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Glassfish example source code file (MigrateTimers.java)
The Glassfish MigrateTimers.java source code/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 1997-2010 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 org.glassfish.ejb.admin.cli; import com.sun.enterprise.admin.util.ClusterOperationUtil; import com.sun.enterprise.config.serverbeans.Cluster; import com.sun.enterprise.config.serverbeans.Domain; import com.sun.enterprise.config.serverbeans.Server; import com.sun.enterprise.util.SystemPropertyConstants; import com.sun.enterprise.util.i18n.StringManager; import com.sun.logging.LogDomains; import java.util.Arrays; import java.util.List; import java.util.logging.Logger; import org.glassfish.ejb.api.DistributedEJBTimerService; import org.glassfish.api.ActionReport; import org.glassfish.api.I18n; import org.glassfish.api.Param; import org.glassfish.api.admin.AdminCommand; import org.glassfish.api.admin.AdminCommandContext; import org.glassfish.api.admin.FailurePolicy; import org.glassfish.api.admin.ParameterMap; import org.glassfish.api.admin.RuntimeType; import org.glassfish.common.util.admin.ParameterMapExtractor; import org.glassfish.config.support.CommandTarget; import org.glassfish.config.support.TargetType; import org.glassfish.internal.api.Target; import org.jvnet.hk2.annotations.Inject; import org.jvnet.hk2.annotations.Service; import org.jvnet.hk2.annotations.Scoped; import org.jvnet.hk2.component.Habitat; import org.jvnet.hk2.component.PerLookup; @Service(name = "migrate-timers") @Scoped(PerLookup.class) @I18n("migrate.timers") @org.glassfish.api.admin.ExecuteOn(value = {RuntimeType.INSTANCE}) @TargetType(value = {CommandTarget.DAS, CommandTarget.CLUSTERED_INSTANCE}) public class MigrateTimers implements AdminCommand { static StringManager localStrings = StringManager.getManager(MigrateTimers.class); private static final Logger logger = LogDomains.getLogger(MigrateTimers.class, LogDomains.EJB_LOGGER); @Param(name = "target", optional = true, alias="destination", defaultValue=SystemPropertyConstants.DEFAULT_SERVER_INSTANCE_NAME) public String target; private boolean needRedirect; @Param(name = "fromServer", primary = true, optional = false) public String fromServer; @Inject DistributedEJBTimerService timerService; @Inject private Domain domain; @Inject Target targetUtil; @Inject private Habitat habitat; /** * Executes the command * * @param context information */ @Override public void execute(AdminCommandContext context) { final ActionReport report = context.getActionReport(); String error = validate(); if (error != null) { report.setMessage(error); report.setActionExitCode(ActionReport.ExitCode.FAILURE); return; } try { if (needRedirect) { needRedirect = false; ParameterMapExtractor mapExtractor = new ParameterMapExtractor(this); ParameterMap params = mapExtractor.extract(); logger.info(localStrings.getString("migrate.timers.redirect", target, params.toCommaSeparatedString())); ClusterOperationUtil.replicateCommand("migrate-timers", FailurePolicy.Error, FailurePolicy.Error, Arrays.asList(new String[]{target}), context, params, habitat); return; } int totalTimersMigrated = timerService.migrateTimers(fromServer); report.setMessage(localStrings.getString("migrate.timers.count", totalTimersMigrated, fromServer, target)); report.setActionExitCode(ActionReport.ExitCode.SUCCESS); } catch (Exception e) { report.setActionExitCode(ActionReport.ExitCode.FAILURE); report.setFailureCause(e); } } private String validate() { //verify fromServer is clusteredInstance Cluster fromServerCluster = targetUtil.getClusterForInstance(fromServer); if(fromServerCluster == null) { return localStrings.getString("migrate.timers.fromServerNotClusteredInstance", fromServer); } //verify fromServer is not running if (isServerRunning(fromServer)) { return localStrings.getString( "migrate.timers.migrateFromServerStillRunning", fromServer); } //if destinationServer is not set, or set to DAS, pick a running instance //in the same cluster as fromServer if(target.equals(SystemPropertyConstants.DEFAULT_SERVER_INSTANCE_NAME)) { List<Server> instances = fromServerCluster.getInstances(); for(Server instance : instances) { if(instance.isRunning()) { target = instance.getName(); needRedirect = true; } } //if destination is still DAS, that means no running server is available if(target.equals(SystemPropertyConstants.DEFAULT_SERVER_INSTANCE_NAME)) { return localStrings.getString("migrate.timers.noRunningInstanceToChoose", target); } } else { //verify fromServer and destinationServer are in the same cluster, and //verify destination is a clustered instance. Cluster destinationServerCluster = targetUtil.getClusterForInstance(target); if (!fromServerCluster.getName().equals(destinationServerCluster.getName())) { return localStrings.getString( "migrate.timers.fromServerAndTargetNotInSameCluster", fromServer, target); } //verify destinationServer is running if (!isServerRunning(target)) { return localStrings.getString("migrate.timers.destinationServerIsNotAlive", target); } } return null; } private boolean isServerRunning(String serverName) { Server server = domain.getServerNamed(serverName); return (server == null) ? false : server.isRunning(); } } Other Glassfish examples (source code examples)Here is a short list of links related to this Glassfish MigrateTimers.java source code file: |
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