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root/i-scream/projects/cms/source/server/uk/org/iscream/cms/server/client/alerters/IRC__Alerter.java

Comparing projects/cms/source/server/uk/org/iscream/cms/server/client/alerters/IRC__Alerter.java (file contents):
Revision 1.6 by tdb, Fri Mar 2 02:46:56 2001 UTC vs.
Revision 1.32 by tdb, Sat May 18 18:16:00 2002 UTC

#	Line 1 | Line 1
1	+	/*
2	+	* i-scream central monitoring system
3	+	* Copyright (C) 2000-2002 i-scream
4	+	*
5	+	* This program is free software; you can redistribute it and/or
6	+	* modify it under the terms of the GNU General Public License
7	+	* as published by the Free Software Foundation; either version 2
8	+	* of the License, or (at your option) any later version.
9	+	*
10	+	* This program is distributed in the hope that it will be useful,
11	+	* but WITHOUT ANY WARRANTY; without even the implied warranty of
12	+	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13	+	* GNU General Public License for more details.
14	+	*
15	+	* You should have received a copy of the GNU General Public License
16	+	* along with this program; if not, write to the Free Software
17	+	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18	+	*/
19	+
20		//---PACKAGE DECLARATION---
21	<	package uk.ac.ukc.iscream.client.alerters;
21	>	package uk.org.iscream.cms.server.client.alerters;
22
23		//---IMPORTS---
24	<	import uk.ac.ukc.iscream.client.*;
25	<	import uk.ac.ukc.iscream.core.*;
26	<	import uk.ac.ukc.iscream.util.*;
27	<	import uk.ac.ukc.iscream.componentmanager.*;
9	<
24	>	import uk.org.iscream.cms.server.client.*;
25	>	import uk.org.iscream.cms.server.core.*;
26	>	import uk.org.iscream.cms.server.util.*;
27	>	import uk.org.iscream.cms.server.componentmanager.*;
28		import java.io.*;
29		import java.net.*;
30	+	import java.util.*;
31	+	import java.text.DateFormat;
32	+	import org.jibble.pircbot.*;
33
34		/**
35		* This Alert sends an IRC message.
36		*
37	+	* Clean shutdown could be achieved by stopping the run() method in the
38	+	* IRCBot inner class.
39	+	*
40		* @author  $Author$
41		* @version $Id$
42		*/
43	<	public class IRC__Alerter implements PluginAlerter {
43	>	public class IRC__Alerter extends AlerterSkeleton {
44
45		//---FINAL ATTRIBUTES---
46
#	Line 25 | Line 49 | public class IRC__Alerter implements PluginAlerter {
49		*/
50		public final String REVISION = "$Revision$";
51
52	+	/**
53	+	* A description of this alerter
54	+	*/
55		public final String DESC = "Sends alerts on an IRC channel";
56
57		//---STATIC METHODS---
58
59		//---CONSTRUCTORS---
60	<
60	>
61		public IRC__Alerter() {
62	<	// get the configuration for this alerter
63	<	Configuration config = ReferenceManager.getInstance().getCM().getConfiguration(_name);
64	<
65	<	// an integer value
66	<	_level = Integer.parseInt(config.getProperty("Alerter.IRC.level"));
67	<	// the hostname of the IRC server
68	<	_IRCServer = config.getProperty("Alerter.IRC.IRCServer");
69	<	// the port number of the IRC server
70	<	_IRCPort = Integer.parseInt(config.getProperty("Alerter.IRC.IRCPort"));
71	<	// the nickname to use
45	<	_nick = config.getProperty("Alerter.IRC.nick");
46	<	// the channel to join
47	<	_channel = config.getProperty("Alerter.IRC.channel");
48	<	// a message with the following: %level% and %message%
49	<	_message = config.getProperty("Alerter.IRC.message");
50	<
51	<	// connect to the IRC server
52	<	_ircbot = null;
53	<	try {
54	<	_ircbot = new IRCBot();
55	<	_ircbot.connect();
56	<	_ircbot.sendNotice("iscreamBot activated");
57	<	} catch(IOException e) {
58	<	_logger.write(toString(), Logger.ERROR, "Error starting IRCBot: "+e);
59	<	}
60	<
62	>	super();
63	>	// construct and initialise the bot
64	>	_ircbot = new IRCBot();
65	>	_ircbot.setVerbose(false);
66	>	Thread ircThread = new Thread(_ircbot);
67	>	// set it's name and start it
68	>	ircThread.setName("client.IRC__Alerter$IRCBot");
69	>	ircThread.start();
70	>	// log our start time
71	>	_startTime = System.currentTimeMillis();
72		_logger.write(toString(), Logger.SYSINIT, "IRC Alerter started");
73		}
74
75		//---PUBLIC METHODS---
76
77	+	/**
78	+	* Implements the abstract method from the skeleton class.
79	+	* This method will attempt to send an alert
80	+	* message over the IRC channel.
81	+	*
82	+	* @param alert the alert to send
83	+	*/
84		public void sendAlert(Alert alert) {
85	<	// only send if it's equal (or above) our level
86	<	if(alert.getLevel() >= _level) {
87	<	String alertType = Alert.alerts[alert.getLevel()]+"["+String.valueOf(alert.getLevel())+"]";
88	<	// sort out the message
89	<	String message = _message;
90	<	message = StringUtils.replaceText(message, "%level%", alertType);
91	<	message = StringUtils.replaceText(message, "%source%", alert.getSource());
92	<	message = StringUtils.replaceText(message, "%value%", alert.getValue());
93	<	message = StringUtils.replaceText(message, "%thresholdValue%", alert.getThresholdValue());
94	<	message = StringUtils.replaceText(message, "%attributeName%", alert.getAttributeName());
95	<
85	>	// sort out the message
86	>	String alertType = Alert.alertLevels[alert.getLevel()];
87	>	String message;
88	>	try {
89	>	message = _cp.getProperty(_name, "Alerter.IRC.message");
90	>	} catch (PropertyNotFoundException e) {
91	>	message = NOT_CONFIGURED;
92	>	_logger.write(toString(), Logger.WARNING, "Alerter.IRC.message value unavailable using default of " + message);
93	>	}
94	>	message = processAlertMessage(message, alert);
95	>	// only send alerts if we're active
96	>	if(_active) {
97		// send the message
98	<	_logger.write(toString(), Logger.DEBUG, "Sending IRC Alert at level"+String.valueOf(alert.getLevel()));
99	<	_ircbot.sendMsg(message);
98	>	_logger.write(toString(), Logger.DEBUG, "Sending " + _name + " at "+ alertType + " level");
99	>	_ircbot.sendMessage(message);
100	>	// count sent alerts
101	>	_alertCount++;
102	>	} else {
103	>	// don't send, but keep a count that we ignored it
104	>	_ignoredCount++;
105		}
106	+	// we'll always store the "last alert", regardless
107	+	// of whether we actually display it or not
108	+	_lastAlert = message;
109	+	_lastAlertTime = System.currentTimeMillis();
110		}
111
112		/**
113		* Overrides the {@link java.lang.Object#toString() Object.toString()}
114		* method to provide clean logging (every class should have this).
115		*
116	<	* This uses the uk.ac.ukc.iscream.util.NameFormat class
116	>	* This uses the uk.org.iscream.cms.server.util.NameFormat class
117		* to format the toString()
118		*
119		* @return the name of this class and its CVS revision
#	Line 97 | Line 125 | public class IRC__Alerter implements PluginAlerter {
125		REVISION);
126		}
127
128	<	/**
129	<	* return the String representation of what the filter does
128	>	/**
129	>	* Return the String representation of what the alerter does
130	>	*
131	>	* @return the description
132		*/
133		public String getDescription(){
134		return DESC;
#	Line 108 | Line 138 | public class IRC__Alerter implements PluginAlerter {
138
139		//---ACCESSOR/MUTATOR METHODS---
140
141	<	//---ATTRIBUTES---
141	>	/**
142	>	* Returns the "friendly" name of this class. This
143	>	* is simply an accessor for _name, required due to
144	>	* inheritance issues with extending AlerterSkeleton.
145	>	*
146	>	* @return the friendly name
147	>	*/
148	>	protected String getFName() {
149	>	return _name;
150	>	}
151
152	<	// an integer value
114	<	private int _level;
152	>	//---ATTRIBUTES---
153
154	<	// the hostname of the IRC server
155	<	private String _IRCServer;
154	>	/**
155	>	* A reference to the IRCBot
156	>	*/
157	>	private IRCBot _ircbot;
158
159	<	// the port number of the IRC server
160	<	private int _IRCPort;
159	>	/**
160	>	* Are we "active"
161	>	*/
162	>	private boolean _active = false;
163
164	<	// the nickname to use
165	<	private String _nick;
164	>	/**
165	>	* The last alert that was sent
166	>	*/
167	>	private String _lastAlert = "no alerts have been sent";
168
169	<	// the channel to join
170	<	private String _channel;
169	>	/**
170	>	* The time of the last alert
171	>	*/
172	>	private long _lastAlertTime = -1;
173
174	<	// the ircbot
175	<	private IRCBot _ircbot;
174	>	/**
175	>	* Number of alerts sent
176	>	*/
177	>	private int _alertCount = 0;
178
179	<	// a message with the following: %level% and %message%
180	<	private String _message;
179	>	/**
180	>	* Number of alerts ignored when in "stopped" mode
181	>	*/
182	>	private int _ignoredCount = 0;
183
184		/**
185	+	* Time of IRCBot startup
186	+	*/
187	+	private long _startTime;
188	+
189	+	/**
190	+	* This holds a reference to the
191	+	* system logger that is being used.
192	+	*/
193	+	protected Logger _logger = ReferenceManager.getInstance().getLogger();
194	+
195	+	/**
196		* This is the friendly identifier of the
197		* component this class is running in.
198		* eg, a Filter may be called "filter1",
#	Line 140 | Line 201 | public class IRC__Alerter implements PluginAlerter {
201		* can be placed here.  This name could also
202		* be changed to null for utility classes.
203		*/
204	<	private String _name = ClientMain.NAME;
204	>	private String _name = "IRC";
205
145	–	/**
146	–	* This holds a reference to the
147	–	* system logger that is being used.
148	–	*/
149	–	private Logger _logger = ReferenceManager.getInstance().getLogger();
150	–
206		//---STATIC ATTRIBUTES---
207
208		//---INNER CLASSES---
209
210	<	/**
156	<	* This class provides some basic IRCBot functionality. It connects
157	<	* to a specified server, and will remain there until told to
158	<	* leave. Whilst connected it can send a message or a notice to
159	<	* the server.
160	<	*/
161	<	class IRCBot extends Thread {
210	>	class IRCBot extends PircBot implements Runnable {
211
212		/**
213	<	* Main thread loop, this part of the class listens for
165	<	* messages from the server, and acts accordingly. At the
166	<	* present moment it only responds to pings.
213	>	* The default reconnect delay in seconds
214		*/
215	+	public final int DEFAULT_RECONNECT_DELAY = 30;
216	+
217	+	/**
218	+	* Attempt to kick-start the IRCBot into action. Will
219	+	* keep calling init() until it doesn't throw an
220	+	* an IOException (which will only be thrown if there
221	+	* is an error initialising). After a successful call
222	+	* to init() the method finishes.
223	+	*/
224		public void run() {
225	<	// flag so we can stop the loop
170	<	boolean run = true;
171	<	while(run) {
225	>	while(true) {
226		try {
227	<	// read a command
228	<	String cmd = _socketIn.readLine();
175	<	// if it's a PING...
176	<	if(cmd.startsWith("PING")) {
177	<	// ...send a PONG
178	<	_socketOut.println("PONG" + cmd.substring(4));
179	<	}
180	<	} catch (IOException e) {
181	<	// comms failure, lets stop
182	<	_logger.write(this.toString(), Logger.ERROR, "Comms error: "+e);
183	<	//run = false;
227	>	init();
228	>	break;
229		}
230	+	catch (IOException e) {
231	+	_logger.write(this.toString(), Logger.ERROR, "Error initialising IRCBot: "+e);
232	+	// wait for a while, defined in the config
233	+	reconnectSleep();
234	+	}
235		}
236		}
237
238		/**
239	<	* Sends a message to the channel.
239	>	* Connects the bot to an irc server and joins a channel,
240	>	* using details supplied from the i-scream configuration
241	>	* system. If this method completes without an exception
242	>	* one can presume the bot is ready for use.
243		*
244	<	* @param msg The message to send
244	>	* @throws IOException if there is any problem initialising
245		*/
246	<	public void sendMsg(String msg) {
247	<	_socketOut.println("PRIVMSG "+_channel+" :"+msg);
246	>	private void init() throws IOException {
247	>	_logger.write(this.toString(), Logger.DEBUG, "Initialising IRCBot...");
248	>
249	>	// get a hook on the configuration system
250	>	ConfigurationProxy cp = ConfigurationProxy.getInstance();
251	>
252	>	// get hold of the server details
253	>	String server;
254	>	int port;
255	>	try {
256	>	server = cp.getProperty(_name, "Alerter.IRC.IRCServer");
257	>	port = Integer.parseInt(cp.getProperty(_name, "Alerter.IRC.IRCPort"));
258	>	} catch (PropertyNotFoundException e) {
259	>	_logger.write(this.toString(), Logger.ERROR, "Configuration error: "+e);
260	>	throw new IOException("Can't get irc server details due to configuration error");
261	>	} catch (NumberFormatException e) {
262	>	_logger.write(this.toString(), Logger.ERROR, "Configuration error: "+e);
263	>	throw new IOException("Can't get irc server details due to malformed configuration");
264	>	}
265	>
266	>	// get hold of the user details and nickname list
267	>	String user, nickList;
268	>	try {
269	>	user = cp.getProperty(_name, "Alerter.IRC.user");
270	>	nickList = cp.getProperty(_name, "Alerter.IRC.nickList");
271	>	} catch (PropertyNotFoundException e) {
272	>	_logger.write(this.toString(), Logger.ERROR, "Configuration error: "+e);
273	>	throw new IOException("Can't get user/nickname details due to configuration error");
274	>	}
275	>
276	>	// get hold of comment and finger information
277	>	//  -- we're not too fussed if these aren't set
278	>	String comment = "Alerter.IRC.comment is undefined";
279	>	String finger = "Alerter.IRC.finger is undefined";
280	>	try {
281	>	comment = cp.getProperty(_name, "Alerter.IRC.comment");
282	>	finger = cp.getProperty(_name, "Alerter.IRC.finger");
283	>	} catch (PropertyNotFoundException e) {
284	>	_logger.write(this.toString(), Logger.WARNING, "Configuration warning, using default: "+e);
285	>	}
286	>
287	>	// put these details into the bot
288	>	this.setLogin(user);
289	>	this.setVersion("[" + getRevision() + "] " + comment);
290	>	this.setFinger(finger);
291	>
292	>	// attempt to connect, trying each nickname
293	>	// in turn until sucessfully connected
294	>	StringTokenizer st = new StringTokenizer(nickList, ";");
295	>	boolean ok = false;
296	>	while(!ok && st.hasMoreTokens()) {
297	>	String nick = st.nextToken();
298	>	try {
299	>	// try to connect with a nickname
300	>	_logger.write(this.toString(), Logger.DEBUG, "Trying nick: "+nick);
301	>	this.setName(nick);
302	>	this.connect(server, port);
303	>	// at this point we know the nickname was accepted
304	>	_nickname = nick;
305	>	ok = true;
306	>	}
307	>	catch(IOException e) {
308	>	_logger.write(this.toString(), Logger.ERROR, "IO error when connecting to server: "+e);
309	>	throw new IOException("IO error when connecting to server");
310	>	}
311	>	catch(IrcException e) {
312	>	_logger.write(this.toString(), Logger.ERROR, "IRC error when connecting to server: "+e);
313	>	throw new IOException("IRC error when connecting to server");
314	>	}
315	>	catch(NickAlreadyInUseException e) {
316	>	_logger.write(this.toString(), Logger.ERROR, "Nickname "+nick+" is already in use: "+e);
317	>	// don't do anything, instead just loop round
318	>	// and try the next nickname in the list
319	>	}
320	>	}
321	>	if(!ok) {
322	>	// must have tried all the nicknames, best bail out
323	>	_logger.write(this.toString(), Logger.ERROR, "All nicknames already in use");
324	>	throw new IOException("All nicknames already in use");
325	>	}
326	>
327	>	// get hold of the channel details, and attempt
328	>	// to join the specified channel
329	>	try {
330	>	_channel = cp.getProperty(_name, "Alerter.IRC.channel");
331	>	this.joinChannel(_channel);
332	>	} catch (PropertyNotFoundException e) {
333	>	_logger.write(this.toString(), Logger.ERROR, "Configuration error: "+e);
334	>	throw new IOException("Can't get channel name due to configuration error");
335	>	}
336	>
337	>	// get hold of the startup notice, and send
338	>	// it if it's defined
339	>	String startupNotice;
340	>	try {
341	>	startupNotice = ConfigurationProxy.getInstance().getProperty(_name, "Alerter.IRC.startupNotice");
342	>	sendNotice(_channel, startupNotice);
343	>	} catch (PropertyNotFoundException e) {
344	>	_logger.write(this.toString(), Logger.DEBUG, "Startup notice not defined, so not sending: "+e);
345	>	}
346	>
347	>	// at this point initialisation is complete, so
348	>	// we can return and set this flag to allow alerts
349	>	_active = true;
350		}
351
352		/**
353	<	* Sends a notice to the channel.
353	>	* Send a message to the current channel.
354		*
355	<	* @param msg The notice to send
355	>	* @param message The message to send
356		*/
357	<	public void sendNotice(String msg) {
358	<	_socketOut.println("NOTICE "+_channel+" :"+msg);
357	>	private void sendMessage(String message) {
358	>	sendMessage(_channel, message);
359		}
360
361		/**
362	<	* Connect to the IRC server, log in, and join the channel.
362	>	* If we get disconnected this method will be
363	>	* called, so we must take action. We'll simply
364	>	* keep trying to reinitialise, and thus
365	>	* reconnect to the server.
366	>	*/
367	>	public void onDisconnect() {
368	>	// stop alerts being sent for now
369	>	_active = false;
370	>	while(true) {
371	>	// wait for a while, defined in the config
372	>	reconnectSleep();
373	>	try {
374	>	init();
375	>	break;
376	>	}
377	>	catch (IOException e) {
378	>	_logger.write(this.toString(), Logger.ERROR, "Error initialising IRCBot: "+e);
379	>	}
380	>	}
381	>	}
382	>
383	>	/**
384	>	* If we receive a message this method will
385	>	* be called. We'll check if the message is
386	>	* for us, and call handleInput if it is.
387		*
388	<	* @throws IOException if the connection fails
388	>	* @param channel The channel the message came from
389	>	* @param sender The sender of the message
390	>	* @param login The login of the sender
391	>	* @param hostname The hostname of the sender
392	>	* @param message The message sent
393		*/
394	<	public void connect() throws IOException {
395	<	// setup the socket, reader and writer
396	<	_socket = new Socket(_IRCServer, _IRCPort);
397	<	_socketIn = new BufferedReader(new InputStreamReader(_socket.getInputStream()));
398	<	_socketOut = new PrintWriter(_socket.getOutputStream(), true);
399	<	// send the various log in messages
217	<	_socketOut.println("PASS");
218	<	_socketOut.println("NICK "+_nick);
219	<	_socketOut.println("USER iscream 8 * :i-scream Bot");
220	<	// join the channel
221	<	_socketOut.println("JOIN "+_channel);
222	<	// start our listening thread
223	<	this.start();
394	>	public void onMessage(String channel, String sender, String login, String hostname, String message) {
395	>	String trimmedMessage = isForMe(message);
396	>	// if trimmedMessage is null, it's not for us
397	>	if(trimmedMessage != null) {
398	>	handleInput(trimmedMessage, channel);
399	>	}
400		}
401
402		/**
403	<	* Disconnect "nicely" from the IRC server.
403	>	* If we receive a private message this method
404	>	* will be called. No need to check if it's for
405	>	* us -- it has to be if it's a private message.
406		*
407	<	* @throws IOException if the disconnection fails
407	>	* @param sender The sender of the message
408	>	* @param login The login of the sender
409	>	* @param hostname The hostname of the sender
410	>	* @param message The message sent
411		*/
412	<	public void disconnect() throws IOException {
413	<	// send proper QUIT
233	<	_socketOut.println("QUIT : iscreamBot component shutting down...");
234	<	// close the socket
235	<	_socketOut.close();
236	<	_socketIn.close();
237	<	_socket.close();
412	>	public void onPrivateMessage(String sender, String login, String hostname, String message) {
413	>	handleInput(message, sender);
414		}
415	<
415	>
416		/**
417	<	* The socket connected to the server
417	>	* If we receive a nick change message, this
418	>	* method gets called. We don't care about
419	>	* other users changing their nick, so we only
420	>	* take notice if our nick changes. If it does
421	>	* we need to change our internal nickname
422	>	* state.
423	>	*
424	>	* @param oldNick the old nickname
425	>	* @param login the login of the nick changer
426	>	* @param hostname the hostname of the nick changer
427	>	* @param newNick the new nickname
428		*/
429	<	private Socket _socket;
429	>	public void onNickChange(String oldNick, String login, String hostname, String newNick) {
430	>	if(oldNick.equals(_nickname)) {
431	>	_nickname = newNick;
432	>	// tell the underlying pircbot that our nick has changed too :)
433	>	setName(newNick);
434	>	}
435	>	}
436
437		/**
438	<	* The writer
438	>	* If we receive a kick message this method
439	>	* gets called. We only take notice if it's
440	>	* us getting kicked, and then we'll rejoin
441	>	* the channel after a short wait.
442	>	*
443	>	* @param channel the channel the kick happened on
444	>	* @param kickerNick the person who performed the kick
445	>	* @param kickerLogin the login of the person who performed the kick
446	>	* @param kickerHostname the hostname of the person who performed the kick
447	>	* @param recipientNick the nickname of the person being kicked
448	>	* @param reason the reason for the kick
449		*/
450	<	private PrintWriter _socketOut;
450	>	public void onKick(String channel, String kickerNick, String kickerLogin, String kickerHostname, String recipientNick, String reason) {
451	>	if(recipientNick.equals(_nickname) && channel.equals(_channel)) {
452	>	// remind the person it's not very nice :)
453	>	sendMessage(kickerNick, "That wasn't a nice thing to do...");
454	>	// get hold of the channel details, in case they've changed
455	>	try {
456	>	_channel = ConfigurationProxy.getInstance().getProperty(_name, "Alerter.IRC.channel");
457	>	} catch(PropertyNotFoundException e) {
458	>	_logger.write(this.toString(), Logger.ERROR, "Can't get channel name due to configuration error: "+e);
459	>	}
460	>	// wait for a while, defined in the config
461	>	reconnectSleep();
462	>	// we'll try and rejoin the channel regardless
463	>	// otherwise we might end up doing nothing!
464	>	joinChannel(_channel);
465	>	}
466	>	}
467
468		/**
469	<	* The reader
469	>	* This method handles input directed to us, and
470	>	* responds accordingly if required.
471	>	*
472	>	* @param message the message from someone
473	>	* @param source where the message came from, so we know where to send the response
474		*/
475	<	private BufferedReader _socketIn;
475	>	private void handleInput(String message, String source) {
476	>	// get hold of the configuration system
477	>	ConfigurationProxy cp = ConfigurationProxy.getInstance();
478	>	// setup some String's
479	>	String stopCommand, startCommand, timeSinceLastAlertCommand, lastAlertCommand, joinCommand;
480	>	String nickChangeCommand, versionCommand, helpCommand, statCommand, uptimeCommand;
481	>	// get the command set from the configuration
482	>	try {
483	>	stopCommand = cp.getProperty(_name, "Alerter.IRC.stopCommand");
484	>	startCommand = cp.getProperty(_name, "Alerter.IRC.startCommand");
485	>	timeSinceLastAlertCommand = cp.getProperty(_name, "Alerter.IRC.timeSinceLastAlertCommand");
486	>	lastAlertCommand = cp.getProperty(_name, "Alerter.IRC.lastAlertCommand");
487	>	joinCommand = cp.getProperty(_name, "Alerter.IRC.joinCommand");
488	>	nickChangeCommand = cp.getProperty(_name, "Alerter.IRC.nickChangeCommand");
489	>	versionCommand = cp.getProperty(_name, "Alerter.IRC.versionCommand");
490	>	helpCommand = cp.getProperty(_name, "Alerter.IRC.helpCommand");
491	>	statCommand = cp.getProperty(_name, "Alerter.IRC.statCommand");
492	>	uptimeCommand = cp.getProperty(_name, "Alerter.IRC.uptimeCommand");
493	>	} catch (PropertyNotFoundException e) {
494	>	_logger.write(this.toString(), Logger.ERROR, "Configuration error: "+e);
495	>	// lets bail from handling this line...
496	>	// ...it's gonna be hard without a command set!
497	>	return;
498	>	}
499	>
500	>	if(message.equalsIgnoreCase(stopCommand)) {
501	>	_active = false;
502	>	sendMessage(source, "alerts have been stopped");
503	>	}
504	>	else if(message.equalsIgnoreCase(startCommand)) {
505	>	_active = true;
506	>	sendMessage(source, "alerts have been activated");
507	>	}
508	>	// this needs to go before lastAlertCommand if it contains
509	>	// the same words as the lastAlertCommand.
510	>	else if(message.equalsIgnoreCase(timeSinceLastAlertCommand)) {
511	>	if(_lastAlertTime != -1) {
512	>	long uptime = (System.currentTimeMillis() - _lastAlertTime) / 1000;
513	>	String uptimeText = DateUtils.formatTime(uptime, "%DAYS% days, %HOURS% hours, %MINS% mins, and %SECS% secs");
514	>	sendMessage(source, "I last sent an alert "+uptimeText+ " ago");
515	>	}
516	>	else {
517	>	sendMessage(source, "I've never sent an alert!");
518	>	}
519	>	}
520	>	else if(message.equalsIgnoreCase(lastAlertCommand)) {
521	>	if(_lastAlertTime != -1) {
522	>	String date = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, Locale.UK).format(new Date(_lastAlertTime));
523	>	sendMessage(source, "last alert was at "+date+"; "+_lastAlert);
524	>	}
525	>	else {
526	>	sendMessage(source, "I've never sent an alert!");
527	>	}
528	>
529	>	}
530	>	else if(message.toLowerCase().startsWith(joinCommand.toLowerCase())) {
531	>	String joinCmd = joinCommand;
532	>	String newChan = message.substring(message.indexOf(joinCmd) + joinCmd.length() + 1);
533	>	int endOfChan = newChan.indexOf(" ");
534	>	if(endOfChan == -1) {
535	>	endOfChan = newChan.length();
536	>	}
537	>	newChan = newChan.substring(0, endOfChan);
538	>	if(newChan.equals(_channel)) {
539	>	sendMessage(source, "I'm already on "+newChan+"!");
540	>	} else {
541	>	partChannel(_channel);
542	>	joinChannel(newChan);
543	>	_channel = newChan;
544	>	}
545	>	}
546	>	else if(message.toLowerCase().startsWith(nickChangeCommand.toLowerCase())) {
547	>	String nickChangeCmd = nickChangeCommand;
548	>	String newNick = message.substring(message.indexOf(nickChangeCmd) + nickChangeCmd.length() + 1);
549	>	int endOfNick = newNick.indexOf(" ");
550	>	if(endOfNick == -1) {
551	>	endOfNick = newNick.length();
552	>	}
553	>	newNick = newNick.substring(0, endOfNick);
554	>	changeNick(newNick);
555	>	}
556	>	else if(message.equalsIgnoreCase(versionCommand)) {
557	>	sendMessage(source, "I am version " + getRevision() + " of the i-scream alerting bot");
558	>	}
559	>	else if(message.equalsIgnoreCase(helpCommand)) {
560	>	sendMessage(source, "Hello, I am the i-scream alerting bot version "+REVISION.substring(11, REVISION.length() -2));
561	>	sendMessage(source, "I understand the following commands;");
562	>	sendMessage(source, stopCommand);
563	>	sendMessage(source, startCommand);
564	>	sendMessage(source, lastAlertCommand);
565	>	sendMessage(source, joinCommand);
566	>	sendMessage(source, nickChangeCommand);
567	>	sendMessage(source, statCommand);
568	>	sendMessage(source, uptimeCommand);
569	>	sendMessage(source, timeSinceLastAlertCommand);
570	>	sendMessage(source, helpCommand);
571	>	}
572	>	else if(message.equalsIgnoreCase(statCommand)) {
573	>	sendMessage(source, "I have sent a total of "+_alertCount+" alerts, and ignored a total of "+_ignoredCount+"!");
574	>	}
575	>	else if(message.equalsIgnoreCase(uptimeCommand)) {
576	>	long uptime = (System.currentTimeMillis() - _startTime) / 1000;
577	>	String uptimeText = DateUtils.formatTime(uptime, "%DAYS% days, %HOURS% hours, %MINS% mins, and %SECS% secs");
578	>	sendMessage(source, "I have been running for "+uptimeText);
579	>	}
580	>	else if(message.equalsIgnoreCase("ping")) {
581	>	sendMessage(source, "pong");
582	>	}
583	>	else if(message.equalsIgnoreCase("do a jibble dance")) {
584	>	// little joke :)
585	>	sendAction(source, "jives to the funky beat shouting \"ii--screeeaaammm\"");
586	>	}
587	>	else {
588	>	String rejectMessage = NOT_CONFIGURED;
589	>	try {
590	>	rejectMessage = cp.getProperty(_name, "Alerter.IRC.rejectMessage");
591	>	} catch(PropertyNotFoundException e) {
592	>	_logger.write(this.toString(), Logger.ERROR, "Configuration error: "+e);
593	>	}
594	>	sendMessage(source, rejectMessage);
595	>	}
596	>	}
597	>
598	>	/**
599	>	* Quick method to check if the message appears
600	>	* to be directed at us. We simply check to see
601	>	* if it starts with our nick in some fashion.
602	>	* This will return null if the message is not
603	>	* for us - thus allowing this method to perform
604	>	* two tasks at once.
605	>	*
606	>	* @param message the message to check
607	>	* @return the message (with our nick removed), or null if it's not for us.
608	>	*/
609	>	private String isForMe(String message) {
610	>	// change to lower case to remove
611	>	// case ambiguities
612	>	String nick = _nickname.toLowerCase();
613	>	String msg = message.toLowerCase();
614	>	if(msg.startsWith(nick + ", ") ||
615	>	msg.startsWith(nick + ": ") ||
616	>	msg.startsWith(nick + " ")) {
617	>	// NOTE that the 1 here is hardcoded to be the length
618	>	// of the above 'extra' character (eg , or :)
619	>	return message.substring(nick.length()+1).trim();
620	>	}
621	>	else {
622	>	return null;
623	>	}
624	>	}
625	>
626	>	/**
627	>	* Sleep for a configurable amount of time and
628	>	* then return. This is used when reconnecting
629	>	* to the server or a channel.
630	>	*/
631	>	private void reconnectSleep() {
632	>	int delayTime = 0;
633	>	try {
634	>	delayTime = Integer.parseInt(ConfigurationProxy.getInstance().getProperty(_name, "Alerter.IRC.reconnectDelay"));
635	>	} catch (NumberFormatException e) {
636	>	delayTime = DEFAULT_RECONNECT_DELAY;
637	>	_logger.write(this.toString(), Logger.WARNING, "Erronous Alerter.IRC.reconnectDelay value in configuration using default of " + delayTime + " seconds");
638	>	} catch (PropertyNotFoundException e) {
639	>	delayTime = DEFAULT_RECONNECT_DELAY;
640	>	_logger.write(this.toString(), Logger.WARNING, "Alerter.IRC.reconnectDelay value unavailable using default of " + delayTime + " seconds");
641	>	}
642	>	_logger.write(this.toString(), Logger.ERROR, "Waiting "+delayTime+" seconds for reconnect...");
643	>	try {
644	>	Thread.sleep(delayTime * 1000);
645	>	} catch (InterruptedException e) {}
646	>	}
647	>
648	>	/**
649	>	* Returns the revision of the bot.
650	>	*
651	>	* @return the revision of this bot
652	>	*/
653	>	private String getRevision() {
654	>	return REVISION.substring(11, REVISION.length()-2);
655	>	}
656	>
657	>	/**
658	>	* Overrides the {@link java.lang.Object#toString() Object.toString()}
659	>	* method to provide clean logging (every class should have this).
660	>	*
661	>	* This uses the uk.org.iscream.cms.server.util.NameFormat class
662	>	* to format the toString()
663	>	*
664	>	* @return the name of this class and its CVS revision
665	>	*/
666	>	public String toString() {
667	>	return FormatName.getName(
668	>	_name,
669	>	getClass().getName(),
670	>	REVISION);
671	>	}
672	>
673	>	/**
674	>	* Just a reminder to what channel we're on...
675	>	* this can't be dynamic :)
676	>	*/
677	>	private String _channel;
678	>
679	>	/**
680	>	* A reminder of our current nickname...
681	>	*/
682	>	private String _nickname;
683
684		}
685

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