func NewServer()

in server/server.go [55:98]
41 lines of code
8 McCabe index (conditional complexity)

func NewServer(cfg *config.Config) (*Server, error) {
	var persist engine.Engine
	var err error

	sessionID := helper.GenerateSessionID(cfg.Addr)
	storageType := strings.ToLower(cfg.StorageType)
	switch storageType {
	case "etcd":
		logger.Get().Info("Use Etcd as store")
		persist, err = etcd.New(sessionID, cfg.Etcd)
	case "zookeeper":
		logger.Get().Info("Use Zookeeper as store")
		persist, err = zookeeper.New(sessionID, cfg.Zookeeper)
	case "raft":
		logger.Get().Info("Use Raft as store")
		persist, err = raft.New(cfg.Raft)
	case "consul":
		logger.Get().Info("Use Consul as store")
		persist, err = consul.New(sessionID, cfg.Consul)
	default:
		logger.Get().Info("Use Etcd as default store")
		persist, err = etcd.New(sessionID, cfg.Etcd)
	}

	if err != nil {
		return nil, err
	}
	if persist == nil {
		return nil, fmt.Errorf("no found any store config")
	}

	clusterStore := store.NewClusterStore(persist)
	ctrl, err := controller.New(clusterStore, cfg.Controller)
	if err != nil {
		return nil, err
	}
	gin.SetMode(gin.ReleaseMode)
	return &Server{
		store:      clusterStore,
		controller: ctrl,
		config:     cfg,
		engine:     gin.New(),
	}, nil
}