| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.hadoop.util; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.TimerTask; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileContext; |
| import org.apache.hadoop.fs.FileUtil; |
| import org.apache.hadoop.fs.Path; |
| import org.junit.After; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class TestNodeHealthScriptRunner { |
| |
| protected static File testRootDir = new File("target", |
| TestNodeHealthScriptRunner.class.getName() + |
| "-localDir").getAbsoluteFile(); |
| |
| private File nodeHealthscriptFile = new File(testRootDir, |
| Shell.appendScriptExtension("failingscript")); |
| |
| @Before |
| public void setup() { |
| testRootDir.mkdirs(); |
| } |
| |
| @After |
| public void tearDown() throws Exception { |
| if (testRootDir.exists()) { |
| FileContext.getLocalFSFileContext().delete( |
| new Path(testRootDir.getAbsolutePath()), true); |
| } |
| } |
| |
| private void writeNodeHealthScriptFile(String scriptStr, boolean setExecutable) |
| throws IOException { |
| PrintWriter pw = null; |
| try { |
| FileUtil.setWritable(nodeHealthscriptFile, true); |
| FileUtil.setReadable(nodeHealthscriptFile, true); |
| pw = new PrintWriter(new FileOutputStream(nodeHealthscriptFile)); |
| pw.println(scriptStr); |
| pw.flush(); |
| } finally { |
| pw.close(); |
| } |
| FileUtil.setExecutable(nodeHealthscriptFile, setExecutable); |
| } |
| |
| @Test |
| public void testNodeHealthScriptShouldRun() throws IOException { |
| Assert.assertFalse("Node health script should start", |
| NodeHealthScriptRunner.shouldRun( |
| nodeHealthscriptFile.getAbsolutePath())); |
| writeNodeHealthScriptFile("", false); |
| // Node health script should not start if the node health script is not |
| // executable. |
| Assert.assertFalse("Node health script should start", |
| NodeHealthScriptRunner.shouldRun( |
| nodeHealthscriptFile.getAbsolutePath())); |
| writeNodeHealthScriptFile("", true); |
| Assert.assertTrue("Node health script should start", |
| NodeHealthScriptRunner.shouldRun( |
| nodeHealthscriptFile.getAbsolutePath())); |
| } |
| |
| @Test |
| public void testNodeHealthScript() throws Exception { |
| String errorScript = "echo ERROR\n echo \"Tracker not healthy\""; |
| String normalScript = "echo \"I am all fine\""; |
| String timeOutScript = |
| Shell.WINDOWS ? "@echo off\nping -n 4 127.0.0.1 >nul\necho \"I am fine\"" |
| : "sleep 4\necho \"I am fine\""; |
| Configuration conf = new Configuration(); |
| writeNodeHealthScriptFile(normalScript, true); |
| NodeHealthScriptRunner nodeHealthScriptRunner = new NodeHealthScriptRunner( |
| nodeHealthscriptFile.getAbsolutePath(), |
| 500, 1000, new String[] {}); |
| nodeHealthScriptRunner.init(conf); |
| TimerTask timerTask = nodeHealthScriptRunner.getTimerTask(); |
| |
| timerTask.run(); |
| // Normal Script runs successfully |
| Assert.assertTrue("Node health status reported unhealthy", |
| nodeHealthScriptRunner.isHealthy()); |
| Assert.assertEquals("", nodeHealthScriptRunner.getHealthReport()); |
| |
| // Error script. |
| writeNodeHealthScriptFile(errorScript, true); |
| // Run timer |
| timerTask.run(); |
| Assert.assertFalse("Node health status reported healthy", |
| nodeHealthScriptRunner.isHealthy()); |
| Assert.assertTrue( |
| nodeHealthScriptRunner.getHealthReport().contains("ERROR")); |
| |
| // Healthy script. |
| writeNodeHealthScriptFile(normalScript, true); |
| timerTask.run(); |
| Assert.assertTrue("Node health status reported unhealthy", |
| nodeHealthScriptRunner.isHealthy()); |
| Assert.assertEquals("", nodeHealthScriptRunner.getHealthReport()); |
| |
| // Timeout script. |
| writeNodeHealthScriptFile(timeOutScript, true); |
| timerTask.run(); |
| Assert.assertFalse("Node health status reported healthy even after timeout", |
| nodeHealthScriptRunner.isHealthy()); |
| Assert.assertEquals( |
| NodeHealthScriptRunner.NODE_HEALTH_SCRIPT_TIMED_OUT_MSG, |
| nodeHealthScriptRunner.getHealthReport()); |
| } |
| } |