001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.portal.kernel.cluster;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    
020    /**
021     * @author Michael C. Han
022     */
023    public abstract class BaseClusterMasterTokenTransitionListener
024            implements ClusterMasterTokenTransitionListener {
025    
026            @Override
027            public void masterTokenAcquired() {
028                    try {
029                            doMasterTokenAcquired();
030                    }
031                    catch (Exception e) {
032                            if (_log.isWarnEnabled()) {
033                                    _log.warn("Unable to process the token acquired event", e);
034                            }
035                    }
036            }
037    
038            @Override
039            public void masterTokenReleased() {
040                    try {
041                            doMasterTokenReleased();
042                    }
043                    catch (Exception e) {
044                            if (_log.isWarnEnabled()) {
045                                    _log.warn("Unable to process the token released event", e);
046                            }
047                    }
048            }
049    
050            protected abstract void doMasterTokenAcquired() throws Exception;
051    
052            protected abstract void doMasterTokenReleased() throws Exception;
053    
054            private static Log _log = LogFactoryUtil.getLog(
055                    BaseClusterMasterTokenTransitionListener.class);
056    
057    }