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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;</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 java.io.IOException;</span> |
| <span class="source-line-no">021</span><span id="line-21">import java.util.HashSet;</span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.List;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.Set;</span> |
| <span class="source-line-no">024</span><span id="line-24">import java.util.concurrent.ExecutionException;</span> |
| <span class="source-line-no">025</span><span id="line-25">import java.util.concurrent.Future;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.conf.Configuration;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.slf4j.Logger;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.slf4j.LoggerFactory;</span> |
| <span class="source-line-no">030</span><span id="line-30"></span> |
| <span class="source-line-no">031</span><span id="line-31">public abstract class MultithreadedTestUtil {</span> |
| <span class="source-line-no">032</span><span id="line-32"></span> |
| <span class="source-line-no">033</span><span id="line-33"> private static final Logger LOG = LoggerFactory.getLogger(MultithreadedTestUtil.class);</span> |
| <span class="source-line-no">034</span><span id="line-34"></span> |
| <span class="source-line-no">035</span><span id="line-35"> public static class TestContext {</span> |
| <span class="source-line-no">036</span><span id="line-36"> private final Configuration conf;</span> |
| <span class="source-line-no">037</span><span id="line-37"> private Throwable err = null;</span> |
| <span class="source-line-no">038</span><span id="line-38"> private boolean stopped = false;</span> |
| <span class="source-line-no">039</span><span id="line-39"> private int threadDoneCount = 0;</span> |
| <span class="source-line-no">040</span><span id="line-40"> private Set<TestThread> testThreads = new HashSet<>();</span> |
| <span class="source-line-no">041</span><span id="line-41"></span> |
| <span class="source-line-no">042</span><span id="line-42"> public TestContext(Configuration configuration) {</span> |
| <span class="source-line-no">043</span><span id="line-43"> this.conf = configuration;</span> |
| <span class="source-line-no">044</span><span id="line-44"> }</span> |
| <span class="source-line-no">045</span><span id="line-45"></span> |
| <span class="source-line-no">046</span><span id="line-46"> protected Configuration getConf() {</span> |
| <span class="source-line-no">047</span><span id="line-47"> return conf;</span> |
| <span class="source-line-no">048</span><span id="line-48"> }</span> |
| <span class="source-line-no">049</span><span id="line-49"></span> |
| <span class="source-line-no">050</span><span id="line-50"> public synchronized boolean shouldRun() {</span> |
| <span class="source-line-no">051</span><span id="line-51"> return !stopped && err == null;</span> |
| <span class="source-line-no">052</span><span id="line-52"> }</span> |
| <span class="source-line-no">053</span><span id="line-53"></span> |
| <span class="source-line-no">054</span><span id="line-54"> public void addThread(TestThread t) {</span> |
| <span class="source-line-no">055</span><span id="line-55"> testThreads.add(t);</span> |
| <span class="source-line-no">056</span><span id="line-56"> }</span> |
| <span class="source-line-no">057</span><span id="line-57"></span> |
| <span class="source-line-no">058</span><span id="line-58"> public void startThreads() {</span> |
| <span class="source-line-no">059</span><span id="line-59"> for (TestThread t : testThreads) {</span> |
| <span class="source-line-no">060</span><span id="line-60"> t.start();</span> |
| <span class="source-line-no">061</span><span id="line-61"> }</span> |
| <span class="source-line-no">062</span><span id="line-62"> }</span> |
| <span class="source-line-no">063</span><span id="line-63"></span> |
| <span class="source-line-no">064</span><span id="line-64"> public void waitFor(long millis) throws Exception {</span> |
| <span class="source-line-no">065</span><span id="line-65"> long endTime = EnvironmentEdgeManager.currentTime() + millis;</span> |
| <span class="source-line-no">066</span><span id="line-66"> while (!stopped) {</span> |
| <span class="source-line-no">067</span><span id="line-67"> long left = endTime - EnvironmentEdgeManager.currentTime();</span> |
| <span class="source-line-no">068</span><span id="line-68"> if (left <= 0) break;</span> |
| <span class="source-line-no">069</span><span id="line-69"> synchronized (this) {</span> |
| <span class="source-line-no">070</span><span id="line-70"> checkException();</span> |
| <span class="source-line-no">071</span><span id="line-71"> wait(left);</span> |
| <span class="source-line-no">072</span><span id="line-72"> }</span> |
| <span class="source-line-no">073</span><span id="line-73"> }</span> |
| <span class="source-line-no">074</span><span id="line-74"> }</span> |
| <span class="source-line-no">075</span><span id="line-75"></span> |
| <span class="source-line-no">076</span><span id="line-76"> private synchronized void checkException() throws Exception {</span> |
| <span class="source-line-no">077</span><span id="line-77"> if (err != null) {</span> |
| <span class="source-line-no">078</span><span id="line-78"> throw new RuntimeException("Deferred", err);</span> |
| <span class="source-line-no">079</span><span id="line-79"> }</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"> public synchronized void threadFailed(Throwable t) {</span> |
| <span class="source-line-no">083</span><span id="line-83"> if (err == null) err = t;</span> |
| <span class="source-line-no">084</span><span id="line-84"> LOG.error("Failed!", err);</span> |
| <span class="source-line-no">085</span><span id="line-85"> notify();</span> |
| <span class="source-line-no">086</span><span id="line-86"> }</span> |
| <span class="source-line-no">087</span><span id="line-87"></span> |
| <span class="source-line-no">088</span><span id="line-88"> public synchronized void threadDone() {</span> |
| <span class="source-line-no">089</span><span id="line-89"> threadDoneCount++;</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"> public void setStopFlag(boolean s) throws Exception {</span> |
| <span class="source-line-no">093</span><span id="line-93"> synchronized (this) {</span> |
| <span class="source-line-no">094</span><span id="line-94"> stopped = s;</span> |
| <span class="source-line-no">095</span><span id="line-95"> }</span> |
| <span class="source-line-no">096</span><span id="line-96"> }</span> |
| <span class="source-line-no">097</span><span id="line-97"></span> |
| <span class="source-line-no">098</span><span id="line-98"> public void stop() throws Exception {</span> |
| <span class="source-line-no">099</span><span id="line-99"> synchronized (this) {</span> |
| <span class="source-line-no">100</span><span id="line-100"> stopped = true;</span> |
| <span class="source-line-no">101</span><span id="line-101"> }</span> |
| <span class="source-line-no">102</span><span id="line-102"> for (TestThread t : testThreads) {</span> |
| <span class="source-line-no">103</span><span id="line-103"> t.join();</span> |
| <span class="source-line-no">104</span><span id="line-104"> }</span> |
| <span class="source-line-no">105</span><span id="line-105"> checkException();</span> |
| <span class="source-line-no">106</span><span id="line-106"> }</span> |
| <span class="source-line-no">107</span><span id="line-107"> }</span> |
| <span class="source-line-no">108</span><span id="line-108"></span> |
| <span class="source-line-no">109</span><span id="line-109"> /**</span> |
| <span class="source-line-no">110</span><span id="line-110"> * A thread that can be added to a test context, and properly passes exceptions through.</span> |
| <span class="source-line-no">111</span><span id="line-111"> */</span> |
| <span class="source-line-no">112</span><span id="line-112"> public static abstract class TestThread extends Thread {</span> |
| <span class="source-line-no">113</span><span id="line-113"> protected final TestContext ctx;</span> |
| <span class="source-line-no">114</span><span id="line-114"> protected boolean stopped;</span> |
| <span class="source-line-no">115</span><span id="line-115"></span> |
| <span class="source-line-no">116</span><span id="line-116"> public TestThread(TestContext ctx) {</span> |
| <span class="source-line-no">117</span><span id="line-117"> this.ctx = ctx;</span> |
| <span class="source-line-no">118</span><span id="line-118"> }</span> |
| <span class="source-line-no">119</span><span id="line-119"></span> |
| <span class="source-line-no">120</span><span id="line-120"> @Override</span> |
| <span class="source-line-no">121</span><span id="line-121"> public void run() {</span> |
| <span class="source-line-no">122</span><span id="line-122"> try {</span> |
| <span class="source-line-no">123</span><span id="line-123"> doWork();</span> |
| <span class="source-line-no">124</span><span id="line-124"> } catch (Throwable t) {</span> |
| <span class="source-line-no">125</span><span id="line-125"> ctx.threadFailed(t);</span> |
| <span class="source-line-no">126</span><span id="line-126"> }</span> |
| <span class="source-line-no">127</span><span id="line-127"> ctx.threadDone();</span> |
| <span class="source-line-no">128</span><span id="line-128"> }</span> |
| <span class="source-line-no">129</span><span id="line-129"></span> |
| <span class="source-line-no">130</span><span id="line-130"> public abstract void doWork() throws Exception;</span> |
| <span class="source-line-no">131</span><span id="line-131"></span> |
| <span class="source-line-no">132</span><span id="line-132"> protected void stopTestThread() {</span> |
| <span class="source-line-no">133</span><span id="line-133"> this.stopped = true;</span> |
| <span class="source-line-no">134</span><span id="line-134"> }</span> |
| <span class="source-line-no">135</span><span id="line-135"> }</span> |
| <span class="source-line-no">136</span><span id="line-136"></span> |
| <span class="source-line-no">137</span><span id="line-137"> /**</span> |
| <span class="source-line-no">138</span><span id="line-138"> * A test thread that performs a repeating operation.</span> |
| <span class="source-line-no">139</span><span id="line-139"> */</span> |
| <span class="source-line-no">140</span><span id="line-140"> public static abstract class RepeatingTestThread extends TestThread {</span> |
| <span class="source-line-no">141</span><span id="line-141"> public RepeatingTestThread(TestContext ctx) {</span> |
| <span class="source-line-no">142</span><span id="line-142"> super(ctx);</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"> @Override</span> |
| <span class="source-line-no">146</span><span id="line-146"> public final void doWork() throws Exception {</span> |
| <span class="source-line-no">147</span><span id="line-147"> try {</span> |
| <span class="source-line-no">148</span><span id="line-148"> while (ctx.shouldRun() && !stopped) {</span> |
| <span class="source-line-no">149</span><span id="line-149"> doAnAction();</span> |
| <span class="source-line-no">150</span><span id="line-150"> }</span> |
| <span class="source-line-no">151</span><span id="line-151"> } finally {</span> |
| <span class="source-line-no">152</span><span id="line-152"> workDone();</span> |
| <span class="source-line-no">153</span><span id="line-153"> }</span> |
| <span class="source-line-no">154</span><span id="line-154"> }</span> |
| <span class="source-line-no">155</span><span id="line-155"></span> |
| <span class="source-line-no">156</span><span id="line-156"> public abstract void doAnAction() throws Exception;</span> |
| <span class="source-line-no">157</span><span id="line-157"></span> |
| <span class="source-line-no">158</span><span id="line-158"> public void workDone() throws IOException {</span> |
| <span class="source-line-no">159</span><span id="line-159"> }</span> |
| <span class="source-line-no">160</span><span id="line-160"> }</span> |
| <span class="source-line-no">161</span><span id="line-161"></span> |
| <span class="source-line-no">162</span><span id="line-162"> /**</span> |
| <span class="source-line-no">163</span><span id="line-163"> * Verify that no assertions have failed inside a future. Used for unit tests that spawn threads.</span> |
| <span class="source-line-no">164</span><span id="line-164"> * E.g.,</span> |
| <span class="source-line-no">165</span><span id="line-165"> * <p></span> |
| <span class="source-line-no">166</span><span id="line-166"> *</span> |
| <span class="source-line-no">167</span><span id="line-167"> * <pre></span> |
| <span class="source-line-no">168</span><span id="line-168"> * List&lt;Future&lt;Void>> results = Lists.newArrayList();</span> |
| <span class="source-line-no">169</span><span id="line-169"> * Future&lt;Void> f = executor.submit(new Callable&lt;Void> {</span> |
| <span class="source-line-no">170</span><span id="line-170"> * public Void call() {</span> |
| <span class="source-line-no">171</span><span id="line-171"> * assertTrue(someMethod());</span> |
| <span class="source-line-no">172</span><span id="line-172"> * }</span> |
| <span class="source-line-no">173</span><span id="line-173"> * });</span> |
| <span class="source-line-no">174</span><span id="line-174"> * results.add(f);</span> |
| <span class="source-line-no">175</span><span id="line-175"> * assertOnFutures(results);</span> |
| <span class="source-line-no">176</span><span id="line-176"> * </pre></span> |
| <span class="source-line-no">177</span><span id="line-177"> *</span> |
| <span class="source-line-no">178</span><span id="line-178"> * @param threadResults A list of futures</span> |
| <span class="source-line-no">179</span><span id="line-179"> * @throws InterruptedException If interrupted when waiting for a result from one of the futures</span> |
| <span class="source-line-no">180</span><span id="line-180"> * @throws ExecutionException If an exception other than AssertionError occurs inside any of the</span> |
| <span class="source-line-no">181</span><span id="line-181"> * futures</span> |
| <span class="source-line-no">182</span><span id="line-182"> */</span> |
| <span class="source-line-no">183</span><span id="line-183"> public static void assertOnFutures(List<Future<?>> threadResults)</span> |
| <span class="source-line-no">184</span><span id="line-184"> throws InterruptedException, ExecutionException {</span> |
| <span class="source-line-no">185</span><span id="line-185"> for (Future<?> threadResult : threadResults) {</span> |
| <span class="source-line-no">186</span><span id="line-186"> try {</span> |
| <span class="source-line-no">187</span><span id="line-187"> threadResult.get();</span> |
| <span class="source-line-no">188</span><span id="line-188"> } catch (ExecutionException e) {</span> |
| <span class="source-line-no">189</span><span id="line-189"> if (e.getCause() instanceof AssertionError) {</span> |
| <span class="source-line-no">190</span><span id="line-190"> throw (AssertionError) e.getCause();</span> |
| <span class="source-line-no">191</span><span id="line-191"> }</span> |
| <span class="source-line-no">192</span><span id="line-192"> throw e;</span> |
| <span class="source-line-no">193</span><span id="line-193"> }</span> |
| <span class="source-line-no">194</span><span id="line-194"> }</span> |
| <span class="source-line-no">195</span><span id="line-195"> }</span> |
| <span class="source-line-no">196</span><span id="line-196">}</span> |
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| </div> |
| </main> |
| </body> |
| </html> |
