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1   /**
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  
19  package org.apache.hadoop.hbase.chaos.actions;
20  
21  import java.io.IOException;
22  
23  import org.apache.hadoop.hbase.ServerName;
24  import org.apache.hadoop.hbase.util.Threads;
25  
26  /**
27  * Base class for restarting HBaseServer's
28  */
29  public class RestartActionBaseAction extends Action {
30    long sleepTime; // how long should we sleep
31  
32    public RestartActionBaseAction(long sleepTime) {
33      this.sleepTime = sleepTime;
34    }
35  
36    void sleep(long sleepTime) {
37      LOG.info("Sleeping for:" + sleepTime);
38      Threads.sleep(sleepTime);
39    }
40  
41    void restartMaster(ServerName server, long sleepTime) throws IOException {
42      sleepTime = Math.max(sleepTime, 1000);
43      // Don't try the kill if we're stopping
44      if (context.isStopping()) {
45        return;
46      }
47  
48      killMaster(server);
49      sleep(sleepTime);
50      startMaster(server);
51    }
52  
53    void restartRs(ServerName server, long sleepTime) throws IOException {
54      sleepTime = Math.max(sleepTime, 1000);
55      // Don't try the kill if we're stopping
56      if (context.isStopping()) {
57        return;
58      }
59      killRs(server);
60      sleep(sleepTime);
61      startRs(server);
62    }
63  
64    void restartZKNode(ServerName server, long sleepTime) throws IOException {
65      sleepTime = Math.max(sleepTime, 1000);
66      // Don't try the kill if we're stopping
67      if (context.isStopping()) {
68        return;
69      }
70      killZKNode(server);
71      sleep(sleepTime);
72      startZKNode(server);
73    }
74  
75    void restartDataNode(ServerName server, long sleepTime) throws IOException {
76      sleepTime = Math.max(sleepTime, 1000);
77      // Don't try the kill if we're stopping
78      if (context.isStopping()) {
79        return;
80      }
81      killDataNode(server);
82      sleep(sleepTime);
83      startDataNode(server);
84    }
85  }