001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.test;
019
020import org.apache.hadoop.conf.Configuration;
021import org.apache.hadoop.hbase.HBaseConfiguration;
022import org.apache.hadoop.hbase.IntegrationTestingUtility;
023import org.apache.hadoop.hbase.chaos.util.ChaosMonkeyRunner;
024import org.apache.hadoop.hbase.chaos.util.Monkeys;
025import org.apache.hadoop.hbase.testclassification.IntegrationTests;
026import org.apache.hadoop.util.ToolRunner;
027import org.junit.Test;
028import org.junit.experimental.categories.Category;
029
030/**
031 * This is an integration test for showing a simple usage of how to use {@link Monkeys} to control
032 * {@link ChaosMonkeyRunner}.
033 */
034@Category(IntegrationTests.class)
035public class IntegrationTestMonkeys extends ChaosMonkeyRunner {
036  private static final int RUN_SECS = 15 * 1000;
037  private static final int WAIT_SECS = 10 * 1000;
038
039  @Override
040  protected int doWork() throws Exception {
041    super.setUpCluster();
042    runMonkeys();
043    return 0;
044  }
045
046  @Test
047  public void runMonkeys() throws Exception {
048    try (Monkeys monkeys = new Monkeys()) {
049      for (int i = 0; i < 2; i++) {
050        monkeys.startChaos();
051        Thread.sleep(RUN_SECS);
052        monkeys.stopChaos();
053        Thread.sleep(WAIT_SECS);
054      }
055    }
056  }
057
058  public static void main(String[] args) throws Exception {
059    // Run chaos monkeys 15 seconds, then stop them.
060    // After 10 seconds, run chaos monkeys again.
061    Configuration conf = HBaseConfiguration.create();
062    IntegrationTestingUtility.setUseDistributedCluster(conf);
063    int exitCode = ToolRunner.run(conf, new IntegrationTestMonkeys(), args);
064    System.exit(exitCode);
065  }
066}