forked from linkedin/Burrow
/
zookeeper.go
78 lines (67 loc) · 1.99 KB
/
zookeeper.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
/* Copyright 2015 LinkedIn Corp. Licensed under the Apache License, Version
* 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*/
package main
import (
"fmt"
"github.com/samuel/go-zookeeper/zk"
"time"
)
type ZookeeperClient struct {
app *ApplicationContext
cluster string
conn *zk.Conn
}
func NewZookeeperClient(app *ApplicationContext, cluster string) (*ZookeeperClient, error) {
zkhosts := make([]string, len(app.Config.Kafka[cluster].Zookeepers))
for i, host := range app.Config.Kafka[cluster].Zookeepers {
zkhosts[i] = fmt.Sprintf("%s:%v", host, app.Config.Kafka[cluster].ZookeeperPort)
}
zkconn, _, err := zk.Connect(zkhosts, time.Duration(app.Config.Zookeeper.Timeout)*time.Second)
if err != nil {
return nil, err
}
client := &ZookeeperClient{
app: app,
cluster: cluster,
conn: zkconn,
}
return client, nil
}
func (zkClient *ZookeeperClient) Stop() {
zkClient.conn.Close()
}
func (zkClient *ZookeeperClient) NewLock(path string) *zk.Lock {
// Pass through to the connection NewLock, without ACLs
return zk.NewLock(zkClient.conn, path, make([]zk.ACL, 0))
}
func (zkClient *ZookeeperClient) RecursiveDelete(path string) {
if path == "/" {
panic("Do not try and delete the root znode")
}
children, _, err := zkClient.conn.Children(path)
switch {
case err == nil:
for _, child := range children {
zkClient.RecursiveDelete(path + "/" + child)
}
case err == zk.ErrNoNode:
return
default:
panic(err)
}
_, stat, err := zkClient.conn.Get(path)
if (err != nil) && (err != zk.ErrNoNode) {
panic(err)
}
err = zkClient.conn.Delete(path, stat.Version)
if (err != nil) && (err != zk.ErrNoNode) {
panic(err)
}
}