartFormDataRequest(),
-			next: func() echo.HandlerFunc {
-				return func(c echo.Context) error {
-					ctx := c.Get("context").(*Context)
-					ctx.outputPaths = []string{
-						"/tests/test/testdata/api/sample1.txt",
-						"/tests/test/testdata/api/sample2.pdf",
-					}
-
-					return nil
-				}
-			}(),
-			expectStatus:      http.StatusOK,
-			expectContentType: "application/zip",
-		},
-	} {
-		recorder := httptest.NewRecorder()
-
-		srv := echo.New()
-		srv.HideBanner = true
-		srv.HidePort = true
-
-		c := srv.NewContext(tc.request, recorder)
-		c.Set("logger", zap.NewNop())
-		c.Set("trace", "foo")
-		c.Set("startTime", time.Now())
-
-		err := contextMiddleware(time.Duration(10) * time.Second)(tc.next)(c)
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-
-		if err != nil {
-			continue
-		}
-
-		if recorder.Code != tc.expectStatus {
-			t.Errorf("test %d: expected HTTP status code %d but got %d", i, tc.expectStatus, recorder.Code)
-		}
-
-		if tc.expectStatus == http.StatusNoContent {
-			continue
-		}
-
-		contentType := recorder.Header().Get(echo.HeaderContentType)
-		if contentType != tc.expectContentType {
-			t.Errorf("test %d: expected %s '%s' but got '%s'", i, echo.HeaderContentType, tc.expectContentType, contentType)
-		}
-
-		contentDisposition := recorder.Header().Get(echo.HeaderContentDisposition)
-		if !strings.Contains(contentDisposition, tc.expectFilename) {
-			t.Errorf("test %d: expected %s '%s' to contain '%s'", i, echo.HeaderContentDisposition, contentDisposition, tc.expectFilename)
-		}
-	}
-}
-
-func TestHardTimeoutMiddleware(t *testing.T) {
-	for i, tc := range []struct {
-		next              echo.HandlerFunc
-		timeout           time.Duration
-		expectErr         bool
-		expectHardTimeout bool
-	}{
-		{
-			next: func() echo.HandlerFunc {
-				return func(c echo.Context) error {
-					return nil
-				}
-			}(),
-			timeout: time.Duration(100) * time.Millisecond,
-		},
-		{
-			next: func() echo.HandlerFunc {
-				return func(c echo.Context) error {
-					panic("foo")
-				}
-			}(),
-			timeout:           time.Duration(100) * time.Millisecond,
-			expectErr:         true,
-			expectHardTimeout: true,
-		},
-		{
-			next: func() echo.HandlerFunc {
-				return func(c echo.Context) error {
-					return errors.New("foo")
-				}
-			}(),
-			timeout:   time.Duration(100) * time.Millisecond,
-			expectErr: true,
-		},
-		{
-			next: func() echo.HandlerFunc {
-				return func(c echo.Context) error {
-					time.Sleep(time.Duration(200) * time.Millisecond)
-
-					return nil
-				}
-			}(),
-			timeout:           time.Duration(100) * time.Millisecond,
-			expectErr:         true,
-			expectHardTimeout: true,
-		},
-	} {
-		recorder := httptest.NewRecorder()
-		request := httptest.NewRequest(http.MethodGet, "/foo", nil)
-
-		srv := echo.New()
-		srv.HideBanner = true
-		srv.HidePort = true
-
-		c := srv.NewContext(request, recorder)
-		c.Set("logger", zap.NewNop())
-
-		err := hardTimeoutMiddleware(tc.timeout)(tc.next)(c)
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-
-		var isHardTimeout bool
-		if err != nil {
-			isHardTimeout = strings.Contains(err.Error(), "hard timeout")
-		}
-
-		if tc.expectHardTimeout && !isHardTimeout {
-			t.Errorf("test %d: expected hard timeout error but got: %v", i, err)
-		}
-
-		if !tc.expectHardTimeout && isHardTimeout {
-			t.Errorf("test %d: expected no hard timeout error but got one: %v", i, err)
-		}
-	}
-}

pkg/modules/api/mocks.go

@@ -1,74 +1,142 @@
 package api
 
 import (
+	"github.com/alexliesenfeld/health"
 	"github.com/labstack/echo/v4"
 	"go.uber.org/zap"
+
+	"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
 )
 
 // ContextMock is a helper for tests.
 //
-//  ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx := &api.ContextMock{Context: &api.Context{}}
 type ContextMock struct {
 	*Context
 }
 
 // SetDirPath sets the context's working directory path.
 //
-//  ctx := &api.ContextMock{Context: &api.Context{}}
-//  ctx.SetDirPath("/foo")
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.SetDirPath("/foo")
 func (ctx *ContextMock) SetDirPath(path string) {
 	ctx.dirPath = path
 }
 
+// DirPath returns the context's working directory path.
+//
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.SetDirPath("/foo")
+//	dirPath := ctx.DirPath()
+func (ctx *ContextMock) DirPath() string {
+	return ctx.dirPath
+}
+
 // SetValues sets the values.
 //
-//  ctx := &api.ContextMock{Context: &api.Context{}}
-//  ctx.SetValues(map[string][]string{
-//    "url": {
-//      "foo",
-//    },
-//  })
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.SetValues(map[string][]string{
+//	  "url": {
+//	    "foo",
+//	  },
+//	})
 func (ctx *ContextMock) SetValues(values map[string][]string) {
 	ctx.values = values
 }
 
 // SetFiles sets the files.
 //
-//  ctx := &api.ContextMock{Context: &api.Context{}}
-//  ctx.SetFiles(map[string]string{
-//    "foo": "/foo",
-//  })
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.SetFiles(map[string]string{
+//	  "foo": "/foo",
+//	})
 func (ctx *ContextMock) SetFiles(files map[string]string) {
 	ctx.files = files
 }
 
-// SetCancelled sets if the context is cancelled or not.
+// SetCancelled sets if the context is canceled or not.
 //
-//  ctx := &api.ContextMock{Context: &api.Context{}}
-//  ctx.SetCancelled(true)
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.SetCancelled(true)
 func (ctx *ContextMock) SetCancelled(cancelled bool) {
 	ctx.cancelled = cancelled
 }
 
 // OutputPaths returns the registered output paths.
-//  ctx := &api.ContextMock{Context: &api.Context{}}
-//  outputPaths := ctx.OutputPaths()
-func (ctx ContextMock) OutputPaths() []string {
+//
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	outputPaths := ctx.OutputPaths()
+func (ctx *ContextMock) OutputPaths() []string {
 	return ctx.outputPaths
 }
 
 // SetLogger sets the logger.
 //
-//  ctx := &api.ContextMock{Context: &api.Context{}}
-//  ctx.SetLogger(zap.NewNop())
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.SetLogger(zap.NewNop())
 func (ctx *ContextMock) SetLogger(logger *zap.Logger) {
 	ctx.logger = logger
 }
 
-// SetEchoContext sets the echo.Context.
+// SetEchoContext sets the [echo.Context].
 //
-//  ctx := &api.ContextMock{Context: &api.Context{}}
-//  ctx.setEchoContext(c)
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.setEchoContext(c)
 func (ctx *ContextMock) SetEchoContext(c echo.Context) {
-	ctx.Context.echoCtx = c
+	ctx.echoCtx = c
 }
+
+// SetMkdirAll sets the [gotenberg.MkdirAll].
+//
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.SetMkdirAll(mkdirAll)
+func (ctx *ContextMock) SetMkdirAll(mkdirAll gotenberg.MkdirAll) {
+	ctx.mkdirAll = mkdirAll
+}
+
+// SetPathRename sets the [gotenberg.PathRename].
+//
+//	ctx := &api.ContextMock{Context: &api.Context{}}
+//	ctx.setPathRename(rename)
+func (ctx *ContextMock) SetPathRename(rename gotenberg.PathRename) {
+	ctx.pathRename = rename
+}
+
+// RouterMock is a mock for the [Router] interface.
+type RouterMock struct {
+	RoutesMock func() ([]Route, error)
+}
+
+func (router *RouterMock) Routes() ([]Route, error) {
+	return router.RoutesMock()
+}
+
+// MiddlewareProviderMock is a mock for the [MiddlewareProvider] interface.
+type MiddlewareProviderMock struct {
+	MiddlewaresMock func() ([]Middleware, error)
+}
+
+func (provider *MiddlewareProviderMock) Middlewares() ([]Middleware, error) {
+	return provider.MiddlewaresMock()
+}
+
+// HealthCheckerMock is a mock for the [HealthChecker] interface.
+type HealthCheckerMock struct {
+	ChecksMock func() ([]health.CheckerOption, error)
+	ReadyMock  func() error
+}
+
+func (mod *HealthCheckerMock) Checks() ([]health.CheckerOption, error) {
+	return mod.ChecksMock()
+}
+
+func (mod *HealthCheckerMock) Ready() error {
+	return mod.ReadyMock()
+}
+
+// Interface guards.
+var (
+	_ Router             = (*RouterMock)(nil)
+	_ MiddlewareProvider = (*MiddlewareProviderMock)(nil)
+	_ HealthChecker      = (*HealthCheckerMock)(nil)
+)

pkg/modules/api/mocks_test.go

@@ -1,105 +0,0 @@
-package api
-
-import (
-	"reflect"
-	"testing"
-
-	"github.com/labstack/echo/v4"
-	"go.uber.org/zap"
-)
-
-func TestContextMock_SetDirPath(t *testing.T) {
-	mock := &ContextMock{&Context{}}
-	mock.SetDirPath("/foo")
-
-	actual := mock.dirPath
-	expect := "/foo"
-
-	if actual != expect {
-		t.Errorf("expected '%s' but got '%s'", expect, actual)
-	}
-}
-
-func TestContextMock_SetValues(t *testing.T) {
-	mock := &ContextMock{&Context{}}
-	mock.SetValues(map[string][]string{
-		"foo": {"foo"},
-	})
-
-	actual := mock.values
-	expect := map[string][]string{
-		"foo": {"foo"},
-	}
-
-	if !reflect.DeepEqual(actual, expect) {
-		t.Errorf("expected %+v but got: %+v", expect, actual)
-	}
-}
-
-func TestContextMock_SetFiles(t *testing.T) {
-	mock := &ContextMock{&Context{}}
-	mock.SetFiles(map[string]string{
-		"foo": "/foo",
-	})
-
-	actual := mock.files
-	expect := map[string]string{
-		"foo": "/foo",
-	}
-
-	if !reflect.DeepEqual(actual, expect) {
-		t.Errorf("expected %+v but got: %+v", expect, actual)
-	}
-}
-
-func TestContextMock_SetCancelled(t *testing.T) {
-	mock := &ContextMock{&Context{}}
-	mock.SetCancelled(true)
-
-	actual := mock.cancelled
-
-	if !actual {
-		t.Errorf("expected %t but got %t", true, actual)
-	}
-}
-
-func TestContextMock_OutputPaths(t *testing.T) {
-	mock := ContextMock{
-		&Context{
-			outputPaths: []string{"/foo"},
-		},
-	}
-
-	actual := mock.OutputPaths()
-	expect := []string{"/foo"}
-
-	if !reflect.DeepEqual(actual, expect) {
-		t.Errorf("expected %+v but got: %+v", expect, actual)
-	}
-}
-
-func TestContextMock_SetLogger(t *testing.T) {
-	mock := ContextMock{&Context{}}
-
-	expect := zap.NewNop()
-	mock.SetLogger(expect)
-
-	actual := mock.logger
-
-	if actual != expect {
-		t.Errorf("expected %v but got %v", expect, actual)
-	}
-}
-
-func TestContextMock_SetEchoContext(t *testing.T) {
-	mock := ContextMock{&Context{}}
-
-	expect := echo.New().NewContext(nil, nil)
-	mock.SetEchoContext(expect)
-
-	actual := mock.echoCtx
-
-	if actual != expect {
-		t.Errorf("expected %v but got %v", expect, actual)
-	}
-}

pkg/modules/api/testdata/sample.txt

@@ -0,0 +1 @@
+This is a text from a text file.

pkg/modules/chromium/browser.go

@@ -0,0 +1,467 @@
+package chromium
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/chromedp/cdproto/fetch"
+	"github.com/chromedp/cdproto/network"
+	"github.com/chromedp/cdproto/page"
+	"github.com/chromedp/cdproto/runtime"
+	"github.com/chromedp/chromedp"
+	"github.com/dlclark/regexp2"
+	"github.com/shirou/gopsutil/v4/process"
+	"go.uber.org/zap"
+
+	"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
+)
+
+type browser interface {
+	gotenberg.Process
+	pdf(ctx context.Context, logger *zap.Logger, url, outputPath string, options PdfOptions) error
+	screenshot(ctx context.Context, logger *zap.Logger, url, outputPath string, options ScreenshotOptions) error
+}
+
+type browserArguments struct {
+	// Executor args.
+	binPath                  string
+	incognito                bool
+	allowInsecureLocalhost   bool
+	ignoreCertificateErrors  bool
+	disableWebSecurity       bool
+	allowFileAccessFromFiles bool
+	hostResolverRules        string
+	proxyServer              string
+	wsUrlReadTimeout         time.Duration
+
+	// Tasks specific.
+	allowList         *regexp2.Regexp
+	denyList          *regexp2.Regexp
+	clearCache        bool
+	clearCookies      bool
+	disableJavaScript bool
+}
+
+type chromiumBrowser struct {
+	initialCtx         context.Context
+	ctx                context.Context
+	cancelFunc         context.CancelFunc
+	userProfileDirPath string
+	ctxMu              sync.RWMutex
+	isStarted          atomic.Bool
+
+	arguments browserArguments
+	fs        *gotenberg.FileSystem
+}
+
+func newChromiumBrowser(arguments browserArguments) browser {
+	b := &chromiumBrowser{
+		initialCtx: context.Background(),
+		arguments:  arguments,
+		fs:         gotenberg.NewFileSystem(new(gotenberg.OsMkdirAll)),
+	}
+	b.isStarted.Store(false)
+
+	return b
+}
+
+func (b *chromiumBrowser) Start(logger *zap.Logger) error {
+	if b.isStarted.Load() {
+		return errors.New("browser is already started")
+	}
+
+	debug := &debugLogger{logger: logger}
+	b.userProfileDirPath = b.fs.NewDirPath()
+
+	opts := append(chromedp.DefaultExecAllocatorOptions[:],
+		chromedp.CombinedOutput(debug),
+		chromedp.ExecPath(b.arguments.binPath),
+		chromedp.NoSandbox,
+		// See:
+		// https://github.com/gotenberg/gotenberg/issues/327
+		// https://github.com/chromedp/chromedp/issues/904
+		chromedp.DisableGPU,
+		// See:
+		// https://github.com/puppeteer/puppeteer/issues/661
+		// https://github.com/puppeteer/puppeteer/issues/2410
+		chromedp.Flag("font-render-hinting", "none"),
+		chromedp.UserDataDir(b.userProfileDirPath),
+		// See https://github.com/gotenberg/gotenberg/issues/831.
+		chromedp.Flag("disable-pdf-tagging", true),
+		// See https://github.com/gotenberg/gotenberg/issues/1177.
+		chromedp.Flag("no-zygote", true),
+		chromedp.Flag("disable-dev-shm-usage", true),
+	)
+
+	if b.arguments.incognito {
+		opts = append(opts, chromedp.Flag("incognito", b.arguments.incognito))
+	}
+
+	if b.arguments.allowInsecureLocalhost {
+		// See https://github.com/gotenberg/gotenberg/issues/488.
+		opts = append(opts, chromedp.Flag("allow-insecure-localhost", true))
+	}
+
+	if b.arguments.ignoreCertificateErrors {
+		opts = append(opts, chromedp.IgnoreCertErrors)
+	}
+
+	if b.arguments.disableWebSecurity {
+		opts = append(opts, chromedp.Flag("disable-web-security", true))
+	}
+
+	if b.arguments.allowFileAccessFromFiles {
+		// See https://github.com/gotenberg/gotenberg/issues/356.
+		opts = append(opts, chromedp.Flag("allow-file-access-from-files", true))
+	}
+
+	if b.arguments.hostResolverRules != "" {
+		// See https://github.com/gotenberg/gotenberg/issues/488.
+		opts = append(opts, chromedp.Flag("host-resolver-rules", b.arguments.hostResolverRules))
+	}
+
+	if b.arguments.proxyServer != "" {
+		// See https://github.com/gotenberg/gotenberg/issues/376.
+		opts = append(opts, chromedp.ProxyServer(b.arguments.proxyServer))
+	}
+
+	// See https://github.com/gotenberg/gotenberg/issues/524.
+	opts = append(opts, chromedp.WSURLReadTimeout(b.arguments.wsUrlReadTimeout))
+
+	allocatorCtx, allocatorCancel := chromedp.NewExecAllocator(b.initialCtx, opts...)
+	ctx, cancel := chromedp.NewContext(allocatorCtx, chromedp.WithDebugf(debug.Printf))
+
+	err := chromedp.Run(ctx)
+	if err != nil {
+		cancel()
+		allocatorCancel()
+		return fmt.Errorf("run exec allocator: %w", err)
+	}
+
+	b.ctxMu.Lock()
+	defer b.ctxMu.Unlock()
+
+	// We have to keep the context around, as we need it to create new tabs
+	// later.
+	b.ctx = ctx
+	b.cancelFunc = func() {
+		cancel()
+		allocatorCancel()
+	}
+	b.isStarted.Store(true)
+
+	return nil
+}
+
+func (b *chromiumBrowser) Stop(logger *zap.Logger) error {
+	if !b.isStarted.Load() {
+		// No big deal? Like calling cancel twice.
+		return nil
+	}
+
+	// Always remove the user profile directory created by Chromium.
+	copyUserProfileDirPath := b.userProfileDirPath
+	expirationTime := time.Now()
+	defer func(userProfileDirPath string, expirationTime time.Time) {
+		// See:
+		// https://github.com/SeleniumHQ/docker-selenium/blob/7216d060d86872afe853ccda62db0dfab5118dc7/NodeChrome/chrome-cleanup.sh
+		// https://github.com/SeleniumHQ/docker-selenium/blob/7216d060d86872afe853ccda62db0dfab5118dc7/NodeChromium/chrome-cleanup.sh
+
+		// Clean up stuck processes.
+		ps, err := process.Processes()
+		if err != nil {
+			logger.Error(fmt.Sprintf("list processes: %v", err))
+		} else {
+			for _, p := range ps {
+				func() {
+					cmdline, err := p.Cmdline()
+					if err != nil {
+						return
+					}
+
+					if !strings.Contains(cmdline, "chromium/chromium") && !strings.Contains(cmdline, "chrome/chrome") {
+						return
+					}
+
+					killCtx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+					defer cancel()
+
+					err = p.KillWithContext(killCtx)
+					if err != nil {
+						logger.Error(fmt.Sprintf("kill process: %v", err))
+					} else {
+						logger.Debug(fmt.Sprintf("Chromium process %d killed", p.Pid))
+					}
+				}()
+			}
+		}
+
+		go func() {
+			// FIXME: Chromium seems to recreate the user profile directory
+			//  right after its deletion if we do not wait a certain amount
+			//  of time before deleting it.
+			<-time.After(10 * time.Second)
+
+			err = os.RemoveAll(userProfileDirPath)
+			if err != nil {
+				logger.Error(fmt.Sprintf("remove Chromium's user profile directory: %s", err))
+			} else {
+				logger.Debug(fmt.Sprintf("'%s' Chromium's user profile directory removed", userProfileDirPath))
+			}
+
+			// Also, remove Chromium-specific files in the temporary directory.
+			err = gotenberg.GarbageCollect(logger, os.TempDir(), []string{".org.chromium.Chromium", ".com.google.Chrome"}, expirationTime)
+			if err != nil {
+				logger.Error(err.Error())
+			}
+		}()
+	}(copyUserProfileDirPath, expirationTime)
+
+	b.ctxMu.Lock()
+	defer b.ctxMu.Unlock()
+
+	b.cancelFunc()
+	b.ctx = nil
+	b.userProfileDirPath = ""
+	b.isStarted.Store(false)
+
+	return nil
+}
+
+func (b *chromiumBrowser) Healthy(logger *zap.Logger) bool {
+	// Good to know: the supervisor does not call this method if no first start
+	// or if the process is restarting.
+
+	if !b.isStarted.Load() {
+		// Non-started browser but not restarting?
+		return false
+	}
+
+	b.ctxMu.RLock()
+	defer b.ctxMu.RUnlock()
+
+	timeoutCtx, timeoutCancel := context.WithTimeout(b.ctx, time.Duration(10)*time.Second)
+	defer timeoutCancel()
+
+	taskCtx, taskCancel := chromedp.NewContext(timeoutCtx)
+	defer taskCancel()
+
+	err := chromedp.Run(taskCtx, chromedp.Navigate("about:blank"))
+	if err != nil {
+		logger.Error(fmt.Sprintf("browser health check failed: %s", err))
+		return false
+	}
+
+	return true
+}
+
+func (b *chromiumBrowser) pdf(ctx context.Context, logger *zap.Logger, url, outputPath string, options PdfOptions) error {
+	// Note: no error wrapping because it leaks on errors we want to display to
+	// the end user.
+	return b.do(ctx, logger, url, options.Options, chromedp.Tasks{
+		network.Enable(),
+		fetch.Enable(),
+		runtime.Enable(),
+		clearCacheActionFunc(logger, b.arguments.clearCache),
+		clearCookiesActionFunc(logger, b.arguments.clearCookies),
+		disableJavaScriptActionFunc(logger, b.arguments.disableJavaScript),
+		setCookiesActionFunc(logger, options.Cookies),
+		userAgentOverride(logger, options.UserAgent),
+		navigateActionFunc(logger, url, options.SkipNetworkIdleEvent),
+		hideDefaultWhiteBackgroundActionFunc(logger, options.OmitBackground, options.PrintBackground),
+		forceExactColorsActionFunc(logger, options.PrintBackground),
+		emulateMediaTypeActionFunc(logger, options.EmulatedMediaType),
+		waitForExpressionBeforePrintActionFunc(logger, b.arguments.disableJavaScript, options.WaitForExpression),
+		waitDelayBeforePrintActionFunc(logger, b.arguments.disableJavaScript, options.WaitDelay),
+		// PDF specific.
+		printToPdfActionFunc(logger, outputPath, options),
+		// Teardown.
+		page.Close(),
+	})
+}
+
+func (b *chromiumBrowser) screenshot(ctx context.Context, logger *zap.Logger, url, outputPath string, options ScreenshotOptions) error {
+	// Note: no error wrapping because it leaks on errors we want to display to
+	// the end user.
+	return b.do(ctx, logger, url, options.Options, chromedp.Tasks{
+		network.Enable(),
+		fetch.Enable(),
+		runtime.Enable(),
+		clearCacheActionFunc(logger, b.arguments.clearCache),
+		clearCookiesActionFunc(logger, b.arguments.clearCookies),
+		disableJavaScriptActionFunc(logger, b.arguments.disableJavaScript),
+		setCookiesActionFunc(logger, options.Cookies),
+		userAgentOverride(logger, options.UserAgent),
+		navigateActionFunc(logger, url, options.SkipNetworkIdleEvent),
+		hideDefaultWhiteBackgroundActionFunc(logger, options.OmitBackground, true),
+		forceExactColorsActionFunc(logger, true),
+		emulateMediaTypeActionFunc(logger, options.EmulatedMediaType),
+		waitForExpressionBeforePrintActionFunc(logger, b.arguments.disableJavaScript, options.WaitForExpression),
+		waitDelayBeforePrintActionFunc(logger, b.arguments.disableJavaScript, options.WaitDelay),
+		// Screenshot specific.
+		setDeviceMetricsOverride(logger, options.Width, options.Height),
+		captureScreenshotActionFunc(logger, outputPath, options),
+		// Teardown.
+		page.Close(),
+	})
+}
+
+func (b *chromiumBrowser) do(ctx context.Context, logger *zap.Logger, url string, options Options, tasks chromedp.Tasks) error {
+	if !b.isStarted.Load() {
+		return errors.New("browser not started, cannot handle tasks")
+	}
+
+	deadline, ok := ctx.Deadline()
+	if !ok {
+		return errors.New("context has no deadline")
+	}
+
+	// We validate the "main" URL against our allowed / deny lists.
+	err := gotenberg.FilterDeadline(b.arguments.allowList, b.arguments.denyList, url, deadline)
+	if err != nil {
+		return fmt.Errorf("filter URL: %w", err)
+	}
+
+	b.ctxMu.RLock()
+	defer b.ctxMu.RUnlock()
+
+	timeoutCtx, timeoutCancel := context.WithTimeout(b.ctx, time.Until(deadline))
+	defer timeoutCancel()
+
+	taskCtx, taskCancel := chromedp.NewContext(timeoutCtx)
+	defer taskCancel()
+
+	// We validate all other requests against our allowed / deny lists.
+	// If a request does not pass the validation, we make it fail. It also set
+	// the extra HTTP headers, if any.
+	// See https://github.com/gotenberg/gotenberg/issues/1011.
+	listenForEventRequestPaused(taskCtx, logger, eventRequestPausedOptions{
+		allowList:        b.arguments.allowList,
+		denyList:         b.arguments.denyList,
+		extraHttpHeaders: options.ExtraHttpHeaders,
+	})
+
+	var (
+		invalidHttpStatusCode           error
+		invalidHttpStatusCodeMu         sync.RWMutex
+		invalidResourceHttpStatusCode   error
+		invalidResourceHttpStatusCodeMu sync.RWMutex
+	)
+
+	// See:
+	// https://github.com/gotenberg/gotenberg/issues/613.
+	// https://github.com/gotenberg/gotenberg/issues/1021.
+	if len(options.FailOnHttpStatusCodes) != 0 || len(options.FailOnResourceHttpStatusCodes) != 0 {
+		listenForEventResponseReceived(taskCtx, logger, eventResponseReceivedOptions{
+			mainPageUrl:                     url,
+			failOnHttpStatusCodes:           options.FailOnHttpStatusCodes,
+			invalidHttpStatusCode:           &invalidHttpStatusCode,
+			invalidHttpStatusCodeMu:         &invalidHttpStatusCodeMu,
+			failOnResourceOnHttpStatusCode:  options.FailOnResourceHttpStatusCodes,
+			invalidResourceHttpStatusCode:   &invalidResourceHttpStatusCode,
+			invalidResourceHttpStatusCodeMu: &invalidResourceHttpStatusCodeMu,
+		})
+	}
+
+	var (
+		consoleExceptions   error
+		consoleExceptionsMu sync.RWMutex
+	)
+
+	// See https://github.com/gotenberg/gotenberg/issues/262.
+	if options.FailOnConsoleExceptions && !b.arguments.disableJavaScript {
+		listenForEventExceptionThrown(taskCtx, logger, &consoleExceptions, &consoleExceptionsMu)
+	}
+
+	var (
+		loadingFailed           error
+		loadingFailedMu         sync.RWMutex
+		resourceLoadingFailed   error
+		resourceLoadingFailedMu sync.RWMutex
+	)
+
+	// See:
+	// https://github.com/gotenberg/gotenberg/issues/913.
+	// https://github.com/gotenberg/gotenberg/issues/959.
+	// https://github.com/gotenberg/gotenberg/issues/1021.
+	listenForEventLoadingFailed(taskCtx, logger, eventLoadingFailedOptions{
+		loadingFailed:           &loadingFailed,
+		loadingFailedMu:         &loadingFailedMu,
+		resourceLoadingFailed:   &resourceLoadingFailed,
+		resourceLoadingFailedMu: &resourceLoadingFailedMu,
+	})
+
+	err = chromedp.Run(taskCtx, tasks...)
+	if err != nil {
+		errMessage := err.Error()
+
+		if strings.Contains(errMessage, "Show invalid printer settings error (-32000)") || strings.Contains(errMessage, "content area is empty (-32602)") {
+			return ErrInvalidPrinterSettings
+		}
+
+		if strings.Contains(errMessage, "Page range syntax error") {
+			return ErrPageRangesSyntaxError
+		}
+
+		if strings.Contains(errMessage, "rpcc: message too large") {
+			return ErrRpccMessageTooLarge
+		}
+
+		return fmt.Errorf("handle tasks: %w", err)
+	}
+
+	// See https://github.com/gotenberg/gotenberg/issues/613.
+	invalidHttpStatusCodeMu.RLock()
+	defer invalidHttpStatusCodeMu.RUnlock()
+
+	if invalidHttpStatusCode != nil {
+		return fmt.Errorf("%v: %w", invalidHttpStatusCode, ErrInvalidHttpStatusCode)
+	}
+
+	// See https://github.com/gotenberg/gotenberg/issues/1021.
+	invalidResourceHttpStatusCodeMu.RLock()
+	defer invalidResourceHttpStatusCodeMu.RUnlock()
+
+	if invalidResourceHttpStatusCode != nil {
+		return fmt.Errorf("%v: %w", invalidResourceHttpStatusCode, ErrInvalidResourceHttpStatusCode)
+	}
+
+	// See https://github.com/gotenberg/gotenberg/issues/262.
+	consoleExceptionsMu.RLock()
+	defer consoleExceptionsMu.RUnlock()
+
+	if consoleExceptions != nil {
+		return fmt.Errorf("%v: %w", consoleExceptions, ErrConsoleExceptions)
+	}
+
+	// See:
+	// https://github.com/gotenberg/gotenberg/issues/913.
+	// https://github.com/gotenberg/gotenberg/issues/959.
+	loadingFailedMu.RLock()
+	defer loadingFailedMu.RUnlock()
+
+	if loadingFailed != nil {
+		return fmt.Errorf("%v: %w", loadingFailed, ErrLoadingFailed)
+	}
+
+	// See https://github.com/gotenberg/gotenberg/issues/1021.
+	if options.FailOnResourceLoadingFailed {
+		if resourceLoadingFailed != nil {
+			return fmt.Errorf("%v: %w", resourceLoadingFailed, ErrResourceLoadingFailed)
+		}
+	}
+
+	return nil
+}
+
+// Interface guards.
+var (
+	_ gotenberg.Process = (*chromiumBrowser)(nil)
+	_ browser           = (*chromiumBrowser)(nil)
+)

pkg/modules/chromium/chromium_test.go

@@ -1,491 +0,0 @@
-package chromium
-
-import (
-	"context"
-	"errors"
-	"io/ioutil"
-	"os"
-	"reflect"
-	"regexp"
-	"testing"
-	"time"
-
-	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
-	"go.uber.org/zap"
-)
-
-type ProtoModule struct {
-	descriptor func() gotenberg.ModuleDescriptor
-}
-
-func (mod ProtoModule) Descriptor() gotenberg.ModuleDescriptor {
-	return mod.descriptor()
-}
-
-type ProtoAPI struct {
-	pdf func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error
-}
-
-func (mod ProtoAPI) PDF(ctx context.Context, logger *zap.Logger, URL, outputPath string, options Options) error {
-	return mod.pdf(ctx, logger, URL, outputPath, options)
-}
-
-type ProtoPDFEngineProvider struct {
-	ProtoModule
-	pdfEngine func() (gotenberg.PDFEngine, error)
-}
-
-func (mod ProtoPDFEngineProvider) PDFEngine() (gotenberg.PDFEngine, error) {
-	return mod.pdfEngine()
-}
-
-type ProtoPDFEngine struct {
-	merge   func(_ context.Context, _ *zap.Logger, _ []string, _ string) error
-	convert func(_ context.Context, _ *zap.Logger, _, _, _ string) error
-}
-
-func (mod ProtoPDFEngine) Merge(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
-	return mod.merge(ctx, logger, inputPaths, outputPath)
-}
-
-func (mod ProtoPDFEngine) Convert(ctx context.Context, logger *zap.Logger, format, inputPath, outputPath string) error {
-	return mod.convert(ctx, logger, format, inputPath, outputPath)
-}
-
-func TestDefaultOptions(t *testing.T) {
-	actual := DefaultOptions()
-	notExpect := Options{}
-
-	if reflect.DeepEqual(actual, notExpect) {
-		t.Errorf("expected %v and got identical %v", actual, notExpect)
-	}
-}
-
-func TestChromium_Descriptor(t *testing.T) {
-	descriptor := Chromium{}.Descriptor()
-
-	actual := reflect.TypeOf(descriptor.New())
-	expect := reflect.TypeOf(new(Chromium))
-
-	if actual != expect {
-		t.Errorf("expected '%s' but got '%s'", expect, actual)
-	}
-}
-
-func TestChromium_Provision(t *testing.T) {
-	for i, tc := range []struct {
-		ctx       *gotenberg.Context
-		expectErr bool
-	}{
-		{
-			ctx: func() *gotenberg.Context {
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(Chromium).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{},
-				)
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoPDFEngineProvider }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "bar", New: func() gotenberg.Module { return mod }}
-				}
-				mod.pdfEngine = func() (gotenberg.PDFEngine, error) {
-					return nil, errors.New("foo")
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(Chromium).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct{ ProtoPDFEngineProvider }{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "bar", New: func() gotenberg.Module { return mod }}
-				}
-				mod.pdfEngine = func() (gotenberg.PDFEngine, error) {
-					return struct{ ProtoPDFEngine }{}, nil
-				}
-
-				return gotenberg.NewContext(
-					gotenberg.ParsedFlags{
-						FlagSet: new(Chromium).Descriptor().FlagSet,
-					},
-					[]gotenberg.ModuleDescriptor{
-						mod.Descriptor(),
-					},
-				)
-			}(),
-		},
-	} {
-		mod := new(Chromium)
-		err := mod.Provision(tc.ctx)
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-	}
-}
-
-func TestChromium_Validate(t *testing.T) {
-	for i, tc := range []struct {
-		binPath   string
-		expectErr bool
-	}{
-		{
-			expectErr: true,
-		},
-		{
-			binPath:   "/foo",
-			expectErr: true,
-		},
-		{
-			binPath: os.Getenv("CHROMIUM_BIN_PATH"),
-		},
-	} {
-		mod := new(Chromium)
-		mod.binPath = tc.binPath
-		err := mod.Validate()
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-	}
-}
-
-func TestChromium_Metrics(t *testing.T) {
-	metrics, err := new(Chromium).Metrics()
-	if err != nil {
-		t.Fatalf("expected no error but got: %v", err)
-	}
-
-	if len(metrics) != 1 {
-		t.Fatalf("expected %d metrics, but got %d", 1, len(metrics))
-	}
-
-	actual := metrics[0].Read()
-	if actual != 0 {
-		t.Errorf("expected %d Chromium instances, but got %f", 0, actual)
-	}
-}
-
-func TestChromium_Chromium(t *testing.T) {
-	mod := new(Chromium)
-
-	_, err := mod.Chromium()
-	if err != nil {
-		t.Errorf("expected no error but got: %v", err)
-	}
-}
-
-func TestChromium_Routes(t *testing.T) {
-	for i, tc := range []struct {
-		expectRoutes  int
-		disableRoutes bool
-	}{
-		{
-			expectRoutes: 3,
-		},
-		{
-			disableRoutes: true,
-		},
-	} {
-		mod := new(Chromium)
-		mod.disableRoutes = tc.disableRoutes
-
-		routes, err := mod.Routes()
-		if err != nil {
-			t.Fatalf("test %d: expected no error but got: %v", i, err)
-		}
-
-		if tc.expectRoutes != len(routes) {
-			t.Errorf("test %d: expected %d routes but got %d", i, tc.expectRoutes, len(routes))
-		}
-	}
-}
-
-func TestChromium_PDF(t *testing.T) {
-	for i, tc := range []struct {
-		timeout                  time.Duration
-		cancel                   context.CancelFunc
-		URL                      string
-		options                  Options
-		userAgent                string
-		incognito                bool
-		ignoreCertificateErrors  bool
-		disableWebSecurity       bool
-		allowFileAccessFromFiles bool
-		proxyServer              string
-		allowList                *regexp.Regexp
-		denyList                 *regexp.Regexp
-		disableJavaScript        bool
-		expectErr                bool
-	}{
-		{
-			URL:       "file:///tests/test/testdata/chromium/html/sample4/index.html",
-			allowList: regexp.MustCompile("file:///tmp/*"),
-			expectErr: true,
-		},
-		{
-			URL:       "file:///tests/test/testdata/chromium/html/sample4/index.html",
-			denyList:  regexp.MustCompile("file:///tests/*"),
-			expectErr: true,
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
-			options: Options{
-				UserAgent: "foo",
-			},
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample10/index.html",
-			options: Options{
-				FailOnConsoleExceptions: true,
-			},
-			expectErr: true,
-		},
-		{
-			URL:               "file:///tests/test/testdata/chromium/html/sample9/index.html",
-			disableJavaScript: true,
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
-			options: Options{
-				ExtraHTTPHeaders: map[string]string{
-					"foo": "bar",
-				},
-			},
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample11/index.html",
-			options: Options{
-				ExtraLinkTags: []LinkTag{
-					{
-						Href: "font.woff",
-					},
-					{
-						Href: "style.css",
-					},
-				},
-			},
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample8/index.html",
-			options: Options{
-				EmulatedMediaType: "foo",
-			},
-			expectErr: true,
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample8/index.html",
-			options: Options{
-				EmulatedMediaType: "screen",
-			},
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample8/index.html",
-			options: Options{
-				EmulatedMediaType: "print",
-			},
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample11/index.html",
-			options: Options{
-				ExtraScriptTags: []ScriptTag{
-					{
-						Src: "script.js",
-					},
-				},
-			},
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
-			options: Options{
-				WaitDelay: time.Duration(1) * time.Nanosecond,
-			},
-		},
-		{
-			timeout: time.Duration(3) * time.Second,
-			URL:     "file:///tests/test/testdata/chromium/html/sample2/index.html",
-			options: Options{
-				WaitWindowStatus: "foo",
-			},
-			expectErr: true,
-		},
-		{
-			timeout: time.Duration(3) * time.Second,
-			URL:     "file:///tests/test/testdata/chromium/html/sample2/index.html",
-			options: Options{
-				WaitWindowStatus: "ready",
-			},
-		},
-		{
-			timeout: time.Duration(3) * time.Second,
-			URL:     "file:///tests/test/testdata/chromium/html/sample2/index.html",
-			options: Options{
-				WaitForExpression: "window.status === 'foo'",
-			},
-			expectErr: true,
-		},
-		{
-			timeout: time.Duration(3) * time.Second,
-			URL:     "file:///tests/test/testdata/chromium/html/sample2/index.html",
-			options: Options{
-				WaitForExpression: "window.status === 'ready'",
-			},
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
-			options: Options{
-				WaitForExpression: "return undefined",
-			},
-			expectErr: true,
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
-			options: Options{
-				MarginBottom: 100,
-			},
-			expectErr: true,
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
-			options: Options{
-				PageRanges: "foo",
-			},
-			expectErr: true,
-		},
-		{
-			URL:                      "file:///tests/test/testdata/chromium/html/sample4/index.html",
-			userAgent:                "foo",
-			incognito:                true,
-			ignoreCertificateErrors:  true,
-			disableWebSecurity:       true,
-			allowFileAccessFromFiles: true,
-			proxyServer:              "foo",
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample1/index.html",
-		},
-		{
-			URL:       "file:///tests/test/testdata/chromium/html/sample3/index.html",
-			allowList: regexp.MustCompile("file:///tests/*"),
-		},
-		{
-			URL:      "file:///tests/test/testdata/chromium/html/sample3/index.html",
-			denyList: regexp.MustCompile("file:///etc/*"),
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample4/index.html",
-			options: Options{
-				HeaderTemplate: func() string {
-					b, err := ioutil.ReadFile("/tests/test/testdata/chromium/url/sample2/header.html")
-					if err != nil {
-						t.Fatalf("expected no error but got: %v", err)
-					}
-
-					return string(b)
-				}(),
-				FooterTemplate: func() string {
-					b, err := ioutil.ReadFile("/tests/test/testdata/chromium/url/sample2/footer.html")
-					if err != nil {
-						t.Fatalf("expected no error but got: %v", err)
-					}
-
-					return string(b)
-				}(),
-			},
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample5/index.html",
-		},
-		{
-			URL:                      "file:///tests/test/testdata/chromium/html/sample6/index.html",
-			allowFileAccessFromFiles: true,
-		},
-		{
-			URL: "file:///tests/test/testdata/chromium/html/sample7/index.html",
-		},
-	} {
-		func() {
-			mod := new(Chromium)
-			mod.binPath = os.Getenv("CHROMIUM_BIN_PATH")
-			mod.userAgent = tc.userAgent
-			mod.incognito = tc.incognito
-			mod.ignoreCertificateErrors = tc.ignoreCertificateErrors
-			mod.disableWebSecurity = tc.disableWebSecurity
-			mod.allowFileAccessFromFiles = tc.allowFileAccessFromFiles
-			mod.proxyServer = tc.proxyServer
-
-			if tc.allowList == nil {
-				tc.allowList = regexp.MustCompile("")
-			}
-
-			if tc.denyList == nil {
-				tc.denyList = regexp.MustCompile("")
-			}
-
-			mod.allowList = tc.allowList
-			mod.denyList = tc.denyList
-			mod.disableJavaScript = tc.disableJavaScript
-
-			outputDir, err := gotenberg.MkdirAll()
-			if err != nil {
-				t.Fatalf("test %d: expected error but got: %v", i, err)
-			}
-
-			defer func() {
-				err := os.RemoveAll(outputDir)
-				if err != nil {
-					t.Fatalf("test %d: expected no error but got: %v", i, err)
-				}
-			}()
-
-			if tc.timeout == 0 {
-				err = mod.PDF(context.Background(), zap.NewNop(), tc.URL, outputDir+"/foo.pdf", tc.options)
-			} else {
-				ctx, cancel := context.WithTimeout(context.Background(), tc.timeout)
-				defer cancel()
-
-				err = mod.PDF(ctx, zap.NewNop(), tc.URL, outputDir+"/foo.pdf", tc.options)
-			}
-
-			if tc.expectErr && err == nil {
-				t.Errorf("test %d: expected error but got: %v", i, err)
-			}
-
-			if !tc.expectErr && err != nil {
-				t.Errorf("test %d: expected no error but got: %v", i, err)
-			}
-		}()
-	}
-}
-
-// Interface guards.
-var (
-	_ gotenberg.Module            = (*ProtoModule)(nil)
-	_ API                         = (*ProtoAPI)(nil)
-	_ gotenberg.PDFEngineProvider = (*ProtoPDFEngineProvider)(nil)
-	_ gotenberg.Module            = (*ProtoPDFEngineProvider)(nil)
-	_ gotenberg.PDFEngine         = (*ProtoPDFEngine)(nil)
-)

pkg/modules/chromium/debug.go

@@ -7,21 +7,21 @@ import (
 	"go.uber.org/zap"
 )
 
-// debugLogger is wrapper around a zap.Logger which is used for debugging
+// debugLogger is wrapper around a [zap.Logger] which is used for debugging
 // Chromium.
 type debugLogger struct {
 	logger *zap.Logger
 }
 
 // Write logs the bytes in a debug message.
-func (debug debugLogger) Write(p []byte) (n int, err error) {
+func (debug *debugLogger) Write(p []byte) (n int, err error) {
 	debug.logger.Debug(string(p))
 
 	return len(p), nil
 }
 
 // Printf logs a debug message.
-func (debug debugLogger) Printf(format string, v ...interface{}) {
+func (debug *debugLogger) Printf(format string, v ...interface{}) {
 	debug.logger.Debug(fmt.Sprintf(format, v...))
 }
 

pkg/modules/chromium/debug_test.go

@@ -1,24 +0,0 @@
-package chromium
-
-import (
-	"testing"
-
-	"go.uber.org/zap"
-)
-
-func TestDebugLogger_Write(t *testing.T) {
-	actual, err := debugLogger{logger: zap.NewNop()}.Write([]byte("foo"))
-	expected := len([]byte("foo"))
-
-	if actual != expected {
-		t.Errorf("expected %d but got %d", expected, actual)
-	}
-
-	if err != nil {
-		t.Errorf("expected not error but got: %v", err)
-	}
-}
-
-func TestDebugLogger_Printf(t *testing.T) {
-	debugLogger{logger: zap.NewNop()}.Printf("%s", "foo")
-}

pkg/modules/chromium/doc.go

@@ -1,4 +1,4 @@
 // Package chromium provides a module which adds routes for converting HTML
-// documents to PDF. Other modules may also retrieve the API provided by this
+// documents to PDF. Other modules may also retrieve the [Api] provided by this
 // module.
 package chromium

pkg/modules/chromium/events.go

@@ -3,7 +3,8 @@ package chromium
 import (
 	"context"
 	"fmt"
-	"regexp"
+	"net/http"
+	"slices"
 	"sync"
 
 	"github.com/chromedp/cdproto/cdp"
@@ -12,14 +13,30 @@ import (
 	"github.com/chromedp/cdproto/page"
 	"github.com/chromedp/cdproto/runtime"
 	"github.com/chromedp/chromedp"
+	"github.com/dlclark/regexp2"
 	"go.uber.org/multierr"
 	"go.uber.org/zap"
 	"golang.org/x/sync/errgroup"
+
+	"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
 )
 
+type eventRequestPausedOptions struct {
+	allowList, denyList *regexp2.Regexp
+	extraHttpHeaders    []ExtraHttpHeader
+}
+
 // listenForEventRequestPaused listens for requests to check if they are
-// allowed or not.
-func listenForEventRequestPaused(ctx context.Context, logger *zap.Logger, allowList *regexp.Regexp, denyList *regexp.Regexp) {
+// allowed or not.  It also set the extra HTTP headers, if any.
+// See https://github.com/gotenberg/gotenberg/issues/1011.
+// TODO: https://chromedevtools.github.io/devtools-protocol/tot/Network/#method-setBlockedURLs (experimental for now).
+func listenForEventRequestPaused(ctx context.Context, logger *zap.Logger, options eventRequestPausedOptions) {
+	if len(options.extraHttpHeaders) == 0 {
+		logger.Debug("no extra HTTP headers")
+	} else {
+		logger.Debug(fmt.Sprintf("extra HTTP headers: %+v", options.extraHttpHeaders))
+	}
+
 	chromedp.ListenTarget(ctx, func(ev interface{}) {
 		switch e := ev.(type) {
 		case *fetch.EventRequestPaused:
@@ -27,41 +44,229 @@ func listenForEventRequestPaused(ctx context.Context, logger *zap.Logger, allowL
 				logger.Debug(fmt.Sprintf("event EventRequestPaused fired for '%s'", e.Request.URL))
 				allow := true
 
-				if !allowList.MatchString(e.Request.URL) {
-					logger.Warn(fmt.Sprintf("'%s' does not match the expression from the allowed list", e.Request.URL))
-					allow = false
+				deadline, ok := ctx.Deadline()
+				if !ok {
+					logger.Error("context has no deadline, cannot filter URL")
+					return
 				}
 
-				if denyList.String() != "" && denyList.MatchString(e.Request.URL) {
-					logger.Warn(fmt.Sprintf("'%s' matches the expression from the denied list", e.Request.URL))
+				err := gotenberg.FilterDeadline(options.allowList, options.denyList, e.Request.URL, deadline)
+				if err != nil {
+					logger.Warn(err.Error())
 					allow = false
 				}
 
 				cctx := chromedp.FromContext(ctx)
 				executorCtx := cdp.WithExecutor(ctx, cctx.Target)
 
-				if allow {
-					req := fetch.ContinueRequest(e.RequestID)
-					err := req.Do(executorCtx)
-
+				if !allow {
+					req := fetch.FailRequest(e.RequestID, network.ErrorReasonAccessDenied)
+					err = req.Do(executorCtx)
 					if err != nil {
-						logger.Error(fmt.Sprintf("continue request: %s", err))
+						logger.Error(fmt.Sprintf("fail request: %s", err))
 					}
-
 					return
 				}
 
-				req := fetch.FailRequest(e.RequestID, network.ErrorReasonAccessDenied)
-				err := req.Do(executorCtx)
+				req := fetch.ContinueRequest(e.RequestID)
 
+				var extraHttpHeadersToSet []ExtraHttpHeader
+				if len(options.extraHttpHeaders) > 0 {
+					// The user wants to set extra HTTP headers.
+
+					// First, we have to check if at least one header has to be
+					// set for the current request.
+					for _, header := range options.extraHttpHeaders {
+						if header.Scope == nil {
+							// Non-scoped header.
+							logger.Debug(fmt.Sprintf("extra HTTP header '%s' will be set for request URL '%s'", header.Name, e.Request.URL))
+							extraHttpHeadersToSet = append(extraHttpHeadersToSet, header)
+							continue
+						}
+
+						ok, err := header.Scope.MatchString(e.Request.URL)
+						if err != nil {
+							logger.Error(fmt.Sprintf("fail to match extra HTTP header '%s' scope with URL '%s': %s", header.Name, e.Request.URL, err))
+						} else if ok {
+							logger.Debug(fmt.Sprintf("extra HTTP header '%s' (scoped) will be set for request URL '%s'", header.Name, e.Request.URL))
+							extraHttpHeadersToSet = append(extraHttpHeadersToSet, header)
+						} else {
+							logger.Debug(fmt.Sprintf("scoped extra HTTP header '%s' (scoped) will not be set for request URL '%s'", header.Name, e.Request.URL))
+						}
+					}
+				}
+
+				if len(extraHttpHeadersToSet) > 0 {
+					logger.Debug(fmt.Sprintf("setting extra HTTP headers for request URL '%s': %+v", e.Request.URL, extraHttpHeadersToSet))
+
+					originalHeaders := e.Request.Headers
+					headers := make(map[string]string)
+
+					for key, value := range originalHeaders {
+						strValue, ok := value.(string)
+						if ok {
+							headers[key] = strValue
+						} else {
+							logger.Error(fmt.Sprintf("ignoring header '%s' for URL '%s' since it cannot be cast to a string", key, e.Request.URL))
+						}
+					}
+
+					var headersEntries []*fetch.HeaderEntry
+					for key, value := range headers {
+						headersEntries = append(headersEntries, &fetch.HeaderEntry{
+							Name:  key,
+							Value: value,
+						})
+					}
+					for _, header := range extraHttpHeadersToSet {
+						headersEntries = append(headersEntries, &fetch.HeaderEntry{
+							Name:  header.Name,
+							Value: header.Value,
+						})
+					}
+
+					req.Headers = headersEntries
+				}
+
+				err = req.Do(executorCtx)
 				if err != nil {
-					logger.Error(fmt.Sprintf("fail request: %s", err))
+					logger.Error(fmt.Sprintf("continue request: %s", err))
 				}
 			}()
 		}
 	})
 }
 
+type eventResponseReceivedOptions struct {
+	mainPageUrl                     string
+	failOnHttpStatusCodes           []int64
+	invalidHttpStatusCode           *error
+	invalidHttpStatusCodeMu         *sync.RWMutex
+	failOnResourceOnHttpStatusCode  []int64
+	invalidResourceHttpStatusCode   *error
+	invalidResourceHttpStatusCodeMu *sync.RWMutex
+}
+
+// listenForEventResponseReceived listens for an invalid HTTP status code
+// returned by the main page or by one or more resources.
+// See:
+// https://github.com/gotenberg/gotenberg/issues/613.
+// https://github.com/gotenberg/gotenberg/issues/1021.
+func listenForEventResponseReceived(
+	ctx context.Context,
+	logger *zap.Logger,
+	options eventResponseReceivedOptions,
+) {
+	for _, code := range []int64{199, 299, 399, 499, 599} {
+		if slices.Contains(options.failOnHttpStatusCodes, code) {
+			for i := code - 99; i <= code; i++ {
+				options.failOnHttpStatusCodes = append(options.failOnHttpStatusCodes, i)
+			}
+		}
+
+		if slices.Contains(options.failOnResourceOnHttpStatusCode, code) {
+			for i := code - 99; i <= code; i++ {
+				options.failOnResourceOnHttpStatusCode = append(options.failOnResourceOnHttpStatusCode, i)
+			}
+		}
+	}
+
+	chromedp.ListenTarget(ctx, func(ev interface{}) {
+		switch ev := ev.(type) {
+		case *network.EventResponseReceived:
+			if ev.Response.URL == options.mainPageUrl {
+				logger.Debug(fmt.Sprintf("event EventResponseReceived fired for main page: %+v", ev.Response))
+
+				if slices.Contains(options.failOnHttpStatusCodes, ev.Response.Status) {
+					options.invalidHttpStatusCodeMu.Lock()
+					defer options.invalidHttpStatusCodeMu.Unlock()
+
+					*options.invalidHttpStatusCode = fmt.Errorf("%d: %s", ev.Response.Status, ev.Response.StatusText)
+				}
+
+				return
+			}
+
+			logger.Debug(fmt.Sprintf("event EventResponseReceived fired for a resource: %+v", ev.Response))
+
+			if slices.Contains(options.failOnResourceOnHttpStatusCode, ev.Response.Status) {
+				options.invalidResourceHttpStatusCodeMu.Lock()
+				defer options.invalidResourceHttpStatusCodeMu.Unlock()
+
+				*options.invalidResourceHttpStatusCode = multierr.Append(
+					*options.invalidResourceHttpStatusCode,
+					fmt.Errorf("%s - %d: %s", ev.Response.URL, ev.Response.Status, http.StatusText(int(ev.Response.Status))),
+				)
+			}
+		}
+	})
+}
+
+type eventLoadingFailedOptions struct {
+	loadingFailed           *error
+	loadingFailedMu         *sync.RWMutex
+	resourceLoadingFailed   *error
+	resourceLoadingFailedMu *sync.RWMutex
+}
+
+// listenForEventLoadingFailed listens for an event indicating that the main
+// page or one or more resources failed to load.
+// See:
+// https://github.com/gotenberg/gotenberg/issues/913.
+// https://github.com/gotenberg/gotenberg/issues/959.
+// https://github.com/gotenberg/gotenberg/issues/1021.
+func listenForEventLoadingFailed(ctx context.Context, logger *zap.Logger, options eventLoadingFailedOptions) {
+	chromedp.ListenTarget(ctx, func(ev interface{}) {
+		switch ev := ev.(type) {
+		case *network.EventLoadingFailed:
+			logger.Debug(fmt.Sprintf("event EventLoadingFailed fired: %+v", ev.ErrorText))
+
+			// We are looking for common errors.
+			// TODO: sufficient?
+			errors := []string{
+				"net::ERR_CONNECTION_CLOSED",
+				"net::ERR_CONNECTION_RESET",
+				"net::ERR_CONNECTION_REFUSED",
+				"net::ERR_CONNECTION_ABORTED",
+				"net::ERR_CONNECTION_FAILED",
+				"net::ERR_NAME_NOT_RESOLVED",
+				"net::ERR_INTERNET_DISCONNECTED",
+				"net::ERR_ADDRESS_UNREACHABLE",
+				"net::ERR_BLOCKED_BY_CLIENT",
+				"net::ERR_BLOCKED_BY_RESPONSE",
+				"net::ERR_FILE_NOT_FOUND",
+			}
+			if !slices.Contains(errors, ev.ErrorText) {
+				logger.Debug(fmt.Sprintf("skip EventLoadingFailed: '%s' is not part of %+v", ev.ErrorText, errors))
+				return
+			}
+
+			if ev.Type == network.ResourceTypeDocument {
+				// Supposition: except iframe, an event loading failed with a
+				// resource type Document is about the main page.
+				logger.Debug("event EventLoadingFailed fired for main page")
+
+				options.loadingFailedMu.Lock()
+				defer options.loadingFailedMu.Unlock()
+
+				*options.loadingFailed = fmt.Errorf("%s", ev.ErrorText)
+
+				return
+			}
+
+			logger.Debug("event EventLoadingFailed fired for a resource")
+
+			options.resourceLoadingFailedMu.Lock()
+			defer options.resourceLoadingFailedMu.Unlock()
+
+			*options.resourceLoadingFailed = multierr.Append(
+				*options.resourceLoadingFailed,
+				fmt.Errorf("resource %s: %s", ev.Type, ev.ErrorText),
+			)
+		}
+	})
+}
+
 // listenForEventExceptionThrown listens for exceptions in the console and
 // appends those exceptions to the given error pointer.
 // See https://github.com/gotenberg/gotenberg/issues/262.
@@ -181,7 +386,6 @@ func waitForEventLoadingFinished(ctx context.Context, logger *zap.Logger) func()
 // completed or an error is encountered.
 func runBatch(ctx context.Context, fn ...func() error) error {
 	eg, _ := errgroup.WithContext(ctx)
-
 	for _, f := range fn {
 		eg.Go(f)
 	}

pkg/modules/chromium/mocks.go

@@ -0,0 +1,44 @@
+package chromium
+
+import (
+	"context"
+
+	"go.uber.org/zap"
+
+	"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
+)
+
+// ApiMock is a mock for the [Api] interface.
+type ApiMock struct {
+	PdfMock        func(ctx context.Context, logger *zap.Logger, url, outputPath string, options PdfOptions) error
+	ScreenshotMock func(ctx context.Context, logger *zap.Logger, url, outputPath string, options ScreenshotOptions) error
+}
+
+func (api *ApiMock) Pdf(ctx context.Context, logger *zap.Logger, url, outputPath string, options PdfOptions) error {
+	return api.PdfMock(ctx, logger, url, outputPath, options)
+}
+
+func (api *ApiMock) Screenshot(ctx context.Context, logger *zap.Logger, url, outputPath string, options ScreenshotOptions) error {
+	return api.ScreenshotMock(ctx, logger, url, outputPath, options)
+}
+
+// browserMock is a mock for the [browser] interface.
+type browserMock struct {
+	gotenberg.ProcessMock
+	pdfMock        func(ctx context.Context, logger *zap.Logger, url, outputPath string, options PdfOptions) error
+	screenshotMock func(ctx context.Context, logger *zap.Logger, url, outputPath string, options ScreenshotOptions) error
+}
+
+func (b *browserMock) pdf(ctx context.Context, logger *zap.Logger, url, outputPath string, options PdfOptions) error {
+	return b.pdfMock(ctx, logger, url, outputPath, options)
+}
+
+func (b *browserMock) screenshot(ctx context.Context, logger *zap.Logger, url, outputPath string, options ScreenshotOptions) error {
+	return b.screenshotMock(ctx, logger, url, outputPath, options)
+}
+
+// Interface guards.
+var (
+	_ Api     = (*ApiMock)(nil)
+	_ browser = (*browserMock)(nil)
+)

pkg/modules/chromium/routes.go

@@ -6,104 +6,234 @@ import (
 	"errors"
 	"fmt"
 	"html/template"
-	"io/ioutil"
 	"net/http"
 	"os"
 	"path/filepath"
+	"strconv"
 	"strings"
 	"time"
 
-	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
-	"github.com/gotenberg/gotenberg/v7/pkg/modules/api"
+	"github.com/dlclark/regexp2"
 	"github.com/labstack/echo/v4"
 	"github.com/microcosm-cc/bluemonday"
 	"github.com/russross/blackfriday/v2"
 	"go.uber.org/multierr"
+
+	"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
+	"github.com/gotenberg/gotenberg/v8/pkg/modules/api"
+	"github.com/gotenberg/gotenberg/v8/pkg/modules/pdfengines"
 )
 
-// FormDataChromiumPDFOptions creates Options form the form data. Fallback to
-// default value if the considered key is not present.
-func FormDataChromiumPDFOptions(ctx *api.Context) (*api.FormData, Options) {
+// FormDataChromiumOptions creates [Options] from the form data. Fallback to
+// the default value if the considered key is not present.
+func FormDataChromiumOptions(ctx *api.Context) (*api.FormData, Options) {
 	defaultOptions := DefaultOptions()
 
 	var (
-		failOnConsoleExceptions                          bool
-		waitDelay                                        time.Duration
-		waitWindowStatus                                 string
-		waitForExpression                                string
-		userAgent                                        string
-		extraHTTPHeaders                                 map[string]string
-		emulatedMediaType                                string
-		landscape, printBackground                       bool
-		scale, paperWidth, paperHeight                   float64
-		marginTop, marginBottom, marginLeft, marginRight float64
-		pageRanges                                       string
-		headerTemplate, footerTemplate                   string
-		preferCSSPageSize                                bool
+		skipNetworkIdleEvent          bool
+		failOnHttpStatusCodes         []int64
+		failOnResourceHttpStatusCodes []int64
+		failOnResourceLoadingFailed   bool
+		failOnConsoleExceptions       bool
+		waitDelay                     time.Duration
+		waitWindowStatus              string
+		waitForExpression             string
+		cookies                       []Cookie
+		userAgent                     string
+		extraHttpHeaders              []ExtraHttpHeader
+		emulatedMediaType             string
+		omitBackground                bool
 	)
 
 	form := ctx.FormData().
-		Bool("failOnConsoleExceptions", &failOnConsoleExceptions, defaultOptions.FailOnConsoleExceptions).
-		Duration("waitDelay", &waitDelay, defaultOptions.WaitDelay).
-		String("waitWindowStatus", &waitWindowStatus, defaultOptions.WaitWindowStatus).
-		String("waitForExpression", &waitForExpression, defaultOptions.WaitForExpression).
-		String("userAgent", &userAgent, defaultOptions.UserAgent).
-		Custom("extraHttpHeaders", func(value string) error {
+		Bool("skipNetworkIdleEvent", &skipNetworkIdleEvent, defaultOptions.SkipNetworkIdleEvent).
+		Custom("failOnHttpStatusCodes", func(value string) error {
 			if value == "" {
-				extraHTTPHeaders = defaultOptions.ExtraHTTPHeaders
-
+				failOnHttpStatusCodes = defaultOptions.FailOnHttpStatusCodes
 				return nil
 			}
 
-			err := json.Unmarshal([]byte(value), &extraHTTPHeaders)
+			err := json.Unmarshal([]byte(value), &failOnHttpStatusCodes)
 			if err != nil {
-				return fmt.Errorf("unmarshal extra HTTP headers: %w", err)
+				return fmt.Errorf("unmarshal failOnHttpStatusCodes: %w", err)
 			}
 
 			return nil
 		}).
+		Custom("failOnResourceHttpStatusCodes", func(value string) error {
+			if value == "" {
+				failOnResourceHttpStatusCodes = defaultOptions.FailOnResourceHttpStatusCodes
+				return nil
+			}
+
+			err := json.Unmarshal([]byte(value), &failOnResourceHttpStatusCodes)
+			if err != nil {
+				return fmt.Errorf("unmarshal failOnResourceHttpStatusCodes: %w", err)
+			}
+
+			return nil
+		}).
+		Bool("failOnResourceLoadingFailed", &failOnResourceLoadingFailed, defaultOptions.FailOnResourceLoadingFailed).
+		Bool("failOnConsoleExceptions", &failOnConsoleExceptions, defaultOptions.FailOnConsoleExceptions).
+		Duration("waitDelay", &waitDelay, defaultOptions.WaitDelay).
+		String("waitWindowStatus", &waitWindowStatus, defaultOptions.WaitWindowStatus).
+		String("waitForExpression", &waitForExpression, defaultOptions.WaitForExpression).
+		Custom("cookies", func(value string) error {
+			if value == "" {
+				cookies = defaultOptions.Cookies
+				return nil
+			}
+
+			err := json.Unmarshal([]byte(value), &cookies)
+			if err != nil {
+				return fmt.Errorf("unmarshal cookies: %w", err)
+			}
+
+			for i, cookie := range cookies {
+				if strings.TrimSpace(cookie.Name) == "" || strings.TrimSpace(cookie.Value) == "" || strings.TrimSpace(cookie.Domain) == "" {
+					err = multierr.Append(err, fmt.Errorf("cookie %d must have its name, value and domain set", i))
+				}
+			}
+
+			return err
+		}).
+		String("userAgent", &userAgent, defaultOptions.UserAgent).
+		Custom("extraHttpHeaders", func(value string) error {
+			if value == "" {
+				extraHttpHeaders = defaultOptions.ExtraHttpHeaders
+				return nil
+			}
+
+			var headers map[string]string
+			err := json.Unmarshal([]byte(value), &headers)
+			if err != nil {
+				return fmt.Errorf("unmarshal extraHttpHeaders: %w", err)
+			}
+
+			for k, v := range headers {
+				var scope string
+				var valueTokens []string
+				var invalidScopeToken bool
+
+				tokens := strings.Split(v, ";")
+				for _, token := range tokens {
+					if strings.HasPrefix(strings.ToLower(strings.TrimSpace(token)), "scope") {
+						tokenNoSpaces := strings.Join(strings.Fields(token), "")
+						parts := strings.SplitN(tokenNoSpaces, "=", 2)
+
+						if len(parts) == 2 && strings.ToLower(parts[0]) == "scope" && parts[1] != "" {
+							scope = parts[1]
+						} else {
+							err = multierr.Append(err, fmt.Errorf("invalid scope '%s' for header '%s'", scope, k))
+							invalidScopeToken = true
+							break
+						}
+					} else {
+						if token != "" {
+							valueTokens = append(valueTokens, token)
+						}
+					}
+				}
+
+				if invalidScopeToken {
+					continue
+				}
+
+				var scopeRegexp *regexp2.Regexp
+				if len(scope) > 0 {
+					p, errCompile := regexp2.Compile(scope, 0)
+					if errCompile != nil {
+						err = multierr.Append(err, fmt.Errorf("invalid scope regex pattern for header '%s': %w", k, errCompile))
+						continue
+					}
+					scopeRegexp = p
+				}
+
+				extraHttpHeaders = append(extraHttpHeaders, ExtraHttpHeader{
+					Name:  k,
+					Value: strings.Join(valueTokens, "; "),
+					Scope: scopeRegexp,
+				})
+			}
+
+			return err
+		}).
 		Custom("emulatedMediaType", func(value string) error {
 			if value == "" {
 				emulatedMediaType = defaultOptions.EmulatedMediaType
-
 				return nil
 			}
 
 			if value != "screen" && value != "print" {
-				return fmt.Errorf("wrong value, expected either 'screen', 'print' or empty")
+				return errors.New("wrong value, expected either 'screen', 'print' or empty")
 			}
 
 			emulatedMediaType = value
 
 			return nil
 		}).
-		Bool("landscape", &landscape, defaultOptions.Landscape).
-		Bool("printBackground", &printBackground, defaultOptions.PrintBackground).
-		Float64("scale", &scale, defaultOptions.Scale).
-		Float64("paperWidth", &paperWidth, defaultOptions.PaperWidth).
-		Float64("paperHeight", &paperHeight, defaultOptions.PaperHeight).
-		Float64("marginTop", &marginTop, defaultOptions.MarginTop).
-		Float64("marginBottom", &marginBottom, defaultOptions.MarginBottom).
-		Float64("marginLeft", &marginLeft, defaultOptions.MarginLeft).
-		Float64("marginRight", &marginRight, defaultOptions.MarginRight).
-		String("nativePageRanges", &pageRanges, defaultOptions.PageRanges).
-		Content("header.html", &headerTemplate, defaultOptions.HeaderTemplate).
-		Content("footer.html", &footerTemplate, defaultOptions.FooterTemplate).
-		Bool("preferCssPageSize", &preferCSSPageSize, defaultOptions.PreferCSSPageSize)
+		Bool("omitBackground", &omitBackground, defaultOptions.OmitBackground)
 
 	options := Options{
-		FailOnConsoleExceptions: failOnConsoleExceptions,
-		WaitDelay:               waitDelay,
-		WaitWindowStatus:        waitWindowStatus,
-		WaitForExpression:       waitForExpression,
-		UserAgent:               userAgent,
-		ExtraHTTPHeaders:        extraHTTPHeaders,
-		ExtraLinkTags:           defaultOptions.ExtraLinkTags,
-		EmulatedMediaType:       emulatedMediaType,
-		ExtraScriptTags:         defaultOptions.ExtraScriptTags,
+		SkipNetworkIdleEvent:          skipNetworkIdleEvent,
+		FailOnHttpStatusCodes:         failOnHttpStatusCodes,
+		FailOnResourceHttpStatusCodes: failOnResourceHttpStatusCodes,
+		FailOnResourceLoadingFailed:   failOnResourceLoadingFailed,
+		FailOnConsoleExceptions:       failOnConsoleExceptions,
+		WaitDelay:                     waitDelay,
+		WaitWindowStatus:              waitWindowStatus,
+		WaitForExpression:             waitForExpression,
+		Cookies:                       cookies,
+		UserAgent:                     userAgent,
+		ExtraHttpHeaders:              extraHttpHeaders,
+		EmulatedMediaType:             emulatedMediaType,
+		OmitBackground:                omitBackground,
+	}
+
+	return form, options
+}
+
+// FormDataChromiumPdfOptions creates [PdfOptions] from the form data. Fallback to
+// the default value if the considered key is not present.
+func FormDataChromiumPdfOptions(ctx *api.Context) (*api.FormData, PdfOptions) {
+	form, options := FormDataChromiumOptions(ctx)
+	defaultPdfOptions := DefaultPdfOptions()
+
+	var (
+		landscape, printBackground, singlePage           bool
+		scale, paperWidth, paperHeight                   float64
+		marginTop, marginBottom, marginLeft, marginRight float64
+		pageRanges                                       string
+		headerTemplate, footerTemplate                   string
+		preferCssPageSize                                bool
+		generateDocumentOutline                          bool
+		generateTaggedPdf                                bool
+	)
+
+	form.
+		Bool("landscape", &landscape, defaultPdfOptions.Landscape).
+		Bool("printBackground", &printBackground, defaultPdfOptions.PrintBackground).
+		Float64("scale", &scale, defaultPdfOptions.Scale).
+		Bool("singlePage", &singlePage, defaultPdfOptions.SinglePage).
+		Inches("paperWidth", &paperWidth, defaultPdfOptions.PaperWidth).
+		Inches("paperHeight", &paperHeight, defaultPdfOptions.PaperHeight).
+		Inches("marginTop", &marginTop, defaultPdfOptions.MarginTop).
+		Inches("marginBottom", &marginBottom, defaultPdfOptions.MarginBottom).
+		Inches("marginLeft", &marginLeft, defaultPdfOptions.MarginLeft).
+		Inches("marginRight", &marginRight, defaultPdfOptions.MarginRight).
+		String("nativePageRanges", &pageRanges, defaultPdfOptions.PageRanges).
+		Content("header.html", &headerTemplate, defaultPdfOptions.HeaderTemplate).
+		Content("footer.html", &footerTemplate, defaultPdfOptions.FooterTemplate).
+		Bool("preferCssPageSize", &preferCssPageSize, defaultPdfOptions.PreferCssPageSize).
+		Bool("generateDocumentOutline", &generateDocumentOutline, defaultPdfOptions.GenerateDocumentOutline).
+		Bool("generateTaggedPdf", &generateTaggedPdf, defaultPdfOptions.GenerateTaggedPdf)
+
+	pdfOptions := PdfOptions{
+		Options:                 options,
 		Landscape:               landscape,
 		PrintBackground:         printBackground,
 		Scale:                   scale,
+		SinglePage:              singlePage,
 		PaperWidth:              paperWidth,
 		PaperHeight:             paperHeight,
 		MarginTop:               marginTop,
@@ -113,61 +243,105 @@ func FormDataChromiumPDFOptions(ctx *api.Context) (*api.FormData, Options) {
 		PageRanges:              pageRanges,
 		HeaderTemplate:          headerTemplate,
 		FooterTemplate:          footerTemplate,
-		PreferCSSPageSize:       preferCSSPageSize,
+		PreferCssPageSize:       preferCssPageSize,
+		GenerateDocumentOutline: generateDocumentOutline,
+		GenerateTaggedPdf:       generateTaggedPdf,
 	}
 
-	return form, options
+	return form, pdfOptions
 }
 
-// convertURLRoute returns an api.Route which can convert a URL to PDF.
-func convertURLRoute(chromium API, engine gotenberg.PDFEngine) api.Route {
+// FormDataChromiumScreenshotOptions creates [ScreenshotOptions] from the form
+// data. Fallback to the default value if the considered key is not present.
+func FormDataChromiumScreenshotOptions(ctx *api.Context) (*api.FormData, ScreenshotOptions) {
+	form, options := FormDataChromiumOptions(ctx)
+	defaultScreenshotOptions := DefaultScreenshotOptions()
+
+	var (
+		width, height    int
+		clip             bool
+		format           string
+		quality          int
+		optimizeForSpeed bool
+	)
+
+	form.
+		Int("width", &width, defaultScreenshotOptions.Width).
+		Int("height", &height, defaultScreenshotOptions.Height).
+		Bool("clip", &clip, defaultScreenshotOptions.Clip).
+		Custom("format", func(value string) error {
+			if value == "" {
+				format = defaultScreenshotOptions.Format
+				return nil
+			}
+
+			if value != "png" && value != "jpeg" && value != "webp" {
+				return fmt.Errorf("wrong value, expected either 'png', 'jpeg' or 'webp'")
+			}
+
+			format = value
+
+			return nil
+		}).
+		Custom("quality", func(value string) error {
+			if value == "" {
+				quality = defaultScreenshotOptions.Quality
+				return nil
+			}
+
+			intValue, err := strconv.Atoi(value)
+			if err != nil {
+				return err
+			}
+
+			if intValue < 0 {
+				return errors.New("value is negative")
+			}
+
+			if intValue > 100 {
+				return errors.New("value is superior to 100")
+			}
+
+			quality = intValue
+			return nil
+		}).
+		Bool("optimizeForSpeed", &optimizeForSpeed, defaultScreenshotOptions.OptimizeForSpeed)
+
+	screenshotOptions := ScreenshotOptions{
+		Options:          options,
+		Width:            width,
+		Height:           height,
+		Clip:             clip,
+		Format:           format,
+		Quality:          quality,
+		OptimizeForSpeed: optimizeForSpeed,
+	}
+
+	return form, screenshotOptions
+}
+
+// convertUrlRoute returns an [api.Route] which can convert a URL to PDF.
+func convertUrlRoute(chromium Api, engine gotenberg.PdfEngine) api.Route {
 	return api.Route{
 		Method:      http.MethodPost,
 		Path:        "/forms/chromium/convert/url",
 		IsMultipart: true,
 		Handler: func(c echo.Context) error {
 			ctx := c.Get("context").(*api.Context)
-			form, options := FormDataChromiumPDFOptions(ctx)
-
-			var (
-				URL       string
-				PDFformat string
-			)
+			form, options := FormDataChromiumPdfOptions(ctx)
+			mode := pdfengines.FormDataPdfSplitMode(form, false)
+			pdfFormats := pdfengines.FormDataPdfFormats(form)
+			metadata := pdfengines.FormDataPdfMetadata(form, false)
 
+			var url string
 			err := form.
-				MandatoryString("url", &URL).
-				String("pdfFormat", &PDFformat, "").
-				Custom("extraLinkTags", func(value string) error {
-					if value == "" {
-						return nil
-					}
-
-					err := json.Unmarshal([]byte(value), &options.ExtraLinkTags)
-					if err != nil {
-						return fmt.Errorf("unmarshal extra link tags: %w", err)
-					}
-
-					return nil
-				}).
-				Custom("extraScriptTags", func(value string) error {
-					if value == "" {
-						return nil
-					}
-
-					err := json.Unmarshal([]byte(value), &options.ExtraScriptTags)
-					if err != nil {
-						return fmt.Errorf("unmarshal extra script tags: %w", err)
-					}
-
-					return nil
-				}).
+				MandatoryString("url", &url).
 				Validate()
-
 			if err != nil {
 				return fmt.Errorf("validate form data: %w", err)
 			}
 
-			err = convertURL(ctx, chromium, engine, URL, PDFformat, options)
+			err = convertUrl(ctx, chromium, engine, url, options, mode, pdfFormats, metadata)
 			if err != nil {
 				return fmt.Errorf("convert URL to PDF: %w", err)
 			}
@@ -177,33 +351,59 @@ func convertURLRoute(chromium API, engine gotenberg.PDFEngine) api.Route {
 	}
 }
 
-// convertHTMLRoute returns an api.Route which can convert an HTML file to PDF.
-func convertHTMLRoute(chromium API, engine gotenberg.PDFEngine) api.Route {
+// screenshotUrlRoute returns an [api.Route] which can take a screenshot from a
+// URL.
+func screenshotUrlRoute(chromium Api) api.Route {
+	return api.Route{
+		Method:      http.MethodPost,
+		Path:        "/forms/chromium/screenshot/url",
+		IsMultipart: true,
+		Handler: func(c echo.Context) error {
+			ctx := c.Get("context").(*api.Context)
+			form, options := FormDataChromiumScreenshotOptions(ctx)
+
+			var url string
+			err := form.
+				MandatoryString("url", &url).
+				Validate()
+			if err != nil {
+				return fmt.Errorf("validate form data: %w", err)
+			}
+
+			err = screenshotUrl(ctx, chromium, url, options)
+			if err != nil {
+				return fmt.Errorf("URL screenshot: %w", err)
+			}
+
+			return nil
+		},
+	}
+}
+
+// convertHtmlRoute returns an [api.Route] which can convert an HTML file to
+// PDF.
+func convertHtmlRoute(chromium Api, engine gotenberg.PdfEngine) api.Route {
 	return api.Route{
 		Method:      http.MethodPost,
 		Path:        "/forms/chromium/convert/html",
 		IsMultipart: true,
 		Handler: func(c echo.Context) error {
 			ctx := c.Get("context").(*api.Context)
-			form, options := FormDataChromiumPDFOptions(ctx)
-
-			var (
-				inputPath string
-				PDFformat string
-			)
+			form, options := FormDataChromiumPdfOptions(ctx)
+			mode := pdfengines.FormDataPdfSplitMode(form, false)
+			pdfFormats := pdfengines.FormDataPdfFormats(form)
+			metadata := pdfengines.FormDataPdfMetadata(form, false)
 
+			var inputPath string
 			err := form.
 				MandatoryPath("index.html", &inputPath).
-				String("pdfFormat", &PDFformat, "").
 				Validate()
-
 			if err != nil {
 				return fmt.Errorf("validate form data: %w", err)
 			}
 
-			URL := fmt.Sprintf("file://%s", inputPath)
-
-			err = convertURL(ctx, chromium, engine, URL, PDFformat, options)
+			url := fmt.Sprintf("file://%s", inputPath)
+			err = convertUrl(ctx, chromium, engine, url, options, mode, pdfFormats, metadata)
 			if err != nil {
 				return fmt.Errorf("convert HTML to PDF: %w", err)
 			}
@@ -213,108 +413,69 @@ func convertHTMLRoute(chromium API, engine gotenberg.PDFEngine) api.Route {
 	}
 }
 
-// convertMarkdownRoute returns an api.Route which can convert markdown files
+// screenshotHtmlRoute returns an [api.Route] which can take a screenshot from
+// an HTML file.
+func screenshotHtmlRoute(chromium Api) api.Route {
+	return api.Route{
+		Method:      http.MethodPost,
+		Path:        "/forms/chromium/screenshot/html",
+		IsMultipart: true,
+		Handler: func(c echo.Context) error {
+			ctx := c.Get("context").(*api.Context)
+			form, options := FormDataChromiumScreenshotOptions(ctx)
+
+			var inputPath string
+			err := form.
+				MandatoryPath("index.html", &inputPath).
+				Validate()
+			if err != nil {
+				return fmt.Errorf("validate form data: %w", err)
+			}
+
+			url := fmt.Sprintf("file://%s", inputPath)
+			err = screenshotUrl(ctx, chromium, url, options)
+			if err != nil {
+				return fmt.Errorf("HTML screenshot: %w", err)
+			}
+
+			return nil
+		},
+	}
+}
+
+// convertMarkdownRoute returns an [api.Route] which can convert markdown files
 // to PDF.
-func convertMarkdownRoute(chromium API, engine gotenberg.PDFEngine) api.Route {
+func convertMarkdownRoute(chromium Api, engine gotenberg.PdfEngine) api.Route {
 	return api.Route{
 		Method:      http.MethodPost,
 		Path:        "/forms/chromium/convert/markdown",
 		IsMultipart: true,
 		Handler: func(c echo.Context) error {
 			ctx := c.Get("context").(*api.Context)
-			form, options := FormDataChromiumPDFOptions(ctx)
+			form, options := FormDataChromiumPdfOptions(ctx)
+			mode := pdfengines.FormDataPdfSplitMode(form, false)
+			pdfFormats := pdfengines.FormDataPdfFormats(form)
+			metadata := pdfengines.FormDataPdfMetadata(form, false)
 
 			var (
 				inputPath     string
 				markdownPaths []string
-				PDFformat     string
 			)
 
 			err := form.
 				MandatoryPath("index.html", &inputPath).
 				MandatoryPaths([]string{".md"}, &markdownPaths).
-				String("pdfFormat", &PDFformat, "").
 				Validate()
-
 			if err != nil {
 				return fmt.Errorf("validate form data: %w", err)
 			}
 
-			// We have to convert each markdown file referenced in the HTML
-			// file to... HTML. Thanks to the "html/template" package, we are
-			// able to provide the "toHTML" function which the user may call
-			// directly inside the HTML file.
-
-			var markdownFilesNotFoundErr error
-
-			tmpl, err := template.
-				New(filepath.Base(inputPath)).
-				Funcs(template.FuncMap{
-					"toHTML": func(filename string) (template.HTML, error) {
-						var path string
-
-						for _, markdownPath := range markdownPaths {
-							markdownFilename := filepath.Base(markdownPath)
-
-							if filename == markdownFilename {
-								path = markdownPath
-								break
-							}
-						}
-
-						if path == "" {
-							markdownFilesNotFoundErr = multierr.Append(
-								markdownFilesNotFoundErr,
-								fmt.Errorf("'%s'", filename),
-							)
-
-							return "", nil
-						}
-
-						b, err := ioutil.ReadFile(path)
-						if err != nil {
-							return "", fmt.Errorf("read markdown file '%s': %w", filename, err)
-						}
-
-						unsafe := blackfriday.Run(b)
-						sanitized := bluemonday.UGCPolicy().SanitizeBytes(unsafe)
-
-						// #nosec
-						return template.HTML(sanitized), nil
-					},
-				}).ParseFiles(inputPath)
-
+			url, err := markdownToHtml(ctx, inputPath, markdownPaths)
 			if err != nil {
-				return fmt.Errorf("parse template file: %w", err)
+				return fmt.Errorf("transform markdown file(s) to HTML: %w", err)
 			}
 
-			var buffer bytes.Buffer
-
-			err = tmpl.Execute(&buffer, &struct{}{})
-			if err != nil {
-				return fmt.Errorf("execute template: %w", err)
-			}
-
-			if markdownFilesNotFoundErr != nil {
-				return api.WrapError(
-					fmt.Errorf("markdown files not found: %w", markdownFilesNotFoundErr),
-					api.NewSentinelHTTPError(
-						http.StatusBadRequest,
-						fmt.Sprintf("Markdown file(s) not found: %s", markdownFilesNotFoundErr),
-					),
-				)
-			}
-
-			inputPath = ctx.GeneratePath(".html")
-
-			err = os.WriteFile(inputPath, buffer.Bytes(), 0600)
-			if err != nil {
-				return fmt.Errorf("write template result: %w", err)
-			}
-
-			URL := fmt.Sprintf("file://%s", inputPath)
-
-			err = convertURL(ctx, chromium, engine, URL, PDFformat, options)
+			err = convertUrl(ctx, chromium, engine, url, options, mode, pdfFormats, metadata)
 			if err != nil {
 				return fmt.Errorf("convert markdown to PDF: %w", err)
 			}
@@ -324,36 +485,135 @@ func convertMarkdownRoute(chromium API, engine gotenberg.PDFEngine) api.Route {
 	}
 }
 
-// convertURL is a stub which is called by the other methods of this file.
-func convertURL(ctx *api.Context, chromium API, engine gotenberg.PDFEngine, URL, PDFformat string, options Options) error {
-	outputPath := ctx.GeneratePath(".pdf")
+// screenshotMarkdownRoute returns an [api.Route] which can take a screenshot
+// from Markdown files.
+func screenshotMarkdownRoute(chromium Api) api.Route {
+	return api.Route{
+		Method:      http.MethodPost,
+		Path:        "/forms/chromium/screenshot/markdown",
+		IsMultipart: true,
+		Handler: func(c echo.Context) error {
+			ctx := c.Get("context").(*api.Context)
+			form, options := FormDataChromiumScreenshotOptions(ctx)
 
-	err := chromium.PDF(ctx, ctx.Log(), URL, outputPath, options)
-	if err != nil {
-
-		if errors.Is(err, ErrURLNotAuthorized) {
-			return api.WrapError(
-				fmt.Errorf("convert to PDF: %w", err),
-				api.NewSentinelHTTPError(
-					http.StatusForbidden,
-					fmt.Sprintf("'%s' does not match the authorized URLs", URL),
-				),
+			var (
+				inputPath     string
+				markdownPaths []string
 			)
-		}
 
-		if errors.Is(err, ErrInvalidEvaluationExpression) {
-			if options.WaitForExpression == "" {
-				// We do not expect the 'waitWindowStatus' form field to return
-				// an ErrInvalidEvaluationExpression error. In such a scenario,
-				// we return a 500.
-				return fmt.Errorf("convert to PDF: %w", err)
+			err := form.
+				MandatoryPath("index.html", &inputPath).
+				MandatoryPaths([]string{".md"}, &markdownPaths).
+				Validate()
+			if err != nil {
+				return fmt.Errorf("validate form data: %w", err)
 			}
 
+			url, err := markdownToHtml(ctx, inputPath, markdownPaths)
+			if err != nil {
+				return fmt.Errorf("transform markdown file(s) to HTML: %w", err)
+			}
+
+			err = screenshotUrl(ctx, chromium, url, options)
+			if err != nil {
+				return fmt.Errorf("markdown screenshot: %w", err)
+			}
+
+			return nil
+		},
+	}
+}
+
+func markdownToHtml(ctx *api.Context, inputPath string, markdownPaths []string) (string, error) {
+	// We have to convert each Markdown file referenced in the HTML
+	// file to... HTML. Thanks to the "html/template" package, we are
+	// able to provide the "toHTML" function which the user may call
+	// directly inside the HTML file.
+
+	var markdownFilesNotFoundErr error
+
+	tmpl, err := template.
+		New(filepath.Base(inputPath)).
+		Funcs(template.FuncMap{
+			"toHTML": func(filename string) (template.HTML, error) {
+				var path string
+
+				for _, markdownPath := range markdownPaths {
+					markdownFilename := filepath.Base(markdownPath)
+
+					if filename == markdownFilename {
+						path = markdownPath
+						break
+					}
+				}
+
+				if path == "" {
+					markdownFilesNotFoundErr = multierr.Append(
+						markdownFilesNotFoundErr,
+						fmt.Errorf("'%s'", filename),
+					)
+
+					return "", nil
+				}
+
+				b, err := os.ReadFile(path)
+				if err != nil {
+					return "", fmt.Errorf("read markdown file '%s': %w", filename, err)
+				}
+
+				unsafe := blackfriday.Run(b)
+				sanitized := bluemonday.UGCPolicy().SanitizeBytes(unsafe)
+
+				// #nosec
+				return template.HTML(sanitized), nil
+			},
+		}).ParseFiles(inputPath)
+	if err != nil {
+		return "", fmt.Errorf("parse template file: %w", err)
+	}
+
+	var buffer bytes.Buffer
+
+	err = tmpl.Execute(&buffer, &struct{}{})
+	if err != nil {
+		return "", fmt.Errorf("execute template: %w", err)
+	}
+
+	if markdownFilesNotFoundErr != nil {
+		return "", api.WrapError(
+			fmt.Errorf("markdown files not found: %w", markdownFilesNotFoundErr),
+			api.NewSentinelHttpError(
+				http.StatusBadRequest,
+				fmt.Sprintf("Markdown file(s) not found: %s", markdownFilesNotFoundErr),
+			),
+		)
+	}
+
+	inputPath = ctx.GeneratePath(".html")
+
+	err = os.WriteFile(inputPath, buffer.Bytes(), 0o600)
+	if err != nil {
+		return "", fmt.Errorf("write template result: %w", err)
+	}
+
+	return fmt.Sprintf("file://%s", inputPath), nil
+}
+
+func convertUrl(ctx *api.Context, chromium Api, engine gotenberg.PdfEngine, url string, options PdfOptions, mode gotenberg.SplitMode, pdfFormats gotenberg.PdfFormats, metadata map[string]interface{}) error {
+	outputPath := ctx.GeneratePath(".pdf")
+	// See https://github.com/gotenberg/gotenberg/issues/1130.
+	filename := ctx.OutputFilename(outputPath)
+	outputPath = ctx.GeneratePathFromFilename(filename)
+
+	err := chromium.Pdf(ctx, ctx.Log(), url, outputPath, options)
+	err = handleChromiumError(err, options.Options)
+	if err != nil {
+		if errors.Is(err, ErrOmitBackgroundWithoutPrintBackground) {
 			return api.WrapError(
 				fmt.Errorf("convert to PDF: %w", err),
-				api.NewSentinelHTTPError(
+				api.NewSentinelHttpError(
 					http.StatusBadRequest,
-					fmt.Sprintf("The expression '%s' (waitForExpression) returned an exception or undefined", options.WaitForExpression),
+					"omitBackground requires printBackground set to true",
 				),
 			)
 		}
@@ -361,7 +621,7 @@ func convertURL(ctx *api.Context, chromium API, engine gotenberg.PDFEngine, URL,
 		if errors.Is(err, ErrInvalidPrinterSettings) {
 			return api.WrapError(
 				fmt.Errorf("convert to PDF: %w", err),
-				api.NewSentinelHTTPError(
+				api.NewSentinelHttpError(
 					http.StatusBadRequest,
 					"Chromium does not handle the provided settings; please check for aberrant form values",
 				),
@@ -371,52 +631,62 @@ func convertURL(ctx *api.Context, chromium API, engine gotenberg.PDFEngine, URL,
 		if errors.Is(err, ErrPageRangesSyntaxError) {
 			return api.WrapError(
 				fmt.Errorf("convert to PDF: %w", err),
-				api.NewSentinelHTTPError(
+				api.NewSentinelHttpError(
 					http.StatusBadRequest,
 					fmt.Sprintf("Chromium does not handle the page ranges '%s' (nativePageRanges)", options.PageRanges),
 				),
 			)
 		}
 
-		if errors.Is(err, ErrConsoleExceptions) {
-			return api.WrapError(
-				fmt.Errorf("convert to PDF: %w", err),
-				api.NewSentinelHTTPError(
-					http.StatusConflict,
-					fmt.Sprintf("Chromium console exceptions:\n %s", strings.ReplaceAll(err.Error(), ErrConsoleExceptions.Error(), "")),
-				),
-			)
-		}
-
 		return fmt.Errorf("convert to PDF: %w", err)
 	}
 
-	// So far so good, the URL has been converted to PDF.
-	// Now, let's check if the client want to convert this result PDF
-	// to a specific PDF format.
+	outputPaths, err := pdfengines.SplitPdfStub(ctx, engine, mode, []string{outputPath})
+	if err != nil {
+		return fmt.Errorf("split PDF: %w", err)
+	}
 
-	if PDFformat != "" {
-		convertInputPath := outputPath
-		convertOutputPath := ctx.GeneratePath(".pdf")
+	convertOutputPaths, err := pdfengines.ConvertStub(ctx, engine, pdfFormats, outputPaths)
+	if err != nil {
+		return fmt.Errorf("convert PDF(s): %w", err)
+	}
 
-		err = engine.Convert(ctx, ctx.Log(), PDFformat, convertInputPath, convertOutputPath)
+	err = pdfengines.WriteMetadataStub(ctx, engine, metadata, convertOutputPaths)
+	if err != nil {
+		return fmt.Errorf("write metadata: %w", err)
+	}
 
-		if err != nil {
-			if errors.Is(err, gotenberg.ErrPDFFormatNotAvailable) {
-				return api.WrapError(
-					fmt.Errorf("convert PDF: %w", err),
-					api.NewSentinelHTTPError(
-						http.StatusBadRequest,
-						fmt.Sprintf("At least one PDF engine does not handle the PDF format '%s' (pdfFormat), while other have failed to convert for other reasons", PDFformat),
-					),
-				)
+	zeroValuedSplitMode := gotenberg.SplitMode{}
+	zeroValuedPdfFormats := gotenberg.PdfFormats{}
+	if mode != zeroValuedSplitMode && pdfFormats != zeroValuedPdfFormats {
+		// The PDF has been split and split parts have been converted to a
+		// specific format. We want to keep the split naming.
+		for i, convertOutputPath := range convertOutputPaths {
+			err = ctx.Rename(convertOutputPath, outputPaths[i])
+			if err != nil {
+				return fmt.Errorf("rename output path: %w", err)
 			}
-
-			return fmt.Errorf("convert PDF: %w", err)
 		}
+	} else {
+		outputPaths = convertOutputPaths
+	}
 
-		// Important: the output path is now the converted file.
-		outputPath = convertOutputPath
+	err = ctx.AddOutputPaths(outputPaths...)
+	if err != nil {
+		return fmt.Errorf("add output paths: %w", err)
+	}
+
+	return nil
+}
+
+func screenshotUrl(ctx *api.Context, chromium Api, url string, options ScreenshotOptions) error {
+	ext := fmt.Sprintf(".%s", options.Format)
+	outputPath := ctx.GeneratePath(ext)
+
+	err := chromium.Screenshot(ctx, ctx.Log(), url, outputPath, options)
+	err = handleChromiumError(err, options.Options)
+	if err != nil {
+		return fmt.Errorf("screenshot: %w", err)
 	}
 
 	err = ctx.AddOutputPaths(outputPath)
@@ -426,3 +696,78 @@ func convertURL(ctx *api.Context, chromium API, engine gotenberg.PDFEngine, URL,
 
 	return nil
 }
+
+func handleChromiumError(err error, options Options) error {
+	if err == nil {
+		return nil
+	}
+
+	if errors.Is(err, ErrInvalidEvaluationExpression) {
+		if options.WaitForExpression == "" {
+			// We do not expect the 'waitWindowStatus' form field to return
+			// an ErrInvalidEvaluationExpression error. In such a scenario,
+			// we return a 500.
+			return err
+		}
+
+		return api.WrapError(
+			err,
+			api.NewSentinelHttpError(
+				http.StatusBadRequest,
+				fmt.Sprintf("The expression '%s' (waitForExpression) returned an exception or undefined", options.WaitForExpression),
+			),
+		)
+	}
+
+	if errors.Is(err, ErrInvalidHttpStatusCode) {
+		return api.WrapError(
+			err,
+			api.NewSentinelHttpError(
+				http.StatusConflict,
+				fmt.Sprintf("Invalid HTTP status code from the main page: %s", strings.ReplaceAll(err.Error(), fmt.Sprintf(": %s", ErrInvalidHttpStatusCode.Error()), "")),
+			),
+		)
+	}
+
+	if errors.Is(err, ErrInvalidResourceHttpStatusCode) {
+		return api.WrapError(
+			err,
+			api.NewSentinelHttpError(
+				http.StatusConflict,
+				fmt.Sprintf("Invalid HTTP status code from resources:\n%s", strings.ReplaceAll(err.Error(), fmt.Sprintf(": %s", ErrInvalidResourceHttpStatusCode.Error()), "")),
+			),
+		)
+	}
+
+	if errors.Is(err, ErrConsoleExceptions) {
+		return api.WrapError(
+			err,
+			api.NewSentinelHttpError(
+				http.StatusConflict,
+				fmt.Sprintf("Chromium console exceptions:\n%s", strings.ReplaceAll(err.Error(), ErrConsoleExceptions.Error(), "")),
+			),
+		)
+	}
+
+	if errors.Is(err, ErrLoadingFailed) {
+		return api.WrapError(
+			err,
+			api.NewSentinelHttpError(
+				http.StatusBadRequest,
+				fmt.Sprintf("Chromium returned %v", err),
+			),
+		)
+	}
+
+	if errors.Is(err, ErrResourceLoadingFailed) {
+		return api.WrapError(
+			err,
+			api.NewSentinelHttpError(
+				http.StatusConflict,
+				fmt.Sprintf("Chromium failed to load resources: %v", strings.ReplaceAll(err.Error(), fmt.Sprintf(": %s", ErrResourceLoadingFailed.Error()), "")),
+			),
+		)
+	}
+
+	return err
+}

pkg/modules/chromium/routes_test.go

@@ -1,890 +0,0 @@
-package chromium
-
-import (
-	"context"
-	"errors"
-	"net/http"
-	"os"
-	"reflect"
-	"testing"
-
-	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
-	"github.com/gotenberg/gotenberg/v7/pkg/modules/api"
-	"github.com/labstack/echo/v4"
-	"go.uber.org/zap"
-)
-
-func TestFormDataChromiumPDFOptions(t *testing.T) {
-	for i, tc := range []struct {
-		ctx     *api.ContextMock
-		options Options
-	}{
-		{
-			ctx:     &api.ContextMock{Context: &api.Context{}},
-			options: DefaultOptions(),
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"extraHttpHeaders": {
-						"foo",
-					},
-				})
-
-				return ctx
-			}(),
-			options: DefaultOptions(),
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"extraHttpHeaders": {
-						`{"foo":"bar"}`,
-					},
-				})
-
-				return ctx
-			}(),
-			options: func() Options {
-				options := DefaultOptions()
-				options.ExtraHTTPHeaders = map[string]string{
-					"foo": "bar",
-				}
-
-				return options
-			}(),
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"extraHttpHeaders": {
-						"foo",
-					},
-				})
-
-				return ctx
-			}(),
-			options: DefaultOptions(),
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"emulatedMediaType": {
-						"foo",
-					},
-				})
-
-				return ctx
-			}(),
-			options: DefaultOptions(),
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"emulatedMediaType": {
-						"screen",
-					},
-				})
-
-				return ctx
-			}(),
-			options: func() Options {
-				options := DefaultOptions()
-				options.EmulatedMediaType = "screen"
-
-				return options
-			}(),
-		},
-	} {
-		_, actual := FormDataChromiumPDFOptions(tc.ctx.Context)
-
-		if !reflect.DeepEqual(actual, tc.options) {
-			t.Errorf("test %d: expected %+v but got: %+v", i, tc.options, actual)
-		}
-	}
-}
-
-func TestConvertURLHandler(t *testing.T) {
-	for i, tc := range []struct {
-		ctx                    *api.ContextMock
-		api                    API
-		expectErr              bool
-		expectHTTPErr          bool
-		expectHTTPStatus       int
-		expectOutputPathsCount int
-	}{
-		{
-			ctx:              &api.ContextMock{Context: &api.Context{}},
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"url": {
-						"",
-					},
-				})
-
-				return ctx
-			}(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"url": {
-						"foo",
-					},
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return errors.New("foo")
-				}
-
-				return chromiumAPI
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"url": {
-						"foo",
-					},
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			expectOutputPathsCount: 1,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"url": {
-						"foo",
-					},
-					"extraLinkTags": {
-						"foo",
-					},
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"url": {
-						"foo",
-					},
-					"extraScriptTags": {
-						"foo",
-					},
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetValues(map[string][]string{
-					"url": {
-						"foo",
-					},
-					"extraLinkTags": {
-						`[{"href":"https://cdn.foo/foo.css"},{"href":"https://cdn.bar/bar.css"}]`,
-					},
-					"extraScriptTags": {
-						`[{"src":"https://cdn.foo/foo.js"},{"src":"https://cdn.bar/bar.js"}]`,
-					},
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			expectOutputPathsCount: 1,
-		},
-	} {
-		c := echo.New().NewContext(nil, nil)
-		c.Set("context", tc.ctx.Context)
-
-		err := convertURLRoute(tc.api, nil).Handler(c)
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-
-		var httpErr api.HTTPError
-		isHTTPErr := errors.As(err, &httpErr)
-
-		if tc.expectHTTPErr && !isHTTPErr {
-			t.Errorf("test %d: expected HTTP error but got: %v", i, err)
-		}
-
-		if !tc.expectHTTPErr && isHTTPErr {
-			t.Errorf("test %d: expected no HTTP error but got one: %v", i, httpErr)
-		}
-
-		if err != nil && tc.expectHTTPErr && isHTTPErr {
-			status, _ := httpErr.HTTPError()
-			if status != tc.expectHTTPStatus {
-				t.Errorf("test %d: expected %d HTTP status code but got %d", i, tc.expectHTTPStatus, status)
-			}
-		}
-
-		if tc.expectOutputPathsCount != len(tc.ctx.OutputPaths()) {
-			t.Errorf("test %d: expected %d output paths but got %d", i, tc.expectOutputPathsCount, len(tc.ctx.OutputPaths()))
-		}
-	}
-}
-
-func TestConvertHTMLHandler(t *testing.T) {
-	for i, tc := range []struct {
-		ctx                    *api.ContextMock
-		api                    API
-		expectErr              bool
-		expectHTTPErr          bool
-		expectHTTPStatus       int
-		expectOutputPathsCount int
-	}{
-		{
-			ctx:              &api.ContextMock{Context: &api.Context{}},
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetFiles(map[string]string{
-					"foo.html": "/foo/foo.html",
-				})
-
-				return ctx
-			}(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetFiles(map[string]string{
-					"index.html": "/foo/foo.html",
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return errors.New("foo")
-				}
-
-				return chromiumAPI
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetFiles(map[string]string{
-					"index.html": "/foo/foo.html",
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			expectOutputPathsCount: 1,
-		},
-	} {
-		c := echo.New().NewContext(nil, nil)
-		c.Set("context", tc.ctx.Context)
-
-		err := convertHTMLRoute(tc.api, nil).Handler(c)
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-
-		var httpErr api.HTTPError
-		isHTTPErr := errors.As(err, &httpErr)
-
-		if tc.expectHTTPErr && !isHTTPErr {
-			t.Errorf("test %d: expected HTTP error but got: %v", i, err)
-		}
-
-		if !tc.expectHTTPErr && isHTTPErr {
-			t.Errorf("test %d: expected no HTTP error but got one: %v", i, httpErr)
-		}
-
-		if err != nil && tc.expectHTTPErr && isHTTPErr {
-			status, _ := httpErr.HTTPError()
-			if status != tc.expectHTTPStatus {
-				t.Errorf("test %d: expected %d HTTP status code but got %d", i, tc.expectHTTPStatus, status)
-			}
-		}
-
-		if tc.expectOutputPathsCount != len(tc.ctx.OutputPaths()) {
-			t.Errorf("test %d: expected %d output paths but got %d", i, tc.expectOutputPathsCount, len(tc.ctx.OutputPaths()))
-		}
-	}
-}
-
-func TestConvertMarkdownHandler(t *testing.T) {
-	for i, tc := range []struct {
-		ctx                    *api.ContextMock
-		api                    API
-		outputDir              string
-		expectErr              bool
-		expectHTTPErr          bool
-		expectHTTPStatus       int
-		expectOutputPathsCount int
-	}{
-		{
-			ctx:              &api.ContextMock{Context: &api.Context{}},
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetFiles(map[string]string{
-					"foo.html": "/foo/foo.html",
-				})
-
-				return ctx
-			}(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetFiles(map[string]string{
-					"index.html": "/foo/foo.html",
-				})
-
-				return ctx
-			}(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetFiles(map[string]string{
-					"index.html":  "/foo/foo.html",
-					"markdown.md": "/foo/markdown.md",
-				})
-
-				return ctx
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetFiles(map[string]string{
-					"index.html":   "/tests/test/testdata/chromium/markdown/sample2/index.html",
-					"markdown1.md": "/foo/markdown1.md",
-				})
-
-				return ctx
-			}(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetFiles(map[string]string{
-					"index.html":   "/tests/test/testdata/chromium/markdown/sample1/index.html",
-					"markdown1.md": "/foo/markdown1.md",
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return errors.New("foo")
-				}
-
-				return chromiumAPI
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetFiles(map[string]string{
-					"index.html":   "/tests/test/testdata/chromium/markdown/sample1/index.html",
-					"markdown1.md": "/tests/test/testdata/chromium/markdown/sample1/markdown1.md",
-					"markdown2.md": "/tests/test/testdata/chromium/markdown/sample1/markdown2.md",
-					"markdown3.md": "/tests/test/testdata/chromium/markdown/sample1/markdown3.md",
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return errors.New("foo")
-				}
-
-				return chromiumAPI
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-
-				ctx.SetDirPath("/tmp/foo")
-				ctx.SetFiles(map[string]string{
-					"index.html":   "/tests/test/testdata/chromium/markdown/sample1/index.html",
-					"markdown1.md": "/tests/test/testdata/chromium/markdown/sample1/markdown1.md",
-					"markdown2.md": "/tests/test/testdata/chromium/markdown/sample1/markdown2.md",
-					"markdown3.md": "/tests/test/testdata/chromium/markdown/sample1/markdown3.md",
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return errors.New("foo")
-				}
-
-				return chromiumAPI
-			}(),
-			outputDir: "/tmp/foo",
-			expectErr: true,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-
-				ctx.SetDirPath("/tmp/foo")
-				ctx.SetFiles(map[string]string{
-					"index.html":   "/tests/test/testdata/chromium/markdown/sample1/index.html",
-					"markdown1.md": "/tests/test/testdata/chromium/markdown/sample1/markdown1.md",
-					"markdown2.md": "/tests/test/testdata/chromium/markdown/sample1/markdown2.md",
-					"markdown3.md": "/tests/test/testdata/chromium/markdown/sample1/markdown3.md",
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			outputDir:              "/tmp/foo",
-			expectOutputPathsCount: 1,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-
-				ctx.SetDirPath("/tmp/foo")
-				ctx.SetFiles(map[string]string{
-					"index.html":   "/tests/test/testdata/chromium/markdown/sample3/index.html",
-					"markdown1.md": "/tests/test/testdata/chromium/markdown/sample3/markdown.md",
-				})
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			outputDir:              "/tmp/foo",
-			expectOutputPathsCount: 1,
-		},
-	} {
-		func() {
-			if tc.outputDir != "" {
-				err := os.MkdirAll(tc.outputDir, 0755)
-
-				if err != nil {
-					t.Fatalf("test %d: expected error but got: %v", i, err)
-				}
-
-				defer func() {
-					err := os.RemoveAll(tc.outputDir)
-					if err != nil {
-						t.Fatalf("test %d: expected no error but got: %v", i, err)
-					}
-				}()
-			}
-
-			c := echo.New().NewContext(nil, nil)
-			c.Set("context", tc.ctx.Context)
-
-			err := convertMarkdownRoute(tc.api, nil).Handler(c)
-
-			if tc.expectErr && err == nil {
-				t.Errorf("test %d: expected error but got: %v", i, err)
-			}
-
-			if !tc.expectErr && err != nil {
-				t.Errorf("test %d: expected no error but got: %v", i, err)
-			}
-
-			var httpErr api.HTTPError
-			isHTTPErr := errors.As(err, &httpErr)
-
-			if tc.expectHTTPErr && !isHTTPErr {
-				t.Errorf("test %d: expected HTTP error but got: %v", i, err)
-			}
-
-			if !tc.expectHTTPErr && isHTTPErr {
-				t.Errorf("test %d: expected no HTTP error but got one: %v", i, httpErr)
-			}
-
-			if err != nil && tc.expectHTTPErr && isHTTPErr {
-				status, _ := httpErr.HTTPError()
-				if status != tc.expectHTTPStatus {
-					t.Errorf("test %d: expected %d HTTP status code but got %d", i, tc.expectHTTPStatus, status)
-				}
-			}
-
-			if tc.expectOutputPathsCount != len(tc.ctx.OutputPaths()) {
-				t.Errorf("test %d: expected %d output paths but got %d", i, tc.expectOutputPathsCount, len(tc.ctx.OutputPaths()))
-			}
-		}()
-	}
-}
-
-func TestConvertURL(t *testing.T) {
-	for i, tc := range []struct {
-		ctx                    *api.ContextMock
-		api                    API
-		engine                 gotenberg.PDFEngine
-		PDFformat              string
-		options                Options
-		expectErr              bool
-		expectHTTPErr          bool
-		expectHTTPStatus       int
-		expectOutputPathsCount int
-	}{
-		{
-			ctx: &api.ContextMock{Context: &api.Context{}},
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return ErrURLNotAuthorized
-				}
-
-				return chromiumAPI
-			}(),
-			options:          DefaultOptions(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusForbidden,
-		},
-		{
-			ctx: &api.ContextMock{Context: &api.Context{}},
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return ErrInvalidEvaluationExpression
-				}
-
-				return chromiumAPI
-			}(),
-			options:   DefaultOptions(),
-			expectErr: true,
-		},
-		{
-			ctx: &api.ContextMock{Context: &api.Context{}},
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return ErrInvalidEvaluationExpression
-				}
-
-				return chromiumAPI
-			}(),
-			options: func() Options {
-				options := DefaultOptions()
-				options.WaitForExpression = "foo"
-
-				return options
-			}(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: &api.ContextMock{Context: &api.Context{}},
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return ErrInvalidPrinterSettings
-				}
-
-				return chromiumAPI
-			}(),
-			options:          DefaultOptions(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: &api.ContextMock{Context: &api.Context{}},
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return ErrPageRangesSyntaxError
-				}
-
-				return chromiumAPI
-			}(),
-			options:          DefaultOptions(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: &api.ContextMock{Context: &api.Context{}},
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return ErrConsoleExceptions
-				}
-
-				return chromiumAPI
-			}(),
-			options:          DefaultOptions(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusConflict,
-		},
-		{
-			ctx: &api.ContextMock{Context: &api.Context{}},
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return errors.New("foo")
-				}
-
-				return chromiumAPI
-			}(),
-			options:   DefaultOptions(),
-			expectErr: true,
-		},
-		{
-			ctx: &api.ContextMock{Context: &api.Context{}},
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-						return gotenberg.ErrPDFFormatNotAvailable
-					},
-				}
-			}(),
-			PDFformat:        "foo",
-			options:          DefaultOptions(),
-			expectErr:        true,
-			expectHTTPErr:    true,
-			expectHTTPStatus: http.StatusBadRequest,
-		},
-		{
-			ctx: &api.ContextMock{Context: &api.Context{}},
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-						return errors.New("foo")
-					},
-				}
-			}(),
-			PDFformat: "foo",
-			options:   DefaultOptions(),
-			expectErr: true,
-		},
-		{
-			ctx: &api.ContextMock{Context: &api.Context{}},
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			engine: func() gotenberg.PDFEngine {
-				return &ProtoPDFEngine{
-					convert: func(_ context.Context, _ *zap.Logger, _, _, _ string) error {
-						return nil
-					},
-				}
-			}(),
-			PDFformat:              "foo",
-			options:                DefaultOptions(),
-			expectOutputPathsCount: 1,
-		},
-		{
-			ctx: func() *api.ContextMock {
-				ctx := &api.ContextMock{Context: &api.Context{}}
-				ctx.SetCancelled(true)
-
-				return ctx
-			}(),
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			options:   DefaultOptions(),
-			expectErr: true,
-		},
-		{
-			ctx: &api.ContextMock{Context: &api.Context{}},
-			api: func() API {
-				chromiumAPI := struct{ ProtoAPI }{}
-				chromiumAPI.pdf = func(_ context.Context, _ *zap.Logger, _, _ string, _ Options) error {
-					return nil
-				}
-
-				return chromiumAPI
-			}(),
-			options:                DefaultOptions(),
-			expectOutputPathsCount: 1,
-		},
-	} {
-		err := convertURL(tc.ctx.Context, tc.api, tc.engine, "", tc.PDFformat, tc.options)
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-
-		var httpErr api.HTTPError
-		isHTTPErr := errors.As(err, &httpErr)
-
-		if tc.expectHTTPErr && !isHTTPErr {
-			t.Errorf("test %d: expected HTTP error but got: %v", i, err)
-		}
-
-		if !tc.expectHTTPErr && isHTTPErr {
-			t.Errorf("test %d: expected no HTTP error but got one: %v", i, httpErr)
-		}
-
-		if err != nil && tc.expectHTTPErr && isHTTPErr {
-			status, _ := httpErr.HTTPError()
-			if status != tc.expectHTTPStatus {
-				t.Errorf("test %d: expected %d HTTP status code but got %d", i, tc.expectHTTPStatus, status)
-			}
-		}
-
-		if tc.expectOutputPathsCount != len(tc.ctx.OutputPaths()) {
-			t.Errorf("test %d: expected %d output paths but got %d", i, tc.expectOutputPathsCount, len(tc.ctx.OutputPaths()))
-		}
-	}
-}

pkg/modules/chromium/stream.go

@@ -0,0 +1,117 @@
+package chromium
+
+import (
+	"bytes"
+	"context"
+	"encoding/base64"
+	"fmt"
+	"io"
+	"strings"
+
+	"github.com/chromedp/cdproto/cdp"
+	cdprotoio "github.com/chromedp/cdproto/io"
+)
+
+// Credits: https://raw.githubusercontent.com/mafredri/cdp/3c5eab7ffc5cbee667b0a813ce470ac423792811/protocol/io/stream_reader.go.
+type streamReader struct {
+	ctx    context.Context
+	handle cdprotoio.StreamHandle
+	r      io.Reader
+	pos    int
+	eof    bool
+}
+
+// Read a chunk of the stream.
+func (reader *streamReader) Read(p []byte) (n int, err error) {
+	if reader.r != nil {
+		// Continue reading from the buffer.
+		return reader.read(p)
+	}
+
+	if reader.eof {
+		return 0, io.EOF
+	}
+
+	if len(p) == 0 {
+		return 0, nil
+	}
+
+	// Chromium might have an off-by-one when deciding the maximum size (at
+	// least for base64 encoded data), usually it will overflow. We subtract
+	// one to make sure it fits into p.
+	size := len(p) - 1
+	if size < 1 {
+		// Safety-check to avoid crashing Chrome (e.g. via SetSize(-1)).
+		size = 1
+	}
+
+	reply, err := reader.next(reader.pos, size)
+	if err != nil {
+		return 0, err
+	}
+
+	reader.eof = reply.EOF
+
+	switch {
+	case reply.Base64encoded:
+		b := []byte(reply.Data)
+		size := base64.StdEncoding.DecodedLen(len(b))
+
+		// Safety-check for fast-path to avoid panics.
+		if len(p) >= size {
+			n, err = base64.StdEncoding.Decode(p, b)
+			reader.pos += n
+
+			return n, err
+		}
+
+		reader.r = base64.NewDecoder(base64.StdEncoding, bytes.NewReader(b))
+	default:
+		reader.r = strings.NewReader(reply.Data)
+	}
+
+	return reader.read(p)
+}
+
+// Close closes the stream, discard any temporary backing storage.
+func (reader *streamReader) Close() error {
+	err := cdprotoio.Close(reader.handle).Do(reader.ctx)
+	if err == nil {
+		return nil
+	}
+
+	return fmt.Errorf("close Chromium stream: %w", err)
+}
+
+func (reader *streamReader) next(pos, size int) (cdprotoio.ReadReturns, error) {
+	params := cdprotoio.
+		Read(reader.handle).
+		WithOffset(int64(pos)).
+		WithSize(int64(size))
+
+	var res cdprotoio.ReadReturns
+	err := cdp.Execute(reader.ctx, cdprotoio.CommandRead, params, &res)
+
+	if err == nil {
+		return res, nil
+	}
+
+	return res, fmt.Errorf("execute IO.read command: %w", err)
+}
+
+func (reader *streamReader) read(p []byte) (n int, err error) {
+	n, err = reader.r.Read(p)
+	reader.pos += n
+
+	if !reader.eof && err == io.EOF {
+		reader.r = nil
+		err = nil
+	}
+
+	return n, err
+}
+
+// Interface guards.
+var (
+	_ io.Reader = (*streamReader)(nil)
+)

pkg/modules/chromium/tasks.go

@@ -0,0 +1,514 @@
+package chromium
+
+import (
+	"bufio"
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/chromedp/cdproto/cdp"
+	"github.com/chromedp/cdproto/emulation"
+	"github.com/chromedp/cdproto/network"
+	"github.com/chromedp/cdproto/page"
+	"github.com/chromedp/chromedp"
+	"go.uber.org/zap"
+)
+
+func printToPdfActionFunc(logger *zap.Logger, outputPath string, options PdfOptions) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		paperHeight := options.PaperHeight
+		pageRanges := options.PageRanges
+
+		if options.SinglePage {
+			logger.Debug("single page PDF")
+
+			_, _, _, _, _, cssContentSize, err := page.GetLayoutMetrics().Do(ctx)
+			if err != nil {
+				return fmt.Errorf("get layout metrics: %w", err)
+			}
+
+			// There are 96 CSS pixels per inch.
+			// See https://issues.chromium.org/issues/40267771#comment14.
+			paperHeight = cssContentSize.Height / 96
+			pageRanges = "1" // little dirty hack to avoid leftovers.
+		}
+
+		printToPdf := page.PrintToPDF().
+			WithTransferMode(page.PrintToPDFTransferModeReturnAsStream).
+			WithLandscape(options.Landscape).
+			WithPrintBackground(options.PrintBackground).
+			WithScale(options.Scale).
+			WithPaperWidth(options.PaperWidth).
+			WithPaperHeight(paperHeight).
+			WithMarginTop(options.MarginTop).
+			WithMarginBottom(options.MarginBottom).
+			WithMarginLeft(options.MarginLeft).
+			WithMarginRight(options.MarginRight).
+			WithPageRanges(pageRanges).
+			WithPreferCSSPageSize(options.PreferCssPageSize).
+			WithGenerateDocumentOutline(options.GenerateDocumentOutline).
+			// See https://github.com/gotenberg/gotenberg/issues/1210.
+			WithGenerateTaggedPDF(options.GenerateTaggedPdf)
+
+		hasCustomHeaderFooter := options.HeaderTemplate != DefaultPdfOptions().HeaderTemplate ||
+			options.FooterTemplate != DefaultPdfOptions().FooterTemplate
+
+		if !hasCustomHeaderFooter {
+			logger.Debug("no custom header nor footer")
+
+			printToPdf = printToPdf.WithDisplayHeaderFooter(false)
+		} else {
+			logger.Debug("with custom header and/or footer")
+
+			printToPdf = printToPdf.
+				WithDisplayHeaderFooter(true).
+				WithHeaderTemplate(options.HeaderTemplate).
+				WithFooterTemplate(options.FooterTemplate)
+		}
+
+		logger.Debug(fmt.Sprintf("print to PDF with: %+v", printToPdf))
+
+		_, stream, err := printToPdf.Do(ctx)
+		if err != nil {
+			return fmt.Errorf("print to PDF: %w", err)
+		}
+
+		reader := &streamReader{
+			ctx:    ctx,
+			handle: stream,
+			r:      nil,
+			pos:    0,
+			eof:    false,
+		}
+
+		defer func() {
+			err = reader.Close()
+			if err != nil {
+				logger.Error(fmt.Sprintf("close reader: %s", err))
+			}
+		}()
+
+		file, err := os.OpenFile(outputPath, os.O_CREATE|os.O_WRONLY, 0o600)
+		if err != nil {
+			return fmt.Errorf("open output path: %w", err)
+		}
+
+		defer func() {
+			err = file.Close()
+			if err != nil {
+				logger.Error(fmt.Sprintf("close output path: %s", err))
+			}
+		}()
+
+		buffer := bufio.NewReader(reader)
+
+		_, err = buffer.WriteTo(file)
+		if err != nil {
+			return fmt.Errorf("write result to output path: %w", err)
+		}
+
+		return nil
+	}
+}
+
+func captureScreenshotActionFunc(logger *zap.Logger, outputPath string, options ScreenshotOptions) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		captureScreenshot := page.CaptureScreenshot().
+			WithCaptureBeyondViewport(true).
+			WithFromSurface(true).
+			WithOptimizeForSpeed(options.OptimizeForSpeed).
+			WithFormat(page.CaptureScreenshotFormat(options.Format))
+
+		if options.Clip {
+			captureScreenshot = captureScreenshot.WithClip(&page.Viewport{
+				Width:  float64(options.Width),
+				Height: float64(options.Height),
+				Scale:  1,
+			})
+		}
+
+		if options.Format == "jpeg" {
+			captureScreenshot = captureScreenshot.
+				WithQuality(int64(options.Quality))
+		}
+
+		logger.Debug(fmt.Sprintf("capture screenshot with: %+v", captureScreenshot))
+
+		buffer, err := captureScreenshot.Do(ctx)
+		if err != nil {
+			return fmt.Errorf("capture screenshot: %w", err)
+		}
+
+		file, err := os.OpenFile(outputPath, os.O_CREATE|os.O_WRONLY, 0o600)
+		if err != nil {
+			return fmt.Errorf("open output path: %w", err)
+		}
+
+		defer func() {
+			err = file.Close()
+			if err != nil {
+				logger.Error(fmt.Sprintf("close output path: %s", err))
+			}
+		}()
+
+		_, err = file.Write(buffer)
+		if err != nil {
+			return fmt.Errorf("write result to output path: %w", err)
+		}
+
+		return nil
+	}
+}
+
+func setDeviceMetricsOverride(logger *zap.Logger, width, height int) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		logger.Debug("set device metrics override")
+
+		err := emulation.SetDeviceMetricsOverride(int64(width), int64(height), 1.0, false).Do(ctx)
+		if err == nil {
+			return nil
+		}
+
+		return fmt.Errorf("set device metrics override: %w", err)
+	}
+}
+
+func clearCacheActionFunc(logger *zap.Logger, clear bool) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		// See https://github.com/gotenberg/gotenberg/issues/753.
+		if !clear {
+			logger.Debug("cache not cleared")
+			return nil
+		}
+
+		logger.Debug("clear cache")
+
+		err := network.ClearBrowserCache().Do(ctx)
+		if err == nil {
+			return nil
+		}
+
+		return fmt.Errorf("clear cache: %w", err)
+	}
+}
+
+func clearCookiesActionFunc(logger *zap.Logger, clear bool) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		// See https://github.com/gotenberg/gotenberg/issues/753.
+		if !clear {
+			logger.Debug("cookies not cleared")
+			return nil
+		}
+
+		logger.Debug("clear cookies")
+
+		err := network.ClearBrowserCookies().Do(ctx)
+		if err == nil {
+			return nil
+		}
+
+		return fmt.Errorf("clear cookies: %w", err)
+	}
+}
+
+func disableJavaScriptActionFunc(logger *zap.Logger, disable bool) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		// See https://github.com/gotenberg/gotenberg/issues/175.
+		if !disable {
+			logger.Debug("JavaScript not disabled")
+			return nil
+		}
+
+		logger.Debug("disable JavaScript")
+
+		err := emulation.SetScriptExecutionDisabled(true).Do(ctx)
+		if err == nil {
+			return nil
+		}
+
+		return fmt.Errorf("disable JavaScript: %w", err)
+	}
+}
+
+func setCookiesActionFunc(logger *zap.Logger, cookies []Cookie) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		if len(cookies) == 0 {
+			logger.Debug("no cookies to set")
+			return nil
+		}
+
+		deadline, ok := ctx.Deadline()
+		if !ok {
+			return errors.New("context has no deadline, cannot set cookies")
+		}
+		epochTime := cdp.TimeSinceEpoch(deadline)
+
+		cookiePretty := func(c *network.SetCookieParams) string {
+			return fmt.Sprintf(
+				"Name: '%s', Value: '%s', Domain: '%s', Path: '%s', Secure: %t, HTTPOnly: %t, SameSite: '%s', Expires: %s",
+				c.Name,
+				c.Value,
+				c.Domain,
+				c.Path,
+				c.Secure,
+				c.HTTPOnly,
+				c.SameSite.String(),
+				c.Expires.Time().String(),
+			)
+		}
+
+		for _, cookie := range cookies {
+			cookieParams := network.
+				SetCookie(cookie.Name, cookie.Value).
+				WithDomain(cookie.Domain).
+				WithPath(cookie.Path).
+				WithSecure(cookie.Secure).
+				WithHTTPOnly(cookie.HttpOnly).
+				WithSameSite(cookie.SameSite).
+				WithExpires(&epochTime)
+
+			err := cookieParams.Do(ctx)
+			if err != nil {
+				return fmt.Errorf("set cookie %s: %w", cookiePretty(cookieParams), err)
+			}
+
+			logger.Debug(fmt.Sprintf("set cookie %s", cookiePretty(cookieParams)))
+		}
+
+		return nil
+	}
+}
+
+func userAgentOverride(logger *zap.Logger, userAgent string) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		if len(userAgent) == 0 {
+			logger.Debug("no user agent override")
+			return nil
+		}
+
+		logger.Debug(fmt.Sprintf("user agent override: %s", userAgent))
+		err := emulation.SetUserAgentOverride(userAgent).Do(ctx)
+		if err == nil {
+			return nil
+		}
+
+		return fmt.Errorf("set user agent override: %w", err)
+	}
+}
+
+// This code has been replaced with the listenForEventRequestPaused function.
+// Indeed, the user may want to scope the headers per domain, but using
+// network.SetExtraHTTPHeaders set the headers for ALL requests from the page.
+// See https://github.com/gotenberg/gotenberg/issues/1011.
+//
+//func extraHttpHeadersActionFunc(logger *zap.Logger, extraHttpHeaders map[string]string) chromedp.ActionFunc {
+//	return func(ctx context.Context) error {
+//		if len(extraHttpHeaders) == 0 {
+//			logger.Debug("no extra HTTP headers")
+//			return nil
+//		}
+//
+//		logger.Debug(fmt.Sprintf("extra HTTP headers: %+v", extraHttpHeaders))
+//
+//		headers := make(network.Headers, len(extraHttpHeaders))
+//		for key, value := range extraHttpHeaders {
+//			headers[key] = value
+//		}
+//
+//		err := network.SetExtraHTTPHeaders(headers).Do(ctx)
+//		if err == nil {
+//			return nil
+//		}
+//
+//		return fmt.Errorf("set extra HTTP headers: %w", err)
+//	}
+//}
+
+func navigateActionFunc(logger *zap.Logger, url string, skipNetworkIdleEvent bool) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		logger.Debug(fmt.Sprintf("navigate to '%s'", url))
+
+		_, _, _, err := page.Navigate(url).Do(ctx)
+		if err != nil {
+			return fmt.Errorf("navigate to '%s': %w", url, err)
+		}
+
+		waitFunc := []func() error{
+			waitForEventDomContentEventFired(ctx, logger),
+			waitForEventLoadEventFired(ctx, logger),
+			waitForEventLoadingFinished(ctx, logger),
+		}
+
+		if !skipNetworkIdleEvent {
+			waitFunc = append(waitFunc, waitForEventNetworkIdle(ctx, logger))
+		} else {
+			logger.Debug("skipping network idle event")
+		}
+
+		err = runBatch(
+			ctx,
+			waitFunc...,
+		)
+
+		if err == nil {
+			return nil
+		}
+
+		return fmt.Errorf("wait for events: %w", err)
+	}
+}
+
+func hideDefaultWhiteBackgroundActionFunc(logger *zap.Logger, omitBackground, printBackground bool) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		// See https://github.com/gotenberg/gotenberg/issues/226.
+		if !omitBackground {
+			logger.Debug("default white background not hidden")
+			return nil
+		}
+
+		if !printBackground {
+			// See https://github.com/chromedp/chromedp/issues/1179#issuecomment-1284794416.
+			return fmt.Errorf("validate omit background: %w", ErrOmitBackgroundWithoutPrintBackground)
+		}
+
+		logger.Debug("hide default white background")
+
+		err := emulation.SetDefaultBackgroundColorOverride().WithColor(
+			&cdp.RGBA{
+				R: 0,
+				G: 0,
+				B: 0,
+				A: 0,
+			}).Do(ctx)
+
+		if err == nil {
+			return nil
+		}
+
+		return fmt.Errorf("hide default white background: %w", err)
+	}
+}
+
+func forceExactColorsActionFunc(logger *zap.Logger, printBackground bool) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		css := "html { -webkit-print-color-adjust: exact !important; }"
+		if !printBackground {
+			// The -webkit-print-color-adjust: exact CSS property forces the
+			// print of the background, whatever the printToPDF args.
+			// See https://github.com/gotenberg/gotenberg/issues/1154.
+			additionalCss := "html, body { background: none !important; }"
+			logger.Debug(fmt.Sprintf("inject %s as printBackground is %t", additionalCss, printBackground))
+			css += additionalCss
+		}
+
+		script := fmt.Sprintf(`
+(() => {
+	const css = '%s';
+	const style = document.createElement('style');
+	style.type = 'text/css';
+	style.appendChild(document.createTextNode(css));
+	document.head.appendChild(style);
+})();
+`, css)
+
+		evaluate := chromedp.Evaluate(script, nil)
+		err := evaluate.Do(ctx)
+		if err == nil {
+			return nil
+		}
+
+		return fmt.Errorf("add CSS for exact colors: %w", err)
+	}
+}
+
+func emulateMediaTypeActionFunc(logger *zap.Logger, mediaType string) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		if mediaType == "" {
+			logger.Debug("no emulated media type")
+			return nil
+		}
+
+		if mediaType != "screen" && mediaType != "print" {
+			return fmt.Errorf("validate emulated media type '%s': %w", mediaType, ErrInvalidEmulatedMediaType)
+		}
+
+		logger.Debug(fmt.Sprintf("emulate media type '%s'", mediaType))
+
+		emulatedMedia := emulation.SetEmulatedMedia()
+		err := emulatedMedia.WithMedia(mediaType).Do(ctx)
+		if err == nil {
+			return nil
+		}
+
+		return fmt.Errorf("emulate media type '%s': %w", mediaType, err)
+	}
+}
+
+func waitDelayBeforePrintActionFunc(logger *zap.Logger, disableJavaScript bool, delay time.Duration) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		if disableJavaScript {
+			logger.Debug("JavaScript disabled, skipping wait delay")
+			return nil
+		}
+
+		if delay <= 0 {
+			logger.Debug("no wait delay")
+			return nil
+		}
+
+		// We wait for a given amount of time so that JavaScript
+		// scripts have a chance to finish before printing the page.
+		logger.Debug(fmt.Sprintf("wait '%s' before print", delay))
+
+		select {
+		case <-ctx.Done():
+			return fmt.Errorf("wait delay: %w", ctx.Err())
+		case <-time.After(delay):
+			return nil
+		}
+	}
+}
+
+func waitForExpressionBeforePrintActionFunc(logger *zap.Logger, disableJavaScript bool, expression string) chromedp.ActionFunc {
+	return func(ctx context.Context) error {
+		if disableJavaScript {
+			logger.Debug("JavaScript disabled, skipping wait expression")
+			return nil
+		}
+
+		if expression == "" {
+			logger.Debug("no wait expression")
+			return nil
+		}
+
+		// We wait until the evaluation of the expression is true or
+		// until the context is done.
+		logger.Debug(fmt.Sprintf("wait until '%s' is true before print", expression))
+		ticker := time.NewTicker(time.Duration(100) * time.Millisecond)
+
+		for {
+			select {
+			case <-ctx.Done():
+				ticker.Stop()
+				return fmt.Errorf("context done while evaluating '%s': %w", expression, ctx.Err())
+			case <-ticker.C:
+				var ok bool
+				evaluate := chromedp.Evaluate(expression, &ok)
+
+				err := evaluate.Do(ctx)
+				if err != nil {
+					return fmt.Errorf("evaluate: %v: %w", err, ErrInvalidEvaluationExpression)
+				}
+
+				if ok {
+					ticker.Stop()
+					return nil
+				}
+
+				continue
+			}
+		}
+	}
+}

pkg/modules/exiftool/doc.go

@@ -0,0 +1,11 @@
+// Package exiftool provides an implementation of the gotenberg.PdfEngine
+// interface using the ExifTool command-line tool. This package allows for:
+//
+// 1. The reading of metadata.
+// 2. The writing of metadata.
+//
+// The path to the exiftool binary must be specified using the
+// EXIFTOOL_BIN_PATH environment variable.
+//
+// See: https://exiftool.org.
+package exiftool

pkg/modules/exiftool/exiftool.go

@@ -0,0 +1,186 @@
+package exiftool
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"os/exec"
+	"reflect"
+	"strings"
+	"syscall"
+
+	"github.com/barasher/go-exiftool"
+	"go.uber.org/zap"
+
+	"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
+)
+
+func init() {
+	gotenberg.MustRegisterModule(new(ExifTool))
+}
+
+// ExifTool abstracts the CLI tool ExifTool and implements the
+// [gotenberg.PdfEngine] interface.
+type ExifTool struct {
+	binPath string
+}
+
+// Descriptor returns [ExifTool]'s module descriptor.
+func (engine *ExifTool) Descriptor() gotenberg.ModuleDescriptor {
+	return gotenberg.ModuleDescriptor{
+		ID:  "exiftool",
+		New: func() gotenberg.Module { return new(ExifTool) },
+	}
+}
+
+// Provision sets the module properties.
+func (engine *ExifTool) Provision(ctx *gotenberg.Context) error {
+	binPath, ok := os.LookupEnv("EXIFTOOL_BIN_PATH")
+	if !ok {
+		return errors.New("EXIFTOOL_BIN_PATH environment variable is not set")
+	}
+
+	engine.binPath = binPath
+
+	return nil
+}
+
+// Validate validates the module properties.
+func (engine *ExifTool) Validate() error {
+	_, err := os.Stat(engine.binPath)
+	if os.IsNotExist(err) {
+		return fmt.Errorf("ExifTool binary path does not exist: %w", err)
+	}
+
+	return nil
+}
+
+// Debug returns additional debug data.
+func (engine *ExifTool) Debug() map[string]interface{} {
+	debug := make(map[string]interface{})
+
+	cmd := exec.Command(engine.binPath, "-ver") //nolint:gosec
+	cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
+
+	output, err := cmd.Output()
+	if err != nil {
+		debug["version"] = err.Error()
+		return debug
+	}
+
+	debug["version"] = strings.TrimSpace(string(output))
+	return debug
+}
+
+// Merge is not available in this implementation.
+func (engine *ExifTool) Merge(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
+	return fmt.Errorf("merge PDFs with ExifTool: %w", gotenberg.ErrPdfEngineMethodNotSupported)
+}
+
+// Split is not available in this implementation.
+func (engine *ExifTool) Split(ctx context.Context, logger *zap.Logger, mode gotenberg.SplitMode, inputPath, outputDirPath string) ([]string, error) {
+	return nil, fmt.Errorf("split PDF with ExifTool: %w", gotenberg.ErrPdfEngineMethodNotSupported)
+}
+
+// Flatten is not available in this implementation.
+func (engine *ExifTool) Flatten(ctx context.Context, logger *zap.Logger, inputPath string) error {
+	return fmt.Errorf("flatten PDF with ExifTool: %w", gotenberg.ErrPdfEngineMethodNotSupported)
+}
+
+// Convert is not available in this implementation.
+func (engine *ExifTool) Convert(ctx context.Context, logger *zap.Logger, formats gotenberg.PdfFormats, inputPath, outputPath string) error {
+	return fmt.Errorf("convert PDF to '%+v' with ExifTool: %w", formats, gotenberg.ErrPdfEngineMethodNotSupported)
+}
+
+// ReadMetadata extracts the metadata of a given PDF file.
+func (engine *ExifTool) ReadMetadata(ctx context.Context, logger *zap.Logger, inputPath string) (map[string]interface{}, error) {
+	exifTool, err := exiftool.NewExiftool(exiftool.SetExiftoolBinaryPath(engine.binPath))
+	if err != nil {
+		return nil, fmt.Errorf("new ExifTool: %w", err)
+	}
+
+	defer func(exifTool *exiftool.Exiftool) {
+		err := exifTool.Close()
+		if err != nil {
+			logger.Error(fmt.Sprintf("close ExifTool: %v", err))
+		}
+	}(exifTool)
+
+	fileMetadata := exifTool.ExtractMetadata(inputPath)
+	if fileMetadata[0].Err != nil {
+		return nil, fmt.Errorf("read metadata with ExitfTool: %w", fileMetadata[0].Err)
+	}
+
+	return fileMetadata[0].Fields, nil
+}
+
+// WriteMetadata writes the metadata into a given PDF file.
+func (engine *ExifTool) WriteMetadata(ctx context.Context, logger *zap.Logger, metadata map[string]interface{}, inputPath string) error {
+	exifTool, err := exiftool.NewExiftool(exiftool.SetExiftoolBinaryPath(engine.binPath))
+	if err != nil {
+		return fmt.Errorf("new ExifTool: %w", err)
+	}
+
+	defer func(exifTool *exiftool.Exiftool) {
+		err := exifTool.Close()
+		if err != nil {
+			logger.Error(fmt.Sprintf("close ExifTool: %v", err))
+		}
+	}(exifTool)
+
+	fileMetadata := exifTool.ExtractMetadata(inputPath)
+	if fileMetadata[0].Err != nil {
+		return fmt.Errorf("read metadata with ExitfTool: %w", fileMetadata[0].Err)
+	}
+
+	for key, value := range metadata {
+		switch val := value.(type) {
+		case string:
+			fileMetadata[0].SetString(key, val)
+		case []string:
+			fileMetadata[0].SetStrings(key, val)
+		case []interface{}:
+			// See https://github.com/gotenberg/gotenberg/issues/1048.
+			strs := make([]string, len(val))
+			for i, entry := range val {
+				if str, ok := entry.(string); ok {
+					strs[i] = str
+					continue
+				}
+				return fmt.Errorf("write PDF metadata with ExifTool: %s %+v %s %w", key, val, reflect.TypeOf(val), gotenberg.ErrPdfEngineMetadataValueNotSupported)
+			}
+			fileMetadata[0].SetStrings(key, strs)
+		case bool:
+			fileMetadata[0].SetString(key, fmt.Sprintf("%t", val))
+		case int:
+			fileMetadata[0].SetInt(key, int64(val))
+		case int64:
+			fileMetadata[0].SetInt(key, val)
+		case float32:
+			fileMetadata[0].SetFloat(key, float64(val))
+		case float64:
+			fileMetadata[0].SetFloat(key, val)
+		// TODO: support more complex cases, e.g., arrays and nested objects
+		// 	(limitations in underlying library).
+		default:
+			return fmt.Errorf("write PDF metadata with ExifTool: %s %+v %s %w", key, val, reflect.TypeOf(val), gotenberg.ErrPdfEngineMetadataValueNotSupported)
+		}
+	}
+
+	exifTool.WriteMetadata(fileMetadata)
+	if fileMetadata[0].Err != nil {
+		return fmt.Errorf("write PDF metadata with ExifTool: %w", fileMetadata[0].Err)
+	}
+
+	return nil
+}
+
+// Interface guards.
+var (
+	_ gotenberg.Module      = (*ExifTool)(nil)
+	_ gotenberg.Provisioner = (*ExifTool)(nil)
+	_ gotenberg.Validator   = (*ExifTool)(nil)
+	_ gotenberg.Debuggable  = (*ExifTool)(nil)
+	_ gotenberg.PdfEngine   = (*ExifTool)(nil)
+)

pkg/modules/gc/doc.go

@@ -1,3 +0,0 @@
-// Package gc provides a module for removing files and directories that have
-// expired.
-package gc

pkg/modules/gc/gc.go

@@ -1,225 +0,0 @@
-package gc
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"os"
-	"path/filepath"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
-	"go.uber.org/zap"
-)
-
-func init() {
-	gotenberg.MustRegisterModule(GarbageCollector{})
-}
-
-// GarbageCollector is a module for removing files and directories that have
-// expired. It allows us to make sure that the application does not leak files
-// or directories when running.
-type GarbageCollector struct {
-	rootPath      string
-	graceDuration time.Duration
-	excludeSubstr []string
-
-	ticker *time.Ticker
-	done   chan bool
-
-	logger *zap.Logger
-}
-
-// GarbageCollectorGraceDurationModifier is a module interface which allows to
-// update the expiration time of files and directories parsed by the garbage
-// collector. For instance, if the grace duration is 30s, the garbage collector
-// will remove paths that have a modification time older than 30s. If there are
-// many GarbageCollectorGraceDurationModifier, only the longest grace duration
-// is selected.
-type GarbageCollectorGraceDurationModifier interface {
-	GraceDuration() time.Duration
-}
-
-// GarbageCollectorExcludeSubstrModifier is a module interface which adds the
-// given substrings to the exclude list of the garbage collector. If a path
-// contains one of those substrings, the garbage collector ignores it.
-type GarbageCollectorExcludeSubstrModifier interface {
-	ExcludeSubstr() []string
-}
-
-// Descriptor returns a GarbageCollector's module descriptor.
-func (gc GarbageCollector) Descriptor() gotenberg.ModuleDescriptor {
-	return gotenberg.ModuleDescriptor{
-		ID:  "gc",
-		New: func() gotenberg.Module { return new(GarbageCollector) },
-	}
-}
-
-// Provision sets the module properties.
-func (gc *GarbageCollector) Provision(ctx *gotenberg.Context) error {
-	gc.rootPath = gotenberg.TmpPath()
-
-	graceDurationModifiers, err := ctx.Modules(new(GarbageCollectorGraceDurationModifier))
-	if err != nil {
-		return fmt.Errorf("get grace duration modifiers: %w", err)
-	}
-
-	for _, graceDurationModifier := range graceDurationModifiers {
-		modifier := graceDurationModifier.(GarbageCollectorGraceDurationModifier)
-
-		if gc.graceDuration < modifier.GraceDuration() {
-			gc.graceDuration = modifier.GraceDuration()
-		}
-	}
-
-	excludeSubstrModifiers, err := ctx.Modules(new(GarbageCollectorExcludeSubstrModifier))
-	if err != nil {
-		return fmt.Errorf("get exclude substr modifiers: %w", err)
-	}
-
-	gc.excludeSubstr = strings.Split(os.Getenv("GC_EXCLUDE_SUBSTR"), ",")
-
-	for _, excludeSubstrModifier := range excludeSubstrModifiers {
-		modifier := excludeSubstrModifier.(GarbageCollectorExcludeSubstrModifier)
-
-		gc.excludeSubstr = append(gc.excludeSubstr, modifier.ExcludeSubstr()...)
-	}
-
-	loggerProvider, err := ctx.Module(new(gotenberg.LoggerProvider))
-	if err != nil {
-		return fmt.Errorf("get logger provider: %w", err)
-	}
-
-	logger, err := loggerProvider.(gotenberg.LoggerProvider).Logger(gc)
-	if err != nil {
-		return fmt.Errorf("get logger: %w", err)
-	}
-
-	gc.logger = logger
-
-	return nil
-}
-
-// Start starts the garbage collector.
-func (gc *GarbageCollector) Start() error {
-	gc.ticker = time.NewTicker(gc.graceDuration + time.Duration(1)*time.Second)
-	gc.done = make(chan bool, 1)
-
-	go func() {
-		for {
-			func() {
-				gcMu.RLock()
-				defer gcMu.RUnlock()
-
-				select {
-				case <-gc.done:
-					return
-				case <-gc.ticker.C:
-					gc.collect(false)
-				}
-			}()
-		}
-	}()
-
-	return nil
-}
-
-// collect parses the root path of the garbage collector and removes files or
-// directories that have expired. It ignores the expiration date if the "force"
-// argument is set to true.
-func (gc GarbageCollector) collect(force bool) {
-	expirationTime := time.Now().Add(-gc.graceDuration)
-
-	// To make sure that the next Walk method stays on
-	// the root level of the considered path, we have to
-	// return a filepath.SkipDir error if the current path
-	// is a directory.
-	skipDirOrNil := func(info os.FileInfo) error {
-		if info.IsDir() {
-			return filepath.SkipDir
-		}
-
-		return nil
-	}
-
-	removePath := func(path string) {
-		err := os.RemoveAll(path)
-		if err != nil {
-			gc.logger.Error(fmt.Sprintf("remove '%s': %s", path, err))
-		}
-
-		gc.logger.Debug(fmt.Sprintf("'%s' removed", path))
-	}
-
-	err := filepath.Walk(gc.rootPath, func(path string, info os.FileInfo, pathErr error) error {
-		if pathErr != nil {
-			// For whatever reasons, the Walk method failed
-			// to process the current path.
-			return pathErr
-		}
-
-		if path == gc.rootPath {
-			return nil
-		}
-
-		for _, substr := range gc.excludeSubstr {
-			if strings.Contains(info.Name(), substr) {
-				return skipDirOrNil(info)
-			}
-		}
-
-		if force {
-			removePath(path)
-
-			return skipDirOrNil(info)
-		}
-
-		if info.ModTime().Before(expirationTime) {
-			removePath(path)
-		}
-
-		return skipDirOrNil(info)
-	})
-
-	if err != nil {
-		gc.logger.Error(err.Error())
-	}
-}
-
-// StartupMessage returns an empty string.
-func (gc GarbageCollector) StartupMessage() string {
-	return ""
-}
-
-// Stop stops the garbage collector.
-func (gc *GarbageCollector) Stop(ctx context.Context) error {
-	_, ok := ctx.Deadline()
-	if !ok {
-		return errors.New("no context dead line")
-	}
-
-	// Block until the context is done so that other module may gracefully stop
-	// before we do a shutdown cleanup.
-	gc.logger.Debug("wait for the end of grace duration")
-
-	<-ctx.Done()
-
-	gc.ticker.Stop()
-	gc.done <- true
-
-	gc.logger.Debug("shutdown cleanup...")
-	gc.collect(true)
-
-	return nil
-}
-
-var gcMu sync.RWMutex
-
-// Interface guards.
-var (
-	_ gotenberg.Module      = (*GarbageCollector)(nil)
-	_ gotenberg.Provisioner = (*GarbageCollector)(nil)
-	_ gotenberg.App         = (*GarbageCollector)(nil)
-)

pkg/modules/gc/gc_test.go

@@ -1,468 +0,0 @@
-package gc
-
-import (
-	"context"
-	"errors"
-	"os"
-	"reflect"
-	"strings"
-	"testing"
-	"time"
-
-	"github.com/gotenberg/gotenberg/v7/pkg/gotenberg"
-	"go.uber.org/zap"
-)
-
-type ProtoModule struct {
-	descriptor func() gotenberg.ModuleDescriptor
-}
-
-func (mod ProtoModule) Descriptor() gotenberg.ModuleDescriptor {
-	return mod.descriptor()
-}
-
-type ProtoValidator struct {
-	ProtoModule
-	validate func() error
-}
-
-func (mod ProtoValidator) Validate() error {
-	return mod.validate()
-}
-
-type ProtoGarbageCollectorGraceDurationModifier struct {
-	ProtoValidator
-	graceDuration func() time.Duration
-}
-
-func (mod ProtoGarbageCollectorGraceDurationModifier) GraceDuration() time.Duration {
-	return mod.graceDuration()
-}
-
-type ProtoGarbageCollectorExcludeSubstrModifier struct {
-	ProtoValidator
-	excludeSubstr func() []string
-}
-
-func (mod ProtoGarbageCollectorExcludeSubstrModifier) ExcludeSubstr() []string {
-	return mod.excludeSubstr()
-}
-
-type ProtoLoggerProvider struct {
-	ProtoModule
-	logger func(mod gotenberg.Module) (*zap.Logger, error)
-}
-
-func (factory ProtoLoggerProvider) Logger(mod gotenberg.Module) (*zap.Logger, error) {
-	return factory.logger(mod)
-}
-
-func TestGarbageCollector_Descriptor(t *testing.T) {
-	descriptor := GarbageCollector{}.Descriptor()
-
-	actual := reflect.TypeOf(descriptor.New())
-	expect := reflect.TypeOf(new(GarbageCollector))
-
-	if actual != expect {
-		t.Errorf("expected '%s' but got '%s'", expect, actual)
-	}
-}
-
-func TestGarbageCollector_Provision(t *testing.T) {
-	for i, tc := range []struct {
-		ctx                 *gotenberg.Context
-		expectGraceDuration time.Duration
-		expectExcludeSubstr []string
-		expectErr           bool
-	}{
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct {
-					ProtoGarbageCollectorGraceDurationModifier
-				}{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.validate = func() error { return errors.New("foo") }
-
-				return gotenberg.NewContext(gotenberg.ParsedFlags{}, []gotenberg.ModuleDescriptor{
-					mod.Descriptor(),
-				})
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct {
-					ProtoGarbageCollectorExcludeSubstrModifier
-				}{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.validate = func() error { return errors.New("foo") }
-
-				return gotenberg.NewContext(gotenberg.ParsedFlags{}, []gotenberg.ModuleDescriptor{
-					mod.Descriptor(),
-				})
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx:       gotenberg.NewContext(gotenberg.ParsedFlags{}, make([]gotenberg.ModuleDescriptor, 0)),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct {
-					ProtoLoggerProvider
-				}{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.logger = func(mod gotenberg.Module) (*zap.Logger, error) { return nil, errors.New("foo") }
-
-				return gotenberg.NewContext(gotenberg.ParsedFlags{}, []gotenberg.ModuleDescriptor{
-					mod.Descriptor(),
-				})
-			}(),
-			expectErr: true,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod := struct {
-					ProtoLoggerProvider
-				}{}
-				mod.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod }}
-				}
-				mod.logger = func(mod gotenberg.Module) (*zap.Logger, error) { return zap.NewNop(), nil }
-
-				return gotenberg.NewContext(gotenberg.ParsedFlags{}, []gotenberg.ModuleDescriptor{
-					mod.Descriptor(),
-				})
-			}(),
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod1 := struct {
-					ProtoGarbageCollectorGraceDurationModifier
-				}{}
-				mod1.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod1 }}
-				}
-				mod1.graceDuration = func() time.Duration { return time.Duration(10) * time.Second }
-				mod1.validate = func() error { return nil }
-
-				mod2 := struct {
-					ProtoGarbageCollectorGraceDurationModifier
-				}{}
-				mod2.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "bar", New: func() gotenberg.Module { return mod2 }}
-				}
-				mod2.graceDuration = func() time.Duration { return time.Duration(20) * time.Second }
-				mod2.validate = func() error { return nil }
-
-				mod3 := struct {
-					ProtoLoggerProvider
-				}{}
-				mod3.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "baz", New: func() gotenberg.Module { return mod3 }}
-				}
-				mod3.logger = func(mod gotenberg.Module) (*zap.Logger, error) { return zap.NewNop(), nil }
-
-				return gotenberg.NewContext(gotenberg.ParsedFlags{}, []gotenberg.ModuleDescriptor{
-					mod1.Descriptor(),
-					mod2.Descriptor(),
-					mod3.Descriptor(),
-				})
-			}(),
-			expectGraceDuration: time.Duration(20) * time.Second,
-		},
-		{
-			ctx: func() *gotenberg.Context {
-				mod1 := struct {
-					ProtoGarbageCollectorExcludeSubstrModifier
-				}{}
-				mod1.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "foo", New: func() gotenberg.Module { return mod1 }}
-				}
-				mod1.excludeSubstr = func() []string { return []string{"foo"} }
-				mod1.validate = func() error { return nil }
-
-				mod2 := struct {
-					ProtoGarbageCollectorExcludeSubstrModifier
-				}{}
-				mod2.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "bar", New: func() gotenberg.Module { return mod2 }}
-				}
-				mod2.excludeSubstr = func() []string { return []string{"bar"} }
-				mod2.validate = func() error { return nil }
-
-				mod3 := struct {
-					ProtoLoggerProvider
-				}{}
-				mod3.descriptor = func() gotenberg.ModuleDescriptor {
-					return gotenberg.ModuleDescriptor{ID: "baz", New: func() gotenberg.Module { return mod3 }}
-				}
-				mod3.logger = func(mod gotenberg.Module) (*zap.Logger, error) { return zap.NewNop(), nil }
-
-				return gotenberg.NewContext(gotenberg.ParsedFlags{}, []gotenberg.ModuleDescriptor{
-					mod1.Descriptor(),
-					mod2.Descriptor(),
-					mod3.Descriptor(),
-				})
-			}(),
-			expectExcludeSubstr: func() []string {
-				expect := strings.Split(os.Getenv("GC_EXCLUDE_SUBSTR"), ",")
-				return append(expect, "foo", "bar")
-			}(),
-		},
-	} {
-		mod := new(GarbageCollector)
-		err := mod.Provision(tc.ctx)
-
-		if tc.expectErr && err == nil {
-			t.Errorf("test %d: expected error but got: %v", i, err)
-		}
-
-		if !tc.expectErr && err != nil {
-			t.Errorf("test %d: expected no error but got: %v", i, err)
-		}
-
-		if tc.expectGraceDuration != 0 && tc.expectGraceDuration != mod.graceDuration {
-			t.Errorf("test %d: expected grace duration of '%s' but got '%s'", i, tc.expectGraceDuration, mod.graceDuration)
-		}
-
-		if tc.expectExcludeSubstr != nil && !reflect.DeepEqual(tc.expectExcludeSubstr, mod.excludeSubstr) {
-			t.Errorf("test %d: expected exclude substr '%s' but got '%s'", i, tc.expectExcludeSubstr, mod.excludeSubstr)
-		}
-	}
-}
-
-func TestGarbageCollector_Start(t *testing.T) {
-	mod := new(GarbageCollector)
-	mod.logger = zap.NewNop()
-
-	path, err := gotenberg.MkdirAll()
-	if err != nil {
-		t.Fatalf("expected no error but got: %v", err)
-	}
-
-	mod.rootPath = path
-
-	err = mod.Start()
-	if err != nil {
-		t.Errorf("expected no error but got: %v", err)
-	}
-
-	time.Sleep(time.Duration(2) * time.Second)
-	mod.ticker.Stop()
-	mod.done <- true
-}
-
-func TestGarbageCollector_collect(t *testing.T) {
-	for i, tc := range []struct {
-		gc              *GarbageCollector
-		expectNotExists []string
-		expectExists    []string
-		force           bool
-	}{
-		{
-			gc: func() *GarbageCollector {
-				mod := new(GarbageCollector)
-				mod.logger = zap.NewNop()
-
-				path, err := gotenberg.MkdirAll()
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				mod.rootPath = path
-
-				err = os.WriteFile(path+"/foo", []byte{1}, 0755)
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				mod.excludeSubstr = []string{
-					"foo",
-				}
-
-				return mod
-			}(),
-			expectExists: []string{
-				"/foo",
-			},
-		},
-		{
-			gc: func() *GarbageCollector {
-				mod := new(GarbageCollector)
-				mod.logger = zap.NewNop()
-
-				path, err := gotenberg.MkdirAll()
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				mod.rootPath = path
-
-				err = os.WriteFile(path+"/foo", []byte{1}, 0755)
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				err = os.MkdirAll(path+"/bar", 0755)
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				return mod
-			}(),
-			expectNotExists: []string{
-				"/foo",
-				"/bar",
-			},
-			force: true,
-		},
-		{
-			gc: func() *GarbageCollector {
-				mod := new(GarbageCollector)
-				mod.logger = zap.NewNop()
-				mod.graceDuration = time.Duration(10) * time.Second
-
-				path, err := gotenberg.MkdirAll()
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				mod.rootPath = path
-
-				err = os.WriteFile(path+"/foo", []byte{1}, 0755)
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				newTime := time.Now().Add(-time.Duration(20) * time.Second)
-				err = os.Chtimes(path+"/foo", newTime, newTime)
-
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				err = os.WriteFile(path+"/bar", []byte{1}, 0755)
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				newTime = time.Now().Add(time.Duration(10) * time.Second)
-				err = os.Chtimes(path+"/bar", newTime, newTime)
-
-				if err != nil {
-					t.Fatalf("expected no error but got: %v", err)
-				}
-
-				return mod
-			}(),
-			expectNotExists: []string{
-				"/foo",
-			},
-			expectExists: []string{
-				"/bar",
-			},
-		},
-	} {
-		tc.gc.collect(tc.force)
-
-		for _, name := range tc.expectNotExists {
-			path := tc.gc.rootPath + name
-			_, err := os.Stat(path)
-			if !os.IsNotExist(err) {
-				t.Errorf("test %d: expected '%s' not to exist but got: %v", i, path, err)
-			}
-		}
-
-		for _, name := range tc.expectExists {
-			path := tc.gc.rootPath + name
-			_, err := os.Stat(path)
-			if os.IsNotExist(err) {
-				t.Errorf("test %d: expected '%s' to exist but got: %v", i, path, err)
-			}
-		}
-
-		err := os.RemoveAll(tc.gc.rootPath)
-		if err != nil {
-			t.Fatalf("test %d: expected no error but got: %v", i, err)
-		}
-	}
-}
-
-func TestGarbageCollector_StartupMessage(t *testing.T) {
-	actual := new(GarbageCollector).StartupMessage()
-	expect := ""
-
-	if actual != expect {
-		t.Errorf("expected '%s' but got '%s'", expect, actual)
-	}
-}
-
-func TestGarbageCollector_Stop(t *testing.T) {
-	for i, tc := range []struct {
-		timeout   time.Duration
-		expectErr bool
-	}{
-		{
-			expectErr: true,
-		},
-		{
-			timeout: time.Duration(1) * time.Nanosecond,
-		},
-	} {
-		func() {
-			mod := new(GarbageCollector)
-			mod.logger = zap.NewNop()
-
-			path, err := gotenberg.MkdirAll()
-			if err != nil {
-				t.Fatalf("test %d: expected no error but got: %v", i, err)
-			}
-
-			mod.rootPath = path
-
-			err = mod.Start()
-			if err != nil {
-				t.Fatalf("test %d: expected no error but got: %v", i, err)
-			}
-
-			if tc.timeout == 0 {
-				err = mod.Stop(context.TODO())
-			} else {
-				ctx, cancel := context.WithTimeout(context.Background(), tc.timeout)
-				defer cancel()
-
-				err = mod.Stop(ctx)
-			}
-
-			if tc.expectErr && err == nil {
-				t.Errorf("test %d: expected error but got: %v", i, err)
-			}
-
-			if !tc.expectErr && err != nil {
-				t.Errorf("test %d: expected no error but got: %v", i, err)
-			}
-		}()
-	}
-}
-
-// Interface guards.
-var (
-	_ gotenberg.Module                      = (*ProtoModule)(nil)
-	_ gotenberg.Validator                   = (*ProtoValidator)(nil)
-	_ GarbageCollectorGraceDurationModifier = (*ProtoGarbageCollectorGraceDurationModifier)(nil)
-	_ gotenberg.Module                      = (*ProtoGarbageCollectorGraceDurationModifier)(nil)
-	_ gotenberg.Validator                   = (*ProtoGarbageCollectorGraceDurationModifier)(nil)
-	_ GarbageCollectorExcludeSubstrModifier = (*ProtoGarbageCollectorExcludeSubstrModifier)(nil)
-	_ gotenberg.Module                      = (*ProtoGarbageCollectorExcludeSubstrModifier)(nil)
-	_ gotenberg.Validator                   = (*ProtoGarbageCollectorExcludeSubstrModifier)(nil)
-	_ gotenberg.LoggerProvider              = (*ProtoLoggerProvider)(nil)
-	_ gotenberg.Module                      = (*ProtoLoggerProvider)(nil)
-)

pkg/modules/libreoffice/api/api.go

@@ -0,0 +1,571 @@
+package api
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+	"syscall"
+	"time"
+
+	"github.com/alexliesenfeld/health"
+	flag "github.com/spf13/pflag"
+	"go.uber.org/multierr"
+	"go.uber.org/zap"
+
+	"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
+	"github.com/gotenberg/gotenberg/v8/pkg/modules/api"
+)
+
+func init() {
+	gotenberg.MustRegisterModule(new(Api))
+}
+
+var (
+	// ErrInvalidPdfFormats happens if LibreOffice cannot handle the PDF
+	// formats option.
+	ErrInvalidPdfFormats = errors.New("invalid PDF formats")
+
+	// ErrUnoException happens when unoconverter returns exit code 5.
+	ErrUnoException = errors.New("uno exception")
+
+	// ErrRuntimeException happens when unoconverter returns exit code 6.
+	ErrRuntimeException = errors.New("uno exception")
+
+	// ErrCoreDumped happens randomly; sometimes a conversion will work as
+	// expected, and some other time the same conversion will fail.
+	// See https://github.com/gotenberg/gotenberg/issues/639.
+	ErrCoreDumped = errors.New("core dumped")
+)
+
+// Api is a module that provides a [Uno] to interact with LibreOffice.
+type Api struct {
+	autoStart bool
+	args      libreOfficeArguments
+
+	logger      *zap.Logger
+	libreOffice libreOffice
+	supervisor  gotenberg.ProcessSupervisor
+}
+
+// Options gathers available options when converting a document to PDF.
+// See: https://help.libreoffice.org/latest/en-US/text/shared/guide/pdf_params.html.
+type Options struct {
+	// Password specifies the password for opening the source file.
+	Password string
+
+	// Landscape allows changing the orientation of the resulting PDF.
+	Landscape bool
+
+	// PageRanges allows selecting the pages to convert.
+	PageRanges string
+
+	// UpdateIndexes specifies whether to update the indexes before conversion,
+	// keeping in mind that doing so might result in missing links in the final
+	// PDF.
+	UpdateIndexes bool
+
+	// ExportFormFields specifies whether form fields are exported as widgets
+	// or only their fixed print representation is exported.
+	ExportFormFields bool
+
+	// AllowDuplicateFieldNames specifies whether multiple form fields exported
+	// are allowed to have the same field name.
+	AllowDuplicateFieldNames bool
+
+	// ExportBookmarks specifies if bookmarks are exported to PDF.
+	ExportBookmarks bool
+
+	// ExportBookmarksToPdfDestination specifies that the bookmarks contained
+	// in the source LibreOffice file should be exported to the PDF file as
+	// Named Destination.
+	ExportBookmarksToPdfDestination bool
+
+	// ExportPlaceholders exports the placeholder fields visual markings only.
+	// The exported placeholder is ineffective.
+	ExportPlaceholders bool
+
+	// ExportNotes specifies if notes are exported to PDF.
+	ExportNotes bool
+
+	// ExportNotesPages specifies if notes pages are exported to PDF.
+	// Notes pages are available in Impress documents only.
+	ExportNotesPages bool
+
+	// ExportOnlyNotesPages specifies if the property ExportNotesPages is set
+	// to true if only notes pages are exported to PDF.
+	ExportOnlyNotesPages bool
+
+	// ExportNotesInMargin specifies if notes in the margin are exported to
+	// PDF.
+	ExportNotesInMargin bool
+
+	// ConvertOooTargetToPdfTarget specifies that the target documents with
+	// .od[tpgs] extension will have that extension changed to .pdf when the
+	// link is exported to PDF. The source document remains untouched.
+	ConvertOooTargetToPdfTarget bool
+
+	// ExportLinksRelativeFsys specifies that the file system related
+	// hyperlinks (file:// protocol) present in the document will be exported
+	// as relative to the source document location.
+	ExportLinksRelativeFsys bool
+
+	// ExportHiddenSlides exports, for LibreOffice Impress, slides that are not
+	// included in slide shows.
+	ExportHiddenSlides bool
+
+	// SkipEmptyPages specifies that automatically inserted empty pages are
+	// suppressed. This option is active only if storing Writer documents.
+	SkipEmptyPages bool
+
+	// AddOriginalDocumentAsStream specifies that a stream is inserted to the
+	// PDF file which contains the original document for archiving purposes.
+	AddOriginalDocumentAsStream bool
+
+	// SinglePageSheets ignores each sheet’s paper size, print ranges and
+	// shown/hidden status and puts every sheet (even hidden sheets) on exactly
+	// one page.
+	SinglePageSheets bool
+
+	// LosslessImageCompression specifies if images are exported to PDF using
+	// a lossless compression format like PNG or compressed using the JPEG
+	// format.
+	LosslessImageCompression bool
+
+	// Quality specifies the quality of the JPG export. A higher value produces
+	// a higher-quality image and a larger file. Between 1 and 100.
+	Quality int
+
+	// ReduceImageResolution specifies if the resolution of each image is
+	// reduced to the resolution specified by the property MaxImageResolution.
+	ReduceImageResolution bool
+
+	// MaxImageResolution, if the property ReduceImageResolution is set to
+	// true, tells if all images will be reduced to the given value in DPI.
+	// Possible values are: 75, 150, 300, 600 and 1200.
+	MaxImageResolution int
+
+	// PdfFormats allows to convert the resulting PDF to PDF/A-1b, PDF/A-2b,
+	// PDF/A-3b and PDF/UA.
+	PdfFormats gotenberg.PdfFormats
+}
+
+// DefaultOptions returns the default values for Options.
+func DefaultOptions() Options {
+	return Options{
+		Password:                        "",
+		Landscape:                       false,
+		PageRanges:                      "",
+		UpdateIndexes:                   true,
+		ExportFormFields:                true,
+		AllowDuplicateFieldNames:        false,
+		ExportBookmarks:                 true,
+		ExportBookmarksToPdfDestination: false,
+		ExportPlaceholders:              false,
+		ExportNotes:                     false,
+		ExportNotesPages:                false,
+		ExportOnlyNotesPages:            false,
+		ExportNotesInMargin:             false,
+		ConvertOooTargetToPdfTarget:     false,
+		ExportLinksRelativeFsys:         false,
+		ExportHiddenSlides:              false,
+		SkipEmptyPages:                  false,
+		AddOriginalDocumentAsStream:     false,
+		SinglePageSheets:                false,
+		LosslessImageCompression:        false,
+		Quality:                         90,
+		ReduceImageResolution:           false,
+		MaxImageResolution:              300,
+		PdfFormats: gotenberg.PdfFormats{
+			PdfA:  "",
+			PdfUa: false,
+		},
+	}
+}
+
+// Uno is an abstraction on top of the Universal Network Objects API.
+type Uno interface {
+	Pdf(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options Options) error
+	Extensions() []string
+}
+
+// Provider is a module interface that exposes a method for creating a
+// [Uno] for other modules.
+//
+//	func (m *YourModule) Provision(ctx *gotenberg.Context) error {
+//		provider, _ := ctx.Module(new(libreofficeapi.Provider))
+//		libreOffice, _      := provider.(api.Provider).LibreOffice()
+//	}
+type Provider interface {
+	LibreOffice() (Uno, error)
+}
+
+// Descriptor returns a [Api]'s module descriptor.
+func (a *Api) Descriptor() gotenberg.ModuleDescriptor {
+	return gotenberg.ModuleDescriptor{
+		ID: "libreoffice-api",
+		FlagSet: func() *flag.FlagSet {
+			fs := flag.NewFlagSet("api", flag.ExitOnError)
+			fs.Int64("libreoffice-restart-after", 10, "Number of conversions after which LibreOffice will automatically restart. Set to 0 to disable this feature")
+			fs.Int64("libreoffice-max-queue-size", 0, "Maximum request queue size for LibreOffice. Set to 0 to disable this feature")
+			fs.Bool("libreoffice-auto-start", false, "Automatically launch LibreOffice upon initialization if set to true; otherwise, LibreOffice will start at the time of the first conversion")
+			fs.Duration("libreoffice-start-timeout", time.Duration(20)*time.Second, "Maximum duration to wait for LibreOffice to start or restart")
+
+			return fs
+		}(),
+		New: func() gotenberg.Module { return new(Api) },
+	}
+}
+
+// Provision sets the module properties.
+func (a *Api) Provision(ctx *gotenberg.Context) error {
+	flags := ctx.ParsedFlags()
+	a.autoStart = flags.MustBool("libreoffice-auto-start")
+
+	libreOfficeBinPath, ok := os.LookupEnv("LIBREOFFICE_BIN_PATH")
+	if !ok {
+		return errors.New("LIBREOFFICE_BIN_PATH environment variable is not set")
+	}
+
+	unoBinPath, ok := os.LookupEnv("UNOCONVERTER_BIN_PATH")
+	if !ok {
+		return errors.New("UNOCONVERTER_BIN_PATH environment variable is not set")
+	}
+
+	a.args = libreOfficeArguments{
+		binPath:      libreOfficeBinPath,
+		unoBinPath:   unoBinPath,
+		startTimeout: flags.MustDuration("libreoffice-start-timeout"),
+	}
+
+	// Logger.
+	loggerProvider, err := ctx.Module(new(gotenberg.LoggerProvider))
+	if err != nil {
+		return fmt.Errorf("get logger provider: %w", err)
+	}
+	logger, err := loggerProvider.(gotenberg.LoggerProvider).Logger(a)
+	if err != nil {
+		return fmt.Errorf("get logger: %w", err)
+	}
+	a.logger = logger.Named("libreoffice")
+
+	// Process.
+	a.libreOffice = newLibreOfficeProcess(a.args)
+	a.supervisor = gotenberg.NewProcessSupervisor(a.logger, a.libreOffice, flags.MustInt64("libreoffice-restart-after"), flags.MustInt64("libreoffice-max-queue-size"))
+
+	return nil
+}
+
+// Validate validates the module properties.
+func (a *Api) Validate() error {
+	var err error
+
+	_, statErr := os.Stat(a.args.binPath)
+	if os.IsNotExist(statErr) {
+		err = multierr.Append(err, fmt.Errorf("LibreOffice binary path does not exist: %w", statErr))
+	}
+
+	_, statErr = os.Stat(a.args.unoBinPath)
+	if os.IsNotExist(statErr) {
+		err = multierr.Append(err, fmt.Errorf("unoconverter binary path does not exist: %w", statErr))
+	}
+
+	return err
+}
+
+// Start does nothing if auto-start is not enabled. Otherwise, it starts a
+// LibreOffice instance.
+func (a *Api) Start() error {
+	if !a.autoStart {
+		return nil
+	}
+
+	err := a.supervisor.Launch()
+	if err != nil {
+		return fmt.Errorf("launch supervisor: %w", err)
+	}
+
+	return nil
+}
+
+// StartupMessage returns a custom startup message.
+func (a *Api) StartupMessage() string {
+	if !a.autoStart {
+		return "LibreOffice ready to start"
+	}
+
+	return "LibreOffice automatically started"
+}
+
+// Stop stops the current browser instance.
+func (a *Api) Stop(ctx context.Context) error {
+	// Block until the context is done so that another module may gracefully
+	// stop before we do a shutdown.
+	a.logger.Debug("wait for the end of grace duration")
+
+	<-ctx.Done()
+
+	err := a.supervisor.Shutdown()
+	if err == nil {
+		return nil
+	}
+
+	return fmt.Errorf("stop LibreOffice: %w", err)
+}
+
+// Debug returns additional debug data.
+func (a *Api) Debug() map[string]interface{} {
+	debug := make(map[string]interface{})
+
+	cmd := exec.Command(a.args.binPath, "--version") //nolint:gosec
+	cmd.SysProcAttr = &syscall.SysProcAttr{Setpgid: true}
+
+	output, err := cmd.Output()
+	if err != nil {
+		debug["version"] = err.Error()
+		return debug
+	}
+
+	debug["version"] = strings.TrimSpace(string(output))
+	return debug
+}
+
+// Metrics returns the metrics.
+func (a *Api) Metrics() ([]gotenberg.Metric, error) {
+	return []gotenberg.Metric{
+		{
+			Name:        "libreoffice_requests_queue_size",
+			Description: "Current number of LibreOffice conversion requests waiting to be treated.",
+			Read: func() float64 {
+				return float64(a.supervisor.ReqQueueSize())
+			},
+		},
+		{
+			Name:        "libreoffice_restarts_count",
+			Description: "Current number of LibreOffice restarts.",
+			Read: func() float64 {
+				return float64(a.supervisor.RestartsCount())
+			},
+		},
+	}, nil
+}
+
+// Checks adds a health check that verifies if LibreOffice is healthy.
+func (a *Api) Checks() ([]health.CheckerOption, error) {
+	return []health.CheckerOption{
+		health.WithCheck(health.Check{
+			Name: "libreoffice",
+			Check: func(_ context.Context) error {
+				if a.supervisor.Healthy() {
+					return nil
+				}
+
+				return errors.New("LibreOffice is unhealthy")
+			},
+		}),
+	}, nil
+}
+
+// Ready returns no error if the module is ready.
+func (a *Api) Ready() error {
+	if !a.autoStart {
+		return nil
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), a.args.startTimeout)
+	defer cancel()
+
+	ticker := time.NewTicker(time.Duration(100) * time.Millisecond)
+
+	for {
+		select {
+		case <-ctx.Done():
+			ticker.Stop()
+			return fmt.Errorf("context done while waiting for LibreOffice to be ready: %w", ctx.Err())
+		case <-ticker.C:
+			ok := a.libreOffice.Healthy(a.logger)
+			if ok {
+				ticker.Stop()
+				return nil
+			}
+
+			continue
+		}
+	}
+}
+
+// LibreOffice returns a [Uno] for interacting with LibreOffice.
+func (a *Api) LibreOffice() (Uno, error) {
+	return a, nil
+}
+
+// Pdf converts a document to PDF.
+func (a *Api) Pdf(ctx context.Context, logger *zap.Logger, inputPath, outputPath string, options Options) error {
+	err := a.supervisor.Run(ctx, logger, func() error {
+		return a.libreOffice.pdf(ctx, logger, inputPath, outputPath, options)
+	})
+
+	if err == nil {
+		return nil
+	}
+
+	// See https://github.com/gotenberg/gotenberg/issues/639.
+	if errors.Is(err, ErrCoreDumped) {
+		logger.Debug(fmt.Sprintf("got a '%s' error, retry conversion", err))
+		return a.Pdf(ctx, logger, inputPath, outputPath, options)
+	}
+
+	return fmt.Errorf("supervisor run task: %w", err)
+}
+
+// Extensions returns the file extensions available for conversions.
+// FIXME: don't care, take all on the route level?
+func (a *Api) Extensions() []string {
+	return []string{
+		".123",
+		".602",
+		".abw",
+		".bib",
+		".bmp",
+		".cdr",
+		".cgm",
+		".cmx",
+		".csv",
+		".cwk",
+		".dbf",
+		".dif",
+		".doc",
+		".docm",
+		".docx",
+		".dot",
+		".dotm",
+		".dotx",
+		".dxf",
+		".emf",
+		".eps",
+		".epub",
+		".fodg",
+		".fodp",
+		".fods",
+		".fodt",
+		".fopd",
+		".gif",
+		".htm",
+		".html",
+		".hwp",
+		".jpeg",
+		".jpg",
+		".key",
+		".ltx",
+		".lwp",
+		".mcw",
+		".met",
+		".mml",
+		".mw",
+		".numbers",
+		".odd",
+		".odg",
+		".odm",
+		".odp",
+		".ods",
+		".odt",
+		".otg",
+		".oth",
+		".otp",
+		".ots",
+		".ott",
+		".pages",
+		".pbm",
+		".pcd",
+		".pct",
+		".pcx",
+		".pdb",
+		".pdf",
+		".pgm",
+		".png",
+		".pot",
+		".potm",
+		".potx",
+		".ppm",
+		".pps",
+		".ppt",
+		".pptm",
+		".pptx",
+		".psd",
+		".psw",
+		".pub",
+		".pwp",
+		".pxl",
+		".ras",
+		".rtf",
+		".sda",
+		".sdc",
+		".sdd",
+		".sdp",
+		".sdw",
+		".sgl",
+		".slk",
+		".smf",
+		".stc",
+		".std",
+		".sti",
+		".stw",
+		".svg",
+		".svm",
+		".swf",
+		".sxc",
+		".sxd",
+		".sxg",
+		".sxi",
+		".sxm",
+		".sxw",
+		".tga",
+		".tif",
+		".tiff",
+		".txt",
+		".uof",
+		".uop",
+		".uos",
+		".uot",
+		".vdx",
+		".vor",
+		".vsd",
+		".vsdm",
+		".vsdx",
+		".wb2",
+		".wk1",
+		".wks",
+		".wmf",
+		".wpd",
+		".wpg",
+		".wps",
+		".xbm",
+		".xhtml",
+		".xls",
+		".xlsb",
+		".xlsm",
+		".xlsx",
+		".xlt",
+		".xltm",
+		".xltx",
+		".xlw",
+		".xml",
+		".xpm",
+		".zabw",
+	}
+}
+
+// Interface guards.
+var (
+	_ gotenberg.Module          = (*Api)(nil)
+	_ gotenberg.Provisioner     = (*Api)(nil)
+	_ gotenberg.Validator       = (*Api)(nil)
+	_ gotenberg.App             = (*Api)(nil)
+	_ gotenberg.Debuggable      = (*Api)(nil)
+	_ gotenberg.MetricsProvider = (*Api)(nil)
+	_ api.HealthChecker         = (*Api)(nil)
+	_ Uno                       = (*Api)(nil)
+	_ Provider                  = (*Api)(nil)
+)

pkg/modules/libreoffice/api/doc.go

@@ -0,0 +1,3 @@
+// Package api provides a module which manages a LibreOffice instance and
+// interacts with it via the UNO (Universal Network Objects) API.
+package api