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feat(chromium): capture screenshot (#765)

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This commit is contained in:
Julien Neuhart
2024-01-04 19:14:38 +01:00
committed by GitHub
parent 93b9ac2d13
commit b2f6e865a7
11 changed files with 2334 additions and 351 deletions
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70
pkg/modules/chromium/browser.go
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@@ -22,7 +22,8 @@ import (
type browser interface {
gotenberg.Process
pdf(ctx context.Context, logger *zap.Logger, url, outputPath string, options Options) error
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 {
@@ -213,9 +214,53 @@ func (b *chromiumBrowser) Healthy(logger *zap.Logger) bool {
return true
}
func (b *chromiumBrowser) pdf(ctx context.Context, logger *zap.Logger, url, outputPath string, options Options) error {
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),
extraHttpHeadersActionFunc(logger, options.ExtraHttpHeaders),
navigateActionFunc(logger, url, options.SkipNetworkIdleEvent),
hideDefaultWhiteBackgroundActionFunc(logger, options.OmitBackground, options.PrintBackground),
forceExactColorsActionFunc(),
emulateMediaTypeActionFunc(logger, options.EmulatedMediaType),
waitDelayBeforePrintActionFunc(logger, b.arguments.disableJavaScript, options.WaitDelay),
waitForExpressionBeforePrintActionFunc(logger, b.arguments.disableJavaScript, options.WaitForExpression),
// PDF specific.
printToPdfActionFunc(logger, outputPath, options),
})
}
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),
extraHttpHeadersActionFunc(logger, options.ExtraHttpHeaders),
navigateActionFunc(logger, url, options.SkipNetworkIdleEvent),
hideDefaultWhiteBackgroundActionFunc(logger, options.OmitBackground, true),
forceExactColorsActionFunc(),
emulateMediaTypeActionFunc(logger, options.EmulatedMediaType),
waitDelayBeforePrintActionFunc(logger, b.arguments.disableJavaScript, options.WaitDelay),
waitForExpressionBeforePrintActionFunc(logger, b.arguments.disableJavaScript, options.WaitForExpression),
// Screenshot specific.
captureScreenshotActionFunc(logger, outputPath, options),
})
}
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 PDF conversion")
return errors.New("browser not started, cannot handle tasks")
}
// We validate the "main" URL against our allow / deny lists.
@@ -265,23 +310,6 @@ func (b *chromiumBrowser) pdf(ctx context.Context, logger *zap.Logger, url, outp
listenForEventExceptionThrown(taskCtx, logger, &consoleExceptions, &consoleExceptionsMu)
}
tasks := chromedp.Tasks{
network.Enable(),
fetch.Enable(),
runtime.Enable(),
clearCacheActionFunc(logger, b.arguments.clearCache),
clearCookiesActionFunc(logger, b.arguments.clearCookies),
disableJavaScriptActionFunc(logger, b.arguments.disableJavaScript),
extraHttpHeadersActionFunc(logger, options.ExtraHttpHeaders),
navigateActionFunc(logger, url, options.SkipNetworkIdleEvent),
hideDefaultWhiteBackgroundActionFunc(logger, options.OmitBackground, options.PrintBackground),
forceExactColorsActionFunc(),
emulateMediaTypeActionFunc(logger, options.EmulatedMediaType),
waitDelayBeforePrintActionFunc(logger, b.arguments.disableJavaScript, options.WaitDelay),
waitForExpressionBeforePrintActionFunc(logger, b.arguments.disableJavaScript, options.WaitForExpression),
printToPdfActionFunc(logger, outputPath, options),
}
err := chromedp.Run(taskCtx, tasks...)
if err != nil {
errMessage := err.Error()
@@ -298,7 +326,7 @@ func (b *chromiumBrowser) pdf(ctx context.Context, logger *zap.Logger, url, outp
return ErrRpccMessageTooLarge
}
return fmt.Errorf("print to PDF: %w", err)
return fmt.Errorf("handle tasks: %w", err)
}
// See https://github.com/gotenberg/gotenberg/issues/613.