fix: add --disable-gpu flag to Chromium / chore: upgrade base image to bullseye (#331)

pkg/modules/chromium/chromium.go

@@ -257,12 +257,18 @@ func (mod Chromium) Routes() ([]api.MultipartFormDataRoute, error) {
 // drastically. In such a scenario, the given context may also be done before
 // the end of the conversion.
 func (mod Chromium) PDF(ctx context.Context, logger *zap.Logger, URL, outputPath string, options Options) error {
+	debug := debugLogger{logger: logger.Named("chromium.debug")}
 	userProfileDirPath := gotenberg.NewDirPath()
 
 	args := append(chromedp.DefaultExecAllocatorOptions[:],
+		chromedp.CombinedOutput(debug),
 		chromedp.ExecPath(mod.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"),
@@ -284,7 +290,9 @@ func (mod Chromium) PDF(ctx context.Context, logger *zap.Logger, URL, outputPath
 	allocatorCtx, cancel := chromedp.NewExecAllocator(ctx, args...)
 	defer cancel()
 
-	taskCtx, cancel := chromedp.NewContext(allocatorCtx)
+	taskCtx, cancel := chromedp.NewContext(allocatorCtx,
+		chromedp.WithDebugf(debug.Printf),
+	)
 	defer cancel()
 
 	// We validate the "main" URL against our allow / deny lists.

pkg/modules/chromium/debug.go

@@ -0,0 +1,31 @@
+package chromium
+
+import (
+	"fmt"
+	"io"
+
+	"go.uber.org/zap"
+)
+
+// 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) {
+	debug.logger.Debug(string(p))
+
+	return len(p), nil
+}
+
+// Printf logs a debug message.
+func (debug debugLogger) Printf(format string, v ...interface{}) {
+	debug.logger.Debug(fmt.Sprintf(format, v...))
+}
+
+// Interface guards.
+var (
+	_ io.Writer = (*debugLogger)(nil)
+)

pkg/modules/chromium/debug_test.go

@@ -0,0 +1,24 @@
+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")
+}