//
// 删除Service Endpoint
//
func (s *ServiceEndpoint) DeleteServiceEndpoint(top *zk.Topology) {
path := top.ProductServiceEndPointPath(s.Service, s.ServiceId)
if ok, _ := top.Exist(path); ok {
zkhelper.DeleteRecursive(top.ZkConn, path, -1)
log.Println(Red("DeleteServiceEndpoint"), "Path: ", path)
}
}
func GetServiceEndpoint(top *zk.Topology, service string, serviceId string) (endpoint *ServiceEndpoint, err error) {
path := top.ProductServiceEndPointPath(service, serviceId)
data, _, err := top.ZkConn.Get(path)
if err != nil {
return nil, err
}
endpoint = &ServiceEndpoint{}
err = json.Unmarshal(data, endpoint)
if err != nil {
return nil, err
} else {
return endpoint, nil
}
}
//
// 注册一个服务的Endpoints
//
func (s *ServiceEndpoint) AddServiceEndpoint(topo *zk.Topology) error {
path := topo.ProductServiceEndPointPath(s.Service, s.ServiceId)
data, err := json.Marshal(s)
if err != nil {
return err
}
// 创建Service(XXX: Service本身不包含数据)
zk.CreateRecursive(topo.ZkConn, os_path.Dir(path), "", 0, zkhelper.DefaultDirACLs())
// 当前的Session挂了，服务就下线
// topo.FlagEphemeral
// 参考： https://www.box.com/blog/a-gotcha-when-using-zookeeper-ephemeral-nodes/
// 如果之前的Session信息还存在，则先删除；然后再添加
topo.ZkConn.Delete(path, -1)
var pathCreated string
pathCreated, err = topo.ZkConn.Create(path, []byte(data), int32(zookeeper.FlagEphemeral), zkhelper.DefaultFileACLs())
log.Println(Green("AddServiceEndpoint"), "Path: ", pathCreated, ", Error: ", err)
return err
}