Java tutorial
/* * Copyright (c) 2011 Enrico Franchi, Michele Tomaiuolo and University of Parma. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package net.blogracy.services; import java.io.File; import java.io.InputStream; import java.net.MalformedURLException; import java.net.URL; import javax.jms.Connection; import javax.jms.DeliveryMode; import javax.jms.Destination; import javax.jms.JMSException; import javax.jms.Message; import javax.jms.MessageConsumer; import javax.jms.MessageListener; import javax.jms.MessageProducer; import javax.jms.Session; import javax.jms.TextMessage; import net.blogracy.logging.Logger; import org.gudy.azureus2.plugins.PluginInterface; import org.gudy.azureus2.plugins.download.Download; import org.gudy.azureus2.plugins.download.DownloadException; import org.gudy.azureus2.plugins.torrent.Torrent; import org.gudy.azureus2.plugins.torrent.TorrentException; import org.gudy.azureus2.plugins.utils.resourcedownloader.ResourceDownloader; import org.gudy.azureus2.plugins.utils.resourcedownloader.ResourceDownloaderException; import org.json.JSONException; import org.json.JSONObject; /** * User: mic * Package: it.unipr.aotlab.blogracy.services * Date: 10/27/11 * Time: 12:36 PM */ /** * ... */ public class DownloadService implements MessageListener { private PluginInterface plugin; private Session session; private Destination queue; private MessageProducer producer; private MessageConsumer consumer; public DownloadService(Connection connection, PluginInterface plugin) { this.plugin = plugin; try { session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); producer = session.createProducer(null); producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT); queue = session.createQueue("download"); consumer = session.createConsumer(queue); consumer.setMessageListener(this); } catch (JMSException e) { Logger.error("JMS error: creating download service"); } } @Override public void onMessage(Message request) { try { String text = ((TextMessage) request).getText(); Logger.info("download service:" + text + ";"); JSONObject entry = new JSONObject(text); try { URL magnetUri = new URL(entry.getString("uri")); File file = new File(entry.getString("file")); File folder = file.getParentFile(); Download download = null; ResourceDownloader rdl = plugin.getUtilities().getResourceDownloaderFactory().create(magnetUri); InputStream is = rdl.download(); Torrent torrent = plugin.getTorrentManager().createFromBEncodedInputStream(is); download = plugin.getDownloadManager().addDownload(torrent, null, folder); if (download != null && file != null) download.renameDownload(file.getName()); Logger.info(magnetUri + " added to download list"); } catch (ResourceDownloaderException e) { Logger.error("Torrent download error: download service: " + text); } catch (TorrentException e) { Logger.error("Torrent error: download service: " + text); } catch (DownloadException e) { Logger.error("File download error: download service: " + text); } catch (MalformedURLException e) { Logger.error("Malformed URL error: download service: " + text); } } catch (JMSException e) { Logger.error("JMS error: download service"); } catch (JSONException e) { e.printStackTrace(); } } }