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Glassfish example source code file (GrizzlyListener.java)
The Glassfish GrizzlyListener.java source code/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 2007-2010 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.services.impl; import com.sun.enterprise.v3.services.impl.monitor.GrizzlyMonitoring; import com.sun.enterprise.v3.services.impl.monitor.MonitorableServiceListener; import com.sun.grizzly.Controller; import com.sun.grizzly.ProtocolChain; import com.sun.grizzly.ProtocolChainInstanceHandler; import com.sun.grizzly.arp.AsyncFilter; import com.sun.grizzly.arp.AsyncHandler; import com.sun.grizzly.arp.DefaultAsyncHandler; import com.sun.grizzly.config.GrizzlyEmbeddedHttp; import com.sun.grizzly.config.dom.NetworkListener; import org.jvnet.hk2.component.Habitat; import java.beans.PropertyChangeEvent; import java.io.IOException; /** * This class extends Grizzly's GrizzlyServiceListener class to customize it for GlassFish * and enable a single listener do both lazy service initialization as well as init of HTTP * and admin listeners * @author Vijay Ramachandran */ public class GrizzlyListener extends MonitorableServiceListener { private boolean isGenericListener = false; private ServiceInitializerThread serviceInitializer; private NetworkListener listener; public GrizzlyListener(GrizzlyMonitoring monitoring, Controller controller, String listenerName) { super(monitoring, controller, listenerName); } /* * Configures the given grizzlyListener. */ @Override public void configure(NetworkListener networkListener, Habitat habitat) { this.listener = networkListener; if("light-weight-listener".equals(networkListener.getProtocol())) { isGenericListener = true; } if(!isGenericListener) { super.configure(networkListener, habitat); } else { initializeListener(networkListener, habitat); setName(networkListener.getName()); } } private void initializeListener(NetworkListener networkListener, Habitat habitat) { serviceInitializer = new ServiceInitializerThread(this, habitat); serviceInitializer.setController(this.getController()); serviceInitializer.configure(networkListener); } public NetworkListener getListener() { return this.listener; } @Override public void start() throws IOException, InstantiationException { if(isGenericListener) { serviceInitializer.initController(); serviceInitializer.startEndpoint(); } else { getEmbeddedHttp().initEndpoint(); getEmbeddedHttp().startEndpoint(); } } @Override public void stop() { if(isGenericListener) { serviceInitializer.stopEndpoint(); } else { getEmbeddedHttp().stopEndpoint(); } } public void initEndpoint() throws IOException, InstantiationException { if(isGenericListener) { serviceInitializer.initEndpoint(); } else { getEmbeddedHttp().initEndpoint(); } } @Override public Controller getController() { if(isGenericListener) { return serviceInitializer.getController(); } else { return getEmbeddedHttp().getController(); } } public void startEndpoint() throws IOException, InstantiationException { if(isGenericListener) { serviceInitializer.startEndpoint(); } else { getEmbeddedHttp().startEndpoint(); } } public boolean isGenericListener() { return isGenericListener; } @Override public int getPort() { if(isGenericListener) { return serviceInitializer.getPort(); } else { return getEmbeddedHttp().getPort(); } } public void processDynamicConfigurationChange(Habitat habitat, PropertyChangeEvent[] events) { for (PropertyChangeEvent event: events) { if ("comet-support-enabled".equals(event.getPropertyName())) { processDynamicCometConfiguration(habitat, event); break; } } } // --------------------------------------------------------- Private Methods private void processDynamicCometConfiguration(Habitat habitat, PropertyChangeEvent event) { final boolean enableComet = Boolean.valueOf(event.getNewValue().toString()); if (enableComet) { enableComet(habitat); } else { disableComet(); } } private void enableComet(final Habitat habitat) { AsyncFilter cometFilter = GrizzlyEmbeddedHttp.loadCometAsyncFilter(habitat); if (cometFilter == null) { return; } if (getEmbeddedHttp().getAsyncHandler() == null) { AsyncHandler asyncHandler = new DefaultAsyncHandler(); getEmbeddedHttp().setAsyncHandler(asyncHandler); } getEmbeddedHttp().getAsyncHandler().addAsyncFilter(cometFilter); final ProtocolChainInstanceHandler pcih = getEmbeddedHttp().getController().getProtocolChainInstanceHandler(); if (!(pcih instanceof NonCachingInstanceHandler)) { ProtocolChainInstanceHandler nonCaching = new NonCachingInstanceHandler(pcih); getEmbeddedHttp().getController().setProtocolChainInstanceHandler(nonCaching); } getEmbeddedHttp().setEnableAsyncExecution(true); } private void disableComet() { getEmbeddedHttp().setAsyncHandler(null); final ProtocolChainInstanceHandler pcih = getEmbeddedHttp().getController().getProtocolChainInstanceHandler(); if (!(pcih instanceof NonCachingInstanceHandler)) { ProtocolChainInstanceHandler nonCaching = new NonCachingInstanceHandler(pcih); getEmbeddedHttp().getController().setProtocolChainInstanceHandler(nonCaching); } getEmbeddedHttp().setEnableAsyncExecution(false); } // ---------------------------------------------------------- Nested Classes /** * This ProtocolChainInstanceHandler will be used to prevent GrizzlyEmbeddedHttp * from caching the default PCIH that isn't based on the async configuration * change (i.e., if comet is enabled, the current PCIH will not handle async * execution properly, so we don't want it cached). */ private static final class NonCachingInstanceHandler implements ProtocolChainInstanceHandler { private final ProtocolChainInstanceHandler wrapped; // -------------------------------------------------------- Constructors private NonCachingInstanceHandler(ProtocolChainInstanceHandler wrapped) { this.wrapped = wrapped; } // --------------------------- Methods from ProtocolChainInstanceHandler @Override public ProtocolChain poll() { return wrapped.poll(); } @Override public boolean offer(ProtocolChain protocolChain) { return true; } } // END NonCachingInstanceHandler } Other Glassfish examples (source code examples)Here is a short list of links related to this Glassfish GrizzlyListener.java source code file: |
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