wirepipe.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: WirePipe.java,v 1.2 2002/03/04 21:42:59 echtcherbina 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
 *       Sun 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.pipe;

import java.util.*;
import java.io.*;
import java.net.*;

import net.jxta.pipe.*;
import net.jxta.pipe.PipeID;
import net.jxta.peergroup.*;
import net.jxta.protocol.*;
import net.jxta.rendezvous.*;
import net.jxta.endpoint.*;
import net.jxta.service.*;
import net.jxta.peer.*;

import net.jxta.impl.endpoint.*;
import net.jxta.document.Advertisement;

import net.jxta.impl.peergroup.*;
import net.jxta.impl.endpoint.*;
import net.jxta.impl.id.UUID.UUID;
import net.jxta.impl.id.UUID.UUIDFactory;

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



/**
 * This class implements the JXTA-WIRE pipe.
 */

public class WirePipe implements EndpointListener {
    
    private static final Category LOG = Category.getInstance(WirePipe.class.getName());
    
    private RefPeerGroup myGroup = null;
    private RendezVousService rendezvous = null;
    private String localPeerId = null;
    private Vector inputs = null;
    private Vector pipemsglisteners = null;
    private boolean valid = false;
    private String wireId = null;
    
    public static final String WireName = "jxta.service.wirepipe";
    public static final String WireKeywords = "WIRE";
    public static final String WirePrefix = "JxtaWire";
    public static final String WireVersion = "1.0";
    public static final String WireTagName = "JxtaWireHeader";
    public static final int DefaultTTL = 7;
    
    /**
     * Constructor
     *
     * @param myGroup The Group associated with this service
     * @param pipe advertisement
     */
    
    public WirePipe(PeerGroup g, PipeAdvertisement adv) 
        throws IllegalArgumentException {
        
	// First check that the advertisement is really a propagate pipe
	if (!adv.getType().equals (PipeService.PropagateType)) {
	    if (LOG.isEnabledFor(Priority.DEBUG)) LOG.debug ("Wrong PipeService type");
	    throw new IllegalArgumentException ();
	}

        this.myGroup = (RefPeerGroup) g;
        wireId = adv.getPipeID().toString();
        
        // Get the rendezvous service
        rendezvous = myGroup.getRendezVousService();
        
        try {
            rendezvous.addPropagateListener(WireName + wireId, this);
        } catch (Exception e){
            valid = false;
            if (LOG.isEnabledFor(Priority.WARN)) LOG.warn("Cannot register EndpointService");
        }
        
        // Creating the hash table that will contain all the input queues.
        inputs = new Vector();
        
        // Creating vector of PipeMsgListener's
        pipemsglisteners = new Vector();
        
        // local settings
        localPeerId = myGroup.getPeerID().toString();
        valid = true;
    }
    
    
    /**
     * Creates an InputPipe of a WIRE
     *
     * @return InputPipe returns a InputPipe associated to the wire.
     */
    public InputPipe createInputPipe()
	throws IOException {
        
        if (!valid) {
            // This WIRE is not valid
            throw new IOException();
        }
        
        // create an InputPipe.
        InputPipe ip = new WireInputPipe(this);
        return ip;
    }
    
    /**
     * create an InputPipe from a pipe Advertisement and a PipeMsgListener
     *
     * @param listener PipeMsgListener to receive msgs.
     * @return InputPipe InputPipe object created
     *
     * @exception IOException error creating input pipe
     */
    public InputPipe createInputPipe(PipeMsgListener listener) throws IOException {
        if (!valid) {
            // This WIRE is not valid
            throw new IOException();
        }
        
        // create an InputPipe.
        InputPipe ip = new WireInputPipe(this, listener);
        return ip;
        
    }
    
    public synchronized void registerQueue(EndpointReceiveQueue queue) {
        
        inputs.addElement(queue);
    }
    
    
    public synchronized void forgetQueue(EndpointReceiveQueue queue) {
        
        inputs.removeElement(queue);
    }
    
    public synchronized void registerPipeMsgListener(PipeMsgListener listener) {
        
        pipemsglisteners.addElement(listener);
    }
    
    public synchronized void forgetPipeMsgListener(PipeMsgListener listener) {
        
        pipemsglisteners.removeElement(listener);
    }
    
    
    /**
     * Creates an OutputPipe associated to a wire
     *
     * @return OutputPipe returns an OutputPipe associated to the
     * destination wire.
     */
    
    public OutputPipe    createOutputPipe(long timeout)
	throws IOException {
        
        if (!valid) {
            // This WIRE is not valid
            throw new IOException();
        }

        // create a OutputPipe
        OutputPipe op = null;
        op = new WirePublicOutputPipe(this, wireId);
        return op;
    }