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The source code/* * Copyright 1999-2004 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 org.apache.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(); } 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().registerComponent(wEnv, wEnvName, null); } mserver.invoke( wEnvName, "addHandler", new Object[] {name, this}, new String[] {"java.lang.String", "org.apache.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 { } } |
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