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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 static org.junit.Assert.assertFalse;</span>
<span class="source-line-no">021</span><span id="line-21">import static org.junit.Assert.assertTrue;</span>
<span class="source-line-no">022</span><span id="line-22"></span>
<span class="source-line-no">023</span><span id="line-23">import java.util.concurrent.atomic.AtomicBoolean;</span>
<span class="source-line-no">024</span><span id="line-24">import java.util.stream.Collectors;</span>
<span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.fs.FileSystem;</span>
<span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.fs.Path;</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.HBaseCommonTestingUtil;</span>
<span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.hbase.procedure2.store.ProcedureStore;</span>
<span class="source-line-no">030</span><span id="line-30">import org.apache.hadoop.hbase.testclassification.MasterTests;</span>
<span class="source-line-no">031</span><span id="line-31">import org.apache.hadoop.hbase.testclassification.SmallTests;</span>
<span class="source-line-no">032</span><span id="line-32">import org.junit.AfterClass;</span>
<span class="source-line-no">033</span><span id="line-33">import org.junit.BeforeClass;</span>
<span class="source-line-no">034</span><span id="line-34">import org.junit.ClassRule;</span>
<span class="source-line-no">035</span><span id="line-35">import org.junit.Test;</span>
<span class="source-line-no">036</span><span id="line-36">import org.junit.experimental.categories.Category;</span>
<span class="source-line-no">037</span><span id="line-37">import org.slf4j.Logger;</span>
<span class="source-line-no">038</span><span id="line-38">import org.slf4j.LoggerFactory;</span>
<span class="source-line-no">039</span><span id="line-39"></span>
<span class="source-line-no">040</span><span id="line-40">import org.apache.hadoop.hbase.shaded.protobuf.generated.ProcedureProtos;</span>
<span class="source-line-no">041</span><span id="line-41"></span>
<span class="source-line-no">042</span><span id="line-42">@Category({ MasterTests.class, SmallTests.class })</span>
<span class="source-line-no">043</span><span id="line-43">public class TestProcedureBypass {</span>
<span class="source-line-no">044</span><span id="line-44"></span>
<span class="source-line-no">045</span><span id="line-45"> @ClassRule</span>
<span class="source-line-no">046</span><span id="line-46"> public static final HBaseClassTestRule CLASS_RULE =</span>
<span class="source-line-no">047</span><span id="line-47"> HBaseClassTestRule.forClass(TestProcedureBypass.class);</span>
<span class="source-line-no">048</span><span id="line-48"></span>
<span class="source-line-no">049</span><span id="line-49"> private static final Logger LOG = LoggerFactory.getLogger(TestProcedureBypass.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 int PROCEDURE_EXECUTOR_SLOTS = 1;</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 static TestProcEnv procEnv;</span>
<span class="source-line-no">054</span><span id="line-54"> private static ProcedureStore procStore;</span>
<span class="source-line-no">055</span><span id="line-55"></span>
<span class="source-line-no">056</span><span id="line-56"> private static ProcedureExecutor&lt;TestProcEnv&gt; procExecutor;</span>
<span class="source-line-no">057</span><span id="line-57"></span>
<span class="source-line-no">058</span><span id="line-58"> private static HBaseCommonTestingUtil htu;</span>
<span class="source-line-no">059</span><span id="line-59"></span>
<span class="source-line-no">060</span><span id="line-60"> private static FileSystem fs;</span>
<span class="source-line-no">061</span><span id="line-61"> private static Path testDir;</span>
<span class="source-line-no">062</span><span id="line-62"> private static Path logDir;</span>
<span class="source-line-no">063</span><span id="line-63"></span>
<span class="source-line-no">064</span><span id="line-64"> private static class TestProcEnv {</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"> @BeforeClass</span>
<span class="source-line-no">068</span><span id="line-68"> public static void setUp() throws Exception {</span>
<span class="source-line-no">069</span><span id="line-69"> htu = new HBaseCommonTestingUtil();</span>
<span class="source-line-no">070</span><span id="line-70"></span>
<span class="source-line-no">071</span><span id="line-71"> // NOTE: The executor will be created by each test</span>
<span class="source-line-no">072</span><span id="line-72"> procEnv = new TestProcEnv();</span>
<span class="source-line-no">073</span><span id="line-73"> testDir = htu.getDataTestDir();</span>
<span class="source-line-no">074</span><span id="line-74"> fs = testDir.getFileSystem(htu.getConfiguration());</span>
<span class="source-line-no">075</span><span id="line-75"> assertTrue(testDir.depth() &gt; 1);</span>
<span class="source-line-no">076</span><span id="line-76"></span>
<span class="source-line-no">077</span><span id="line-77"> logDir = new Path(testDir, "proc-logs");</span>
<span class="source-line-no">078</span><span id="line-78"> procStore = ProcedureTestingUtility.createWalStore(htu.getConfiguration(), logDir);</span>
<span class="source-line-no">079</span><span id="line-79"> procExecutor = new ProcedureExecutor&lt;&gt;(htu.getConfiguration(), procEnv, procStore);</span>
<span class="source-line-no">080</span><span id="line-80"> procStore.start(PROCEDURE_EXECUTOR_SLOTS);</span>
<span class="source-line-no">081</span><span id="line-81"> ProcedureTestingUtility.initAndStartWorkers(procExecutor, PROCEDURE_EXECUTOR_SLOTS, true);</span>
<span class="source-line-no">082</span><span id="line-82"> }</span>
<span class="source-line-no">083</span><span id="line-83"></span>
<span class="source-line-no">084</span><span id="line-84"> @Test</span>
<span class="source-line-no">085</span><span id="line-85"> public void testBypassSuspendProcedure() throws Exception {</span>
<span class="source-line-no">086</span><span id="line-86"> final SuspendProcedure proc = new SuspendProcedure();</span>
<span class="source-line-no">087</span><span id="line-87"> long id = procExecutor.submitProcedure(proc);</span>
<span class="source-line-no">088</span><span id="line-88"> Thread.sleep(500);</span>
<span class="source-line-no">089</span><span id="line-89"> // bypass the procedure</span>
<span class="source-line-no">090</span><span id="line-90"> assertTrue(procExecutor.bypassProcedure(id, 30000, false, false));</span>
<span class="source-line-no">091</span><span id="line-91"> htu.waitFor(5000, () -&gt; proc.isSuccess() &amp;&amp; proc.isBypass());</span>
<span class="source-line-no">092</span><span id="line-92"> LOG.info("{} finished", proc);</span>
<span class="source-line-no">093</span><span id="line-93"> }</span>
<span class="source-line-no">094</span><span id="line-94"></span>
<span class="source-line-no">095</span><span id="line-95"> @Test</span>
<span class="source-line-no">096</span><span id="line-96"> public void testStuckProcedure() throws Exception {</span>
<span class="source-line-no">097</span><span id="line-97"> final StuckProcedure proc = new StuckProcedure();</span>
<span class="source-line-no">098</span><span id="line-98"> long id = procExecutor.submitProcedure(proc);</span>
<span class="source-line-no">099</span><span id="line-99"> Thread.sleep(500);</span>
<span class="source-line-no">100</span><span id="line-100"> // bypass the procedure</span>
<span class="source-line-no">101</span><span id="line-101"> assertTrue(procExecutor.bypassProcedure(id, 1000, true, false));</span>
<span class="source-line-no">102</span><span id="line-102"> // Since the procedure is stuck there, we need to restart the executor to recovery.</span>
<span class="source-line-no">103</span><span id="line-103"> ProcedureTestingUtility.restart(procExecutor);</span>
<span class="source-line-no">104</span><span id="line-104"> htu.waitFor(5000, () -&gt; proc.isSuccess() &amp;&amp; proc.isBypass());</span>
<span class="source-line-no">105</span><span id="line-105"> LOG.info("{} finished", proc);</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"> @Test</span>
<span class="source-line-no">109</span><span id="line-109"> public void testBypassingProcedureWithParent() throws Exception {</span>
<span class="source-line-no">110</span><span id="line-110"> final RootProcedure proc = new RootProcedure();</span>
<span class="source-line-no">111</span><span id="line-111"> long rootId = procExecutor.submitProcedure(proc);</span>
<span class="source-line-no">112</span><span id="line-112"> htu.waitFor(5000, () -&gt; procExecutor.getProcedures().stream()</span>
<span class="source-line-no">113</span><span id="line-113"> .filter(p -&gt; p.getParentProcId() == rootId).collect(Collectors.toList()).size() &gt; 0);</span>
<span class="source-line-no">114</span><span id="line-114"> SuspendProcedure suspendProcedure = (SuspendProcedure) procExecutor.getProcedures().stream()</span>
<span class="source-line-no">115</span><span id="line-115"> .filter(p -&gt; p.getParentProcId() == rootId).collect(Collectors.toList()).get(0);</span>
<span class="source-line-no">116</span><span id="line-116"> assertTrue(procExecutor.bypassProcedure(suspendProcedure.getProcId(), 1000, false, false));</span>
<span class="source-line-no">117</span><span id="line-117"> htu.waitFor(5000, () -&gt; proc.isSuccess() &amp;&amp; proc.isBypass());</span>
<span class="source-line-no">118</span><span id="line-118"> LOG.info("{} finished", proc);</span>
<span class="source-line-no">119</span><span id="line-119"> }</span>
<span class="source-line-no">120</span><span id="line-120"></span>
<span class="source-line-no">121</span><span id="line-121"> @Test</span>
<span class="source-line-no">122</span><span id="line-122"> public void testBypassingStuckStateMachineProcedure() throws Exception {</span>
<span class="source-line-no">123</span><span id="line-123"> final StuckStateMachineProcedure proc =</span>
<span class="source-line-no">124</span><span id="line-124"> new StuckStateMachineProcedure(procEnv, StuckStateMachineState.START);</span>
<span class="source-line-no">125</span><span id="line-125"> long id = procExecutor.submitProcedure(proc);</span>
<span class="source-line-no">126</span><span id="line-126"> Thread.sleep(500);</span>
<span class="source-line-no">127</span><span id="line-127"> // bypass the procedure</span>
<span class="source-line-no">128</span><span id="line-128"> assertFalse(procExecutor.bypassProcedure(id, 1000, false, false));</span>
<span class="source-line-no">129</span><span id="line-129"> assertTrue(procExecutor.bypassProcedure(id, 1000, true, false));</span>
<span class="source-line-no">130</span><span id="line-130"></span>
<span class="source-line-no">131</span><span id="line-131"> htu.waitFor(5000, () -&gt; proc.isSuccess() &amp;&amp; proc.isBypass());</span>
<span class="source-line-no">132</span><span id="line-132"> LOG.info("{} finished", proc);</span>
<span class="source-line-no">133</span><span id="line-133"> }</span>
<span class="source-line-no">134</span><span id="line-134"></span>
<span class="source-line-no">135</span><span id="line-135"> @Test</span>
<span class="source-line-no">136</span><span id="line-136"> public void testBypassingProcedureWithParentRecursive() throws Exception {</span>
<span class="source-line-no">137</span><span id="line-137"> final RootProcedure proc = new RootProcedure();</span>
<span class="source-line-no">138</span><span id="line-138"> long rootId = procExecutor.submitProcedure(proc);</span>
<span class="source-line-no">139</span><span id="line-139"> htu.waitFor(5000, () -&gt; procExecutor.getProcedures().stream()</span>
<span class="source-line-no">140</span><span id="line-140"> .filter(p -&gt; p.getParentProcId() == rootId).collect(Collectors.toList()).size() &gt; 0);</span>
<span class="source-line-no">141</span><span id="line-141"> SuspendProcedure suspendProcedure = (SuspendProcedure) procExecutor.getProcedures().stream()</span>
<span class="source-line-no">142</span><span id="line-142"> .filter(p -&gt; p.getParentProcId() == rootId).collect(Collectors.toList()).get(0);</span>
<span class="source-line-no">143</span><span id="line-143"> assertTrue(procExecutor.bypassProcedure(rootId, 1000, false, true));</span>
<span class="source-line-no">144</span><span id="line-144"> htu.waitFor(5000, () -&gt; proc.isSuccess() &amp;&amp; proc.isBypass());</span>
<span class="source-line-no">145</span><span id="line-145"> LOG.info("{} finished", proc);</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"> @Test</span>
<span class="source-line-no">149</span><span id="line-149"> public void testBypassingWaitingTimeoutProcedures() throws Exception {</span>
<span class="source-line-no">150</span><span id="line-150"> final WaitingTimeoutProcedure proc = new WaitingTimeoutProcedure();</span>
<span class="source-line-no">151</span><span id="line-151"> long id = procExecutor.submitProcedure(proc);</span>
<span class="source-line-no">152</span><span id="line-152"> Thread.sleep(500);</span>
<span class="source-line-no">153</span><span id="line-153"> // bypass the procedure</span>
<span class="source-line-no">154</span><span id="line-154"> assertTrue(procExecutor.bypassProcedure(id, 1000, true, false));</span>
<span class="source-line-no">155</span><span id="line-155"></span>
<span class="source-line-no">156</span><span id="line-156"> htu.waitFor(5000, () -&gt; proc.isSuccess() &amp;&amp; proc.isBypass());</span>
<span class="source-line-no">157</span><span id="line-157"> LOG.info("{} finished", proc);</span>
<span class="source-line-no">158</span><span id="line-158"> }</span>
<span class="source-line-no">159</span><span id="line-159"></span>
<span class="source-line-no">160</span><span id="line-160"> @AfterClass</span>
<span class="source-line-no">161</span><span id="line-161"> public static void tearDown() throws Exception {</span>
<span class="source-line-no">162</span><span id="line-162"> procExecutor.stop();</span>
<span class="source-line-no">163</span><span id="line-163"> procStore.stop(false);</span>
<span class="source-line-no">164</span><span id="line-164"> procExecutor.join();</span>
<span class="source-line-no">165</span><span id="line-165"> }</span>
<span class="source-line-no">166</span><span id="line-166"></span>
<span class="source-line-no">167</span><span id="line-167"> public static class SuspendProcedure extends ProcedureTestingUtility.NoopProcedure&lt;TestProcEnv&gt; {</span>
<span class="source-line-no">168</span><span id="line-168"></span>
<span class="source-line-no">169</span><span id="line-169"> public SuspendProcedure() {</span>
<span class="source-line-no">170</span><span id="line-170"> super();</span>
<span class="source-line-no">171</span><span id="line-171"> }</span>
<span class="source-line-no">172</span><span id="line-172"></span>
<span class="source-line-no">173</span><span id="line-173"> @Override</span>
<span class="source-line-no">174</span><span id="line-174"> protected Procedure[] execute(final TestProcEnv env) throws ProcedureSuspendedException {</span>
<span class="source-line-no">175</span><span id="line-175"> // Always suspend the procedure</span>
<span class="source-line-no">176</span><span id="line-176"> throw new ProcedureSuspendedException();</span>
<span class="source-line-no">177</span><span id="line-177"> }</span>
<span class="source-line-no">178</span><span id="line-178"> }</span>
<span class="source-line-no">179</span><span id="line-179"></span>
<span class="source-line-no">180</span><span id="line-180"> public static class StuckProcedure extends ProcedureTestingUtility.NoopProcedure&lt;TestProcEnv&gt; {</span>
<span class="source-line-no">181</span><span id="line-181"></span>
<span class="source-line-no">182</span><span id="line-182"> public StuckProcedure() {</span>
<span class="source-line-no">183</span><span id="line-183"> super();</span>
<span class="source-line-no">184</span><span id="line-184"> }</span>
<span class="source-line-no">185</span><span id="line-185"></span>
<span class="source-line-no">186</span><span id="line-186"> @Override</span>
<span class="source-line-no">187</span><span id="line-187"> protected Procedure[] execute(final TestProcEnv env) {</span>
<span class="source-line-no">188</span><span id="line-188"> try {</span>
<span class="source-line-no">189</span><span id="line-189"> Thread.sleep(Long.MAX_VALUE);</span>
<span class="source-line-no">190</span><span id="line-190"> } catch (Throwable t) {</span>
<span class="source-line-no">191</span><span id="line-191"> LOG.debug("Sleep is interrupted.", t);</span>
<span class="source-line-no">192</span><span id="line-192"> }</span>
<span class="source-line-no">193</span><span id="line-193"> return null;</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>
<span class="source-line-no">197</span><span id="line-197"></span>
<span class="source-line-no">198</span><span id="line-198"> public static class RootProcedure extends ProcedureTestingUtility.NoopProcedure&lt;TestProcEnv&gt; {</span>
<span class="source-line-no">199</span><span id="line-199"> private boolean childSpwaned = false;</span>
<span class="source-line-no">200</span><span id="line-200"></span>
<span class="source-line-no">201</span><span id="line-201"> public RootProcedure() {</span>
<span class="source-line-no">202</span><span id="line-202"> super();</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"> @Override</span>
<span class="source-line-no">206</span><span id="line-206"> protected Procedure[] execute(final TestProcEnv env) throws ProcedureSuspendedException {</span>
<span class="source-line-no">207</span><span id="line-207"> if (!childSpwaned) {</span>
<span class="source-line-no">208</span><span id="line-208"> childSpwaned = true;</span>
<span class="source-line-no">209</span><span id="line-209"> return new Procedure[] { new SuspendProcedure() };</span>
<span class="source-line-no">210</span><span id="line-210"> } else {</span>
<span class="source-line-no">211</span><span id="line-211"> return null;</span>
<span class="source-line-no">212</span><span id="line-212"> }</span>
<span class="source-line-no">213</span><span id="line-213"> }</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"> public static class WaitingTimeoutProcedure</span>
<span class="source-line-no">217</span><span id="line-217"> extends ProcedureTestingUtility.NoopProcedure&lt;TestProcEnv&gt; {</span>
<span class="source-line-no">218</span><span id="line-218"> public WaitingTimeoutProcedure() {</span>
<span class="source-line-no">219</span><span id="line-219"> super();</span>
<span class="source-line-no">220</span><span id="line-220"> }</span>
<span class="source-line-no">221</span><span id="line-221"></span>
<span class="source-line-no">222</span><span id="line-222"> @Override</span>
<span class="source-line-no">223</span><span id="line-223"> protected Procedure[] execute(final TestProcEnv env) throws ProcedureSuspendedException {</span>
<span class="source-line-no">224</span><span id="line-224"> // Always suspend the procedure</span>
<span class="source-line-no">225</span><span id="line-225"> setTimeout(50000);</span>
<span class="source-line-no">226</span><span id="line-226"> setState(ProcedureProtos.ProcedureState.WAITING_TIMEOUT);</span>
<span class="source-line-no">227</span><span id="line-227"> skipPersistence();</span>
<span class="source-line-no">228</span><span id="line-228"> throw new ProcedureSuspendedException();</span>
<span class="source-line-no">229</span><span id="line-229"> }</span>
<span class="source-line-no">230</span><span id="line-230"></span>
<span class="source-line-no">231</span><span id="line-231"> @Override</span>
<span class="source-line-no">232</span><span id="line-232"> protected synchronized boolean setTimeoutFailure(TestProcEnv env) {</span>
<span class="source-line-no">233</span><span id="line-233"> setState(ProcedureProtos.ProcedureState.RUNNABLE);</span>
<span class="source-line-no">234</span><span id="line-234"> procExecutor.getScheduler().addFront(this);</span>
<span class="source-line-no">235</span><span id="line-235"> return false; // 'false' means that this procedure handled the timeout</span>
<span class="source-line-no">236</span><span id="line-236"> }</span>
<span class="source-line-no">237</span><span id="line-237"> }</span>
<span class="source-line-no">238</span><span id="line-238"></span>
<span class="source-line-no">239</span><span id="line-239"> public enum StuckStateMachineState {</span>
<span class="source-line-no">240</span><span id="line-240"> START,</span>
<span class="source-line-no">241</span><span id="line-241"> THEN,</span>
<span class="source-line-no">242</span><span id="line-242"> END</span>
<span class="source-line-no">243</span><span id="line-243"> }</span>
<span class="source-line-no">244</span><span id="line-244"></span>
<span class="source-line-no">245</span><span id="line-245"> public static class StuckStateMachineProcedure</span>
<span class="source-line-no">246</span><span id="line-246"> extends ProcedureTestingUtility.NoopStateMachineProcedure&lt;TestProcEnv, StuckStateMachineState&gt; {</span>
<span class="source-line-no">247</span><span id="line-247"> private AtomicBoolean stop = new AtomicBoolean(false);</span>
<span class="source-line-no">248</span><span id="line-248"></span>
<span class="source-line-no">249</span><span id="line-249"> public StuckStateMachineProcedure() {</span>
<span class="source-line-no">250</span><span id="line-250"> super();</span>
<span class="source-line-no">251</span><span id="line-251"> }</span>
<span class="source-line-no">252</span><span id="line-252"></span>
<span class="source-line-no">253</span><span id="line-253"> public StuckStateMachineProcedure(TestProcEnv env, StuckStateMachineState initialState) {</span>
<span class="source-line-no">254</span><span id="line-254"> super(env, initialState);</span>
<span class="source-line-no">255</span><span id="line-255"> }</span>
<span class="source-line-no">256</span><span id="line-256"></span>
<span class="source-line-no">257</span><span id="line-257"> @Override</span>
<span class="source-line-no">258</span><span id="line-258"> protected Flow executeFromState(TestProcEnv env, StuckStateMachineState tState)</span>
<span class="source-line-no">259</span><span id="line-259"> throws ProcedureSuspendedException, ProcedureYieldException, InterruptedException {</span>
<span class="source-line-no">260</span><span id="line-260"> switch (tState) {</span>
<span class="source-line-no">261</span><span id="line-261"> case START:</span>
<span class="source-line-no">262</span><span id="line-262"> LOG.info("PHASE 1: START");</span>
<span class="source-line-no">263</span><span id="line-263"> setNextState(StuckStateMachineState.THEN);</span>
<span class="source-line-no">264</span><span id="line-264"> return Flow.HAS_MORE_STATE;</span>
<span class="source-line-no">265</span><span id="line-265"> case THEN:</span>
<span class="source-line-no">266</span><span id="line-266"> if (stop.get()) {</span>
<span class="source-line-no">267</span><span id="line-267"> setNextState(StuckStateMachineState.END);</span>
<span class="source-line-no">268</span><span id="line-268"> }</span>
<span class="source-line-no">269</span><span id="line-269"> return Flow.HAS_MORE_STATE;</span>
<span class="source-line-no">270</span><span id="line-270"> case END:</span>
<span class="source-line-no">271</span><span id="line-271"> return Flow.NO_MORE_STATE;</span>
<span class="source-line-no">272</span><span id="line-272"> default:</span>
<span class="source-line-no">273</span><span id="line-273"> throw new UnsupportedOperationException("unhandled state=" + tState);</span>
<span class="source-line-no">274</span><span id="line-274"> }</span>
<span class="source-line-no">275</span><span id="line-275"> }</span>
<span class="source-line-no">276</span><span id="line-276"></span>
<span class="source-line-no">277</span><span id="line-277"> @Override</span>
<span class="source-line-no">278</span><span id="line-278"> protected StuckStateMachineState getState(int stateId) {</span>
<span class="source-line-no">279</span><span id="line-279"> return StuckStateMachineState.values()[stateId];</span>
<span class="source-line-no">280</span><span id="line-280"> }</span>
<span class="source-line-no">281</span><span id="line-281"></span>
<span class="source-line-no">282</span><span id="line-282"> @Override</span>
<span class="source-line-no">283</span><span id="line-283"> protected int getStateId(StuckStateMachineState tState) {</span>
<span class="source-line-no">284</span><span id="line-284"> return tState.ordinal();</span>
<span class="source-line-no">285</span><span id="line-285"> }</span>
<span class="source-line-no">286</span><span id="line-286"> }</span>
<span class="source-line-no">287</span><span id="line-287"></span>
<span class="source-line-no">288</span><span id="line-288">}</span>
</pre>
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