简单的例子来测试下基本的操作:
package main
/**
客户端doc地址:github.com/samuel/go-zookeeper/zk
**/
import (
"fmt"
"time"
zk "github.com/samuel/go-zookeeper/zk"
)
/**
* 获取一个zk连接
* @return {[type]}
*/
func getConnect(zkList []string) (conn *zk.Conn) {
conn, _, err := zk.Connect(zkList, 10*time.Second)
if err != nil {
fmt.Println(err)
}
return
}
/**
* 测试连接
* @return
*/
func test1() {
zkList := []string{"localhost:2181"}
conn := getConnect(zkList)
defer conn.Close()
var flags int32 = 0
//flags有4种取值:
//0:永久,除非手动删除
//zk.FlagEphemeral = 1:短暂,session断开则改节点也被删除
//zk.FlagSequence = 2:会自动在节点后面添加序号
//3:Ephemeral和Sequence,即,短暂且自动添加序号
conn.Create("/go_servers", nil, flags, zk.WorldACL(zk.PermAll)) // zk.WorldACL(zk.PermAll)控制访问权限模式
time.Sleep(20 * time.Second)
}
/*
删改与增不同在于其函数中的version参数,其中version是用于 CAS支持
func (c *Conn) Set(path string, data []byte, version int32) (*Stat, error)
func (c *Conn) Delete(path string, version int32) error
demo:
if err = conn.Delete(migrateLockPath, -1); err != nil {
log.Error("conn.Delete(\"%s\") error(%v)", migrateLockPath, err)
}
*/
/**
* 测试临时节点
* @return {[type]}
*/
func test2() {
zkList := []string{"localhost:2181"}
conn := getConnect(zkList)
defer conn.Close()
conn.Create("/testadaadsasdsaw", nil, zk.FlagEphemeral, zk.WorldACL(zk.PermAll))
time.Sleep(20 * time.Second)
}
/**
* 获取所有节点
*/
func test3() {
zkList := []string{"localhost:2181"}
conn := getConnect(zkList)
defer conn.Close()
children, _, err := conn.Children("/go_servers")
if err != nil {
fmt.Println(err)
}
fmt.Printf("%v \n", children)
}
func main() {
test3()
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