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Java > Open Source Codes > org > jboss > ha > singleton > examples > HASingletonMBeanExample


1 /*
2   * JBoss, Home of Professional Open Source
3   * Copyright 2005, JBoss Inc., and individual contributors as indicated
4   * by the @authors tag. See the copyright.txt in the distribution for a
5   * full listing of individual contributors.
6   *
7   * This is free software; you can redistribute it and/or modify it
8   * under the terms of the GNU Lesser General Public License as
9   * published by the Free Software Foundation; either version 2.1 of
10   * the License, or (at your option) any later version.
11   *
12   * This software is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15   * Lesser General Public License for more details.
16   *
17   * You should have received a copy of the GNU Lesser General Public
18   * License along with this software; if not, write to the Free
19   * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20   * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21   */
22 package org.jboss.ha.singleton.examples;
23
24 import org.jboss.logging.Logger;
25
26 /**
27  * <p>
28  * An sample singleton MBean.
29  * </p>
30  *
31  * @author Ivelin Ivanov <ivelin@apache.org>
32  * @author Scott.Stark@jboss.org
33  * @version $Revision: 37459 $
34  */
35 public class HASingletonMBeanExample
36    implements HASingletonMBeanExampleMBean
37 {
38    private static Logger log = Logger.getLogger(HASingletonMBeanExample.class);
39    private boolean isMasterNode = false;
40
41    public void startSingleton()
42    {
43       isMasterNode = true;
44       log.info("Notified to start as singleton");
45    }
46
47    public boolean isMasterNode()
48    {
49       return isMasterNode;
50    }
51
52   public void stopSingleton( String JavaDoc gracefulShutdown )
53    {
54       isMasterNode = false;
55       log.info("Notified to stop as singleton with argument: " + gracefulShutdown);
56    }
57
58 }
59
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