Function parseFlags

rest/main.go:476–513

parseFlags handles the parsing of legacy and persistent config flags.

(ctx context.Context, args []string)

// parseFlags handles the parsing of legacy and persistent config flags.
func parseFlags(ctx context.Context, args []string) (flagStartupConfig *StartupConfig, fs *flag.FlagSet, disablePersistentConfig *bool, err error) {
	fs = flag.NewFlagSet(args[0], flag.ContinueOnError)

	// used by service scripts as a way to specify a per-distro defaultLogFilePath
	defaultLogFilePathFlag := fs.String("defaultLogFilePath", "", "Path to log files, if not overridden by --logFilePath, or the config")

	disablePersistentConfig = fs.Bool("disable_persistent_config", false, "Can be set to false to disable persistent config handling, and read all configuration from a legacy config file.")

	// register config property flags
	startupConfig := NewEmptyStartupConfig()
	legacyStartupConfig := NewEmptyStartupConfig()

	configFlags := registerConfigFlags(&startupConfig, fs)
	legacyConfigFlags := registerLegacyFlags(&legacyStartupConfig, fs)

	if err = fs.Parse(args[1:]); err != nil {
		return nil, nil, nil, err
	}

	err = fillConfigWithFlags(fs, configFlags)
	if err != nil {
		return nil, nil, nil, fmt.Errorf("error merging flags on to config: %w", err)
	}

	err = fillConfigWithLegacyFlags(ctx, legacyConfigFlags, fs, startupConfig.Logging.Console.LogLevel != nil)
	if err != nil {
		return nil, nil, nil, fmt.Errorf("error merging legacy flags on to config: %w", err)
	}
	// Merge persistent config on to legacy startup config to give priority to persistent config flags
	err = legacyStartupConfig.Merge(&startupConfig)
	if err != nil {
		return nil, nil, nil, err
	}

	defaultLogFilePath = *defaultLogFilePathFlag

	return &legacyStartupConfig, fs, disablePersistentConfig, nil
}