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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.procedure2;</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.lang.Thread.UncaughtExceptionHandler;</span>
<span class="source-line-no">021</span><span id="line-21">import java.util.Set;</span>
<span class="source-line-no">022</span><span id="line-22">import java.util.concurrent.TimeUnit;</span>
<span class="source-line-no">023</span><span id="line-23">import org.apache.hadoop.hbase.HBaseClassTestRule;</span>
<span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.HBaseCommonTestingUtil;</span>
<span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.testclassification.MasterTests;</span>
<span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.testclassification.SmallTests;</span>
<span class="source-line-no">027</span><span id="line-27">import org.junit.After;</span>
<span class="source-line-no">028</span><span id="line-28">import org.junit.Before;</span>
<span class="source-line-no">029</span><span id="line-29">import org.junit.ClassRule;</span>
<span class="source-line-no">030</span><span id="line-30">import org.junit.Rule;</span>
<span class="source-line-no">031</span><span id="line-31">import org.junit.Test;</span>
<span class="source-line-no">032</span><span id="line-32">import org.junit.experimental.categories.Category;</span>
<span class="source-line-no">033</span><span id="line-33">import org.junit.rules.ExpectedException;</span>
<span class="source-line-no">034</span><span id="line-34"></span>
<span class="source-line-no">035</span><span id="line-35">/**</span>
<span class="source-line-no">036</span><span id="line-36"> * Make sure the {@link UncaughtExceptionHandler} will be called when there are unchecked exceptions</span>
<span class="source-line-no">037</span><span id="line-37"> * thrown in the task.</span>
<span class="source-line-no">038</span><span id="line-38"> * &lt;p/&gt;</span>
<span class="source-line-no">039</span><span id="line-39"> * See HBASE-21875 and HBASE-21890 for more details.</span>
<span class="source-line-no">040</span><span id="line-40"> */</span>
<span class="source-line-no">041</span><span id="line-41">@Category({ MasterTests.class, SmallTests.class })</span>
<span class="source-line-no">042</span><span id="line-42">public class TestRemoteProcedureDispatcherUncaughtExceptionHandler {</span>
<span class="source-line-no">043</span><span id="line-43"></span>
<span class="source-line-no">044</span><span id="line-44"> private static HBaseCommonTestingUtil UTIL = new HBaseCommonTestingUtil();</span>
<span class="source-line-no">045</span><span id="line-45"></span>
<span class="source-line-no">046</span><span id="line-46"> @ClassRule</span>
<span class="source-line-no">047</span><span id="line-47"> public static final HBaseClassTestRule CLASS_RULE =</span>
<span class="source-line-no">048</span><span id="line-48"> HBaseClassTestRule.forClass(TestRemoteProcedureDispatcherUncaughtExceptionHandler.class);</span>
<span class="source-line-no">049</span><span id="line-49"></span>
<span class="source-line-no">050</span><span id="line-50"> private static final class ExceptionHandler implements UncaughtExceptionHandler {</span>
<span class="source-line-no">051</span><span id="line-51"></span>
<span class="source-line-no">052</span><span id="line-52"> private Throwable error;</span>
<span class="source-line-no">053</span><span id="line-53"></span>
<span class="source-line-no">054</span><span id="line-54"> @Override</span>
<span class="source-line-no">055</span><span id="line-55"> public synchronized void uncaughtException(Thread t, Throwable e) {</span>
<span class="source-line-no">056</span><span id="line-56"> this.error = e;</span>
<span class="source-line-no">057</span><span id="line-57"> notifyAll();</span>
<span class="source-line-no">058</span><span id="line-58"> }</span>
<span class="source-line-no">059</span><span id="line-59"></span>
<span class="source-line-no">060</span><span id="line-60"> public synchronized void get() throws Throwable {</span>
<span class="source-line-no">061</span><span id="line-61"> while (error == null) {</span>
<span class="source-line-no">062</span><span id="line-62"> wait();</span>
<span class="source-line-no">063</span><span id="line-63"> }</span>
<span class="source-line-no">064</span><span id="line-64"> throw error;</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"> private static final class Dispatcher extends RemoteProcedureDispatcher&lt;Void, Integer&gt; {</span>
<span class="source-line-no">069</span><span id="line-69"></span>
<span class="source-line-no">070</span><span id="line-70"> private final UncaughtExceptionHandler handler;</span>
<span class="source-line-no">071</span><span id="line-71"></span>
<span class="source-line-no">072</span><span id="line-72"> public Dispatcher(UncaughtExceptionHandler handler) {</span>
<span class="source-line-no">073</span><span id="line-73"> super(UTIL.getConfiguration());</span>
<span class="source-line-no">074</span><span id="line-74"> this.handler = handler;</span>
<span class="source-line-no">075</span><span id="line-75"> }</span>
<span class="source-line-no">076</span><span id="line-76"></span>
<span class="source-line-no">077</span><span id="line-77"> @Override</span>
<span class="source-line-no">078</span><span id="line-78"> protected UncaughtExceptionHandler getUncaughtExceptionHandler() {</span>
<span class="source-line-no">079</span><span id="line-79"> return handler;</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"> @Override</span>
<span class="source-line-no">083</span><span id="line-83"> protected void remoteDispatch(Integer key, Set&lt;RemoteProcedure&gt; operations) {</span>
<span class="source-line-no">084</span><span id="line-84"> }</span>
<span class="source-line-no">085</span><span id="line-85"></span>
<span class="source-line-no">086</span><span id="line-86"> @Override</span>
<span class="source-line-no">087</span><span id="line-87"> protected void abortPendingOperations(Integer key, Set&lt;RemoteProcedure&gt; operations) {</span>
<span class="source-line-no">088</span><span id="line-88"> }</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"> @Rule</span>
<span class="source-line-no">092</span><span id="line-92"> public ExpectedException thrown = ExpectedException.none();</span>
<span class="source-line-no">093</span><span id="line-93"></span>
<span class="source-line-no">094</span><span id="line-94"> private ExceptionHandler handler;</span>
<span class="source-line-no">095</span><span id="line-95"></span>
<span class="source-line-no">096</span><span id="line-96"> private Dispatcher dispatcher;</span>
<span class="source-line-no">097</span><span id="line-97"></span>
<span class="source-line-no">098</span><span id="line-98"> @Before</span>
<span class="source-line-no">099</span><span id="line-99"> public void setUp() {</span>
<span class="source-line-no">100</span><span id="line-100"> handler = new ExceptionHandler();</span>
<span class="source-line-no">101</span><span id="line-101"> dispatcher = new Dispatcher(handler);</span>
<span class="source-line-no">102</span><span id="line-102"> dispatcher.start();</span>
<span class="source-line-no">103</span><span id="line-103"> }</span>
<span class="source-line-no">104</span><span id="line-104"></span>
<span class="source-line-no">105</span><span id="line-105"> @After</span>
<span class="source-line-no">106</span><span id="line-106"> public void tearDown() {</span>
<span class="source-line-no">107</span><span id="line-107"> dispatcher.stop();</span>
<span class="source-line-no">108</span><span id="line-108"> dispatcher = null;</span>
<span class="source-line-no">109</span><span id="line-109"> handler = null;</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"> @Test</span>
<span class="source-line-no">113</span><span id="line-113"> public void testSubmit() throws Throwable {</span>
<span class="source-line-no">114</span><span id="line-114"> String message = "inject error";</span>
<span class="source-line-no">115</span><span id="line-115"> thrown.expect(RuntimeException.class);</span>
<span class="source-line-no">116</span><span id="line-116"> thrown.expectMessage(message);</span>
<span class="source-line-no">117</span><span id="line-117"> dispatcher.submitTask(new Runnable() {</span>
<span class="source-line-no">118</span><span id="line-118"></span>
<span class="source-line-no">119</span><span id="line-119"> @Override</span>
<span class="source-line-no">120</span><span id="line-120"> public void run() {</span>
<span class="source-line-no">121</span><span id="line-121"> throw new RuntimeException(message);</span>
<span class="source-line-no">122</span><span id="line-122"> }</span>
<span class="source-line-no">123</span><span id="line-123"> });</span>
<span class="source-line-no">124</span><span id="line-124"> handler.get();</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"> @Test</span>
<span class="source-line-no">128</span><span id="line-128"> public void testDelayedSubmit() throws Throwable {</span>
<span class="source-line-no">129</span><span id="line-129"> String message = "inject error";</span>
<span class="source-line-no">130</span><span id="line-130"> thrown.expect(RuntimeException.class);</span>
<span class="source-line-no">131</span><span id="line-131"> thrown.expectMessage(message);</span>
<span class="source-line-no">132</span><span id="line-132"> dispatcher.submitTask(new Runnable() {</span>
<span class="source-line-no">133</span><span id="line-133"></span>
<span class="source-line-no">134</span><span id="line-134"> @Override</span>
<span class="source-line-no">135</span><span id="line-135"> public void run() {</span>
<span class="source-line-no">136</span><span id="line-136"> throw new RuntimeException(message);</span>
<span class="source-line-no">137</span><span id="line-137"> }</span>
<span class="source-line-no">138</span><span id="line-138"> }, 100, TimeUnit.MILLISECONDS);</span>
<span class="source-line-no">139</span><span id="line-139"> handler.get();</span>
<span class="source-line-no">140</span><span id="line-140"> }</span>
<span class="source-line-no">141</span><span id="line-141">}</span>
</pre>
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