/*
* Copyright (c) 2001-2007 Sun Microsystems, Inc. All rights reserved.
*
* The Sun Project JXTA(TM) Software License
*
* 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.
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* 3. The end-user documentation included with the redistribution, if any, must
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* developed by Sun Microsystems, Inc. for JXTA(TM) technology."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
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*
* Please see the license information page at :
* <http://www.jxta.org/project/www/license.html> for instructions on use of
* the license in source files.
*
* ====================================================================
*
* 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 tutorial.propagated;
import net.jxta.document.AdvertisementFactory;
import net.jxta.document.XMLDocument;
import net.jxta.document.StructuredDocumentFactory;
import net.jxta.document.MimeMediaType;
import net.jxta.endpoint.Message;
import net.jxta.endpoint.MessageElement;
import net.jxta.endpoint.StringMessageElement;
import net.jxta.endpoint.MessageTransport;
import net.jxta.endpoint.TextDocumentMessageElement;
import net.jxta.id.IDFactory;
import net.jxta.peer.PeerID;
import net.jxta.peergroup.PeerGroup;
import net.jxta.pipe.InputPipe;
import net.jxta.pipe.OutputPipe;
import net.jxta.pipe.PipeID;
import net.jxta.pipe.PipeMsgEvent;
import net.jxta.pipe.PipeMsgListener;
import net.jxta.pipe.PipeService;
import net.jxta.platform.NetworkManager;
import net.jxta.protocol.PipeAdvertisement;
import net.jxta.protocol.RouteAdvertisement;
import net.jxta.impl.endpoint.router.RouteControl;
import net.jxta.impl.endpoint.router.EndpointRouter;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Collections;
import java.util.Map;
import java.util.Hashtable;
/**
* Simple example to illustrate the use of propagated pipes
*/
public class PropagatedPipeServer implements PipeMsgListener {
/**
* Source PeerID
*/
public final static String SRCIDTAG = "SRCID";
/**
* Source Peer Name
*/
public final static String SRCNAMETAG = "SRCNAME";
/**
* Pong TAG name
*/
public final static String PONGTAG = "PONG";
/**
* Tutorial message name space
*/
public final static String NAMESPACE = "PROPTUT";
private PeerGroup netPeerGroup = null;
/**
* Common propagated pipe id
*/
public final static String PIPEIDSTR = "urn:jxta:uuid-59616261646162614E504720503250336FA944D18E8A4131AA74CE6F4BF85DEF04";
private final static String completeLock = "completeLock";
private static PipeAdvertisement pipeAdv = null;
private static PipeService pipeService = null;
InputPipe inputPipe = null;
private transient Map<PeerID, OutputPipe> pipeCache = new Hashtable<PeerID, OutputPipe>();
public static final String ROUTEADV = "ROUTE";
private RouteControl routeControl = null;
private MessageElement routeAdvElement;
public PropagatedPipeServer() {
routeAdvElement = null;
}
/**
* Gets the pipeAdvertisement attribute of the PropagatedPipeServer class
*
* @return The pipeAdvertisement value
*/
public static PipeAdvertisement getPipeAdvertisement() {
PipeID pipeID = null;
try {
pipeID = (PipeID) IDFactory.fromURI(new URI(PIPEIDSTR));
} catch (URISyntaxException use) {
use.printStackTrace();
}
PipeAdvertisement advertisement = (PipeAdvertisement)
AdvertisementFactory.newAdvertisement(PipeAdvertisement.getAdvertisementType());
advertisement.setPipeID(pipeID);
advertisement.setType(PipeService.PropagateType);
advertisement.setName("Propagated Pipe Tutorial");
return advertisement;
}
/**
* {@inheritDoc}
*/
public void pipeMsgEvent(PipeMsgEvent event) {
Message message = event.getMessage();
if (message == null) {
return;
}
MessageElement sel = message.getMessageElement(NAMESPACE, SRCIDTAG);
MessageElement nel = message.getMessageElement(NAMESPACE, SRCNAMETAG);
// check for a route advertisement and train the endpoint router with the new route
processRoute(message);
if (sel == null) {
return;
}
System.out.println("Received a Ping from :" + nel.toString());
System.out.println("Source PeerID :" + sel.toString());
Message pong = new Message();
pong.addMessageElement(NAMESPACE, new StringMessageElement(PONGTAG, nel.toString(), null));
pong.addMessageElement(NAMESPACE, new StringMessageElement(SRCNAMETAG, netPeerGroup.getPeerName(), null));
OutputPipe outputPipe = null;
PeerID pid = null;
try {
pid = (PeerID) IDFactory.fromURI(new URI(sel.toString()));
if (pid != null) {
// Unicast the Message back. One should expect this to be unicast
// in Rendezvous only propagation mode.
// create a op pipe to the destination peer
if (!pipeCache.containsKey(pid)) {
// Unicast datagram
// create a op pipe to the destination peer
outputPipe = pipeService.createOutputPipe(pipeAdv, Collections.singleton(pid), 1);
pipeCache.put(pid, outputPipe);
} else {
outputPipe = pipeCache.get(pid);
}
boolean sucess = outputPipe.send(pong);
System.out.println("Send pong message status :"+sucess);
} else {
// send it to all
System.out.println("unable to create a peerID from :" + sel.toString());
outputPipe = pipeService.createOutputPipe(pipeAdv, 1000);
boolean sucess = outputPipe.send(pong);
System.out.println("Send pong message status :"+sucess);
}
} catch (IOException ex) {
if (pid != null && outputPipe != null) {
outputPipe.close();
outputPipe = null;
pipeCache.remove(pid);
}
ex.printStackTrace();
} catch (URISyntaxException e) {
e.printStackTrace();
}
}
/**
* Keep running, avoids existing
*/
private void waitForever() {
try {
System.out.println("Waiting for Messages.");
synchronized (completeLock) {
completeLock.wait();
}
System.out.println("Done.");
} catch (Exception e) {
e.printStackTrace();
}
}
private void processRoute(final Message msg) {
try {
final MessageElement routeElement = msg.getMessageElement(NAMESPACE, ROUTEADV);
if (routeElement != null && routeControl != null) {
XMLDocument asDoc = (XMLDocument) StructuredDocumentFactory.newStructuredDocument(routeElement.getMimeType(), routeElement.getStream());
final RouteAdvertisement route = (RouteAdvertisement) AdvertisementFactory.newAdvertisement(asDoc);
routeControl.addRoute(route);
}
} catch (IOException io) {
io.printStackTrace();
}
}
/**
* main
*
* @param args command line args
*/
public static void main(String args[]) {
PropagatedPipeServer server = new PropagatedPipeServer();
pipeAdv = getPipeAdvertisement();
NetworkManager manager = null;
try {
manager = new NetworkManager(NetworkManager.ConfigMode.ADHOC, "PropagatedPipeServer",
new File(new File(".cache"), "PropagatedPipeServer").toURI());
manager.startNetwork();
} catch (Exception e) {
e.printStackTrace();
System.exit(-1);
}
server.netPeerGroup = manager.getNetPeerGroup();
pipeService = server.netPeerGroup.getPipeService();
MessageTransport endpointRouter = (server.netPeerGroup.getEndpointService()).getMessageTransport("jxta");
if (endpointRouter != null) {
server.routeControl = (RouteControl) endpointRouter.transportControl(EndpointRouter.GET_ROUTE_CONTROL, null);
RouteAdvertisement route = server.routeControl.getMyLocalRoute();
if (route != null) {
server.routeAdvElement = new TextDocumentMessageElement(ROUTEADV, (XMLDocument) route.getDocument(MimeMediaType.XMLUTF8), null);
}
}
System.out.println("Creating Propagated InputPipe for " + pipeAdv.getPipeID());
try {
server.inputPipe = pipeService.createInputPipe(pipeAdv, server);
} catch (IOException e) {
e.printStackTrace();
System.exit(-1);
}
server.waitForever();
server.inputPipe.close();
manager.stopNetwork();
}
}