forked from etcd-io/etcd
-
Notifications
You must be signed in to change notification settings - Fork 0
/
util.go
256 lines (205 loc) · 5.5 KB
/
util.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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
/*
Copyright 2013 CoreOS Inc.
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.
See the License for the specific language governing permissions and
limitations under the License.
*/
package test
import (
"errors"
"fmt"
"io/ioutil"
"net"
"net/http"
"os"
"strconv"
"time"
"github.com/coreos/etcd/third_party/github.com/coreos/go-etcd/etcd"
)
var client = http.Client{
Transport: &http.Transport{
Dial: dialTimeoutFast,
},
}
// Sending set commands
func Set(stop chan bool) {
stopSet := false
i := 0
c := etcd.NewClient(nil)
for {
key := fmt.Sprintf("%s_%v", "foo", i)
result, err := c.Set(key, "bar", 0)
if err != nil || result.Node.Key != "/"+key || result.Node.Value != "bar" {
select {
case <-stop:
stopSet = true
default:
}
}
select {
case <-stop:
stopSet = true
default:
}
if stopSet {
break
}
i++
}
stop <- true
}
func WaitForServer(host string, client http.Client, scheme string) error {
path := fmt.Sprintf("%s://%s/v2/keys/", scheme, host)
var resp *http.Response
var err error
for i := 0; i < 10; i++ {
time.Sleep(1 * time.Second)
resp, err = client.Get(path)
if err == nil && resp.StatusCode == 200 {
return nil
}
}
return errors.New(fmt.Sprintf("etcd server was not reachable in a long time, last-time response and error: %v; %v", resp, err))
}
// Create a cluster of etcd nodes
func CreateCluster(size int, procAttr *os.ProcAttr, ssl bool) ([][]string, []*os.Process, error) {
argGroup := make([][]string, size)
sslServer1 := []string{"-peer-ca-file=../../fixtures/ca/ca.crt",
"-peer-cert-file=../../fixtures/ca/server.crt",
"-peer-key-file=../../fixtures/ca/server.key.insecure",
}
sslServer2 := []string{"-peer-ca-file=../../fixtures/ca/ca.crt",
"-peer-cert-file=../../fixtures/ca/server2.crt",
"-peer-key-file=../../fixtures/ca/server2.key.insecure",
}
for i := 0; i < size; i++ {
if i == 0 {
argGroup[i] = []string{"etcd", "-data-dir=/tmp/node1", "-name=node1", "-cluster-remove-delay=1800"}
if ssl {
argGroup[i] = append(argGroup[i], sslServer1...)
}
} else {
strI := strconv.Itoa(i + 1)
argGroup[i] = []string{"etcd", "-name=node" + strI, fmt.Sprintf("-addr=127.0.0.1:%d", 4001+i), fmt.Sprintf("-peer-addr=127.0.0.1:%d", 7001+i), "-data-dir=/tmp/node" + strI, "-peers=127.0.0.1:7001", "-cluster-remove-delay=1800"}
if ssl {
argGroup[i] = append(argGroup[i], sslServer2...)
}
}
}
etcds := make([]*os.Process, size)
for i := range etcds {
var err error
etcds[i], err = os.StartProcess(EtcdBinPath, append(argGroup[i], "-f"), procAttr)
if err != nil {
return nil, nil, err
}
// The problem is that if the master isn't up then the children
// have to retry. This retry can take upwards of 15 seconds
// which slows tests way down and some of them fail.
//
// Waiting for each server to start when ssl is a workaround.
// Autotest machines are dramatically slow, and it could spend
// several seconds to build TSL connections between servers. That
// is extremely terribe when the second machine joins the cluster
// because the cluster is out of work at this time. The guy
// tries to join during this time will fail, and current implementation
// makes it fail after just one-time try(bug in #661). This
// makes the cluster start with N-1 machines.
// TODO(yichengq): It should be fixed.
if i == 0 || ssl {
client := buildClient()
err = WaitForServer("127.0.0.1:400"+strconv.Itoa(i+1), client, "http")
if err != nil {
return nil, nil, err
}
}
}
return argGroup, etcds, nil
}
// Destroy all the nodes in the cluster
func DestroyCluster(etcds []*os.Process) error {
for _, etcd := range etcds {
if etcd == nil {
continue
}
err := etcd.Kill()
if err != nil {
panic(err.Error())
}
etcd.Release()
}
return nil
}
//
func Monitor(size int, allowDeadNum int, leaderChan chan string, all chan bool, stop chan bool) {
leaderMap := make(map[int]string)
baseAddrFormat := "http://0.0.0.0:%d"
for {
knownLeader := "unknown"
dead := 0
var i int
for i = 0; i < size; i++ {
leader, err := getLeader(fmt.Sprintf(baseAddrFormat, i+4001))
if err == nil {
leaderMap[i] = leader
if knownLeader == "unknown" {
knownLeader = leader
} else {
if leader != knownLeader {
break
}
}
} else {
dead++
if dead > allowDeadNum {
break
}
}
}
if i == size {
select {
case <-stop:
return
case <-leaderChan:
leaderChan <- knownLeader
default:
leaderChan <- knownLeader
}
}
if dead == 0 {
select {
case <-all:
all <- true
default:
all <- true
}
}
time.Sleep(time.Millisecond * 10)
}
}
func getLeader(addr string) (string, error) {
resp, err := client.Get(addr + "/v1/leader")
if err != nil {
return "", err
}
if resp.StatusCode != http.StatusOK {
resp.Body.Close()
return "", fmt.Errorf("no leader")
}
b, err := ioutil.ReadAll(resp.Body)
resp.Body.Close()
if err != nil {
return "", err
}
return string(b), nil
}
// Dial with timeout
func dialTimeoutFast(network, addr string) (net.Conn, error) {
return net.DialTimeout(network, addr, time.Millisecond*10)
}