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root/i-scream/projects/cms/source/server/uk/org/iscream/cms/server/client/alerters/IRC__Alerter.java
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Comparing projects/cms/source/server/uk/org/iscream/cms/server/client/alerters/IRC__Alerter.java (file contents):
Revision 1.5 by tdb, Fri Mar 2 01:32:09 2001 UTC vs.
Revision 1.30.2.3 by tdb, Tue Feb 5 18:00:15 2002 UTC

# Line 1 | Line 1
1   //---PACKAGE DECLARATION---
2 < package uk.ac.ukc.iscream.client.alerters;
2 > package uk.org.iscream.cms.server.client.alerters;
3  
4   //---IMPORTS---
5 < import uk.ac.ukc.iscream.client.*;
6 < import uk.ac.ukc.iscream.core.*;
7 < import uk.ac.ukc.iscream.util.*;
8 < import uk.ac.ukc.iscream.componentmanager.*;
9 <
5 > import uk.org.iscream.cms.server.client.*;
6 > import uk.org.iscream.cms.server.core.*;
7 > import uk.org.iscream.cms.server.util.*;
8 > import uk.org.iscream.cms.server.componentmanager.*;
9   import java.io.*;
10   import java.net.*;
11 + import java.util.*;
12 + import java.text.DateFormat;
13 + import org.jibble.pircbot.*;
14  
15   /**
16   * This Alert sends an IRC message.
17   *
18 + * Clean shutdown could be achieved by stopping the run() method in the
19 + * IRCBot inner class.
20 + *
21   * @author  $Author$
22   * @version $Id$
23   */
24 < public class IRC__Alerter implements PluginAlerter {
24 > public class IRC__Alerter extends AlerterSkeleton {
25  
26   //---FINAL ATTRIBUTES---
27  
# Line 25 | Line 30 | public class IRC__Alerter implements PluginAlerter {
30       */
31      public final String REVISION = "$Revision$";
32      
33 +    /**
34 +     * A description of this alerter
35 +     */
36      public final String DESC = "Sends alerts on an IRC channel";
37      
38   //---STATIC METHODS---
39  
40   //---CONSTRUCTORS---
41 <
41 >    
42      public IRC__Alerter() {
43 <        // get the configuration for this alerter
44 <        Configuration config = ReferenceManager.getInstance().getCM().getConfiguration(_name);
45 <              
46 <        // an integer value
47 <        _level = Integer.parseInt(config.getProperty("Alerter.IRC.level"));
48 <        // the hostname of the IRC server
49 <        _IRCServer = config.getProperty("Alerter.IRC.IRCServer");
50 <        // the port number of the IRC server
51 <        _IRCPort = Integer.parseInt(config.getProperty("Alerter.IRC.IRCPort"));
52 <        // 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 <        
43 >        super();
44 >        // construct and initialise the bot
45 >        _ircbot = new IRCBot();
46 >        _ircbot.setVerbose(false);
47 >        Thread ircThread = new Thread(_ircbot);
48 >        // set it's name and start it
49 >        ircThread.setName("client.IRC__Alerter$IRCBot");
50 >        ircThread.start();
51 >        // log our start time
52 >        _startTime = System.currentTimeMillis();
53          _logger.write(toString(), Logger.SYSINIT, "IRC Alerter started");
54      }
55  
56   //---PUBLIC METHODS---
57  
58 +    /**
59 +     * Implements the abstract method from the skeleton class.
60 +     * This method will attempt to send an alert
61 +     * message over the IRC channel.
62 +     *
63 +     * @param alert the alert to send
64 +     */
65      public void sendAlert(Alert alert) {
66 <        // only send if it's equal (or above) our level
67 <        if(alert.getLevel() >= _level) {
68 <            // sort out the message
69 <            String message = _message;
70 <            message = StringUtils.replaceText(message, "%level%", String.valueOf(alert.getLevel()));
71 <            message = StringUtils.replaceText(message, "%source%", alert.getSource());
72 <            message = StringUtils.replaceText(message, "%value%", alert.getValue());
73 <            message = StringUtils.replaceText(message, "%thresholdValue%", alert.getThresholdValue());
74 <            message = StringUtils.replaceText(message, "%attributeName%", alert.getAttributeName());
75 <            
66 >        // sort out the message      
67 >        String alertType = Alert.alertLevels[alert.getLevel()];        
68 >        String message;
69 >        try {
70 >            message = _cp.getProperty(_name, "Alerter.IRC.message");
71 >        } catch (PropertyNotFoundException e) {
72 >            message = NOT_CONFIGURED;
73 >            _logger.write(toString(), Logger.WARNING, "Alerter.IRC.message value unavailable using default of " + message);
74 >        }
75 >        message = processAlertMessage(message, alert);        
76 >        // only send alerts if we're active
77 >        if(_active) {          
78              // send the message
79 <            _logger.write(toString(), Logger.DEBUG, "Sending IRC Alert at level"+String.valueOf(alert.getLevel()));
80 <            _ircbot.sendMsg(message);
79 >            _logger.write(toString(), Logger.DEBUG, "Sending " + _name + " at "+ alertType + " level");
80 >            _ircbot.sendMessage(message);
81 >            // count sent alerts
82 >            _alertCount++;
83 >        } else {
84 >            // don't send, but keep a count that we ignored it
85 >            _ignoredCount++;
86          }
87 +        // we'll always store the "last alert", regardless
88 +        // of whether we actually display it or not
89 +        _lastAlert = message;
90 +        _lastAlertTime = System.currentTimeMillis();
91      }
92  
93      /**
94       * Overrides the {@link java.lang.Object#toString() Object.toString()}
95       * method to provide clean logging (every class should have this).
96       *
97 <     * This uses the uk.ac.ukc.iscream.util.NameFormat class
97 >     * This uses the uk.org.iscream.cms.server.util.NameFormat class
98       * to format the toString()
99       *
100       * @return the name of this class and its CVS revision
# Line 96 | Line 106 | public class IRC__Alerter implements PluginAlerter {
106              REVISION);
107      }
108  
109 <    /**
110 <     * return the String representation of what the filter does
109 >    /**
110 >     * Return the String representation of what the alerter does
111 >     *
112 >     * @return the description
113       */
114      public String getDescription(){
115          return DESC;
# Line 107 | Line 119 | public class IRC__Alerter implements PluginAlerter {
119  
120   //---ACCESSOR/MUTATOR METHODS---
121  
122 < //---ATTRIBUTES---
122 >    /**
123 >     * Returns the "friendly" name of this class. This
124 >     * is simply an accessor for _name, required due to
125 >     * inheritance issues with extending AlerterSkeleton.
126 >     *
127 >     * @return the friendly name
128 >     */
129 >    protected String getFName() {
130 >        return _name;
131 >    }
132  
133 <    // an integer value
113 <    private int _level;
133 > //---ATTRIBUTES---
134      
135 <    // the hostname of the IRC server
136 <    private String _IRCServer;
135 >    /**
136 >     * A reference to the IRCBot
137 >     */
138 >    private IRCBot _ircbot;
139      
140 <    // the port number of the IRC server
141 <    private int _IRCPort;
140 >    /**
141 >     * Are we "active"
142 >     */
143 >    private boolean _active = false;
144      
145 <    // the nickname to use
146 <    private String _nick;
145 >    /**
146 >     * The last alert that was sent
147 >     */
148 >    private String _lastAlert = "no alerts have been sent";
149      
150 <    // the channel to join
151 <    private String _channel;
150 >    /**
151 >     * The time of the last alert
152 >     */
153 >    private long _lastAlertTime = -1;
154      
155 <    // the ircbot
156 <    private IRCBot _ircbot;
155 >    /**
156 >     * Number of alerts sent
157 >     */
158 >    private int _alertCount = 0;
159      
160 <    // a message with the following: %level% and %message%
161 <    private String _message;
160 >    /**
161 >     * Number of alerts ignored when in "stopped" mode
162 >     */
163 >    private int _ignoredCount = 0;
164      
165      /**
166 +     * Time of IRCBot startup
167 +     */
168 +    private long _startTime;
169 +    
170 +    /**
171 +     * This holds a reference to the
172 +     * system logger that is being used.
173 +     */
174 +    protected Logger _logger = ReferenceManager.getInstance().getLogger();
175 +    
176 +    /**
177       * This is the friendly identifier of the
178       * component this class is running in.
179       * eg, a Filter may be called "filter1",
# Line 139 | Line 182 | public class IRC__Alerter implements PluginAlerter {
182       * can be placed here.  This name could also
183       * be changed to null for utility classes.
184       */
185 <    private String _name = ClientMain.NAME;
185 >    private String _name = "IRC";
186  
144    /**
145     * This holds a reference to the
146     * system logger that is being used.
147     */
148    private Logger _logger = ReferenceManager.getInstance().getLogger();
149
187   //---STATIC ATTRIBUTES---
188  
189   //---INNER CLASSES---
190  
191 <    /**
155 <     * This class provides some basic IRCBot functionality. It connects
156 <     * to a specified server, and will remain there until told to
157 <     * leave. Whilst connected it can send a message or a notice to
158 <     * the server.
159 <     */
160 <    class IRCBot extends Thread {
191 >    class IRCBot extends PircBot implements Runnable {
192          
193          /**
194 <         * Main thread loop, this part of the class listens for
164 <         * messages from the server, and acts accordingly. At the
165 <         * present moment it only responds to pings.
194 >         * The default reconnect delay in seconds
195           */
196 +        public final int DEFAULT_RECONNECT_DELAY = 30;
197 +        
198 +        /**
199 +         * Attempt to kick-start the IRCBot into action. Will
200 +         * keep calling init() until it doesn't throw an
201 +         * an IOException (which will only be thrown if there
202 +         * is an error initialising). After a successful call
203 +         * to init() the method finishes.
204 +         */
205          public void run() {
206 <            // flag so we can stop the loop
169 <            boolean run = true;
170 <            while(run) {
206 >            while(true) {
207                  try {
208 <                    // read a command
209 <                    String cmd = _socketIn.readLine();
174 <                    // if it's a PING...
175 <                    if(cmd.startsWith("PING")) {
176 <                        // ...send a PONG
177 <                        _socketOut.println("PONG" + cmd.substring(4));
178 <                    }
179 <                } catch (IOException e) {
180 <                    // comms failure, lets stop
181 <                    _logger.write(this.toString(), Logger.ERROR, "Comms error: "+e);
182 <                    //run = false;
208 >                    init();
209 >                    break;
210                  }
211 +                catch (IOException e) {
212 +                    _logger.write(this.toString(), Logger.ERROR, "Error initialising IRCBot: "+e);
213 +                    // wait for a while, defined in the config
214 +                    reconnectSleep();
215 +                }
216              }
217          }
218          
219          /**
220 <         * Sends a message to the channel.
220 >         * Connects the bot to an irc server and joins a channel,
221 >         * using details supplied from the i-scream configuration
222 >         * system. If this method completes without an exception
223 >         * one can presume the bot is ready for use.
224           *
225 <         * @param msg The message to send
225 >         * @throws IOException if there is any problem initialising
226           */
227 <        public void sendMsg(String msg) {
228 <            _socketOut.println("PRIVMSG "+_channel+" :"+msg);
227 >        public void init() throws IOException {
228 >            _logger.write(this.toString(), Logger.DEBUG, "Initialising IRCBot...");
229 >            
230 >            // get a hook on the configuration system
231 >            ConfigurationProxy cp = ConfigurationProxy.getInstance();
232 >            
233 >            // get hold of the server details
234 >            String server;
235 >            int port;
236 >            try {
237 >                server = cp.getProperty(_name, "Alerter.IRC.IRCServer");
238 >                port = Integer.parseInt(cp.getProperty(_name, "Alerter.IRC.IRCPort"));
239 >            } catch (PropertyNotFoundException e) {
240 >                _logger.write(this.toString(), Logger.ERROR, "Configuration error: "+e);
241 >                throw new IOException("Can't get irc server details due to configuration error");
242 >            } catch (NumberFormatException e) {
243 >                _logger.write(this.toString(), Logger.ERROR, "Configuration error: "+e);
244 >                throw new IOException("Can't get irc server details due to malformed configuration");
245 >            }
246 >            
247 >            // get hold of the user details and nickname list
248 >            String user, comment, finger, nickList;
249 >            try {
250 >                user = cp.getProperty(_name, "Alerter.IRC.user");
251 >                comment = cp.getProperty(_name, "Alerter.IRC.comment");
252 >                finger = cp.getProperty(_name, "Alerter.IRC.finger");
253 >                nickList = cp.getProperty(_name, "Alerter.IRC.nickList");
254 >            } catch (PropertyNotFoundException e) {
255 >                _logger.write(this.toString(), Logger.ERROR, "Configuration error: "+e);
256 >                throw new IOException("Can't get user/nickname details due to configuration error");
257 >            }
258 >            
259 >            // put these details into the bot
260 >            this.setLogin(user);
261 >            this.setVersion(comment);
262 >            this.setFinger(finger);
263 >            
264 >            // attempt to connect, trying each nickname
265 >            // in turn until sucessfully connected
266 >            StringTokenizer st = new StringTokenizer(nickList, ";");
267 >            boolean ok = false;
268 >            while(!ok && st.hasMoreTokens()) {
269 >                String nick = st.nextToken();
270 >                try {
271 >                    // try to connect with a nickname
272 >                    _logger.write(this.toString(), Logger.DEBUG, "Trying nick: "+nick);
273 >                    this.setName(nick);
274 >                    this.connect(server, port);
275 >                    // at this point we know the nickname was accepted
276 >                    _nickname = nick;
277 >                    ok = true;
278 >                }
279 >                catch(IOException e) {
280 >                    _logger.write(this.toString(), Logger.ERROR, "IO error when connecting to server: "+e);
281 >                    throw new IOException("IO error when connecting to server");
282 >                }
283 >                catch(IrcException e) {
284 >                    _logger.write(this.toString(), Logger.ERROR, "IRC error when connecting to server: "+e);
285 >                    throw new IOException("IRC error when connecting to server");
286 >                }
287 >                catch(NickAlreadyInUseException e) {
288 >                    _logger.write(this.toString(), Logger.ERROR, "Nickname "+nick+" is already in use: "+e);
289 >                    // don't do anything, instead just loop round
290 >                    // and try the next nickname in the list
291 >                }
292 >            }
293 >            if(!ok) {
294 >                // must have tried all the nicknames, best bail out
295 >                _logger.write(this.toString(), Logger.ERROR, "All nicknames already in use");
296 >                throw new IOException("All nicknames already in use");
297 >            }
298 >            
299 >            // get hold of the channel details, and attempt
300 >            // to join the specified channel
301 >            try {
302 >                _channel = cp.getProperty(_name, "Alerter.IRC.channel");
303 >                this.joinChannel(_channel);
304 >            } catch (PropertyNotFoundException e) {
305 >                _logger.write(this.toString(), Logger.ERROR, "Configuration error: "+e);
306 >                throw new IOException("Can't get channel name due to configuration error");
307 >            }
308 >            
309 >            // get hold of the startup notice, and send
310 >            // it if it's defined
311 >            String startupNotice;
312 >            try {
313 >                startupNotice = ConfigurationProxy.getInstance().getProperty(_name, "Alerter.IRC.startupNotice");
314 >                sendNotice(_channel, startupNotice);
315 >            } catch (PropertyNotFoundException e) {
316 >                _logger.write(this.toString(), Logger.DEBUG, "Startup notice not defined, so not sending: "+e);
317 >            }
318 >            
319 >            // at this point initialisation is complete, so
320 >            // we can return and set this flag to allow alerts
321 >            _active = true;
322          }
323          
324          /**
325 <         * Sends a notice to the channel.
325 >         * Send a message to the current channel.
326           *
327 <         * @param msg The notice to send
327 >         * @param message The message to send
328           */
329 <        public void sendNotice(String msg) {
330 <            _socketOut.println("NOTICE "+_channel+" :"+msg);
329 >        public void sendMessage(String message) {
330 >            sendMessage(_channel, message);
331          }
332          
333          /**
334 <         * Connect to the IRC server, log in, and join the channel.
334 >         * If we get disconnected this method will be
335 >         * called, so we must take action. We'll simply
336 >         * keep trying to reinitialise, and thus
337 >         * reconnect to the server.
338 >         */
339 >        public void onDisconnect() {
340 >            // stop alerts being sent for now
341 >            _active = false;
342 >            while(true) {
343 >                // wait for a while, defined in the config
344 >                reconnectSleep();
345 >                try {
346 >                    init();
347 >                    break;
348 >                }
349 >                catch (IOException e) {
350 >                    _logger.write(this.toString(), Logger.ERROR, "Error initialising IRCBot: "+e);
351 >                }
352 >            }
353 >        }
354 >        
355 >        /**
356 >         * If we receive a message this method will
357 >         * be called. We'll check if the message is
358 >         * for us, and call handleInput if it is.
359           *
360 <         * @throws IOException if the connection fails
360 >         * @param channel The channel the message came from
361 >         * @param sender The sender of the message
362 >         * @param login The login of the sender
363 >         * @param hostname The hostname of the sender
364 >         * @param message The message sent
365           */
366 <        public void connect() throws IOException {
367 <            // setup the socket, reader and writer
368 <            _socket = new Socket(_IRCServer, _IRCPort);
369 <            _socketIn = new BufferedReader(new InputStreamReader(_socket.getInputStream()));
214 <            _socketOut = new PrintWriter(_socket.getOutputStream(), true);
215 <            // send the various log in messages
216 <            _socketOut.println("PASS");
217 <            _socketOut.println("NICK "+_nick);  
218 <            _socketOut.println("USER iscream 8 * :i-scream Bot");
219 <            // join the channel
220 <            _socketOut.println("JOIN "+_channel);
221 <            // start our listening thread
222 <            this.start();
366 >        public void onMessage(String channel, String sender, String login, String hostname, String message) {
367 >            if(isForMe(message)) {
368 >                handleInput(message, channel);
369 >            }
370          }
371          
372          /**
373 <         * Disconnect "nicely" from the IRC server.
373 >         * If we receive a private message this method
374 >         * will be called. No need to check if it's for
375 >         * us -- it has to be if it's a private message.
376           *
377 <         * @throws IOException if the disconnection fails
377 >         * @param sender The sender of the message
378 >         * @param login The login of the sender
379 >         * @param hostname The hostname of the sender
380 >         * @param message The message sent
381           */
382 <        public void disconnect() throws IOException {
383 <            // send proper QUIET
232 <            _socketOut.println("QUIT : iscreamBot component shutting down...");
233 <            // close the socket
234 <            _socketOut.close();
235 <            _socketIn.close();
236 <            _socket.close();
382 >        public void onPrivateMessage(String sender, String login, String hostname, String message) {
383 >            handleInput(message, sender);
384          }
385 <                        
385 >        
386          /**
387 <         * The socket connected to the server
387 >         * If we receive a nick change message, this
388 >         * method gets called. We don't care about
389 >         * other users changing their nick, so we only
390 >         * take notice if our nick changes. If it does
391 >         * we need to change our internal nickname
392 >         * state.
393 >         *
394 >         * @param oldNick the old nickname
395 >         * @param login the login of the nick changer
396 >         * @param hostname the hostname of the nick changer
397 >         * @param newNick the new nickname
398           */
399 <        private Socket _socket;
399 >        public void onNickChange(String oldNick, String login, String hostname, String newNick) {
400 >            if(oldNick.equals(_nickname)) {
401 >                _nickname = newNick;
402 >            }
403 >        }
404          
405          /**
406 <         * The writer
406 >         * If we receive a kick message this method
407 >         * gets called. We only take notice if it's
408 >         * us getting kicked, and then we'll rejoin
409 >         * the channel after a short wait.
410 >         *
411 >         * @param channel the channel the kick happened on
412 >         * @param kickerNick the person who performed the kick
413 >         * @param kickerLogin the login of the person who performed the kick
414 >         * @param kickerHostname the hostname of the person who performed the kick
415 >         * @param recipientNick the nickname of the person being kicked
416 >         * @param reason the reason for the kick
417           */
418 <        private PrintWriter _socketOut;
418 >        public void onKick(String channel, String kickerNick, String kickerLogin, String kickerHostname, String recipientNick, String reason) {
419 >            if(recipientNick.equals(_nickname) && channel.equals(_channel)) {
420 >                // remind the person it's not very nice :)
421 >                sendMessage(kickerNick, "That wasn't a nice thing to do...");
422 >                // get hold of the channel details, in case they've changed
423 >                try {
424 >                    _channel = ConfigurationProxy.getInstance().getProperty(_name, "Alerter.IRC.channel");
425 >                } catch(PropertyNotFoundException e) {
426 >                    _logger.write(this.toString(), Logger.ERROR, "Can't get channel name due to configuration error: "+e);
427 >                }
428 >                // wait for a while, defined in the config
429 >                reconnectSleep();
430 >                // we'll try and rejoin the channel regardless
431 >                // otherwise we might end up doing nothing!
432 >                joinChannel(_channel);
433 >            }
434 >        }
435          
436          /**
437 <         * The reader
437 >         * This method handles input directed to us, and
438 >         * responds accordingly if required.
439 >         *
440 >         * nb. matching user input is quite bad right now,
441 >         *     and should be improved one day.
442 >         *
443 >         * @param message the message from someone
444 >         * @param source where the message came from, so we know where to send the response
445           */
446 <        private BufferedReader _socketIn;
446 >        private void handleInput(String message, String source) {
447 >            // get hold of the configuration system
448 >            ConfigurationProxy cp = ConfigurationProxy.getInstance();
449 >            // setup some String's
450 >            String stopCommand, startCommand, timeSinceLastAlertCommand, lastAlertCommand, joinCommand;
451 >            String nickChangeCommand, versionCommand, helpCommand, statCommand, uptimeCommand;
452 >            // get the command set from the configuration
453 >            try {
454 >                stopCommand = cp.getProperty(_name, "Alerter.IRC.stopCommand");
455 >                startCommand = cp.getProperty(_name, "Alerter.IRC.startCommand");
456 >                timeSinceLastAlertCommand = cp.getProperty(_name, "Alerter.IRC.timeSinceLastAlertCommand");
457 >                lastAlertCommand = cp.getProperty(_name, "Alerter.IRC.lastAlertCommand");
458 >                joinCommand = cp.getProperty(_name, "Alerter.IRC.joinCommand");
459 >                nickChangeCommand = cp.getProperty(_name, "Alerter.IRC.nickChangeCommand");
460 >                versionCommand = cp.getProperty(_name, "Alerter.IRC.versionCommand");
461 >                helpCommand = cp.getProperty(_name, "Alerter.IRC.helpCommand");
462 >                statCommand = cp.getProperty(_name, "Alerter.IRC.statCommand");
463 >                uptimeCommand = cp.getProperty(_name, "Alerter.IRC.uptimeCommand");
464 >            } catch (PropertyNotFoundException e) {
465 >                _logger.write(this.toString(), Logger.ERROR, "Configuration error: "+e);
466 >                // lets bail from handling this line...
467 >                // ...it's gonna be hard without a command set!
468 >                return;
469 >            }
470 >            
471 >            // see if the message matches (loosely!) any
472 >            // of our known commands
473 >            if(message.indexOf(stopCommand) != -1) {
474 >                _active = false;
475 >                sendMessage(source, "alerts have been stopped");
476 >            }
477 >            else if(message.indexOf(startCommand) != -1) {
478 >                _active = true;
479 >                sendMessage(source, "alerts have been activated");
480 >            }
481 >            // this needs to go before lastAlertCommand if it contains
482 >            // the same words as the lastAlertCommand.
483 >            else if(message.indexOf(timeSinceLastAlertCommand) != -1) {
484 >                if(_lastAlertTime != -1) {
485 >                    long uptime = (System.currentTimeMillis() - _lastAlertTime) / 1000;
486 >                    String uptimeText = DateUtils.formatTime(uptime, "%DAYS% days, %HOURS% hours, %MINS% mins, and %SECS% secs");
487 >                    sendMessage(source, "I last sent an alert "+uptimeText+ " ago");
488 >                }
489 >                else {
490 >                    sendMessage(source, "I've never sent an alert!");
491 >                }
492 >            }
493 >            else if(message.indexOf(lastAlertCommand) != -1) {
494 >                if(_lastAlertTime != -1) {
495 >                    String date = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.SHORT, Locale.UK).format(new Date(_lastAlertTime));
496 >                    sendMessage(source, "last alert was at "+date+"; "+_lastAlert);
497 >                }
498 >                else {
499 >                    sendMessage(source, "I've never sent an alert!");
500 >                }
501 >                
502 >            }
503 >            else if(message.indexOf(joinCommand) != -1) {
504 >                String joinCmd = joinCommand;
505 >                String newChan = message.substring(message.indexOf(joinCmd) + joinCmd.length() + 1);
506 >                int endOfChan = newChan.indexOf(" ");
507 >                if(endOfChan == -1) {
508 >                    endOfChan = newChan.length();
509 >                }
510 >                newChan = newChan.substring(0, endOfChan);
511 >                if(newChan.equals(_channel)) {
512 >                    sendMessage(source, "I'm already on "+newChan+"!");
513 >                } else {
514 >                    partChannel(_channel);
515 >                    joinChannel(newChan);
516 >                    _channel = newChan;
517 >                }
518 >            }
519 >            else if(message.indexOf(nickChangeCommand) != -1) {
520 >                String nickChangeCmd = nickChangeCommand;
521 >                String newNick = message.substring(message.indexOf(nickChangeCmd) + nickChangeCmd.length() + 1);
522 >                int endOfNick = newNick.indexOf(" ");
523 >                if(endOfNick == -1) {
524 >                    endOfNick = newNick.length();
525 >                }
526 >                newNick = newNick.substring(0, endOfNick);
527 >                changeNick(newNick);
528 >            }
529 >            else if(message.indexOf(versionCommand) != -1) {
530 >                sendMessage(source, "I am version "+REVISION.substring(11, REVISION.length() -2)+" of the i-scream alerting bot");
531 >            }
532 >            else if(message.indexOf(helpCommand) != -1) {
533 >                sendMessage(source, "Hello, I am the i-scream alerting bot version "+REVISION.substring(11, REVISION.length() -2));
534 >                sendMessage(source, "I understand the following commands;");
535 >                sendMessage(source, stopCommand);
536 >                sendMessage(source, startCommand);
537 >                sendMessage(source, lastAlertCommand);
538 >                sendMessage(source, joinCommand);
539 >                sendMessage(source, nickChangeCommand);
540 >                sendMessage(source, statCommand);
541 >                sendMessage(source, uptimeCommand);
542 >                sendMessage(source, timeSinceLastAlertCommand);
543 >                sendMessage(source, helpCommand);
544 >            }
545 >            else if(message.indexOf(statCommand) != -1) {
546 >                sendMessage(source, "I have sent a total of "+_alertCount+" alerts, and ignored a total of "+_ignoredCount+"!");
547 >            }
548 >            else if(message.indexOf(uptimeCommand) != -1) {
549 >                long uptime = (System.currentTimeMillis() - _startTime) / 1000;
550 >                String uptimeText = DateUtils.formatTime(uptime, "%DAYS% days, %HOURS% hours, %MINS% mins, and %SECS% secs");
551 >                sendMessage(source, "I have been running for "+uptimeText);
552 >            }
553 >            else if(message.indexOf("ping") != -1) {
554 >                sendMessage(source, "pong");
555 >            }
556 >            else if(message.indexOf("do a jibble dance") != -1) {
557 >                // little joke :)
558 >                sendAction(source, "jives to the funky beat shouting \"ii--screeeaaammm\"");
559 >            }
560 >            else {
561 >                String rejectMessage = NOT_CONFIGURED;
562 >                try {
563 >                    rejectMessage = cp.getProperty(_name, "Alerter.IRC.rejectMessage");
564 >                } catch(PropertyNotFoundException e) {
565 >                    _logger.write(this.toString(), Logger.ERROR, "Configuration error: "+e);
566 >                }
567 >                sendMessage(source, rejectMessage);
568 >            }
569 >        }
570 >        
571 >        /**
572 >         * Quick method to check if the message appears
573 >         * to be directed at us. We simply check to see
574 >         * if it starts with our nick in some fashion.
575 >         *
576 >         * @param message the message to check
577 >         * @return if the message is for us
578 >         */
579 >        private boolean isForMe(String message) {
580 >            String nick = _nickname.toLowerCase();
581 >            String msg = message.toLowerCase();
582 >            if(msg.startsWith(nick + ", ") ||
583 >               msg.startsWith(nick + ": ") ||
584 >               msg.startsWith(nick + " ")) {
585 >                return true;
586 >            }
587 >            else {
588 >                return false;
589 >            }
590 >        }
591 >        
592 >        /**
593 >         * Sleep for a configurable amount of time and
594 >         * then return. This is used when reconnecting
595 >         * to the server or a channel.
596 >         */
597 >        private void reconnectSleep() {
598 >            int delayTime = 0;
599 >            try {
600 >                delayTime = Integer.parseInt(ConfigurationProxy.getInstance().getProperty(_name, "Alerter.IRC.reconnectDelay"));
601 >            } catch (NumberFormatException e) {
602 >                delayTime = DEFAULT_RECONNECT_DELAY;
603 >                _logger.write(this.toString(), Logger.WARNING, "Erronous Alerter.IRC.reconnectDelay value in configuration using default of " + delayTime + " seconds");
604 >            } catch (PropertyNotFoundException e) {
605 >                delayTime = DEFAULT_RECONNECT_DELAY;
606 >                _logger.write(this.toString(), Logger.WARNING, "Alerter.IRC.reconnectDelay value unavailable using default of " + delayTime + " seconds");
607 >            }
608 >            _logger.write(this.toString(), Logger.ERROR, "Waiting "+delayTime+" seconds for reconnect...");
609 >            try {
610 >                Thread.sleep(delayTime * 1000);
611 >            } catch (InterruptedException e) {}
612 >        }
613 >        
614 >        /**
615 >         * Overrides the {@link java.lang.Object#toString() Object.toString()}
616 >         * method to provide clean logging (every class should have this).
617 >         *
618 >         * This uses the uk.org.iscream.cms.server.util.NameFormat class
619 >         * to format the toString()
620 >         *
621 >         * @return the name of this class and its CVS revision
622 >         */
623 >        public String toString() {
624 >            return FormatName.getName(
625 >                _name,
626 >                getClass().getName(),
627 >                REVISION);
628 >        }
629 >        
630 >        /**
631 >         * Just a reminder to what channel we're on...
632 >         * this can't be dynamic :)
633 >         */
634 >        private String _channel;
635 >        
636 >        /**
637 >         * A reminder of our current nickname...
638 >         */
639 >        private String _nickname;
640          
641      }
642  

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