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

Comparing projects/cms/source/server/uk/org/iscream/cms/server/client/MonitorManager.java (file contents):
Revision 1.8 by tdb, Thu Mar 15 22:12:22 2001 UTC vs.
Revision 1.20 by tdb, Fri Jul 25 14:35:29 2003 UTC

#	Line 1 | Line 1
1	+	/*
2	+	* i-scream central monitoring system
3	+	* http://www.i-scream.org.uk
4	+	* Copyright (C) 2000-2002 i-scream
5	+	*
6	+	* This program is free software; you can redistribute it and/or
7	+	* modify it under the terms of the GNU General Public License
8	+	* as published by the Free Software Foundation; either version 2
9	+	* of the License, or (at your option) any later version.
10	+	*
11	+	* This program is distributed in the hope that it will be useful,
12	+	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	+	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14	+	* GNU General Public License for more details.
15	+	*
16	+	* You should have received a copy of the GNU General Public License
17	+	* along with this program; if not, write to the Free Software
18	+	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19	+	*/
20	+
21		//---PACKAGE DECLARATION---
22	<	package uk.org.iscream.client;
22	>	package uk.org.iscream.cms.server.client;
23
24		//---IMPORTS---
25	<	import uk.org.iscream.componentmanager.*;
26	<	import uk.org.iscream.core.*;
27	<	import uk.org.iscream.util.*;
25	>	import uk.org.iscream.cms.server.componentmanager.*;
26	>	import uk.org.iscream.cms.server.core.*;
27	>	import uk.org.iscream.cms.util.*;
28		import java.util.*;
29
30		/**
31		* A manager for the Monitors.
32		*
33	+	* This class starts by loading all the monitors as specificed in the configuration.
34	+	* These monitors should implement the PluginMonitor interface.
35	+	*
36	+	* This class then takes the feed of data coming in over CORBA from
37	+	* the ClientServant queue.  This data is then looked at to determine
38	+	* type.  It then places it into either a data queue, or an other
39	+	* queue, and all data in the the all queue.
40	+	*
41	+	* Monitors then read the data off the queue that they are interested in
42	+	* and process the data accordingly.
43	+	*
44		* @author  $Author$
45		* @version $Id$
46		*/
47	<	class MonitorManager extends Thread {
47	>	public class MonitorManager extends Thread {
48
49		//---FINAL ATTRIBUTES---
50
#	Line 28 | Line 59 | class MonitorManager extends Thread {
59		* Return a reference to the single class.
60		* Construct it if it does not already exist, otherwise just return the reference.
61		*/
62	<	public static MonitorManager getInstance() {
62	>	public synchronized static MonitorManager getInstance() {
63		if (_instance == null){
64		_instance = new MonitorManager();
65		}
#	Line 37 | Line 68 | class MonitorManager extends Thread {
68
69		//---CONSTRUCTORS---
70
71	+	/**
72	+	* Constructs a new MonitorManager.
73	+	* This initialises all the queues and loads
74	+	* all the Monitors that have been specified in the configuration
75	+	*/
76		private MonitorManager() {
77		// set our name
78		setName("client.MonitorManager");
#	Line 49 | Line 85 | class MonitorManager extends Thread {
85		// get the config proxy
86		ConfigurationProxy cp = ConfigurationProxy.getInstance();
87
88	+	// get the configuration for our outgoing queue's
89	+
90	+	// see if these Queue's need a size limit
91	+	try {
92	+	int queueSizeLimit = Integer.parseInt(cp.getProperty(_name, "Queue.SizeLimit"));
93	+	String queueRemoveAlgorithm = cp.getProperty(_name, "Queue.RemoveAlgorithm");
94	+	int algorithm = StringUtils.getStringPos(queueRemoveAlgorithm, Queue.algorithms);
95	+	if(algorithm != -1) {
96	+	_logger.write(toString(), Logger.DEBUG, "Starting 3 Queues with size limit of "+queueSizeLimit+", using remove algorithm "+queueRemoveAlgorithm);
97	+	// we have valid values, so lets start it.
98	+	_dataQueue = new Queue(queueSizeLimit, algorithm);
99	+	_otherQueue = new Queue(queueSizeLimit, algorithm);
100	+	_allQueue = new Queue(queueSizeLimit, algorithm);
101	+	}
102	+	else {
103	+	_logger.write(toString(), Logger.WARNING, "Bad Queue Algorithm configuration, not known: "+queueRemoveAlgorithm);
104	+	// just don't activate a limit
105	+	_dataQueue = new Queue();
106	+	_otherQueue = new Queue();
107	+	_allQueue = new Queue();
108	+	}
109	+	} catch (PropertyNotFoundException e) {
110	+	_logger.write(toString(), Logger.DEBUG, "Optional config not set: "+e);
111	+	// just don't activate a limit
112	+	_dataQueue = new Queue();
113	+	_otherQueue = new Queue();
114	+	_allQueue = new Queue();
115	+	} catch (NumberFormatException e) {
116	+	_logger.write(toString(), Logger.WARNING, "Bad Queue SizeLimit configuration: "+e);
117	+	// just don't activate a limit
118	+	_dataQueue = new Queue();
119	+	_otherQueue = new Queue();
120	+	_allQueue = new Queue();
121	+	}
122	+
123	+	// startup monitors on these queues
124	+	try {
125	+	// try to get the interval, if this fails, we won't start up the monitor
126	+	int queueMonitorInterval = Integer.parseInt(cp.getProperty(_name, "Queue.MonitorInterval"));
127	+	_dataQueue.startMonitor(queueMonitorInterval*1000, ClientMain._monitorQueue, _name + " DataQueue");
128	+	_otherQueue.startMonitor(queueMonitorInterval*1000, ClientMain._monitorQueue, _name + " OtherQueue");
129	+	_allQueue.startMonitor(queueMonitorInterval*1000, ClientMain._monitorQueue, _name + " AllQueue");
130	+	} catch (PropertyNotFoundException e) {
131	+	_logger.write(toString(), Logger.WARNING, "failed to find queue monitor config, disabling. " + e);
132	+	}
133	+
134		// get the configuration for this plug-in setup
135		String pluginsPackage, pluginsList;
136		try {
#	Line 88 | Line 170 | class MonitorManager extends Thread {
170
171		//---PUBLIC METHODS---
172
173	+	/**
174	+	* Runs the MonitorManager.  This reads data from the
175	+	* inbound queue (from the ClientServant).  And passes
176	+	* it into the appropriate queue for processing by the monitor
177	+	* threads.
178	+	*/
179		public void run() {
92	–	// construct now, and use multiple times
93	–	XMLPacketMaker xmlPacketMaker = new XMLPacketMaker();
94	–
180		boolean run=true;
181
182		// keep these out here, saves recreating the object
#	Line 108 | Line 193 | class MonitorManager extends Thread {
193		XMLPacket packet = null;
194
195		try {
196	<	packet = xmlPacketMaker.createXMLPacket(xml);
196	>	packet = _xmlCache.getXMLPacket(xml);
197		} catch(InvalidXMLException e) {
198		_logger.write(toString(), Logger.ERROR, "Invalid XML: "+e);
199		// skip the rest of this loop iteration
200		continue;
201		}
202	<
203	<	// for each monitor in the pipeline...
204	<	Iterator pluginMonitors = _monitorPipeline.iterator();
205	<	while (pluginMonitors.hasNext()){
206	<	PluginMonitor monitor = (PluginMonitor)pluginMonitors.next();
122	<	monitor.analysePacket(packet);
202	>
203	>	if(packet == null) {
204	>	_logger.write(toString(), Logger.WARNING, "Got a null packet when parsing: "+xml);
205	>	// skip to next packet
206	>	continue;
207		}
208	+
209	+	// examine the packet and place it in the relevant outgoing queue
210	+	if(packet.getParam("packet.attributes.type") != null &&
211	+	packet.getParam("packet.attributes.type").equals("data")) {
212	+	_dataQueue.add(packet);
213	+	}
214	+	else {
215	+	_otherQueue.add(packet);
216	+	}
217	+	// always add to all queue
218	+	_allQueue.add(packet);
219		}
220		}
221
#	Line 128 | Line 223 | class MonitorManager extends Thread {
223		* Overrides the {@link java.lang.Object#toString() Object.toString()}
224		* method to provide clean logging (every class should have this).
225		*
226	<	* This uses the uk.org.iscream.util.FormatName class
226	>	* This uses the uk.org.iscream.cms.util.FormatName class
227		* to format the toString()
228		*
229		* @return the name of this class and its CVS revision
#	Line 143 | Line 238 | class MonitorManager extends Thread {
238		//---PRIVATE METHODS---
239
240		//---ACCESSOR/MUTATOR METHODS---
241	<
241	>
242	>	/**
243	>	* Allows Monitors to obtain
244	>	* the queue of data packets
245	>	*/
246	>	public Queue getDataQueue() {
247	>	return _dataQueue;
248	>	}
249	>
250	>	/**
251	>	* Allows Monitors to obtain
252	>	* the queue of all other packets
253	>	*/
254	>	public Queue getOtherQueue() {
255	>	return _otherQueue;
256	>	}
257	>
258	>	/**
259	>	* In case a Monitor wants more
260	>	* than one type of packet,
261	>	* this queue can be obtained.
262	>	*/
263	>	public Queue getAllQueue() {
264	>	return _allQueue;
265	>	}
266	>
267		//---ATTRIBUTES---
268
269		/**
#	Line 169 | Line 289 | class MonitorManager extends Thread {
289		private ReferenceManager _refman = ReferenceManager.getInstance();
290
291		/**
292	<	* A reference to our Queue
292	>	* A reference to our incoming Queue
293		*/
294		private Queue _queue;
295
296		/**
297	<	* Our queue ID
297	>	* Our incoming queue ID
298		*/
299		private int _qID;
300
#	Line 187 | Line 307 | class MonitorManager extends Thread {
307		* LinkedList for holding the PluginMonitor objects (the pipeline).
308		*/
309		private LinkedList _monitorPipeline = new LinkedList();
310	<
310	>
311	>	/**
312	>	* Outgoing data Queue
313	>	*/
314	>	private Queue _dataQueue;
315	>
316	>	/**
317	>	* Outgoing other Queue
318	>	*/
319	>	private Queue _otherQueue;
320	>
321	>	/**
322	>	* Outgoing ALL Queue
323	>	*/
324	>	private Queue _allQueue;
325	>
326	>	/**
327	>	* A reference to the XMLCache in use
328	>	*/
329	>	private XMLCache _xmlCache = XMLCache.getInstance();
330	>
331		//---STATIC ATTRIBUTES---
332
333		/**

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