Java tutorial
/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright (c) 2009-2010 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. * * * This file incorporates work covered by the following copyright and * permission notice: * * Copyright 2004 The Apache Software Foundation * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.sun.grizzly.http.jk.core; import java.io.IOException; import java.util.Properties; import javax.management.MBeanRegistration; import javax.management.MBeanServer; import javax.management.Notification; import javax.management.NotificationListener; import javax.management.ObjectName; import org.apache.commons.modeler.Registry; /** * * @author Costin Manolache */ public class JkHandler implements MBeanRegistration, NotificationListener { public static final int OK = 0; public static final int LAST = 1; public static final int ERROR = 2; protected Properties properties = new Properties(); protected WorkerEnv wEnv; protected JkHandler next; protected String nextName = null; protected String name; protected int id; // XXX Will be replaced with notes and (configurable) ids // Each represents a 'chain' - similar with ActionCode in Coyote ( the concepts // will be merged ). public static final int HANDLE_RECEIVE_PACKET = 10; public static final int HANDLE_SEND_PACKET = 11; public static final int HANDLE_FLUSH = 12; public static final int HANDLE_THREAD_END = 13; public void setWorkerEnv(WorkerEnv we) { this.wEnv = we; } /** Set the name of the handler. Will allways be called by * worker env after creating the worker. */ public void setName(String s) { name = s; } public String getName() { return name; } /** Set the id of the worker. We use an id for faster dispatch. * Since we expect a decent number of handler in system, the * id is unique - that means we may have to allocate bigger * dispatch tables. ( easy to fix if needed ) */ public void setId(int id) { this.id = id; } public int getId() { return id; } /** Catalina-style "recursive" invocation. * A chain is used for Apache/3.3 style iterative invocation. */ public void setNext(JkHandler h) { next = h; } public void setNext(String s) { nextName = s; } public String getNext() { if (nextName == null) { if (next != null) nextName = next.getName(); } return nextName; } /** Should register the request types it can handle, * same style as apache2. */ public void init() throws IOException { } /** Clean up and stop the handler */ public void destroy() throws IOException { } public MsgContext createMsgContext() { return new MsgContext(8 * 1024); } public MsgContext createMsgContext(int bsize) { return new MsgContext(bsize); } public int invoke(Msg msg, MsgContext mc) throws IOException { return OK; } public void setProperty(String name, String value) { properties.put(name, value); } public String getProperty(String name) { return properties.getProperty(name); } /** Experimental, will be replaced. This allows handlers to be * notified when other handlers are added. */ public void addHandlerCallback(JkHandler w) { } public void handleNotification(Notification notification, Object handback) { // BaseNotification bNot=(BaseNotification)notification; // int code=bNot.getCode(); // // MsgContext ctx=(MsgContext)bNot.getSource(); } protected String domain; protected ObjectName oname; protected MBeanServer mserver; public ObjectName getObjectName() { return oname; } public String getDomain() { return domain; } public ObjectName preRegister(MBeanServer server, ObjectName oname) throws Exception { this.oname = oname; mserver = server; domain = oname.getDomain(); if (name == null) { name = oname.getKeyProperty("name"); } // we need to create a workerEnv or set one. ObjectName wEnvName = new ObjectName(domain + ":type=JkWorkerEnv"); if (wEnv == null) { wEnv = new WorkerEnv(); } if (!mserver.isRegistered(wEnvName)) { Registry.getRegistry(null, null).registerComponent(wEnv, wEnvName, null); } mserver.invoke(wEnvName, "addHandler", new Object[] { name, this }, new String[] { "java.lang.String", "com.sun.grizzly.http.jk.core.JkHandler" }); return oname; } public void postRegister(Boolean registrationDone) { } public void preDeregister() throws Exception { } public void postDeregister() { } public void pause() throws Exception { } public void resume() throws Exception { } }