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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.policies;
20  
21  import org.apache.commons.logging.Log;
22  import org.apache.commons.logging.LogFactory;
23  import org.apache.hadoop.hbase.IntegrationTestingUtility;
24  import org.apache.hadoop.hbase.chaos.actions.Action;
25  import org.apache.hadoop.hbase.util.StoppableImplementation;
26  
27  /**
28   * A policy to introduce chaos to the cluster
29   */
30  public abstract class Policy extends StoppableImplementation implements Runnable {
31  
32    protected static Log LOG = LogFactory.getLog(Policy.class);
33  
34    protected PolicyContext context;
35  
36    public void init(PolicyContext context) throws Exception {
37      this.context = context;
38    }
39  
40    /**
41     * A context for a Policy
42     */
43    public static class PolicyContext extends Action.ActionContext {
44      public PolicyContext(IntegrationTestingUtility util) {
45        super(util);
46      }
47    }
48  }