-
Notifications
You must be signed in to change notification settings - Fork 0
/
InMemoryZKServer.java
196 lines (166 loc) · 5.24 KB
/
InMemoryZKServer.java
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
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.twill.internal.zookeeper;
import com.google.common.base.Preconditions;
import com.google.common.io.Files;
import com.google.common.util.concurrent.AbstractIdleService;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.Service;
import org.apache.zookeeper.server.ServerCnxnFactory;
import org.apache.zookeeper.server.ZooKeeperServer;
import org.apache.zookeeper.server.persistence.FileTxnSnapLog;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.concurrent.Executor;
/**
*
*/
public final class InMemoryZKServer implements Service {
private static final Logger LOG = LoggerFactory.getLogger(InMemoryZKServer.class);
private final File dataDir;
private final int tickTime;
private final boolean autoClean;
private final int port;
private final Service delegateService = new AbstractIdleService() {
@Override
protected void startUp() throws Exception {
ZooKeeperServer zkServer = new ZooKeeperServer();
FileTxnSnapLog ftxn = new FileTxnSnapLog(dataDir, dataDir);
zkServer.setTxnLogFactory(ftxn);
zkServer.setTickTime(tickTime);
factory = ServerCnxnFactory.createFactory();
factory.configure(getAddress(port), -1);
factory.startup(zkServer);
LOG.info("In memory ZK started: " + getConnectionStr());
}
@Override
protected void shutDown() throws Exception {
try {
factory.shutdown();
} finally {
if (autoClean) {
cleanDir(dataDir);
}
}
}
};
private ServerCnxnFactory factory;
public static Builder builder() {
return new Builder();
}
private InMemoryZKServer(File dataDir, int tickTime, boolean autoClean, int port) {
if (dataDir == null) {
dataDir = Files.createTempDir();
autoClean = true;
} else {
Preconditions.checkArgument(dataDir.isDirectory() || dataDir.mkdirs() || dataDir.isDirectory());
}
this.dataDir = dataDir;
this.tickTime = tickTime;
this.autoClean = autoClean;
this.port = port;
}
public String getConnectionStr() {
InetSocketAddress addr = factory.getLocalAddress();
return String.format("%s:%d", addr.getHostName(), addr.getPort());
}
public InetSocketAddress getLocalAddress() {
return factory.getLocalAddress();
}
private InetSocketAddress getAddress(int port) {
int socketPort = port < 0 ? 0 : port;
if (Boolean.parseBoolean(System.getProperties().getProperty("twill.zk.server.localhost", "true"))) {
return new InetSocketAddress(InetAddress.getLoopbackAddress(), socketPort);
} else {
return new InetSocketAddress(socketPort);
}
}
private void cleanDir(File dir) {
File[] files = dir.listFiles();
if (files == null) {
return;
}
for (File file : files) {
if (file.isDirectory()) {
cleanDir(file);
}
file.delete();
}
}
@Override
public ListenableFuture<State> start() {
return delegateService.start();
}
@Override
public State startAndWait() {
return delegateService.startAndWait();
}
@Override
public boolean isRunning() {
return delegateService.isRunning();
}
@Override
public State state() {
return delegateService.state();
}
@Override
public ListenableFuture<State> stop() {
return delegateService.stop();
}
@Override
public State stopAndWait() {
return delegateService.stopAndWait();
}
@Override
public void addListener(Listener listener, Executor executor) {
delegateService.addListener(listener, executor);
}
/**
* Builder for creating instance of {@link InMemoryZKServer}.
*/
public static final class Builder {
private File dataDir;
private boolean autoCleanDataDir = false;
private int tickTime = ZooKeeperServer.DEFAULT_TICK_TIME;
private int port = -1;
public Builder setDataDir(File dataDir) {
this.dataDir = dataDir;
return this;
}
public Builder setAutoCleanDataDir(boolean auto) {
this.autoCleanDataDir = auto;
return this;
}
public Builder setTickTime(int tickTime) {
this.tickTime = tickTime;
return this;
}
public Builder setPort(int port) {
this.port = port;
return this;
}
public InMemoryZKServer build() {
return new InMemoryZKServer(dataDir, tickTime, autoCleanDataDir, port);
}
private Builder() {
}
}
}