etcdv3

var JsonBindHandle = func(bind *EtcdBind) error {
	response := bind.Response
	logger.Debugf("JsonBindHandle: bind: %v ", bind)
	for _, e := range response.Events {
		logger.Debugf("e: %v ", e)

		eventType := e.Type
		switch eventType {
		case clientv3.EventTypeDelete:
			i := bind.KV.Result
			delete(i, string(e.Kv.Key))
			err := fmt.Errorf("Etcd is deleted: %s \n", bind.Key)
			logger.Errorf(err.Error())
			return err
		default:
			kv := e.Kv

			if kv == nil {
				logger.Errorf("kv is nil!!")
				return errors.New("kv is nil!!")
			}
			bindKV := bind.KV
			key := string(kv.Key)
			v := kv.Value
			target := bindKV.BindTargetFunc()
			json.Unmarshal(v, target)
			bind.KV.Result[key] = target
			logger.Debugf("Bind key: %s value: %s to target: %v \n", key, string(v), target)
		}
	}
	return nil
}

var StringBindFunc = func(bind *EtcdBind) error {
	response := bind.Response
	for _, e := range response.Events {
		eventType := e.Type
		switch eventType {
		case clientv3.EventTypeDelete:
			err := fmt.Errorf("Etcd is deleted: %s \n", bind.Key)
			logger.Errorf(err.Error())
			return err
		default:
			kv := e.Kv
			key := string(kv.Key)
			ptr := bind.KV.BindTargetFunc()
			logger.Debugf("bind key: %s to target: %v \n", key, ptr)
			strPtr := ptr.(*string)
			*strPtr = string(kv.Value)
			logger.Debugf("binded key: %s target: %v \n", key, *strPtr)
			bind.KV.Result[key] = strPtr
		}
	}
	return nil
}