| /** |
| * 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.hbase; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.util.UUID; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hbase.HealthChecker.HealthCheckerExitStatus; |
| import org.apache.hadoop.hbase.testclassification.MiscTests; |
| import org.apache.hadoop.hbase.testclassification.SmallTests; |
| import org.apache.hadoop.util.Shell; |
| import org.junit.After; |
| import org.junit.Test; |
| import org.junit.experimental.categories.Category; |
| |
| @Category({MiscTests.class, SmallTests.class}) |
| public class TestNodeHealthCheckChore { |
| |
| private static final Log LOG = LogFactory.getLog(TestNodeHealthCheckChore.class); |
| private static final HBaseTestingUtility UTIL = new HBaseTestingUtility(); |
| private static final int SCRIPT_TIMEOUT = 5000; |
| private File healthScriptFile; |
| private String eol = System.getProperty("line.separator"); |
| |
| @After |
| public void cleanUp() throws IOException { |
| // delete and recreate the test directory, ensuring a clean test dir between tests |
| Path testDir = UTIL.getDataTestDir(); |
| FileSystem fs = UTIL.getTestFileSystem(); |
| fs.delete(testDir, true); |
| if (!fs.mkdirs(testDir)) throw new IOException("Failed mkdir " + testDir); |
| } |
| |
| @Test(timeout=60000) |
| public void testHealthCheckerSuccess() throws Exception { |
| String normalScript = "echo \"I am all fine\""; |
| healthCheckerTest(normalScript, HealthCheckerExitStatus.SUCCESS); |
| } |
| |
| @Test(timeout=60000) |
| public void testHealthCheckerFail() throws Exception { |
| String errorScript = "echo ERROR" + eol + "echo \"Node not healthy\""; |
| healthCheckerTest(errorScript, HealthCheckerExitStatus.FAILED); |
| } |
| |
| @Test(timeout=60000) |
| public void testHealthCheckerTimeout() throws Exception { |
| String timeOutScript = "sleep 10" + eol + "echo \"I am fine\""; |
| healthCheckerTest(timeOutScript, HealthCheckerExitStatus.TIMED_OUT); |
| } |
| |
| public void healthCheckerTest(String script, HealthCheckerExitStatus expectedStatus) |
| throws Exception { |
| Configuration config = getConfForNodeHealthScript(); |
| config.addResource(healthScriptFile.getName()); |
| String location = healthScriptFile.getAbsolutePath(); |
| long timeout = config.getLong(HConstants.HEALTH_SCRIPT_TIMEOUT, SCRIPT_TIMEOUT); |
| |
| HealthChecker checker = new HealthChecker(); |
| checker.init(location, timeout); |
| |
| createScript(script, true); |
| HealthReport report = checker.checkHealth(); |
| assertEquals(expectedStatus, report.getStatus()); |
| |
| LOG.info("Health Status:" + report.getHealthReport()); |
| |
| this.healthScriptFile.delete(); |
| } |
| |
| @Test(timeout=60000) |
| public void testRSHealthChore() throws Exception{ |
| Stoppable stop = new StoppableImplementation(); |
| Configuration conf = getConfForNodeHealthScript(); |
| String errorScript = "echo ERROR" + eol + " echo \"Server not healthy\""; |
| createScript(errorScript, true); |
| HealthCheckChore rsChore = new HealthCheckChore(100, stop, conf); |
| try { |
| //Default threshold is three. |
| rsChore.chore(); |
| rsChore.chore(); |
| assertFalse("Stoppable must not be stopped.", stop.isStopped()); |
| rsChore.chore(); |
| assertTrue("Stoppable must have been stopped.", stop.isStopped()); |
| } finally { |
| stop.stop("Finished w/ test"); |
| } |
| } |
| |
| private void createScript(String scriptStr, boolean setExecutable) |
| throws Exception { |
| if (!this.healthScriptFile.exists()) { |
| if (!healthScriptFile.createNewFile()) { |
| throw new IOException("Failed create of " + this.healthScriptFile); |
| } |
| } |
| PrintWriter pw = new PrintWriter(new FileOutputStream(healthScriptFile)); |
| try { |
| pw.println(scriptStr); |
| pw.flush(); |
| } finally { |
| pw.close(); |
| } |
| healthScriptFile.setExecutable(setExecutable); |
| LOG.info("Created " + this.healthScriptFile + ", executable=" + setExecutable); |
| } |
| |
| private Configuration getConfForNodeHealthScript() throws IOException { |
| Configuration conf = UTIL.getConfiguration(); |
| File tempDir = new File(UTIL.getDataTestDir().toString()); |
| if (!tempDir.exists()) { |
| if (!tempDir.mkdirs()) { |
| throw new IOException("Failed mkdirs " + tempDir); |
| } |
| } |
| String scriptName = "HealthScript" + UUID.randomUUID().toString() |
| + (Shell.WINDOWS ? ".cmd" : ".sh"); |
| healthScriptFile = new File(tempDir.getAbsolutePath(), scriptName); |
| conf.set(HConstants.HEALTH_SCRIPT_LOC, healthScriptFile.getAbsolutePath()); |
| conf.setLong(HConstants.HEALTH_FAILURE_THRESHOLD, 3); |
| conf.setLong(HConstants.HEALTH_SCRIPT_TIMEOUT, SCRIPT_TIMEOUT); |
| return conf; |
| } |
| |
| /** |
| * Simple helper class that just keeps track of whether or not its stopped. |
| */ |
| private static class StoppableImplementation implements Stoppable { |
| private volatile boolean stop = false; |
| |
| @Override |
| public void stop(String why) { |
| this.stop = true; |
| } |
| |
| @Override |
| public boolean isStopped() { |
| return this.stop; |
| } |
| |
| } |
| } |