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/*
Copyright Paul James Mutton, 2001-2009, http://www.jibble.org/
This file is part of PircBot.
This software is dual-licensed, allowing you to choose between the GNU
General Public License (GPL) and the www.jibble.org Commercial License.
Since the GPL may be too restrictive for use in a proprietary application,
a commercial license is also provided. Full license information can be
found at http://www.jibble.org/licenses/
*/
package org.jibble.pircbot;
import java.io.BufferedWriter;
/**
* A Thread which is responsible for sending messages to the IRC server.
* Messages are obtained from the outgoing message queue and sent
* immediately if possible. If there is a flood of messages, then to
* avoid getting kicked from a channel, we put a small delay between
* each one.
*
* @author Paul James Mutton,
* <a href="http://www.jibble.org/">http://www.jibble.org/</a>
* @version 1.5.0 (Build time: Mon Dec 14 20:07:17 2009)
*/
public class OutputThread extends Thread {
/**
* Constructs an OutputThread for the underlying PircBot. All messages
* sent to the IRC server are sent by this OutputThread to avoid hammering
* the server. Messages are sent immediately if possible. If there are
* multiple messages queued, then there is a delay imposed.
*
* @param bot The underlying PircBot instance.
* @param outQueue The Queue from which we will obtain our messages.
*/
OutputThread(PircBot bot, Queue outQueue) {
_bot = bot;
_outQueue = outQueue;
this.setName(this.getClass() + "-Thread");
}
/**
* A static method to write a line to a BufferedOutputStream and then pass
* the line to the log method of the supplied PircBot instance.
*
* @param bot The underlying PircBot instance.
* @param out The BufferedOutputStream to write to.
* @param line The line to be written. "\r\n" is appended to the end.
* @param encoding The charset to use when encoing this string into a
* byte array.
*/
static void sendRawLine(PircBot bot, BufferedWriter bwriter, String line) {
if (line.length() > bot.getMaxLineLength() - 2) {
line = line.substring(0, bot.getMaxLineLength() - 2);
}
synchronized(bwriter) {
try {
bwriter.write(line + "\r\n");
bwriter.flush();
bot.log(">>>" + line);
}
catch (Exception e) {
// Silent response - just lose the line.
}
}
}
/**
* This method starts the Thread consuming from the outgoing message
* Queue and sending lines to the server.
*/
public void run() {
try {
boolean running = true;
while (running) {
// Small delay to prevent spamming of the channel
Thread.sleep(_bot.getMessageDelay());
String line = (String) _outQueue.next();
if (line != null) {
_bot.sendRawLine(line);
}
else {
running = false;
}
}
}
catch (InterruptedException e) {
// Just let the method return naturally...
}
}
private PircBot _bot = null;
private Queue _outQueue = null;
}
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