func mainWithError()

in main.go [40:88]
37 lines of code
8 McCabe index (conditional complexity)

func mainWithError() error {
	// Global context
	ctx, cancel := signal.NotifyContext(context.Background(), syscall.SIGTERM, syscall.SIGINT)
	defer cancel()

	cfg, err := config.LoadDefaultConfig(ctx)
	if err != nil {
		return fmt.Errorf("failed to load AWS default config: %v", err)
	}

	appConfigs := []app.ConfigOption{
		app.WithExtensionName(filepath.Base(os.Args[0])),
		app.WithLambdaRuntimeAPI(os.Getenv("AWS_LAMBDA_RUNTIME_API")),
		app.WithLogLevel(os.Getenv("ELASTIC_APM_LOG_LEVEL")),
		app.WithAWSConfig(cfg),
	}

	rawDisableLogsAPI := os.Getenv("ELASTIC_APM_LAMBDA_DISABLE_LOGS_API")
	if disableLogsAPI, _ := strconv.ParseBool(rawDisableLogsAPI); disableLogsAPI {
		appConfigs = append(appConfigs, app.WithoutLogsAPI())
	}

	// ELASTIC_APM_LAMBDA_CAPTURE_LOGS indicate if the lambda extension
	// should capture logs, the value defaults to true i.e. the extension
	// will capture function logs by default
	rawLambdaCaptureLogs := os.Getenv("ELASTIC_APM_LAMBDA_CAPTURE_LOGS")
	captureLogs, err := strconv.ParseBool(rawLambdaCaptureLogs)
	if err != nil {
		if rawLambdaCaptureLogs != "" {
			log.Printf("failed to parse env var ELASTIC_APM_LAMBDA_CAPTURE_LOGS, defaulting to true")
		}
		captureLogs = true
	}

	if captureLogs {
		appConfigs = append(appConfigs, app.WithFunctionLogSubscription())
	}

	application, err := app.New(ctx, appConfigs...)
	if err != nil {
		return fmt.Errorf("failed to create the app: %v", err)
	}

	if err := application.Run(ctx); err != nil {
		return fmt.Errorf("error while running: %v", err)
	}

	return nil
}