sd

type SD interface {
	// Update update node record
	Update(listenIP, listenPort string, dc []string, weight int64) error
	// Delete delete node record (with ip/port/dcs)
	Delete(ip, port string, dcs []string) error
	// Delete delete node record
	DeleteNode(node string) (err error)
	// Clear clear node record (all except with current listen IP/port)
	Clear(listenIP, listenPort string) error
	// Nodes return all registered nodes (for all hostnames in namespace)
	Nodes() (nodes []utils.KV, err error)
	// List return all registered nodes for hostname
	List() (nodes []string, err error)
	// Namespace return namespace
	Namespace() string
}