01: /*
02: * JBoss, Home of Professional Open Source.
03: * Copyright 2006, Red Hat Middleware LLC, and individual contributors
04: * as indicated by the @author tags. See the copyright.txt file in the
05: * distribution for a full listing of individual contributors.
06: *
07: * This is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU Lesser General Public License as
09: * 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: 57188 $
34: */
35: public class HASingletonMBeanExample implements
36: HASingletonMBeanExampleMBean {
37: private static Logger log = Logger
38: .getLogger(HASingletonMBeanExample.class);
39: private boolean isMasterNode = false;
40:
41: public void startSingleton() {
42: isMasterNode = true;
43: log.info("Notified to start as singleton");
44: }
45:
46: public boolean isMasterNode() {
47: return isMasterNode;
48: }
49:
50: public void stopSingleton(String gracefulShutdown) {
51: isMasterNode = false;
52: log.info("Notified to stop as singleton with argument: "
53: + gracefulShutdown);
54: }
55:
56: }
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