/*
* Copyright (c) 2006-2008 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:
*
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* this list of conditions and the following disclaimer.
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* developed by Sun Microsystems, Inc. for JXTA(TM) technology."
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* and wherever such third-party acknowledgments normally appear.
*
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* ====================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of Project JXTA. For more information on Project JXTA, please see
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*
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*/
package tutorial.content;
import net.jxta.content.Content;
import net.jxta.content.ContentID;
import net.jxta.content.ContentProviderEvent;
import net.jxta.content.ContentProviderListener;
import net.jxta.content.ContentService;
import net.jxta.content.ContentShare;
import net.jxta.content.ContentShareEvent;
import net.jxta.content.ContentShareListener;
import net.jxta.discovery.DiscoveryService;
import net.jxta.document.FileDocument;
import net.jxta.document.MimeMediaType;
import net.jxta.id.IDFactory;
import net.jxta.peergroup.PeerGroup;
import net.jxta.platform.NetworkManager;
import net.jxta.protocol.ContentShareAdvertisement;
import java.io.*;
import java.util.*;
import java.net.*;
/**
* This tutorial illustrates the use Content API from the
* perspective of the serving peer.
* <p/>
* The server is started and instructed to serve a file
* to all peers.
*/
public class ContentServer {
static final String DEFAULT_CONTENT_ID =
"urn:jxta:uuid-59616261646162614E50472050325033901EA80A652D476C9D1089545CEDE7B007";
private transient NetworkManager manager = null;
private transient PeerGroup netPeerGroup = null;
private transient boolean waitForRendezvous = false;
private final ContentID contentID;
private final File file;
/**
* Content provider listener used to be notified of any activity being
* performed by the contrnt provider.
*/
private ContentProviderListener provListener =
new ContentProviderListener() {
public void contentShared(ContentProviderEvent event) {
logEvent("Content shared:", event);
}
public void contentUnshared(ContentProviderEvent event) {
logEvent("Content unshared: ", event);
}
public boolean contentSharesFound(ContentProviderEvent event) {
throw new UnsupportedOperationException("Not supported yet.");
}
};
/**
* Content share listener used to be notified of any activity during
* a content transfer.
*/
private ContentShareListener shareListener = new ContentShareListener() {
public void shareSessionOpened(ContentShareEvent event) {
logEvent("Session opened: ", event);
}
public void shareSessionClosed(ContentShareEvent event) {
logEvent("Session closed", event);
}
public void shareAccessed(ContentShareEvent event) {
logEvent("Share access", event);
}
};
/**
* Constructor.
*
* @param toServe file to serve
* @param id ContentID to use when serving the toServer file, or
* {@code null} to generate a random ContentID
* @param waitForRendezvous true to wait for rdv connection, false otherwise
*/
public ContentServer(File toServe, ContentID id, boolean waitForRendezvous) {
try {
manager = new NetworkManager(
NetworkManager.ConfigMode.ADHOC, "ContentClient",
new File(new File(".cache"), "ContentClient").toURI());
manager.startNetwork();
} catch (Exception e) {
e.printStackTrace();
System.exit(-1);
}
netPeerGroup = manager.getNetPeerGroup();
if (waitForRendezvous) {
manager.waitForRendezvousConnection(0);
}
file = toServe;
if (id == null) {
contentID = IDFactory.newContentID(
netPeerGroup.getPeerGroupID(), false);
} else {
contentID = id;
}
}
/**
* Interact with the server.
*/
public void run() {
try {
/*
* Get the PeerGroup's ContentService instance.
*/
ContentService service = netPeerGroup.getContentService();
/*
* Here we setup a Content object that we plan on sharing.
*/
System.out.println("Creating Content object");
System.out.println(" ID : " + contentID);
FileDocument fileDoc = new FileDocument(file, MimeMediaType.AOS);
Content content = new Content(contentID, null, fileDoc);
System.out.println(" Content: " + content);
/*
* Now we'll ask the ContentProvider implementations to share
* the Content object we just created. This single action may
* result in more than one way to share the object, so we get
* back a list of ContentShare objects. Pragmatically, we
* are likely to get one ContentShare per ContentProvider
* implementation, though this isn't necessarily true.
*/
List<ContentShare> shares = service.shareContent(content);
/*
* Now that we have some shares, we can advertise them so that
* other peers can access them. In this tutorial we are using
* the DiscoveryService to publish the advertisements for the
* ContentClient program to be able to discover them.
*/
DiscoveryService discoService = netPeerGroup.getDiscoveryService();
for (ContentShare share : shares) {
/*
* We'll attach a listener to the ContentShare so that we
* can see any activity relating to it.
*/
share.addContentShareListener(shareListener);
/*
* Each ContentShare has it's own Advertisement, so we publish
* them all.
*/
ContentShareAdvertisement adv = share.getContentShareAdvertisement();
discoService.publish(adv);
}
/*
* Wait forever, allowing peers to retrieve the shared Content
* until we terminate.
*/
System.out.println("Waiting for clients...");
synchronized(this) {
try {
wait();
} catch (InterruptedException intx) {
System.out.println("Interrupted");
}
}
System.out.println("Exiting");
} catch (IOException io) {
io.printStackTrace();
} finally {
stop();
}
}
/**
* If the java property RDVWAIT set to true then this demo
* will wait until a rendezvous connection is established before
* initiating a connection
*
* @param args none recognized.
*/
public static void main(String args[]) {
/*
System.setProperty("net.jxta.logging.Logging", "FINEST");
System.setProperty("net.jxta.level", "FINEST");
System.setProperty("java.util.logging.config.file", "logging.properties");
*/
if (args.length > 2) {
System.err.println("USAGE: ContentServer [File] [ContentID]");
System.exit(1);
}
try {
File file;
if (args.length > 0) {
file = new File(args[0]);
// Use the file specified
if (!file.exists()) {
System.err.println("ERROR: File '" + args[0] + "' does not exist");
System.exit(-1);
}
} else {
// Create and use a temporary file
file = File.createTempFile("ContentServer_", ".tmp");
FileWriter fileWriter = new FileWriter(file);
fileWriter.write("This is some test data for our demonstration Content");
fileWriter.close();
}
Thread.currentThread().setName(ContentServer.class.getName() + ".main()");
URI uri;
if (args.length == 2) {
uri = new URI(args[1]);
} else {
uri = new URI(DEFAULT_CONTENT_ID);
}
ContentID id = (ContentID) IDFactory.fromURI(uri);
String value = System.getProperty("RDVWAIT", "false");
boolean waitForRendezvous = Boolean.valueOf(value);
ContentServer socEx = new ContentServer(file, id, waitForRendezvous);
socEx.run();
} catch (Throwable e) {
System.out.flush();
System.err.println("Failed : " + e);
e.printStackTrace(System.err);
System.exit(-1);
}
}
///////////////////////////////////////////////////////////////////////////
// Private methods:
private void logEvent(String title, ContentProviderEvent event) {
System.out.println("ContentProviderEvent " + title);
System.out.println(" ContentID: " + event.getContentID());
System.out.println(" Provider : " + event.getContentProvider());
System.out.println(" Shares : " + event.getContentShares().size());
for (ContentShare share : event.getContentShares()) {
System.out.println(" " + share.toString());
}
}
private void logEvent(String title, ContentShareEvent event) {
System.out.println("ContentShareEvent - " + title);
System.out.println(" Source : " + event.getContentShare());
System.out.println(" Name : " + event.getRemoteName());
System.out.println(" Data Start: " + event.getDataStart());
System.out.println(" Data Size : " + event.getDataSize());
}
private void stop() {
manager.stopNetwork();
}
}