func GetNodes(conn *zk.Conn, path string) ([]string, error) {
nodes, stat, err := conn.Children(path)
if err != nil {
if err == zk.ErrNoNode {
return nil, ErrNodeNotExist
}
log.Errorf("zk.Children(\"%s\") error(%v)", path, err)
return nil, err
}
if stat == nil {
return nil, ErrNodeNotExist
}
if len(nodes) == 0 {
return nil, ErrNoChild
}
return nodes, nil
}
func Register(conn *zk.Conn, fpath string, data []byte) error {
_, err := conn.Create(fpath+"/", data, zk.FlagEphemeral|zk.FlagSequence, zk.WorldACL(zk.PermAll))
if err != nil && err != zk.ErrNodeExists {
return err
}
log.Infof("create zk node:%s", fpath)
// watch self
go func() {
for {
exist, _, watch, err := conn.ExistsW(fpath)
if err != nil {
log.Warnf("failed zk node \"%s\" set watch, [%v]", fpath, err)
return
}
if !exist {
log.Warnf("zk node \"%s\" not exist, [%v]", fpath, err)
return
}
event := <-watch
log.Infof("\"%s\" receive a event %v", fpath, event)
}
}()
return nil
}