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.actions;
020
021import java.io.IOException;
022
023import org.apache.hadoop.hbase.ServerName;
024import org.apache.hadoop.hbase.util.Threads;
025import org.slf4j.Logger;
026import org.slf4j.LoggerFactory;
027
028/**
029* Base class for restarting HBaseServer's
030*/
031public class RestartActionBaseAction extends Action {
032  private static final Logger LOG =
033      LoggerFactory.getLogger(RestartActionBaseAction.class);
034  long sleepTime; // how long should we sleep
035
036  public RestartActionBaseAction(long sleepTime) {
037    this.sleepTime = sleepTime;
038  }
039
040  void sleep(long sleepTime) {
041    LOG.info("Sleeping for:" + sleepTime);
042    Threads.sleep(sleepTime);
043  }
044
045  void restartMaster(ServerName server, long sleepTime) throws IOException {
046    sleepTime = Math.max(sleepTime, 1000);
047    // Don't try the kill if we're stopping
048    if (context.isStopping()) {
049      return;
050    }
051
052    killMaster(server);
053    sleep(sleepTime);
054    startMaster(server);
055  }
056
057  void restartRs(ServerName server, long sleepTime) throws IOException {
058    sleepTime = Math.max(sleepTime, 1000);
059    // Don't try the kill if we're stopping
060    if (context.isStopping()) {
061      return;
062    }
063    killRs(server);
064    sleep(sleepTime);
065    startRs(server);
066  }
067
068  void restartZKNode(ServerName server, long sleepTime) throws IOException {
069    sleepTime = Math.max(sleepTime, 1000);
070    // Don't try the kill if we're stopping
071    if (context.isStopping()) {
072      return;
073    }
074    killZKNode(server);
075    sleep(sleepTime);
076    startZKNode(server);
077  }
078
079  void restartDataNode(ServerName server, long sleepTime) throws IOException {
080    sleepTime = Math.max(sleepTime, 1000);
081    // Don't try the kill if we're stopping
082    if (context.isStopping()) {
083      return;
084    }
085    killDataNode(server);
086    sleep(sleepTime);
087    startDataNode(server);
088  }
089}