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Glassfish example source code file (GetHealthCommand.java)
The Glassfish GetHealthCommand.java source code/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 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 com.sun.enterprise.v3.admin.cluster; import com.sun.enterprise.config.serverbeans.Cluster; import com.sun.enterprise.config.serverbeans.Domain; 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.CommandLock; import org.glassfish.api.admin.ServerEnvironment; import org.glassfish.gms.bootstrap.GMSAdapter; import org.glassfish.gms.bootstrap.GMSAdapterService; import org.glassfish.gms.bootstrap.HealthHistory; import org.jvnet.hk2.annotations.Inject; import org.jvnet.hk2.annotations.Scoped; import org.jvnet.hk2.annotations.Service; import org.jvnet.hk2.component.PerLookup; import java.util.Date; import java.util.SortedSet; import java.util.TreeSet; import java.util.logging.Level; import java.util.logging.Logger; /** * The get-health command that lists the health status of * instances within a cluster. * Currently only works when GMS is enabled. To implement the * non-GMS case, look for the else block with comment "non-gms" */ @Service(name="get-health") @I18n("get.health.command") @Scoped(PerLookup.class) @CommandLock(CommandLock.LockType.NONE) public class GetHealthCommand implements AdminCommand { @Inject private Domain domain; @Inject private ServerEnvironment env; @Inject GMSAdapterService gmsAdapterService; @Param(optional=false, primary=true) @I18n("get.health.cluster.name") private String clusterName; private ActionReport report; private Logger logger; private GMSAdapter gmsAdapter; @Override public void execute(AdminCommandContext context) { report = context.getActionReport(); logger = context.getLogger(); logger.log(Level.INFO, Strings.get("get.health.called", clusterName)); // output will be handled within this method if (!checkEnvAndParams()) { return; } /* * Check that gms is enabled for this cluster. Could also check * gmsAdapterService.isGmsEnabled() and * domain.getClusterNamed(clusterName).getGmsEnabled(), but that * should be redundant. If the GMSAdapter exists for the cluster, * we can use GMS. */ gmsAdapter = gmsAdapterService.getGMSAdapterByName(clusterName); if (gmsAdapter != null) { getHealthWithGMS(); } else { // if someone wants to implement the non-gms case, here's where setFail(Strings.get("get.health.noGMS", clusterName)); } } // return false for any failures private boolean checkEnvAndParams() { // first check that we're the DAS if (!env.isDas()) { return setFail(Strings.get("get.health.onlyRunsOnDas")); } // check that cluster exists Cluster cluster = domain.getClusterNamed(clusterName); if (cluster == null) { return setFail(Strings.get("get.health.noCluster", clusterName)); } // ok to go return true; } /* * Simply get the HealthHistory object from GMSAdapter and output * the information. */ private void getHealthWithGMS() { StringBuilder result = new StringBuilder(); HealthHistory history = gmsAdapter.getHealthHistory(); if (history == null) { setFail(Strings.get("get.health.noHistoryError")); return; } // check for data if (history.getInstances().isEmpty()) { report.setMessage(Strings.get( "get.health.no.instances", clusterName)); return; } // order by instance name and output SortedSet<String> names = new TreeSet Other Glassfish examples (source code examples)Here is a short list of links related to this Glassfish GetHealthCommand.java source code file: |
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