func main()

in cmd/server/main.go [67:123]
49 lines of code
11 McCabe index (conditional complexity)

func main() {
	defer logger.Sync()

	ctx, cancelFn := context.WithCancel(context.Background())
	// os signal handler
	shutdownCh := make(chan struct{})
	registerSignal(func() {
		close(shutdownCh)
		cancelFn()
	})

	flag.Parse()

	logger.Get().Info("Kvrocks controller is running with version: " + version.Version)
	cfg := config.Default()
	if len(configPath) != 0 {
		content, err := os.ReadFile(configPath)
		if err != nil {
			logger.Get().With(zap.Error(err)).Error("Failed to read the config file")
			return
		}
		if err := yaml.Unmarshal(content, cfg); err != nil {
			logger.Get().With(zap.Error(err)).Error("Failed to unmarshal the config file")
			return
		}
	}
	if err := cfg.Validate(); err != nil {
		logger.Get().With(zap.Error(err)).Error("Failed to validate the config file")
		return
	}

	if cfg.Log != nil && cfg.Log.Filename != "" {
		logger.Get().Info("Logs will be saved to " + cfg.Log.Filename)
		if err := logger.InitLoggerRotate(cfg.Log.Level, cfg.Log.Filename, cfg.Log.MaxBackups, cfg.Log.MaxAge, cfg.Log.MaxSize, cfg.Log.Compress); err != nil {
			logger.Get().With(zap.Error(err)).Error("Failed to init the log rotate")
			return
		}
	}

	srv, err := server.NewServer(cfg)
	if err != nil {
		logger.Get().With(zap.Error(err)).Error("Failed to create the server")
		return
	}
	if err := srv.Start(ctx); err != nil {
		logger.Get().With(zap.Error(err)).Error("Failed to start the server")
		return
	}

	// wait for the term signal
	<-shutdownCh
	if err := srv.Stop(); err != nil {
		logger.Get().With(zap.Error(err)).Error("Failed to close the server")
	} else {
		logger.Get().Info("Bye bye, Kvrocks controller was exited")
	}
}