View Javadoc

1   /**
2    * Copyright 2010 The Apache Software Foundation
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  package org.apache.hadoop.hbase.master.handler;
21  
22  import org.apache.hadoop.hbase.Server;
23  import org.apache.hadoop.hbase.ServerName;
24  import org.apache.hadoop.hbase.master.DeadServer;
25  import org.apache.hadoop.hbase.master.MasterServices;
26  
27  /**
28   * Shutdown handler for the server hosting <code>-ROOT-</code>,
29   * <code>.META.</code>, or both.
30   */
31  public class MetaServerShutdownHandler extends ServerShutdownHandler {
32    private final boolean carryingRoot;
33    private final boolean carryingMeta;
34  
35    public MetaServerShutdownHandler(final Server server,
36        final MasterServices services,
37        final DeadServer deadServers, final ServerName serverName,
38        final boolean carryingRoot, final boolean carryingMeta) {
39      super(server, services, deadServers, serverName,
40        EventType.M_META_SERVER_SHUTDOWN, true);
41      this.carryingRoot = carryingRoot;
42      this.carryingMeta = carryingMeta;
43    }
44  
45    @Override
46    boolean isCarryingRoot() {
47      return this.carryingRoot;
48    }
49  
50    @Override
51    boolean isCarryingMeta() {
52      return this.carryingMeta;
53    }
54    
55    @Override
56    public String toString() {
57      String name = "UnknownServerName";
58      if(server != null && server.getServerName() != null) {
59        name = server.getServerName().toString();
60      }
61      return getClass().getSimpleName() + "-" + name + "-" + getSeqid();
62    }
63  }