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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 1.7 by tdb, Thu Mar 15 18:59:50 2001 UTC vs.
Revision 1.16 by tdb, Tue May 21 16:47:16 2002 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.server.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, a heartbeat queue or
39	+	* an other 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 46 | Line 82 | class MonitorManager extends Thread {
82		_logger.write(toString(), Logger.SYSINIT, "Initialising");
83		_logger.write(toString(), Logger.SYSMSG, "Creating monitor pipeline for plugin monitors ...");
84
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 4 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	+	_heartbeatQueue = new Queue(queueSizeLimit, algorithm);
100	+	_otherQueue = new Queue(queueSizeLimit, algorithm);
101	+	_allQueue = new Queue(queueSizeLimit, algorithm);
102	+	}
103	+	else {
104	+	_logger.write(toString(), Logger.WARNING, "Bad Queue Algorithm configuration, not known: "+queueRemoveAlgorithm);
105	+	// just don't activate a limit
106	+	_dataQueue = new Queue();
107	+	_heartbeatQueue = new Queue();
108	+	_otherQueue = new Queue();
109	+	_allQueue = new Queue();
110	+	}
111	+	} catch (PropertyNotFoundException e) {
112	+	_logger.write(toString(), Logger.DEBUG, "Optional config not set: "+e);
113	+	// just don't activate a limit
114	+	_dataQueue = new Queue();
115	+	_heartbeatQueue = new Queue();
116	+	_otherQueue = new Queue();
117	+	_allQueue = new Queue();
118	+	} catch (NumberFormatException e) {
119	+	_logger.write(toString(), Logger.WARNING, "Bad Queue SizeLimit configuration: "+e);
120	+	// just don't activate a limit
121	+	_dataQueue = new Queue();
122	+	_heartbeatQueue = new Queue();
123	+	_otherQueue = new Queue();
124	+	_allQueue = new Queue();
125	+	}
126	+
127	+	// startup monitors on these queues
128	+	try {
129	+	// try to get the interval, if this fails, we won't start up the monitor
130	+	int queueMonitorInterval = Integer.parseInt(cp.getProperty(_name, "Queue.MonitorInterval"));
131	+	_dataQueue.startMonitor(queueMonitorInterval*1000, ClientMain._monitorQueue, _name + " DataQueue");
132	+	_heartbeatQueue.startMonitor(queueMonitorInterval*1000, ClientMain._monitorQueue, _name + " HeartbeatQueue");
133	+	_otherQueue.startMonitor(queueMonitorInterval*1000, ClientMain._monitorQueue, _name + " OtherQueue");
134	+	_allQueue.startMonitor(queueMonitorInterval*1000, ClientMain._monitorQueue, _name + " AllQueue");
135	+	} catch (PropertyNotFoundException e) {
136	+	_logger.write(toString(), Logger.WARNING, "failed to find queue monitor config, disabling. " + e);
137	+	}
138	+
139		// get the configuration for this plug-in setup
140	<	Configuration config = _refman.getCM().getConfiguration(_name);
141	<	String pluginsPackage = config.getProperty("Monitor.PluginsPackage");
142	<	String pluginsList = config.getProperty("Monitor.Plugins");
140	>	String pluginsPackage, pluginsList;
141	>	try {
142	>	pluginsPackage = cp.getProperty(_name, "Monitor.PluginsPackage");
143	>	pluginsList = cp.getProperty(_name, "Monitor.Plugins");
144	>	} catch(PropertyNotFoundException e) {
145	>	_logger.write(toString(), Logger.WARNING, "Unable to get required configuration, Monitor's will not be activated: "+e);
146	>	// setting these will ensure we don't build a pipeline
147	>	pluginsPackage = "";
148	>	pluginsList = "";
149	>	}
150
151		StringTokenizer st = new StringTokenizer(pluginsList, ";");
152
#	Line 78 | Line 175 | class MonitorManager extends Thread {
175
176		//---PUBLIC METHODS---
177
178	+	/**
179	+	* Runs the MonitorManager.  This reads data from the
180	+	* inbound queue (from the ClientServant).  And passes
181	+	* it into the appropriate queue for processing by the monitor
182	+	* threads.
183	+	*/
184		public void run() {
185		// construct now, and use multiple times
186		XMLPacketMaker xmlPacketMaker = new XMLPacketMaker();
#	Line 104 | Line 207 | class MonitorManager extends Thread {
207		// skip the rest of this loop iteration
208		continue;
209		}
210	<
211	<	// for each monitor in the pipeline...
212	<	Iterator pluginMonitors = _monitorPipeline.iterator();
213	<	while (pluginMonitors.hasNext()){
111	<	PluginMonitor monitor = (PluginMonitor)pluginMonitors.next();
112	<	monitor.analysePacket(packet);
210	>
211	>	// examine the packet and place it in the relevant outgoing queue
212	>	if(packet.getParam("packet.attributes.type").equals("data")) {
213	>	_dataQueue.add(packet);
214		}
215	+	else if(packet.getParam("packet.attributes.type").equals("heartbeat")) {
216	+	_heartbeatQueue.add(packet);
217	+	}
218	+	else {
219	+	_otherQueue.add(packet);
220	+	}
221	+	// always add to all queue
222	+	_allQueue.add(packet);
223		}
224		}
225
#	Line 118 | Line 227 | class MonitorManager extends Thread {
227		* Overrides the {@link java.lang.Object#toString() Object.toString()}
228		* method to provide clean logging (every class should have this).
229		*
230	<	* This uses the uk.org.iscream.util.FormatName class
230	>	* This uses the uk.org.iscream.cms.server.util.FormatName class
231		* to format the toString()
232		*
233		* @return the name of this class and its CVS revision
#	Line 133 | Line 242 | class MonitorManager extends Thread {
242		//---PRIVATE METHODS---
243
244		//---ACCESSOR/MUTATOR METHODS---
245	<
245	>
246	>	/**
247	>	* Allows Monitors to obtain
248	>	* the queue of data packets
249	>	*/
250	>	public Queue getDataQueue() {
251	>	return _dataQueue;
252	>	}
253	>
254	>	/**
255	>	* Allows Monitors to obtain
256	>	* the queue of heatbeat packets
257	>	*/
258	>	public Queue getHeartbeatQueue() {
259	>	return _heartbeatQueue;
260	>	}
261	>
262	>	/**
263	>	* Allows Monitors to obtain
264	>	* the queue of all other packets
265	>	*/
266	>	public Queue getOtherQueue() {
267	>	return _otherQueue;
268	>	}
269	>
270	>	/**
271	>	* In case a Monitor wants more
272	>	* than one type of packet,
273	>	* this queue can be obtained.
274	>	*/
275	>	public Queue getAllQueue() {
276	>	return _allQueue;
277	>	}
278	>
279		//---ATTRIBUTES---
280
281		/**
#	Line 159 | Line 301 | class MonitorManager extends Thread {
301		private ReferenceManager _refman = ReferenceManager.getInstance();
302
303		/**
304	<	* A reference to our Queue
304	>	* A reference to our incoming Queue
305		*/
306		private Queue _queue;
307
308		/**
309	<	* Our queue ID
309	>	* Our incoming queue ID
310		*/
311		private int _qID;
312
#	Line 177 | Line 319 | class MonitorManager extends Thread {
319		* LinkedList for holding the PluginMonitor objects (the pipeline).
320		*/
321		private LinkedList _monitorPipeline = new LinkedList();
322	<
322	>
323	>	/**
324	>	* Outgoing data Queue
325	>	*/
326	>	private Queue _dataQueue;
327	>
328	>	/**
329	>	* Outgoing heartbeat Queue
330	>	*/
331	>	private Queue _heartbeatQueue;
332	>
333	>	/**
334	>	* Outgoing other Queue
335	>	*/
336	>	private Queue _otherQueue;
337	>
338	>	/**
339	>	* Outgoing ALL Queue
340	>	*/
341	>	private Queue _allQueue;
342	>
343		//---STATIC ATTRIBUTES---
344
345		/**

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