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 */
018
019package org.apache.hadoop.hbase.chaos.factories;
020
021import org.apache.hadoop.hbase.chaos.actions.Action;
022import org.apache.hadoop.hbase.chaos.actions.DumpClusterStatusAction;
023import org.apache.hadoop.hbase.chaos.actions.ForceBalancerAction;
024import org.apache.hadoop.hbase.chaos.actions.GracefulRollingRestartRsAction;
025import org.apache.hadoop.hbase.chaos.actions.RestartActiveMasterAction;
026import org.apache.hadoop.hbase.chaos.actions.RestartRandomRsExceptMetaAction;
027import org.apache.hadoop.hbase.chaos.actions.RollingBatchRestartRsExceptMetaAction;
028import org.apache.hadoop.hbase.chaos.actions.RollingBatchSuspendResumeRsAction;
029import org.apache.hadoop.hbase.chaos.monkies.ChaosMonkey;
030import org.apache.hadoop.hbase.chaos.monkies.PolicyBasedChaosMonkey;
031import org.apache.hadoop.hbase.chaos.policies.CompositeSequentialPolicy;
032import org.apache.hadoop.hbase.chaos.policies.DoActionsOncePolicy;
033import org.apache.hadoop.hbase.chaos.policies.PeriodicRandomActionPolicy;
034
035/**
036 * Creates ChaosMonkeys for doing server restart actions, but not
037 * flush / compact / snapshot kind of actions.
038 */
039public class ServerKillingMonkeyFactory extends MonkeyFactory {
040
041  private long gracefulRollingRestartTSSLeepTime;
042  private long rollingBatchSuspendRSSleepTime;
043  private float rollingBatchSuspendtRSRatio;
044
045  @Override
046  public ChaosMonkey build() {
047    loadProperties();
048
049    // Destructive actions to mess things around. Cannot run batch restart
050    Action[] actions1 = new Action[] {
051        new RestartRandomRsExceptMetaAction(60000),
052        new RestartActiveMasterAction(5000),
053        new RollingBatchRestartRsExceptMetaAction(5000, 1.0f, 2), //only allow 2 servers to be dead
054      new ForceBalancerAction(),
055      new GracefulRollingRestartRsAction(gracefulRollingRestartTSSLeepTime),
056      new RollingBatchSuspendResumeRsAction(rollingBatchSuspendRSSleepTime,
057          rollingBatchSuspendtRSRatio)
058    };
059
060    // Action to log more info for debugging
061    Action[] actions2 = new Action[] {
062        new DumpClusterStatusAction()
063    };
064
065    return new PolicyBasedChaosMonkey(util,
066      new CompositeSequentialPolicy(
067          new DoActionsOncePolicy(60 * 1000, actions1),
068          new PeriodicRandomActionPolicy(60 * 1000, actions1)),
069      new PeriodicRandomActionPolicy(60 * 1000, actions2));
070  }
071
072  private void loadProperties() {
073    gracefulRollingRestartTSSLeepTime = Long.parseLong(this.properties.getProperty(
074        MonkeyConstants.GRACEFUL_RESTART_RS_SLEEP_TIME,
075        MonkeyConstants.DEFAULT_GRACEFUL_RESTART_RS_SLEEP_TIME + ""));
076    rollingBatchSuspendRSSleepTime = Long.parseLong(this.properties.getProperty(
077        MonkeyConstants.ROLLING_BATCH_SUSPEND_RS_SLEEP_TIME,
078        MonkeyConstants.DEFAULT_ROLLING_BATCH_SUSPEND_RS_SLEEP_TIME+ ""));
079    rollingBatchSuspendtRSRatio = Float.parseFloat(this.properties.getProperty(
080        MonkeyConstants.ROLLING_BATCH_SUSPEND_RS_RATIO,
081        MonkeyConstants.DEFAULT_ROLLING_BATCH_SUSPEND_RS_RATIO + ""));
082  }
083}