Function viewLogsJSONFile

pkg/logging/json_logger.go:145–161

Loads log entries from logfiles produced by the json-logger driver and forwards them to the provided io.Writers after applying the provided logging options.

(lvopts LogViewOptions, stdout, stderr io.Writer, stopChannel chan os.Signal)

// Loads log entries from logfiles produced by the json-logger driver and forwards
// them to the provided io.Writers after applying the provided logging options.
func viewLogsJSONFile(lvopts LogViewOptions, stdout, stderr io.Writer, stopChannel chan os.Signal) error {
	logFilePath := jsonfile.Path(lvopts.DatastoreRootPath, lvopts.Namespace, lvopts.ContainerID)
	if _, err := os.Stat(logFilePath); err != nil {
		// FIXME: this is a workaround for the actual issue, not a real solution
		// https://github.com/containerd/nerdctl/issues/3187
		if errors.Is(err, os.ErrNotExist) {
			log.L.Warnf("Racing log file creation. Pausing briefly.")
			time.Sleep(200 * time.Millisecond)
			_, err = os.Stat(logFilePath)
		}
		if err != nil {
			return fmt.Errorf("failed to stat JSON log file %w", err)
		}
	}

	return viewLogsJSONFileDirect(lvopts, logFilePath, stdout, stderr, stopChannel)
}

// Loads JSON log entries directly from the provided JSON log file.
// If `LogViewOptions.Follow` is provided, it will refresh and re-read the file until