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feat(otel): add OpenTelemetry support

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This commit is contained in:
Julien Neuhart
2026-03-27 16:28:45 +01:00
parent 08088c15f4
commit 4e9f63004d
86 changed files with 4396 additions and 1283 deletions
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39
pkg/modules/pdfcpu/pdfcpu.go
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@@ -6,6 +6,7 @@ import (
"encoding/json"
"errors"
"fmt"
"log/slog"
"os"
"os/exec"
"path/filepath"
@@ -14,8 +15,6 @@ import (
"strings"
"syscall"
"go.uber.org/zap"
"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
)
@@ -96,7 +95,7 @@ func (engine *PdfCpu) Debug() map[string]any {
}
// Merge combines multiple PDFs into a single PDF.
func (engine *PdfCpu) Merge(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
func (engine *PdfCpu) Merge(ctx context.Context, logger *slog.Logger, inputPaths []string, outputPath string) error {
args := make([]string, 0, 2+len(inputPaths))
args = append(args, "merge", outputPath)
args = append(args, inputPaths...)
@@ -115,7 +114,7 @@ func (engine *PdfCpu) Merge(ctx context.Context, logger *zap.Logger, inputPaths
}
// Split splits a given PDF file.
func (engine *PdfCpu) Split(ctx context.Context, logger *zap.Logger, mode gotenberg.SplitMode, inputPath, outputDirPath string) ([]string, error) {
func (engine *PdfCpu) Split(ctx context.Context, logger *slog.Logger, mode gotenberg.SplitMode, inputPath, outputDirPath string) ([]string, error) {
var args []string
switch mode.Mode {
@@ -165,32 +164,32 @@ func (engine *PdfCpu) Split(ctx context.Context, logger *zap.Logger, mode gotenb
}
// Flatten is not available in this implementation.
func (engine *PdfCpu) Flatten(ctx context.Context, logger *zap.Logger, inputPath string) error {
func (engine *PdfCpu) Flatten(ctx context.Context, logger *slog.Logger, inputPath string) error {
return fmt.Errorf("flatten PDF with pdfcpu: %w", gotenberg.ErrPdfEngineMethodNotSupported)
}
// Convert is not available in this implementation.
func (engine *PdfCpu) Convert(ctx context.Context, logger *zap.Logger, formats gotenberg.PdfFormats, inputPath, outputPath string) error {
func (engine *PdfCpu) Convert(ctx context.Context, logger *slog.Logger, formats gotenberg.PdfFormats, inputPath, outputPath string) error {
return fmt.Errorf("convert PDF to '%+v' with pdfcpu: %w", formats, gotenberg.ErrPdfEngineMethodNotSupported)
}
// ReadMetadata is not available in this implementation.
func (engine *PdfCpu) ReadMetadata(ctx context.Context, logger *zap.Logger, inputPath string) (map[string]any, error) {
func (engine *PdfCpu) ReadMetadata(ctx context.Context, logger *slog.Logger, inputPath string) (map[string]any, error) {
return nil, fmt.Errorf("read PDF metadata with pdfcpu: %w", gotenberg.ErrPdfEngineMethodNotSupported)
}
// WriteMetadata is not available in this implementation.
func (engine *PdfCpu) WriteMetadata(ctx context.Context, logger *zap.Logger, metadata map[string]any, inputPath string) error {
func (engine *PdfCpu) WriteMetadata(ctx context.Context, logger *slog.Logger, metadata map[string]any, inputPath string) error {
return fmt.Errorf("write PDF metadata with pdfcpu: %w", gotenberg.ErrPdfEngineMethodNotSupported)
}
// PageCount is not available in this implementation.
func (engine *PdfCpu) PageCount(ctx context.Context, logger *zap.Logger, inputPath string) (int, error) {
func (engine *PdfCpu) PageCount(ctx context.Context, logger *slog.Logger, inputPath string) (int, error) {
return 0, fmt.Errorf("page count with pdfcpu: %w", gotenberg.ErrPdfEngineMethodNotSupported)
}
// ReadBookmarks reads the document outline (bookmarks) of a PDF file using pdfcpu.
func (engine *PdfCpu) ReadBookmarks(ctx context.Context, logger *zap.Logger, inputPath string) ([]gotenberg.Bookmark, error) {
func (engine *PdfCpu) ReadBookmarks(ctx context.Context, logger *slog.Logger, inputPath string) ([]gotenberg.Bookmark, error) {
tmpPath := fmt.Sprintf("%s.read.json", inputPath)
args := []string{"bookmarks", "export", inputPath, tmpPath}
cmd, err := gotenberg.CommandContext(ctx, logger, engine.binPath, args...)
@@ -201,7 +200,7 @@ func (engine *PdfCpu) ReadBookmarks(ctx context.Context, logger *zap.Logger, inp
defer func() {
err := os.Remove(tmpPath)
if err != nil && !os.IsNotExist(err) {
logger.Error(fmt.Sprintf("remove temporary bookmarks JSON file: %v", err))
logger.ErrorContext(ctx, fmt.Sprintf("remove temporary bookmarks JSON file: %v", err))
}
}()
@@ -269,7 +268,7 @@ func (engine *PdfCpu) ReadBookmarks(ctx context.Context, logger *zap.Logger, inp
}
// WriteBookmarks adds a document outline (bookmarks) to a PDF file using pdfcpu.
func (engine *PdfCpu) WriteBookmarks(ctx context.Context, logger *zap.Logger, inputPath string, bookmarks []gotenberg.Bookmark) error {
func (engine *PdfCpu) WriteBookmarks(ctx context.Context, logger *slog.Logger, inputPath string, bookmarks []gotenberg.Bookmark) error {
if len(bookmarks) == 0 {
return nil
}
@@ -305,7 +304,7 @@ func (engine *PdfCpu) WriteBookmarks(ctx context.Context, logger *zap.Logger, in
defer func() {
err := os.Remove(tmpPath)
if err != nil {
logger.Error(fmt.Sprintf("remove temporary bookmarks JSON file: %v", err))
logger.ErrorContext(ctx, fmt.Sprintf("remove temporary bookmarks JSON file: %v", err))
}
}()
@@ -325,12 +324,12 @@ func (engine *PdfCpu) WriteBookmarks(ctx context.Context, logger *zap.Logger, in
// EmbedFiles embeds files into a PDF. All files are embedded as file attachments
// without modifying the main PDF content.
func (engine *PdfCpu) EmbedFiles(ctx context.Context, logger *zap.Logger, filePaths []string, inputPath string) error {
func (engine *PdfCpu) EmbedFiles(ctx context.Context, logger *slog.Logger, filePaths []string, inputPath string) error {
if len(filePaths) == 0 {
return nil
}
logger.Debug(fmt.Sprintf("embedding %d file(s) to %s: %v", len(filePaths), inputPath, filePaths))
logger.DebugContext(ctx, fmt.Sprintf("embedding %d file(s) to %s: %v", len(filePaths), inputPath, filePaths))
args := make([]string, 0, 3+len(filePaths))
args = append(args, "attachments", "add", inputPath)
@@ -350,7 +349,7 @@ func (engine *PdfCpu) EmbedFiles(ctx context.Context, logger *zap.Logger, filePa
}
// Encrypt adds password protection to a PDF file using pdfcpu.
func (engine *PdfCpu) Encrypt(ctx context.Context, logger *zap.Logger, inputPath, userPassword, ownerPassword string) error {
func (engine *PdfCpu) Encrypt(ctx context.Context, logger *slog.Logger, inputPath, userPassword, ownerPassword string) error {
if userPassword == "" {
return errors.New("user password cannot be empty")
}
@@ -381,17 +380,17 @@ func (engine *PdfCpu) Encrypt(ctx context.Context, logger *zap.Logger, inputPath
}
// Watermark applies a watermark (behind page content) to a PDF file using pdfcpu.
func (engine *PdfCpu) Watermark(ctx context.Context, logger *zap.Logger, inputPath string, stamp gotenberg.Stamp) error {
func (engine *PdfCpu) Watermark(ctx context.Context, logger *slog.Logger, inputPath string, stamp gotenberg.Stamp) error {
return engine.applyStampOrWatermark(ctx, logger, "watermark", inputPath, stamp)
}
// Stamp applies a stamp (on top of page content) to a PDF file using pdfcpu.
func (engine *PdfCpu) Stamp(ctx context.Context, logger *zap.Logger, inputPath string, stamp gotenberg.Stamp) error {
func (engine *PdfCpu) Stamp(ctx context.Context, logger *slog.Logger, inputPath string, stamp gotenberg.Stamp) error {
return engine.applyStampOrWatermark(ctx, logger, "stamp", inputPath, stamp)
}
// Rotate rotates pages of a PDF file by the given angle using pdfcpu.
func (engine *PdfCpu) Rotate(ctx context.Context, logger *zap.Logger, inputPath string, angle int, pages string) error {
func (engine *PdfCpu) Rotate(ctx context.Context, logger *slog.Logger, inputPath string, angle int, pages string) error {
args := []string{"rotate"}
if pages != "" {
args = append(args, "-pages", pages)
@@ -411,7 +410,7 @@ func (engine *PdfCpu) Rotate(ctx context.Context, logger *zap.Logger, inputPath
return nil
}
func (engine *PdfCpu) applyStampOrWatermark(ctx context.Context, logger *zap.Logger, command string, inputPath string, stamp gotenberg.Stamp) error {
func (engine *PdfCpu) applyStampOrWatermark(ctx context.Context, logger *slog.Logger, command string, inputPath string, stamp gotenberg.Stamp) error {
var mode string
switch stamp.Source {
case gotenberg.StampSourceText: