jettyhttpserver.java

jxme的一些相关程序,主要是手机上程序开发以及手机和计算机通信的一些程序资料,程序编译需要Ant支持

/*
 *
 * $Id: JettyHttpServer.java,v 1.11 2002/06/04 01:41:41 jice Exp $
 *
 * Copyright (c) 2001 Sun Microsystems, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *       Suncom. Microsystems, Inc. for Project JXTA."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA"
 *    must not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact Project JXTA at http://www.jxta.org.
 *
 * 5. Products derived from this software may not be called "JXTA",
 *    nor may "JXTA" appear in their name, without prior written
 *    permission of Sun.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL SUN MICROSYSTEMS OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Project JXTA.  For more
 * information on Project JXTA, please see
 * <http://www.jxta.org/>.
 *
 * This license is based on the BSD license adopted by the Apache Foundation.
 */

package net.jxta.impl.endpoint.servlethttp;

import org.mortbay.http.SocketListener;
import org.mortbay.http.HttpServer;
import org.mortbay.http.HttpContext;
import org.mortbay.util.InetAddrPort;
import org.mortbay.util.MultiException;
import org.mortbay.jetty.servlet.ServletHandler;
import java.io.IOException;
import java.net.InetAddress;
import java.util.*;

import net.jxta.endpoint.EndpointService;

import org.apache.log4j.Category;
import org.apache.log4j.Priority;

/**
 * A Jetty (see http://jetty.mortbay.com) implementation of the JxtaHttpServer
 * interface.
 */
public class JettyHttpServer implements JxtaHttpServer {

	/** the Jetty HTTP Server instance **/
	private HttpServer server = null;

	/** This is the handler context for Jetty **/
	private HttpContext handlerContext = null;

	/** The endpoint that the http server is receiving messages for. We only
	 * have to keep this around because we init it in init(), then use it in
	 * start() **/
	private EndpointService endpoint = null;

	/** The servlet handler. We only have to keep this around because we
	 * init it in init(), then use it in start() **/
	private ServletHandler handler;

	private static final Category LOG = Category.getInstance(JettyHttpServer.class.getName());

	/**
	 * Default constructor. There is nothing that needs to be done here, but
	 * note that init() must be called before start() can be called.
	 */
	public JettyHttpServer() {
	}

	/** Intializes the server **/
	public void init( InetAddress addr,
	                  int port,
	                  EndpointService endpoint,
	                  int minThreads,
	                  int maxThreads,
	                  int maxThreadIdleTimeMs,
	                  int maxReadTimeMs )
	throws IOException {

		// save the endpoint reference
		this.endpoint = endpoint;

		// Construct a Jetty listener
		InetAddrPort addrPort = new InetAddrPort(addr,port);
		SocketListener listener = new SocketListener(addrPort);
		listener.setMinThreads(minThreads);
		listener.setMaxThreads(maxThreads);
		listener.setMaxIdleTimeMs(maxThreadIdleTimeMs);
		listener.setMaxReadTimeMs(maxReadTimeMs);

		// Create the Jetty http server and add the listener
		server = new HttpServer();
		listener.setHttpServer(server);
		server.addListener(listener);

		// Create a context for the handlers at the root, then added a servlet
		// handler for the specified servlet class and add it to the context
		handlerContext = server.addContext( "/" );
		handler = new ServletHandler();
		handler.initialize(handlerContext);
		handlerContext.addHandler(handler);
	}

	/** Just hands it over to the handler **/
	public void addServlet( String pathSpec, String servletClassName ) {
		handler.addServlet( pathSpec, servletClassName );
	}

	/** attrMap is a temp holding place until the jetty engine starts up.
	 * We do this because we don't have a context until it starts. **/
	private HashMap attrMap = new HashMap();
	public void setContextAttribute(String name, Object value) {
		attrMap.put(name,value);
	}

	/** add the attributes to the context and then call's Jetty's start
	 * method **/
	public void start() throws IOException {

		if (server!=null) {
			if (LOG.isEnabledFor(Priority.INFO)) {
				LOG.info("Jetty HTTP server starting");
			}
			try {
				server.start();
			} catch (MultiException e) {
				LOG.error( e );
				throw new IOException("Problem starting Jetty: " + e);
			}

			// Add the endpoint to the servlet context so the servlet
			// has access to it. Also, add up the stored attrs.
			handler.getServletContext().setAttribute("endpoint", endpoint);

			Iterator i = attrMap.keySet().iterator();
			while (i.hasNext()) {
				String key = (String) i.next();
				Object value = attrMap.get(key);
				handler.getServletContext().setAttribute(key, value);
			}
		} else {
			if (LOG.isEnabledFor(Priority.INFO)) {
				LOG.info("Jetty HTTP server not initialized; cannot start");
			}
			throw new IOException("Jetty HTTP server not initialized; cannot start");
		}
	}

	/** simply calls Jetty's stop method **/
	public void stop() throws InterruptedException {
		if (server!=null) {
			server.stop();
		}
	}
}