pipeserviceimpl.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: PipeServiceImpl.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.io.IOException;
import java.util.Enumeration;
import java.util.Hashtable;
import java.net.URL;

import net.jxta.document.Advertisement;
import net.jxta.service.Service;
import net.jxta.protocol.PipeAdvertisement;
import net.jxta.protocol.ModuleImplAdvertisement;
import net.jxta.endpoint.Message;
import net.jxta.endpoint.EndpointService;
import net.jxta.peergroup.PeerGroup;
import net.jxta.pipe.PipeService;
import net.jxta.pipe.OutputPipe;
import net.jxta.pipe.InputPipe;
import net.jxta.pipe.PipeMsgListener;
import net.jxta.pipe.OutputPipeListener;
import net.jxta.pipe.PipeID;
import net.jxta.pipe.OutputPipeEvent;
import net.jxta.pipe.OutputPipeListener;
import net.jxta.peer.PeerID;
import net.jxta.id.IDFactory;
import net.jxta.id.ID;

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


/**
 * This class implements the NetPipe interface.
 *
 */

public class PipeServiceImpl implements PipeService {

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

    private static Hashtable queueTable = null;
    private PeerGroup myGroup = null;
    private EndpointService endpoint = null;
    private PipeResolver pipeResolver = null;
    private ModuleImplAdvertisement implAdvertisement = null;
    private Hashtable listeners = new Hashtable();

    /**
     * Propagate PipeService variables
     **/
    private Hashtable wirePipes = new Hashtable();


    /**
     * Constructor: this constructor is only needed in order to create
     * the listener thread of the NodePipe.
     *
     * @since 1.0
     */
    public PipeServiceImpl() { }


    /**
     * Service objects are not manipulated directly to protect usage
     * of the service. A Service interface is returned to access the service
     * methods.
     *
     * @return    Service public interface of the service
     * @since     1.0
     */
    public Service getInterface() {
        return new PipeServiceInterface(this);
    }


    /**
     * Returns the advertisement for that service.
     *
     * @return    Advertisement the advertisement.
     * @since     1.0
     */
    public Advertisement getImplAdvertisement() {
        return implAdvertisement;
    }


    /**
     * Supply arguments and starts this service if it hadn't started by itself.
     *
     * Currently this service does not expect arguments.
     *
     * @param  arg  A table of strings arguments.
     * @return      int status indication.
     * @since 1.0
     */
    public int startApp(String[] arg) {
        // create our resolver handler; it will register itself w/ the resolver.
        pipeResolver = new PipeResolver(myGroup);

        return 0;
    }


    /**
     * Ask this service to stop.
     *
     * @since 1.0
     */
    public void stopApp() {
      //XXX what else do we need to do?
      if (pipeResolver == null) return;

      pipeResolver.stop();
      pipeResolver = null;
    }


    /**
     * Init routine
     *
     * @param  g        group associated in which this service operates in
     * @param  sadv     the PipeService service advertisement
     * @since 1.0
     */

    public void init(PeerGroup pg, ID assignedID, Advertisement impl) {

        implAdvertisement = (ModuleImplAdvertisement) impl;
        myGroup = pg;

        // Creating the hash table that will contain all the input queues.
        queueTable = new Hashtable();

        // Get the endpoint.
        endpoint = myGroup.getEndpointService();
    }


    /**
     * Creates an InputPipe of a NetPipe.
     *
     * @param  adv              is the public advertisement of the NetPipe.
     * @return                  InputPipe returns a InputPipe associated to the NetPipe.
     * @exception  IOException  Description of Exception
     * @since 1.0
     */
    public InputPipe createInputPipe(PipeAdvertisement adv)
        throws IOException {


        InputPipe ip = null;

	String type = adv.getType();
	PipeID pipeId = (PipeID) adv.getPipeID().clone();

	if (LOG.isEnabledFor(Priority.DEBUG)) LOG.debug ("createInputPipe: " + pipeId.toString());
	if (LOG.isEnabledFor(Priority.DEBUG)) LOG.debug ("           type: " + type);

	if (type.equals (PipeService.UnicastType)) {

	    if (pipeResolver == null) throw new IOException("PipeResolver not ready");

	    // create an InputPipe.
	    ip = new InputPipeImpl(myGroup,
				   pipeResolver,
				   pipeId);

	} else if (type.equals (PipeService.UnicastSecureType)) {

	    if (pipeResolver == null) throw new IOException("PipeResolver not ready");

	    // create an InputPipe.
	    ip = new SecureInputPipeImpl(myGroup,
					 pipeResolver,
					 pipeId);

	} else if (type.equals (PipeService.PropagateType)) {
	    WirePipe wirePipe = createWirePipe (adv);
	    if (wirePipe == null) {
		throw new IOException ("Invalid propagate pipe");
	    }
	    ip = wirePipe.createInputPipe ();

	} else {
	    // Unknown type
	    throw new IOException("unknown pipe type");
        }
        return ip;
    }

  /**
   * create an InputPipe from a pipe Advertisement
   *
   * @param adv is the advertisement of the PipeServiceImpl.
   * @param listener PipeMsgListener to receive msgs.
   * @return InputPipe InputPipe object created
   *
   * @exception IOException error creating input pipe
   *
   * @since JXTA 1.0
   */
    public InputPipe createInputPipe(
              PipeAdvertisement adv,
              PipeMsgListener listener)
     throws IOException {


	String type = adv.getType();
        PipeID pipeId = (PipeID) adv.getPipeID().clone();
        InputPipe ip = null;

	if (LOG.isEnabledFor(Priority.DEBUG)) LOG.debug ("createInputPipe: " + pipeId.toString());
	if (LOG.isEnabledFor(Priority.DEBUG)) LOG.debug ("           type: " + type);

	if (type.equals (PipeService.UnicastType)) {
	    if (pipeResolver == null) throw new IOException("PipeResolver not ready");

	    // create an InputPipe.
	    ip = new InputPipeImpl(myGroup,
				   pipeResolver,
				   pipeId,
				   listener );
	} else if (type.equals (PipeService.UnicastSecureType)) {
	    if (pipeResolver == null) throw new IOException("PipeResolver not ready");

	    // create an InputPipe.
	    ip = new SecureInputPipeImpl(myGroup,
					 pipeResolver,
					 pipeId,
					 listener );
	} else if (type.equals (PipeService.PropagateType)) {
	    WirePipe wirePipe = createWirePipe (adv);
	    if (wirePipe == null) {
		throw new IOException ("Invalid propagate pipe");
	    }
	    ip = wirePipe.createInputPipe (listener);

	} else {
	    // Unknown type
	    throw new IOException("unknown pipe type");
        }

        return ip;
    }



    /**
     * Creates an OutputPipe associated to a NetPipe.
     *
     * @param  timeout          the number of milliseconds to wait during pipe creation
     * @param  pipeAdv          Description of Parameter
     * @return                  OutputPipe returns an OutputPipe associated to the
     * destination NetPipe.
     * @exception  IOException  Description of Exception
     * @since 1.0
     */

    // deprecated. To be removed when PipeService API change will be completed.
    public OutputPipe createOutputPipe(PipeAdvertisement pipeAdv, int type, long timeout) throws IOException {
	return createOutputPipe (pipeAdv, timeout);
    }


    public OutputPipe createOutputPipe(PipeAdvertisement pipeAdv, long timeout) throws IOException {

        if (pipeResolver == null) throw new IOException("PipeResolver not ready");