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Glassfish example source code file (GroupInfoServiceObserverImpl.java)
The Glassfish GroupInfoServiceObserverImpl.java source code/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 2006-2011 Oracle and/or its affiliates. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can * obtain a copy of the License at * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html * or packager/legal/LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at packager/legal/LICENSE.txt. * * GPL Classpath Exception: * Oracle designates this particular file as subject to the "Classpath" * exception as provided by Oracle in the GPL Version 2 section of the License * file that accompanied this code. * * Modifications: * If applicable, add the following below the License Header, with the fields * enclosed by brackets [] replaced by your own identifying information: * "Portions Copyright [year] [name of copyright owner]" * * Contributor(s): * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ package com.sun.enterprise.naming.impl; import java.util.List; import com.sun.corba.ee.spi.folb.GroupInfoServiceObserver; import com.sun.corba.ee.spi.folb.GroupInfoService; import com.sun.corba.ee.spi.folb.ClusterInstanceInfo; import java.util.logging.Logger; import java.util.logging.Level; import com.sun.logging.LogDomains; /** * Called when the GroupInfoService that you register with * has a change. You should call the GroupInfoService * <code>getClusterInstanceInfo method to get * updated info. * @author Ken Cavanaugh * @author Sheetal Vartak */ public class GroupInfoServiceObserverImpl implements GroupInfoServiceObserver { protected static final Logger _logger = LogDomains.getLogger( GroupInfoServiceObserverImpl.class, LogDomains.JNDI_LOGGER); private static void doLog( Level level, String fmt, Object... args ) { if (_logger.isLoggable(level)) { _logger.log( level, fmt, args ) ; } } private static void fineLog( String fmt, Object... args ) { doLog( Level.FINE, fmt, args ) ; } private GroupInfoService gis; private RoundRobinPolicy rr ; public GroupInfoServiceObserverImpl(GroupInfoService gis, RoundRobinPolicy rr ) { this.gis = gis; this.rr = rr ; } // This method is called for internally forced updates: // see SerialInitContextFactory.getInitialContext. public void forceMembershipChange() { fineLog( "GroupInfoServiceObserverImpl.forceMembershipChange called") ; doMembershipChange() ; } @Override // This method is called when the client is informed about a cluster // membership change through ClientGroupManager.receive_star. public void membershipChange() { fineLog( "GroupInfoServiceObserverImpl.membershipChange called") ; doMembershipChange() ; } private void doMembershipChange() { try { List<ClusterInstanceInfo> instanceInfoList = gis.getClusterInstanceInfo((String[])null, rr.getHostPortList() ); if (instanceInfoList != null && instanceInfoList.size() > 0) { rr.setClusterInstanceInfo(instanceInfoList); } } catch(Exception e) { _logger.log(Level.SEVERE, "groupinfoservice.membership.notification.problem", new Object[] {e}); } } } Other Glassfish examples (source code examples)Here is a short list of links related to this Glassfish GroupInfoServiceObserverImpl.java source code file: |
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