/*
* 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.IOException;
import java.io.InputStream;
import java.net.InetSocketAddress;
import java.net.MalformedURLException;
import java.net.Proxy;
import java.net.URL;
import java.util.logging.FileHandler;
import java.util.logging.SimpleFormatter;
import java.util.Scanner;
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.i2p.I2PHelper;
import net.blogracy.logging.Logger;
import org.gudy.azureus2.core3.config.COConfigurationManager;
import org.gudy.azureus2.plugins.PluginInterface;
import org.gudy.azureus2.plugins.ddb.DistributedDatabase;
import org.gudy.azureus2.plugins.ddb.DistributedDatabaseEvent;
import org.gudy.azureus2.plugins.ddb.DistributedDatabaseException;
import org.gudy.azureus2.plugins.ddb.DistributedDatabaseListener;
import org.json.JSONException;
import org.json.JSONObject;
/**
* User: mic
* Package: net.blogracy.services
* Date: 10/27/11
* Time: 12:36 PM
*/
/**
* ...
*/
public class LookupService implements MessageListener {
class DhtListener implements DistributedDatabaseListener {
private TextMessage request;
DhtListener(TextMessage request) {
this.request = request;
}
public void event(DistributedDatabaseEvent event) {
int type = event.getType();
if (type == DistributedDatabaseEvent.ET_OPERATION_COMPLETE) {
// ...
} else if (type == DistributedDatabaseEvent.ET_OPERATION_TIMEOUT) {
// ...
} else if (type == DistributedDatabaseEvent.ET_VALUE_READ) {
String value = null;
try {
value = (String) event.getValue().getValue(String.class);
JSONObject record = new JSONObject(request.getText());
record.put("value", value);
Logger.info("lookup record received: " + record.getString("id"));
TextMessage response = session.createTextMessage();
response.setText(record.toString());
response.setJMSCorrelationID(request.getJMSCorrelationID());
producer.send(request.getJMSReplyTo(), response);
} catch (JMSException e) {
Logger.error("JMS error: lookup " + value);
} catch (DistributedDatabaseException e) {
Logger.error("DDB error: lookup " + value);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}
private PluginInterface plugin;
private Session session;
private Destination queue;
private MessageProducer producer;
private MessageConsumer consumer;
public LookupService(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("lookup");
consumer = session.createConsumer(queue);
consumer.setMessageListener(this);
} catch (JMSException e) {
Logger.error("JMS error: creating lookup service");
}
}
@Override
public void onMessage(final Message request) {
String text = null;
try {
TextMessage textRequest = (TextMessage) request;
text = textRequest.getText();
Logger.info("lookup service:" + text + ";");
JSONObject record = new JSONObject(text);
if (I2PHelper.isEnabled()) {
String value = I2PHelper.lookup(record.getString("id"));
if (value != null && value.length() > 10) {
record.put("value", value);
Logger.info("lookup record received: " + record.getString("id"));
TextMessage response = session.createTextMessage();
response.setText(record.toString());
response.setJMSCorrelationID(request.getJMSCorrelationID());
producer.send(request.getJMSReplyTo(), response);
}
} else {
final long TIMEOUT = 5 * 60 * 1000; // 5 mins
DistributedDatabase ddb = plugin.getDistributedDatabase();
ddb.read(new DhtListener(textRequest),
ddb.createKey(record.getString("id")), TIMEOUT,
DistributedDatabase.OP_EXHAUSTIVE_READ);
}
} catch (DistributedDatabaseException e) {
Logger.error("DDB error: lookup service: " + text);
} catch (JMSException e) {
Logger.error("JMS error: lookup service: " + text);
} catch (JSONException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
}