/* * 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 * . * * This license is based on the BSD license adopted by the Apache Foundation. * * $Id: PipeExample.java,v 1.1 2006-09-13 19:38:41 genaud Exp $ */ import java.io.FileInputStream; import java.io.IOException; import java.util.Date; import net.jxta.discovery.DiscoveryService; import net.jxta.document.AdvertisementFactory; import net.jxta.document.MimeMediaType; import net.jxta.document.StructuredDocument; import net.jxta.document.StructuredDocumentFactory; import net.jxta.document.XMLDocument; import net.jxta.endpoint.Message; import net.jxta.endpoint.StringMessageElement; import net.jxta.exception.PeerGroupException; import net.jxta.peergroup.PeerGroup; import net.jxta.peergroup.PeerGroupFactory; import net.jxta.pipe.OutputPipe; import net.jxta.pipe.OutputPipeEvent; import net.jxta.pipe.OutputPipeListener; import net.jxta.pipe.PipeService; import net.jxta.protocol.PipeAdvertisement; import net.jxta.rendezvous.RendezVousService; import net.jxta.rendezvous.RendezvousEvent; import net.jxta.rendezvous.RendezvousListener; /** * This exapmle illustrates how to use the OutputPipeListener interface * */ public class PipeExample implements Runnable, OutputPipeListener, RendezvousListener { static PeerGroup netPeerGroup = null; private final static String SenderMessage = "PipeListenerMsg"; private PipeService pipe; private DiscoveryService discovery; private PipeAdvertisement pipeAdv; private RendezVousService rendezvous; /** * main * *@param args command line arguments */ public static void main(String args[]) { Date d = new Date(System.currentTimeMillis()); System.out.println("\n\n[PipeExample started at "+ d.toString() + "]\n\n"); PipeExample myapp = new PipeExample(); myapp.startJxta(); myapp.run(); } /** * the thread which creates (resolves) the output pipe * and sends a message once it's resolved */ public synchronized void run() { try { // create output pipe with asynchronously // Send out the first pipe resolve call System.out.println("Attempting to create a OutputPipe"); pipe.createOutputPipe(pipeAdv, this); // send out a second pipe resolution after we connect // to a rendezvous if (!rendezvous.isConnectedToRendezVous()) { System.out.println("Waiting for Rendezvous Connection"); try { wait(); System.out.println("Connected to Rendezvous, attempting to create a OutputPipe"); pipe.createOutputPipe(pipeAdv, this); } catch (InterruptedException e) { // got our notification } } } catch (IOException e) { System.out.println("OutputPipe creation failure"); e.printStackTrace(); System.exit(-1); } } /** * by implementing OutputPipeListener we must define this method which * is called when the output pipe is created * *@param event event object from which to get output pipe object */ public void outputPipeEvent(OutputPipeEvent event) { System.out.println("--> Got Output pipe event"); OutputPipe op = event.getOutputPipe(); Message msg = null; Date date; try { date = new Date(System.currentTimeMillis()); System.out.println("--> Sending message on "+ date.toString()); msg = new Message(); StringMessageElement sme = new StringMessageElement(SenderMessage, date.toString() , null); msg.addMessageElement(null, sme); op.send(msg); } catch (IOException e) { System.out.println("failed to send message"); e.printStackTrace(); System.exit(-1); } op.close(); date = new Date(System.currentTimeMillis()); System.out.println("--> Message sent on "+date.toString()); } /** * rendezvousEvent the rendezvous event * *@param event rendezvousEvent */ public synchronized void rendezvousEvent(RendezvousEvent event) { if (event.getType() == event.RDVCONNECT || event.getType() == event.RDVRECONNECT ) { notify(); } } /** * Starts jxta, and get the pipe, and discovery service */ private void startJxta() { try { // create, and Start the default jxta NetPeerGroup netPeerGroup = PeerGroupFactory.newNetPeerGroup(); rendezvous = netPeerGroup.getRendezVousService(); rendezvous.addListener(this); // uncomment the following line if you want to start the app defined // the NetPeerGroup Advertisement (by default it's the shell) // in this case we want use jxta directly. // netPeerGroup.startApp(null); } catch (PeerGroupException e) { // could not instantiate the group, print the stack and exit System.out.println("fatal error : group creation failure"); e.printStackTrace(); System.exit(-1); } // get the pipe service, and discovery pipe = netPeerGroup.getPipeService(); discovery = netPeerGroup.getDiscoveryService(); System.out.println("Reading in pipexample.adv"); try { FileInputStream is = new FileInputStream("pipexample.adv"); XMLDocument document = (XMLDocument) StructuredDocumentFactory.newStructuredDocument(MimeMediaType.XMLUTF8, is); pipeAdv = (PipeAdvertisement) AdvertisementFactory.newAdvertisement(document); is.close(); } catch (Exception e) { System.out.println("failed to read/parse pipe advertisement"); e.printStackTrace(); System.exit(-1); } } }