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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.regionserver;</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.apache.hadoop.hbase.HConstants.NO_NONCE;</span>
<span class="source-line-no">021</span><span id="line-21">import static org.junit.Assert.assertEquals;</span>
<span class="source-line-no">022</span><span id="line-22">import static org.junit.Assert.assertFalse;</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">import static org.junit.Assert.fail;</span>
<span class="source-line-no">025</span><span id="line-25"></span>
<span class="source-line-no">026</span><span id="line-26">import java.util.concurrent.CountDownLatch;</span>
<span class="source-line-no">027</span><span id="line-27">import java.util.concurrent.atomic.AtomicInteger;</span>
<span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.conf.Configuration;</span>
<span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.HBaseClassTestRule;</span>
<span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.HBaseConfiguration;</span>
<span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.ScheduledChore;</span>
<span class="source-line-no">032</span><span id="line-32">import org.apache.hadoop.hbase.Stoppable;</span>
<span class="source-line-no">033</span><span id="line-33">import org.apache.hadoop.hbase.testclassification.RegionServerTests;</span>
<span class="source-line-no">034</span><span id="line-34">import org.apache.hadoop.hbase.testclassification.SmallTests;</span>
<span class="source-line-no">035</span><span id="line-35">import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;</span>
<span class="source-line-no">036</span><span id="line-36">import org.apache.hadoop.hbase.util.ManualEnvironmentEdge;</span>
<span class="source-line-no">037</span><span id="line-37">import org.apache.hadoop.hbase.util.Threads;</span>
<span class="source-line-no">038</span><span id="line-38">import org.junit.ClassRule;</span>
<span class="source-line-no">039</span><span id="line-39">import org.junit.Test;</span>
<span class="source-line-no">040</span><span id="line-40">import org.junit.experimental.categories.Category;</span>
<span class="source-line-no">041</span><span id="line-41">import org.mockito.Mockito;</span>
<span class="source-line-no">042</span><span id="line-42">import org.mockito.invocation.InvocationOnMock;</span>
<span class="source-line-no">043</span><span id="line-43">import org.mockito.stubbing.Answer;</span>
<span class="source-line-no">044</span><span id="line-44"></span>
<span class="source-line-no">045</span><span id="line-45">@Category({ RegionServerTests.class, SmallTests.class })</span>
<span class="source-line-no">046</span><span id="line-46">public class TestServerNonceManager {</span>
<span class="source-line-no">047</span><span id="line-47"></span>
<span class="source-line-no">048</span><span id="line-48"> @ClassRule</span>
<span class="source-line-no">049</span><span id="line-49"> public static final HBaseClassTestRule CLASS_RULE =</span>
<span class="source-line-no">050</span><span id="line-50"> HBaseClassTestRule.forClass(TestServerNonceManager.class);</span>
<span class="source-line-no">051</span><span id="line-51"></span>
<span class="source-line-no">052</span><span id="line-52"> @Test</span>
<span class="source-line-no">053</span><span id="line-53"> public void testMvcc() throws Exception {</span>
<span class="source-line-no">054</span><span id="line-54"> ServerNonceManager nm = createManager();</span>
<span class="source-line-no">055</span><span id="line-55"> final long group = 100;</span>
<span class="source-line-no">056</span><span id="line-56"> final long nonce = 1;</span>
<span class="source-line-no">057</span><span id="line-57"> final long initMvcc = 999;</span>
<span class="source-line-no">058</span><span id="line-58"> assertTrue(nm.startOperation(group, nonce, createStoppable()));</span>
<span class="source-line-no">059</span><span id="line-59"> nm.addMvccToOperationContext(group, nonce, initMvcc);</span>
<span class="source-line-no">060</span><span id="line-60"> nm.endOperation(group, nonce, true);</span>
<span class="source-line-no">061</span><span id="line-61"> assertEquals(initMvcc, nm.getMvccFromOperationContext(group, nonce));</span>
<span class="source-line-no">062</span><span id="line-62"> long newMvcc = initMvcc + 1;</span>
<span class="source-line-no">063</span><span id="line-63"> for (long newNonce = nonce + 1; newNonce != (nonce + 5); ++newNonce) {</span>
<span class="source-line-no">064</span><span id="line-64"> assertTrue(nm.startOperation(group, newNonce, createStoppable()));</span>
<span class="source-line-no">065</span><span id="line-65"> nm.addMvccToOperationContext(group, newNonce, newMvcc);</span>
<span class="source-line-no">066</span><span id="line-66"> nm.endOperation(group, newNonce, true);</span>
<span class="source-line-no">067</span><span id="line-67"> assertEquals(newMvcc, nm.getMvccFromOperationContext(group, newNonce));</span>
<span class="source-line-no">068</span><span id="line-68"> ++newMvcc;</span>
<span class="source-line-no">069</span><span id="line-69"> }</span>
<span class="source-line-no">070</span><span id="line-70"> assertEquals(initMvcc, nm.getMvccFromOperationContext(group, nonce));</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"> @Test</span>
<span class="source-line-no">074</span><span id="line-74"> public void testNormalStartEnd() throws Exception {</span>
<span class="source-line-no">075</span><span id="line-75"> final long[] numbers = new long[] { NO_NONCE, 1, 2, Long.MAX_VALUE, Long.MIN_VALUE };</span>
<span class="source-line-no">076</span><span id="line-76"> ServerNonceManager nm = createManager();</span>
<span class="source-line-no">077</span><span id="line-77"> for (int i = 0; i &lt; numbers.length; ++i) {</span>
<span class="source-line-no">078</span><span id="line-78"> for (int j = 0; j &lt; numbers.length; ++j) {</span>
<span class="source-line-no">079</span><span id="line-79"> assertTrue(nm.startOperation(numbers[i], numbers[j], createStoppable()));</span>
<span class="source-line-no">080</span><span id="line-80"> }</span>
<span class="source-line-no">081</span><span id="line-81"> }</span>
<span class="source-line-no">082</span><span id="line-82"> // Should be able to start operation the second time w/o nonces.</span>
<span class="source-line-no">083</span><span id="line-83"> for (int i = 0; i &lt; numbers.length; ++i) {</span>
<span class="source-line-no">084</span><span id="line-84"> assertTrue(nm.startOperation(numbers[i], NO_NONCE, createStoppable()));</span>
<span class="source-line-no">085</span><span id="line-85"> }</span>
<span class="source-line-no">086</span><span id="line-86"> // Fail all operations - should be able to restart.</span>
<span class="source-line-no">087</span><span id="line-87"> for (int i = 0; i &lt; numbers.length; ++i) {</span>
<span class="source-line-no">088</span><span id="line-88"> for (int j = 0; j &lt; numbers.length; ++j) {</span>
<span class="source-line-no">089</span><span id="line-89"> nm.endOperation(numbers[i], numbers[j], false);</span>
<span class="source-line-no">090</span><span id="line-90"> assertTrue(nm.startOperation(numbers[i], numbers[j], createStoppable()));</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"> // Succeed all operations - should not be able to restart, except for NO_NONCE.</span>
<span class="source-line-no">094</span><span id="line-94"> for (int i = 0; i &lt; numbers.length; ++i) {</span>
<span class="source-line-no">095</span><span id="line-95"> for (int j = 0; j &lt; numbers.length; ++j) {</span>
<span class="source-line-no">096</span><span id="line-96"> nm.endOperation(numbers[i], numbers[j], true);</span>
<span class="source-line-no">097</span><span id="line-97"> assertEquals(numbers[j] == NO_NONCE,</span>
<span class="source-line-no">098</span><span id="line-98"> nm.startOperation(numbers[i], numbers[j], createStoppable()));</span>
<span class="source-line-no">099</span><span id="line-99"> }</span>
<span class="source-line-no">100</span><span id="line-100"> }</span>
<span class="source-line-no">101</span><span id="line-101"> }</span>
<span class="source-line-no">102</span><span id="line-102"></span>
<span class="source-line-no">103</span><span id="line-103"> @Test</span>
<span class="source-line-no">104</span><span id="line-104"> public void testNoEndWithoutStart() {</span>
<span class="source-line-no">105</span><span id="line-105"> ServerNonceManager nm = createManager();</span>
<span class="source-line-no">106</span><span id="line-106"> try {</span>
<span class="source-line-no">107</span><span id="line-107"> nm.endOperation(NO_NONCE, 1, true);</span>
<span class="source-line-no">108</span><span id="line-108"> throw new Error("Should have thrown");</span>
<span class="source-line-no">109</span><span id="line-109"> } catch (AssertionError err) {</span>
<span class="source-line-no">110</span><span id="line-110"> }</span>
<span class="source-line-no">111</span><span id="line-111"> }</span>
<span class="source-line-no">112</span><span id="line-112"></span>
<span class="source-line-no">113</span><span id="line-113"> @Test</span>
<span class="source-line-no">114</span><span id="line-114"> public void testCleanup() throws Exception {</span>
<span class="source-line-no">115</span><span id="line-115"> ManualEnvironmentEdge edge = new ManualEnvironmentEdge();</span>
<span class="source-line-no">116</span><span id="line-116"> EnvironmentEdgeManager.injectEdge(edge);</span>
<span class="source-line-no">117</span><span id="line-117"> try {</span>
<span class="source-line-no">118</span><span id="line-118"> ServerNonceManager nm = createManager(6);</span>
<span class="source-line-no">119</span><span id="line-119"> ScheduledChore cleanup = nm.createCleanupScheduledChore(Mockito.mock(Stoppable.class));</span>
<span class="source-line-no">120</span><span id="line-120"> edge.setValue(1);</span>
<span class="source-line-no">121</span><span id="line-121"> assertTrue(nm.startOperation(NO_NONCE, 1, createStoppable()));</span>
<span class="source-line-no">122</span><span id="line-122"> assertTrue(nm.startOperation(NO_NONCE, 2, createStoppable()));</span>
<span class="source-line-no">123</span><span id="line-123"> assertTrue(nm.startOperation(NO_NONCE, 3, createStoppable()));</span>
<span class="source-line-no">124</span><span id="line-124"> edge.setValue(2);</span>
<span class="source-line-no">125</span><span id="line-125"> nm.endOperation(NO_NONCE, 1, true);</span>
<span class="source-line-no">126</span><span id="line-126"> edge.setValue(4);</span>
<span class="source-line-no">127</span><span id="line-127"> nm.endOperation(NO_NONCE, 2, true);</span>
<span class="source-line-no">128</span><span id="line-128"> edge.setValue(9);</span>
<span class="source-line-no">129</span><span id="line-129"> cleanup.choreForTesting();</span>
<span class="source-line-no">130</span><span id="line-130"> // Nonce 1 has been cleaned up.</span>
<span class="source-line-no">131</span><span id="line-131"> assertTrue(nm.startOperation(NO_NONCE, 1, createStoppable()));</span>
<span class="source-line-no">132</span><span id="line-132"> // Nonce 2 has not been cleaned up.</span>
<span class="source-line-no">133</span><span id="line-133"> assertFalse(nm.startOperation(NO_NONCE, 2, createStoppable()));</span>
<span class="source-line-no">134</span><span id="line-134"> // Nonce 3 was active and active ops should never be cleaned up; try to end and start.</span>
<span class="source-line-no">135</span><span id="line-135"> nm.endOperation(NO_NONCE, 3, false);</span>
<span class="source-line-no">136</span><span id="line-136"> assertTrue(nm.startOperation(NO_NONCE, 3, createStoppable()));</span>
<span class="source-line-no">137</span><span id="line-137"> edge.setValue(11);</span>
<span class="source-line-no">138</span><span id="line-138"> cleanup.choreForTesting();</span>
<span class="source-line-no">139</span><span id="line-139"> // Now, nonce 2 has been cleaned up.</span>
<span class="source-line-no">140</span><span id="line-140"> assertTrue(nm.startOperation(NO_NONCE, 2, createStoppable()));</span>
<span class="source-line-no">141</span><span id="line-141"> } finally {</span>
<span class="source-line-no">142</span><span id="line-142"> EnvironmentEdgeManager.reset();</span>
<span class="source-line-no">143</span><span id="line-143"> }</span>
<span class="source-line-no">144</span><span id="line-144"> }</span>
<span class="source-line-no">145</span><span id="line-145"></span>
<span class="source-line-no">146</span><span id="line-146"> @Test</span>
<span class="source-line-no">147</span><span id="line-147"> public void testWalNonces() throws Exception {</span>
<span class="source-line-no">148</span><span id="line-148"> ManualEnvironmentEdge edge = new ManualEnvironmentEdge();</span>
<span class="source-line-no">149</span><span id="line-149"> EnvironmentEdgeManager.injectEdge(edge);</span>
<span class="source-line-no">150</span><span id="line-150"> try {</span>
<span class="source-line-no">151</span><span id="line-151"> ServerNonceManager nm = createManager(6);</span>
<span class="source-line-no">152</span><span id="line-152"> ScheduledChore cleanup = nm.createCleanupScheduledChore(Mockito.mock(Stoppable.class));</span>
<span class="source-line-no">153</span><span id="line-153"> // Add nonces from WAL, including dups.</span>
<span class="source-line-no">154</span><span id="line-154"> edge.setValue(12);</span>
<span class="source-line-no">155</span><span id="line-155"> nm.reportOperationFromWal(NO_NONCE, 1, 8);</span>
<span class="source-line-no">156</span><span id="line-156"> nm.reportOperationFromWal(NO_NONCE, 2, 2);</span>
<span class="source-line-no">157</span><span id="line-157"> nm.reportOperationFromWal(NO_NONCE, 3, 5);</span>
<span class="source-line-no">158</span><span id="line-158"> nm.reportOperationFromWal(NO_NONCE, 3, 6);</span>
<span class="source-line-no">159</span><span id="line-159"> // WAL nonces should prevent cross-server conflicts.</span>
<span class="source-line-no">160</span><span id="line-160"> assertFalse(nm.startOperation(NO_NONCE, 1, createStoppable()));</span>
<span class="source-line-no">161</span><span id="line-161"> // Make sure we ignore very old nonces, but not borderline old nonces.</span>
<span class="source-line-no">162</span><span id="line-162"> assertTrue(nm.startOperation(NO_NONCE, 2, createStoppable()));</span>
<span class="source-line-no">163</span><span id="line-163"> assertFalse(nm.startOperation(NO_NONCE, 3, createStoppable()));</span>
<span class="source-line-no">164</span><span id="line-164"> // Make sure grace period is counted from recovery time.</span>
<span class="source-line-no">165</span><span id="line-165"> edge.setValue(17);</span>
<span class="source-line-no">166</span><span id="line-166"> cleanup.choreForTesting();</span>
<span class="source-line-no">167</span><span id="line-167"> assertFalse(nm.startOperation(NO_NONCE, 1, createStoppable()));</span>
<span class="source-line-no">168</span><span id="line-168"> assertFalse(nm.startOperation(NO_NONCE, 3, createStoppable()));</span>
<span class="source-line-no">169</span><span id="line-169"> edge.setValue(19);</span>
<span class="source-line-no">170</span><span id="line-170"> cleanup.choreForTesting();</span>
<span class="source-line-no">171</span><span id="line-171"> assertTrue(nm.startOperation(NO_NONCE, 1, createStoppable()));</span>
<span class="source-line-no">172</span><span id="line-172"> assertTrue(nm.startOperation(NO_NONCE, 3, createStoppable()));</span>
<span class="source-line-no">173</span><span id="line-173"> } finally {</span>
<span class="source-line-no">174</span><span id="line-174"> EnvironmentEdgeManager.reset();</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"></span>
<span class="source-line-no">178</span><span id="line-178"> @Test</span>
<span class="source-line-no">179</span><span id="line-179"> public void testConcurrentAttempts() throws Exception {</span>
<span class="source-line-no">180</span><span id="line-180"> final ServerNonceManager nm = createManager();</span>
<span class="source-line-no">181</span><span id="line-181"></span>
<span class="source-line-no">182</span><span id="line-182"> nm.startOperation(NO_NONCE, 1, createStoppable());</span>
<span class="source-line-no">183</span><span id="line-183"> TestRunnable tr = new TestRunnable(nm, 1, false, createStoppable());</span>
<span class="source-line-no">184</span><span id="line-184"> Thread t = tr.start();</span>
<span class="source-line-no">185</span><span id="line-185"> waitForThreadToBlockOrExit(t);</span>
<span class="source-line-no">186</span><span id="line-186"> nm.endOperation(NO_NONCE, 1, true); // operation succeeded</span>
<span class="source-line-no">187</span><span id="line-187"> t.join(); // thread must now unblock and not proceed (result checked inside).</span>
<span class="source-line-no">188</span><span id="line-188"> tr.propagateError();</span>
<span class="source-line-no">189</span><span id="line-189"></span>
<span class="source-line-no">190</span><span id="line-190"> nm.startOperation(NO_NONCE, 2, createStoppable());</span>
<span class="source-line-no">191</span><span id="line-191"> tr = new TestRunnable(nm, 2, true, createStoppable());</span>
<span class="source-line-no">192</span><span id="line-192"> t = tr.start();</span>
<span class="source-line-no">193</span><span id="line-193"> waitForThreadToBlockOrExit(t);</span>
<span class="source-line-no">194</span><span id="line-194"> nm.endOperation(NO_NONCE, 2, false);</span>
<span class="source-line-no">195</span><span id="line-195"> t.join(); // thread must now unblock and allow us to proceed (result checked inside).</span>
<span class="source-line-no">196</span><span id="line-196"> tr.propagateError();</span>
<span class="source-line-no">197</span><span id="line-197"> nm.endOperation(NO_NONCE, 2, true); // that is to say we should be able to end operation</span>
<span class="source-line-no">198</span><span id="line-198"></span>
<span class="source-line-no">199</span><span id="line-199"> nm.startOperation(NO_NONCE, 3, createStoppable());</span>
<span class="source-line-no">200</span><span id="line-200"> tr = new TestRunnable(nm, 4, true, createStoppable());</span>
<span class="source-line-no">201</span><span id="line-201"> tr.start().join(); // nonce 3 must have no bearing on nonce 4</span>
<span class="source-line-no">202</span><span id="line-202"> tr.propagateError();</span>
<span class="source-line-no">203</span><span id="line-203"> }</span>
<span class="source-line-no">204</span><span id="line-204"></span>
<span class="source-line-no">205</span><span id="line-205"> @Test</span>
<span class="source-line-no">206</span><span id="line-206"> public void testStopWaiting() throws Exception {</span>
<span class="source-line-no">207</span><span id="line-207"> final ServerNonceManager nm = createManager();</span>
<span class="source-line-no">208</span><span id="line-208"> nm.setConflictWaitIterationMs(1);</span>
<span class="source-line-no">209</span><span id="line-209"> Stoppable stoppingStoppable = createStoppable();</span>
<span class="source-line-no">210</span><span id="line-210"> Mockito.when(stoppingStoppable.isStopped()).thenAnswer(new Answer&lt;Boolean&gt;() {</span>
<span class="source-line-no">211</span><span id="line-211"> AtomicInteger answer = new AtomicInteger(3);</span>
<span class="source-line-no">212</span><span id="line-212"></span>
<span class="source-line-no">213</span><span id="line-213"> @Override</span>
<span class="source-line-no">214</span><span id="line-214"> public Boolean answer(InvocationOnMock invocation) throws Throwable {</span>
<span class="source-line-no">215</span><span id="line-215"> return 0 &lt; answer.decrementAndGet();</span>
<span class="source-line-no">216</span><span id="line-216"> }</span>
<span class="source-line-no">217</span><span id="line-217"> });</span>
<span class="source-line-no">218</span><span id="line-218"></span>
<span class="source-line-no">219</span><span id="line-219"> nm.startOperation(NO_NONCE, 1, createStoppable());</span>
<span class="source-line-no">220</span><span id="line-220"> TestRunnable tr = new TestRunnable(nm, 1, null, stoppingStoppable);</span>
<span class="source-line-no">221</span><span id="line-221"> Thread t = tr.start();</span>
<span class="source-line-no">222</span><span id="line-222"> waitForThreadToBlockOrExit(t);</span>
<span class="source-line-no">223</span><span id="line-223"> // thread must eventually throw</span>
<span class="source-line-no">224</span><span id="line-224"> t.join();</span>
<span class="source-line-no">225</span><span id="line-225"> tr.propagateError();</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"> private void waitForThreadToBlockOrExit(Thread t) throws InterruptedException {</span>
<span class="source-line-no">229</span><span id="line-229"> for (int i = 9; i &gt;= 0; --i) {</span>
<span class="source-line-no">230</span><span id="line-230"> if (</span>
<span class="source-line-no">231</span><span id="line-231"> t.getState() == Thread.State.TIMED_WAITING || t.getState() == Thread.State.WAITING</span>
<span class="source-line-no">232</span><span id="line-232"> || t.getState() == Thread.State.BLOCKED || t.getState() == Thread.State.TERMINATED</span>
<span class="source-line-no">233</span><span id="line-233"> ) {</span>
<span class="source-line-no">234</span><span id="line-234"> return;</span>
<span class="source-line-no">235</span><span id="line-235"> }</span>
<span class="source-line-no">236</span><span id="line-236"> if (i &gt; 0) Thread.sleep(300);</span>
<span class="source-line-no">237</span><span id="line-237"> }</span>
<span class="source-line-no">238</span><span id="line-238"> // Thread didn't block in 3 seconds. What is it doing? Continue the test, we'd rather</span>
<span class="source-line-no">239</span><span id="line-239"> // have a very strange false positive then false negative due to timing.</span>
<span class="source-line-no">240</span><span id="line-240"> }</span>
<span class="source-line-no">241</span><span id="line-241"></span>
<span class="source-line-no">242</span><span id="line-242"> private static class TestRunnable implements Runnable {</span>
<span class="source-line-no">243</span><span id="line-243"> public final CountDownLatch startedLatch = new CountDownLatch(1); // It's the final countdown!</span>
<span class="source-line-no">244</span><span id="line-244"></span>
<span class="source-line-no">245</span><span id="line-245"> private final ServerNonceManager nm;</span>
<span class="source-line-no">246</span><span id="line-246"> private final long nonce;</span>
<span class="source-line-no">247</span><span id="line-247"> private final Boolean expected;</span>
<span class="source-line-no">248</span><span id="line-248"> private final Stoppable stoppable;</span>
<span class="source-line-no">249</span><span id="line-249"></span>
<span class="source-line-no">250</span><span id="line-250"> private Throwable throwable = null;</span>
<span class="source-line-no">251</span><span id="line-251"></span>
<span class="source-line-no">252</span><span id="line-252"> public TestRunnable(ServerNonceManager nm, long nonce, Boolean expected, Stoppable stoppable) {</span>
<span class="source-line-no">253</span><span id="line-253"> this.nm = nm;</span>
<span class="source-line-no">254</span><span id="line-254"> this.nonce = nonce;</span>
<span class="source-line-no">255</span><span id="line-255"> this.expected = expected;</span>
<span class="source-line-no">256</span><span id="line-256"> this.stoppable = stoppable;</span>
<span class="source-line-no">257</span><span id="line-257"> }</span>
<span class="source-line-no">258</span><span id="line-258"></span>
<span class="source-line-no">259</span><span id="line-259"> public void propagateError() throws Exception {</span>
<span class="source-line-no">260</span><span id="line-260"> if (throwable == null) return;</span>
<span class="source-line-no">261</span><span id="line-261"> throw new Exception(throwable);</span>
<span class="source-line-no">262</span><span id="line-262"> }</span>
<span class="source-line-no">263</span><span id="line-263"></span>
<span class="source-line-no">264</span><span id="line-264"> public Thread start() {</span>
<span class="source-line-no">265</span><span id="line-265"> Thread t = new Thread(this);</span>
<span class="source-line-no">266</span><span id="line-266"> t = Threads.setDaemonThreadRunning(t);</span>
<span class="source-line-no">267</span><span id="line-267"> try {</span>
<span class="source-line-no">268</span><span id="line-268"> startedLatch.await();</span>
<span class="source-line-no">269</span><span id="line-269"> } catch (InterruptedException e) {</span>
<span class="source-line-no">270</span><span id="line-270"> fail("Unexpected");</span>
<span class="source-line-no">271</span><span id="line-271"> }</span>
<span class="source-line-no">272</span><span id="line-272"> return t;</span>
<span class="source-line-no">273</span><span id="line-273"> }</span>
<span class="source-line-no">274</span><span id="line-274"></span>
<span class="source-line-no">275</span><span id="line-275"> @Override</span>
<span class="source-line-no">276</span><span id="line-276"> public void run() {</span>
<span class="source-line-no">277</span><span id="line-277"> startedLatch.countDown();</span>
<span class="source-line-no">278</span><span id="line-278"> boolean shouldThrow = expected == null;</span>
<span class="source-line-no">279</span><span id="line-279"> boolean hasThrown = true;</span>
<span class="source-line-no">280</span><span id="line-280"> try {</span>
<span class="source-line-no">281</span><span id="line-281"> boolean result = nm.startOperation(NO_NONCE, nonce, stoppable);</span>
<span class="source-line-no">282</span><span id="line-282"> hasThrown = false;</span>
<span class="source-line-no">283</span><span id="line-283"> if (!shouldThrow) {</span>
<span class="source-line-no">284</span><span id="line-284"> assertEquals(expected.booleanValue(), result);</span>
<span class="source-line-no">285</span><span id="line-285"> }</span>
<span class="source-line-no">286</span><span id="line-286"> } catch (Throwable t) {</span>
<span class="source-line-no">287</span><span id="line-287"> if (!shouldThrow) {</span>
<span class="source-line-no">288</span><span id="line-288"> throwable = t;</span>
<span class="source-line-no">289</span><span id="line-289"> }</span>
<span class="source-line-no">290</span><span id="line-290"> }</span>
<span class="source-line-no">291</span><span id="line-291"> if (shouldThrow &amp;&amp; !hasThrown) {</span>
<span class="source-line-no">292</span><span id="line-292"> throwable = new AssertionError("Should have thrown");</span>
<span class="source-line-no">293</span><span id="line-293"> }</span>
<span class="source-line-no">294</span><span id="line-294"> }</span>
<span class="source-line-no">295</span><span id="line-295"> }</span>
<span class="source-line-no">296</span><span id="line-296"></span>
<span class="source-line-no">297</span><span id="line-297"> private Stoppable createStoppable() {</span>
<span class="source-line-no">298</span><span id="line-298"> Stoppable s = Mockito.mock(Stoppable.class);</span>
<span class="source-line-no">299</span><span id="line-299"> Mockito.when(s.isStopped()).thenReturn(false);</span>
<span class="source-line-no">300</span><span id="line-300"> return s;</span>
<span class="source-line-no">301</span><span id="line-301"> }</span>
<span class="source-line-no">302</span><span id="line-302"></span>
<span class="source-line-no">303</span><span id="line-303"> private ServerNonceManager createManager() {</span>
<span class="source-line-no">304</span><span id="line-304"> return createManager(null);</span>
<span class="source-line-no">305</span><span id="line-305"> }</span>
<span class="source-line-no">306</span><span id="line-306"></span>
<span class="source-line-no">307</span><span id="line-307"> private ServerNonceManager createManager(Integer gracePeriod) {</span>
<span class="source-line-no">308</span><span id="line-308"> Configuration conf = HBaseConfiguration.create();</span>
<span class="source-line-no">309</span><span id="line-309"> if (gracePeriod != null) {</span>
<span class="source-line-no">310</span><span id="line-310"> conf.setInt(ServerNonceManager.HASH_NONCE_GRACE_PERIOD_KEY, gracePeriod.intValue());</span>
<span class="source-line-no">311</span><span id="line-311"> }</span>
<span class="source-line-no">312</span><span id="line-312"> return new ServerNonceManager(conf);</span>
<span class="source-line-no">313</span><span id="line-313"> }</span>
<span class="source-line-no">314</span><span id="line-314">}</span>
</pre>
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