NotifyDisableBackend


1   /**
2    * Sequoia: Database clustering technology.
3    * Copyright (C) 2002-2004 French National Institute For Research In Computer
4    * Science And Control (INRIA).
5    * Copyright (C) 2005 AmicoSoft, Inc. dba Emic Networks
6    * Copyright (C) 2005-2006 Continuent, Inc.
7    * Contact: sequoia@continuent.org
8    * 
9    * Licensed under the Apache License, Version 2.0 (the "License");
10   * you may not use this file except in compliance with the License.
11   * You may obtain a copy of the License at
12   * 
13   * http://www.apache.org/licenses/LICENSE-2.0
14   * 
15   * Unless required by applicable law or agreed to in writing, software
16   * distributed under the License is distributed on an "AS IS" BASIS,
17   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18   * See the License for the specific language governing permissions and
19   * limitations under the License. 
20   *
21   * Initial developer(s): Emmanuel Cecchet.
22   * Contributor(s): ______________________.
23   */
24  
25  package org.continuent.sequoia.controller.virtualdatabase.protocol;
26  
27  import java.io.Serializable  ;
28  
29  import org.continuent.hedera.common.Member;
30  import org.continuent.sequoia.common.jmx.management.BackendInfo;
31  import org.continuent.sequoia.controller.virtualdatabase.DistributedVirtualDatabase;
32  
33  /**
34   * Send the information that the sender wants to disable the specified backend.
35   * 
36   * @author <a HREF="mailto:Emmanuel.Cecchet@inria.fr">Emmanuel Cecchet </a>
37   * @version 1.0
38   */
39  public class NotifyDisableBackend extends DistributedVirtualDatabaseMessage
40  {
41    private static final long serialVersionUID = 430250030369313030L;
42  
43    private BackendInfo       backendInfo;
44  
45    /**
46     * Creates a new DisableBackend object with the specified backend information.
47     * 
48     * @param backendInfo information on the backend to disable
49     */
50    public NotifyDisableBackend(BackendInfo backendInfo)
51    {
52      this.backendInfo = backendInfo;
53    }
54  
55    /**
56     * @see org.continuent.sequoia.controller.virtualdatabase.protocol.DistributedVirtualDatabaseMessage#handleMessageSingleThreaded(org.continuent.sequoia.controller.virtualdatabase.DistributedVirtualDatabase,
57     *      org.continuent.hedera.common.Member)
58     */
59    public Object   handleMessageSingleThreaded(DistributedVirtualDatabase dvdb,
60        Member sender)
61    {
62      return null;
63    }
64  
65    /**
66     * @see org.continuent.sequoia.controller.virtualdatabase.protocol.DistributedVirtualDatabaseMessage#handleMessageMultiThreaded(org.continuent.sequoia.controller.virtualdatabase.DistributedVirtualDatabase,
67     *      org.continuent.hedera.common.Member, java.lang.Object)
68     */
69    public Serializable   handleMessageMultiThreaded(
70        DistributedVirtualDatabase dvdb, Member sender,
71        Object   handleMessageSingleThreadedResult)
72    {
73      dvdb.handleRemoteDisableBackendNotification(backendInfo
74          .getDatabaseBackend(dvdb), sender);
75      return null;
76    }
77  
78  }
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