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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.zookeeper;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import static org.junit.Assert.assertEquals;</span> |
| <span class="source-line-no">021</span><span id="line-21">import static org.junit.Assert.assertFalse;</span> |
| <span class="source-line-no">022</span><span id="line-22">import static org.junit.Assert.assertNull;</span> |
| <span class="source-line-no">023</span><span id="line-23">import static org.junit.Assert.assertTrue;</span> |
| <span class="source-line-no">024</span><span id="line-24"></span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.List;</span> |
| <span class="source-line-no">026</span><span id="line-26">import java.util.concurrent.Semaphore;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.hbase.HBaseZKTestingUtil;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.ServerName;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.testclassification.MediumTests;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.testclassification.ZKTests;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;</span> |
| <span class="source-line-no">033</span><span id="line-33">import org.junit.After;</span> |
| <span class="source-line-no">034</span><span id="line-34">import org.junit.AfterClass;</span> |
| <span class="source-line-no">035</span><span id="line-35">import org.junit.BeforeClass;</span> |
| <span class="source-line-no">036</span><span id="line-36">import org.junit.ClassRule;</span> |
| <span class="source-line-no">037</span><span id="line-37">import org.junit.Rule;</span> |
| <span class="source-line-no">038</span><span id="line-38">import org.junit.Test;</span> |
| <span class="source-line-no">039</span><span id="line-39">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">040</span><span id="line-40">import org.junit.rules.TestName;</span> |
| <span class="source-line-no">041</span><span id="line-41">import org.slf4j.Logger;</span> |
| <span class="source-line-no">042</span><span id="line-42">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">043</span><span id="line-43"></span> |
| <span class="source-line-no">044</span><span id="line-44">@Category({ ZKTests.class, MediumTests.class })</span> |
| <span class="source-line-no">045</span><span id="line-45">public class TestMasterAddressTracker {</span> |
| <span class="source-line-no">046</span><span id="line-46"></span> |
| <span class="source-line-no">047</span><span id="line-47"> @ClassRule</span> |
| <span class="source-line-no">048</span><span id="line-48"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">049</span><span id="line-49"> HBaseClassTestRule.forClass(TestMasterAddressTracker.class);</span> |
| <span class="source-line-no">050</span><span id="line-50"></span> |
| <span class="source-line-no">051</span><span id="line-51"> private static final Logger LOG = LoggerFactory.getLogger(TestMasterAddressTracker.class);</span> |
| <span class="source-line-no">052</span><span id="line-52"></span> |
| <span class="source-line-no">053</span><span id="line-53"> private final static HBaseZKTestingUtil TEST_UTIL = new HBaseZKTestingUtil();</span> |
| <span class="source-line-no">054</span><span id="line-54"></span> |
| <span class="source-line-no">055</span><span id="line-55"> // Cleaned up after each unit test.</span> |
| <span class="source-line-no">056</span><span id="line-56"> private ZKWatcher zk;</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58"> @Rule</span> |
| <span class="source-line-no">059</span><span id="line-59"> public TestName name = new TestName();</span> |
| <span class="source-line-no">060</span><span id="line-60"></span> |
| <span class="source-line-no">061</span><span id="line-61"> @After</span> |
| <span class="source-line-no">062</span><span id="line-62"> public void cleanUp() {</span> |
| <span class="source-line-no">063</span><span id="line-63"> if (zk != null) {</span> |
| <span class="source-line-no">064</span><span id="line-64"> zk.close();</span> |
| <span class="source-line-no">065</span><span id="line-65"> }</span> |
| <span class="source-line-no">066</span><span id="line-66"> }</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> @BeforeClass</span> |
| <span class="source-line-no">069</span><span id="line-69"> public static void setUpBeforeClass() throws Exception {</span> |
| <span class="source-line-no">070</span><span id="line-70"> TEST_UTIL.startMiniZKCluster();</span> |
| <span class="source-line-no">071</span><span id="line-71"> }</span> |
| <span class="source-line-no">072</span><span id="line-72"></span> |
| <span class="source-line-no">073</span><span id="line-73"> @AfterClass</span> |
| <span class="source-line-no">074</span><span id="line-74"> public static void tearDownAfterClass() throws Exception {</span> |
| <span class="source-line-no">075</span><span id="line-75"> TEST_UTIL.shutdownMiniZKCluster();</span> |
| <span class="source-line-no">076</span><span id="line-76"> }</span> |
| <span class="source-line-no">077</span><span id="line-77"></span> |
| <span class="source-line-no">078</span><span id="line-78"> @Test</span> |
| <span class="source-line-no">079</span><span id="line-79"> public void testDeleteIfEquals() throws Exception {</span> |
| <span class="source-line-no">080</span><span id="line-80"> final ServerName sn =</span> |
| <span class="source-line-no">081</span><span id="line-81"> ServerName.valueOf("localhost", 1234, EnvironmentEdgeManager.currentTime());</span> |
| <span class="source-line-no">082</span><span id="line-82"> final MasterAddressTracker addressTracker = setupMasterTracker(sn, 1772);</span> |
| <span class="source-line-no">083</span><span id="line-83"> try {</span> |
| <span class="source-line-no">084</span><span id="line-84"> assertFalse("shouldn't have deleted wrong master server.",</span> |
| <span class="source-line-no">085</span><span id="line-85"> MasterAddressTracker.deleteIfEquals(addressTracker.getWatcher(), "some other string."));</span> |
| <span class="source-line-no">086</span><span id="line-86"> } finally {</span> |
| <span class="source-line-no">087</span><span id="line-87"> assertTrue("Couldn't clean up master",</span> |
| <span class="source-line-no">088</span><span id="line-88"> MasterAddressTracker.deleteIfEquals(addressTracker.getWatcher(), sn.toString()));</span> |
| <span class="source-line-no">089</span><span id="line-89"> }</span> |
| <span class="source-line-no">090</span><span id="line-90"> }</span> |
| <span class="source-line-no">091</span><span id="line-91"></span> |
| <span class="source-line-no">092</span><span id="line-92"> /**</span> |
| <span class="source-line-no">093</span><span id="line-93"> * create an address tracker instance</span> |
| <span class="source-line-no">094</span><span id="line-94"> * @param sn if not-null set the active master</span> |
| <span class="source-line-no">095</span><span id="line-95"> * @param infoPort if there is an active master, set its info port.</span> |
| <span class="source-line-no">096</span><span id="line-96"> */</span> |
| <span class="source-line-no">097</span><span id="line-97"> private MasterAddressTracker setupMasterTracker(final ServerName sn, final int infoPort)</span> |
| <span class="source-line-no">098</span><span id="line-98"> throws Exception {</span> |
| <span class="source-line-no">099</span><span id="line-99"> zk = new ZKWatcher(TEST_UTIL.getConfiguration(), name.getMethodName(), null);</span> |
| <span class="source-line-no">100</span><span id="line-100"> ZKUtil.createAndFailSilent(zk, zk.getZNodePaths().baseZNode);</span> |
| <span class="source-line-no">101</span><span id="line-101"> ZKUtil.createAndFailSilent(zk, zk.getZNodePaths().backupMasterAddressesZNode);</span> |
| <span class="source-line-no">102</span><span id="line-102"></span> |
| <span class="source-line-no">103</span><span id="line-103"> // Should not have a master yet</span> |
| <span class="source-line-no">104</span><span id="line-104"> MasterAddressTracker addressTracker = new MasterAddressTracker(zk, null);</span> |
| <span class="source-line-no">105</span><span id="line-105"> addressTracker.start();</span> |
| <span class="source-line-no">106</span><span id="line-106"> assertFalse(addressTracker.hasMaster());</span> |
| <span class="source-line-no">107</span><span id="line-107"> zk.registerListener(addressTracker);</span> |
| <span class="source-line-no">108</span><span id="line-108"></span> |
| <span class="source-line-no">109</span><span id="line-109"> // Use a listener to capture when the node is actually created</span> |
| <span class="source-line-no">110</span><span id="line-110"> NodeCreationListener listener =</span> |
| <span class="source-line-no">111</span><span id="line-111"> new NodeCreationListener(zk, zk.getZNodePaths().masterAddressZNode);</span> |
| <span class="source-line-no">112</span><span id="line-112"> zk.registerListener(listener);</span> |
| <span class="source-line-no">113</span><span id="line-113"></span> |
| <span class="source-line-no">114</span><span id="line-114"> if (sn != null) {</span> |
| <span class="source-line-no">115</span><span id="line-115"> LOG.info("Creating master node");</span> |
| <span class="source-line-no">116</span><span id="line-116"> MasterAddressTracker.setMasterAddress(zk, zk.getZNodePaths().masterAddressZNode, sn,</span> |
| <span class="source-line-no">117</span><span id="line-117"> infoPort);</span> |
| <span class="source-line-no">118</span><span id="line-118"></span> |
| <span class="source-line-no">119</span><span id="line-119"> // Wait for the node to be created</span> |
| <span class="source-line-no">120</span><span id="line-120"> LOG.info("Waiting for master address manager to be notified");</span> |
| <span class="source-line-no">121</span><span id="line-121"> listener.waitForCreation();</span> |
| <span class="source-line-no">122</span><span id="line-122"> LOG.info("Master node created");</span> |
| <span class="source-line-no">123</span><span id="line-123"> }</span> |
| <span class="source-line-no">124</span><span id="line-124"> return addressTracker;</span> |
| <span class="source-line-no">125</span><span id="line-125"> }</span> |
| <span class="source-line-no">126</span><span id="line-126"></span> |
| <span class="source-line-no">127</span><span id="line-127"> /**</span> |
| <span class="source-line-no">128</span><span id="line-128"> * Unit tests that uses ZooKeeper but does not use the master-side methods but rather acts</span> |
| <span class="source-line-no">129</span><span id="line-129"> * directly on ZK.</span> |
| <span class="source-line-no">130</span><span id="line-130"> */</span> |
| <span class="source-line-no">131</span><span id="line-131"> @Test</span> |
| <span class="source-line-no">132</span><span id="line-132"> public void testMasterAddressTrackerFromZK() throws Exception {</span> |
| <span class="source-line-no">133</span><span id="line-133"> // Create the master node with a dummy address</span> |
| <span class="source-line-no">134</span><span id="line-134"> final int infoPort = 1235;</span> |
| <span class="source-line-no">135</span><span id="line-135"> final ServerName sn =</span> |
| <span class="source-line-no">136</span><span id="line-136"> ServerName.valueOf("localhost", 1234, EnvironmentEdgeManager.currentTime());</span> |
| <span class="source-line-no">137</span><span id="line-137"> final MasterAddressTracker addressTracker = setupMasterTracker(sn, infoPort);</span> |
| <span class="source-line-no">138</span><span id="line-138"> try {</span> |
| <span class="source-line-no">139</span><span id="line-139"> assertTrue(addressTracker.hasMaster());</span> |
| <span class="source-line-no">140</span><span id="line-140"> ServerName pulledAddress = addressTracker.getMasterAddress();</span> |
| <span class="source-line-no">141</span><span id="line-141"> assertTrue(pulledAddress.equals(sn));</span> |
| <span class="source-line-no">142</span><span id="line-142"> assertEquals(infoPort, addressTracker.getMasterInfoPort());</span> |
| <span class="source-line-no">143</span><span id="line-143"> } finally {</span> |
| <span class="source-line-no">144</span><span id="line-144"> assertTrue("Couldn't clean up master",</span> |
| <span class="source-line-no">145</span><span id="line-145"> MasterAddressTracker.deleteIfEquals(addressTracker.getWatcher(), sn.toString()));</span> |
| <span class="source-line-no">146</span><span id="line-146"> }</span> |
| <span class="source-line-no">147</span><span id="line-147"> }</span> |
| <span class="source-line-no">148</span><span id="line-148"></span> |
| <span class="source-line-no">149</span><span id="line-149"> @Test</span> |
| <span class="source-line-no">150</span><span id="line-150"> public void testParsingNull() throws Exception {</span> |
| <span class="source-line-no">151</span><span id="line-151"> assertNull("parse on null data should return null.", MasterAddressTracker.parse(null));</span> |
| <span class="source-line-no">152</span><span id="line-152"> }</span> |
| <span class="source-line-no">153</span><span id="line-153"></span> |
| <span class="source-line-no">154</span><span id="line-154"> @Test</span> |
| <span class="source-line-no">155</span><span id="line-155"> public void testNoBackups() throws Exception {</span> |
| <span class="source-line-no">156</span><span id="line-156"> final ServerName sn =</span> |
| <span class="source-line-no">157</span><span id="line-157"> ServerName.valueOf("localhost", 1234, EnvironmentEdgeManager.currentTime());</span> |
| <span class="source-line-no">158</span><span id="line-158"> final MasterAddressTracker addressTracker = setupMasterTracker(sn, 1772);</span> |
| <span class="source-line-no">159</span><span id="line-159"> try {</span> |
| <span class="source-line-no">160</span><span id="line-160"> assertEquals("Should receive 0 for backup not found.", 0,</span> |
| <span class="source-line-no">161</span><span id="line-161"> addressTracker.getBackupMasterInfoPort(ServerName.valueOf("doesnotexist.example.com", 1234,</span> |
| <span class="source-line-no">162</span><span id="line-162"> EnvironmentEdgeManager.currentTime())));</span> |
| <span class="source-line-no">163</span><span id="line-163"> } finally {</span> |
| <span class="source-line-no">164</span><span id="line-164"> assertTrue("Couldn't clean up master",</span> |
| <span class="source-line-no">165</span><span id="line-165"> MasterAddressTracker.deleteIfEquals(addressTracker.getWatcher(), sn.toString()));</span> |
| <span class="source-line-no">166</span><span id="line-166"> }</span> |
| <span class="source-line-no">167</span><span id="line-167"> }</span> |
| <span class="source-line-no">168</span><span id="line-168"></span> |
| <span class="source-line-no">169</span><span id="line-169"> @Test</span> |
| <span class="source-line-no">170</span><span id="line-170"> public void testNoMaster() throws Exception {</span> |
| <span class="source-line-no">171</span><span id="line-171"> final MasterAddressTracker addressTracker = setupMasterTracker(null, 1772);</span> |
| <span class="source-line-no">172</span><span id="line-172"> assertFalse(addressTracker.hasMaster());</span> |
| <span class="source-line-no">173</span><span id="line-173"> assertNull("should get null master when none active.", addressTracker.getMasterAddress());</span> |
| <span class="source-line-no">174</span><span id="line-174"> assertEquals("Should receive 0 for backup not found.", 0, addressTracker.getMasterInfoPort());</span> |
| <span class="source-line-no">175</span><span id="line-175"> }</span> |
| <span class="source-line-no">176</span><span id="line-176"></span> |
| <span class="source-line-no">177</span><span id="line-177"> @Test</span> |
| <span class="source-line-no">178</span><span id="line-178"> public void testBackupMasters() throws Exception {</span> |
| <span class="source-line-no">179</span><span id="line-179"> final ServerName sn =</span> |
| <span class="source-line-no">180</span><span id="line-180"> ServerName.valueOf("localhost", 5678, EnvironmentEdgeManager.currentTime());</span> |
| <span class="source-line-no">181</span><span id="line-181"> final MasterAddressTracker addressTracker = setupMasterTracker(sn, 1111);</span> |
| <span class="source-line-no">182</span><span id="line-182"> assertTrue(addressTracker.hasMaster());</span> |
| <span class="source-line-no">183</span><span id="line-183"> ServerName activeMaster = addressTracker.getMasterAddress();</span> |
| <span class="source-line-no">184</span><span id="line-184"> assertEquals(activeMaster, sn);</span> |
| <span class="source-line-no">185</span><span id="line-185"> // No current backup masters</span> |
| <span class="source-line-no">186</span><span id="line-186"> List<ServerName> backupMasters = addressTracker.getBackupMasters();</span> |
| <span class="source-line-no">187</span><span id="line-187"> assertEquals(0, backupMasters.size());</span> |
| <span class="source-line-no">188</span><span id="line-188"> ServerName backupMaster1 = ServerName.valueOf("localhost", 2222, -1);</span> |
| <span class="source-line-no">189</span><span id="line-189"> ServerName backupMaster2 = ServerName.valueOf("localhost", 3333, -1);</span> |
| <span class="source-line-no">190</span><span id="line-190"> String backupZNode1 =</span> |
| <span class="source-line-no">191</span><span id="line-191"> ZNodePaths.joinZNode(zk.getZNodePaths().backupMasterAddressesZNode, backupMaster1.toString());</span> |
| <span class="source-line-no">192</span><span id="line-192"> String backupZNode2 =</span> |
| <span class="source-line-no">193</span><span id="line-193"> ZNodePaths.joinZNode(zk.getZNodePaths().backupMasterAddressesZNode, backupMaster2.toString());</span> |
| <span class="source-line-no">194</span><span id="line-194"> // Add backup masters</span> |
| <span class="source-line-no">195</span><span id="line-195"> MasterAddressTracker.setMasterAddress(zk, backupZNode1, backupMaster1, 2222);</span> |
| <span class="source-line-no">196</span><span id="line-196"> MasterAddressTracker.setMasterAddress(zk, backupZNode2, backupMaster2, 3333);</span> |
| <span class="source-line-no">197</span><span id="line-197"> TEST_UTIL.waitFor(30000, () -> addressTracker.getBackupMasters().size() == 2);</span> |
| <span class="source-line-no">198</span><span id="line-198"> backupMasters = addressTracker.getBackupMasters();</span> |
| <span class="source-line-no">199</span><span id="line-199"> assertEquals(2, backupMasters.size());</span> |
| <span class="source-line-no">200</span><span id="line-200"> assertTrue(backupMasters.contains(backupMaster1));</span> |
| <span class="source-line-no">201</span><span id="line-201"> assertTrue(backupMasters.contains(backupMaster2));</span> |
| <span class="source-line-no">202</span><span id="line-202"> }</span> |
| <span class="source-line-no">203</span><span id="line-203"></span> |
| <span class="source-line-no">204</span><span id="line-204"> public static class NodeCreationListener extends ZKListener {</span> |
| <span class="source-line-no">205</span><span id="line-205"> private static final Logger LOG = LoggerFactory.getLogger(NodeCreationListener.class);</span> |
| <span class="source-line-no">206</span><span id="line-206"></span> |
| <span class="source-line-no">207</span><span id="line-207"> private Semaphore lock;</span> |
| <span class="source-line-no">208</span><span id="line-208"> private String node;</span> |
| <span class="source-line-no">209</span><span id="line-209"></span> |
| <span class="source-line-no">210</span><span id="line-210"> public NodeCreationListener(ZKWatcher watcher, String node) {</span> |
| <span class="source-line-no">211</span><span id="line-211"> super(watcher);</span> |
| <span class="source-line-no">212</span><span id="line-212"> lock = new Semaphore(0);</span> |
| <span class="source-line-no">213</span><span id="line-213"> this.node = node;</span> |
| <span class="source-line-no">214</span><span id="line-214"> }</span> |
| <span class="source-line-no">215</span><span id="line-215"></span> |
| <span class="source-line-no">216</span><span id="line-216"> @Override</span> |
| <span class="source-line-no">217</span><span id="line-217"> public void nodeCreated(String path) {</span> |
| <span class="source-line-no">218</span><span id="line-218"> if (path.equals(node)) {</span> |
| <span class="source-line-no">219</span><span id="line-219"> LOG.debug("nodeCreated(" + path + ")");</span> |
| <span class="source-line-no">220</span><span id="line-220"> lock.release();</span> |
| <span class="source-line-no">221</span><span id="line-221"> }</span> |
| <span class="source-line-no">222</span><span id="line-222"> }</span> |
| <span class="source-line-no">223</span><span id="line-223"></span> |
| <span class="source-line-no">224</span><span id="line-224"> public void waitForCreation() throws InterruptedException {</span> |
| <span class="source-line-no">225</span><span id="line-225"> lock.acquire();</span> |
| <span class="source-line-no">226</span><span id="line-226"> }</span> |
| <span class="source-line-no">227</span><span id="line-227"> }</span> |
| <span class="source-line-no">228</span><span id="line-228">}</span> |
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| </pre> |
| </div> |
| </main> |
| </body> |
| </html> |
