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

Comparing projects/cms/source/server/uk/org/iscream/cms/server/client/monitors/Disk__Monitor.java (file contents):
Revision 1.7 by ajm, Thu Mar 22 17:57:05 2001 UTC vs.
Revision 1.16 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.org.iscream.client.monitors;
21	>	package uk.org.iscream.cms.server.client.monitors;
22
23		//---IMPORTS---
24		import java.util.HashMap;
#	Line 7 | Line 26 | import java.util.ArrayList;
26		import java.util.Set;
27		import java.util.Iterator;
28		import java.text.NumberFormat;
29	<	import uk.org.iscream.client.*;
30	<	import uk.org.iscream.core.*;
31	<	import uk.org.iscream.util.*;
32	<	import uk.org.iscream.componentmanager.*;
29	>	import uk.org.iscream.cms.server.client.*;
30	>	import uk.org.iscream.cms.server.core.*;
31	>	import uk.org.iscream.cms.server.util.*;
32	>	import uk.org.iscream.cms.server.componentmanager.*;
33
34		/**
35		* This Monitor watches the Disks for all machines
#	Line 27 | Line 46 | public class Disk__Monitor extends MonitorSkeleton {
46		*/
47		public final String REVISION = "$Revision$";
48
49	+	/**
50	+	* A description of this monitor
51	+	*/
52		public final String DESC = "Monitors all host disks.";
53
54		//---STATIC METHODS---
#	Line 34 | Line 56 | public class Disk__Monitor extends MonitorSkeleton {
56		//---CONSTRUCTORS---
57
58		//---PUBLIC METHODS---
59	<
59	>
60	>	/**
61	>	* Analyse a packet of data, and generate an alert if
62	>	* necessary.
63	>	*
64	>	* @param packet the XMLPacket to analyse
65	>	*/
66		public void analysePacket(XMLPacket packet) {
67		String source = packet.getParam("packet.attributes.machine_name");
68		if (!_hosts.containsKey(source)) {
#	Line 42 | Line 70 | public class Disk__Monitor extends MonitorSkeleton {
70		}
71
72		HashMap diskRegisters = (HashMap) _hosts.get(source);
73	<
74	<	// a tempory holder for all the disk attributes we find
73	>
74	>	// key prefix
75	>	String keyPrefix = "packet.disk.p";
76	>
77	>	// a temporary holder for all the disk attributes we find
78		ArrayList disks = new ArrayList();
79
80		// unfortunatly we need to check the whole packet
#	Line 52 | Line 83 | public class Disk__Monitor extends MonitorSkeleton {
83		Iterator i = packetSet.iterator();
84		while (i.hasNext()) {
85		String dataKey = (String) i.next();
86	<	if(dataKey.startsWith("packet.disk.p")) {
86	>	if(dataKey.startsWith(keyPrefix)) {
87		if(!disks.contains(dataKey)) {
88		String diskNumber = "";
89
90		// pos is after "packet.disk.p"
91	<	int pos = 13;
91	>	int pos = keyPrefix.length();
92		while (dataKey.charAt(pos) != '.') {
93		diskNumber = diskNumber + dataKey.charAt(pos);
94		pos++;
#	Line 66 | Line 97 | public class Disk__Monitor extends MonitorSkeleton {
97		// add the disk to our list, with the packet data
98
99		// used (we won't use this value - but we need it to forget about it ;)
100	<	disks.add("packet.disk.p" + diskNumber + ".attributes.used");
100	>	disks.add(keyPrefix + diskNumber + ".attributes.used");
101
102		// device
103	<	disks.add("packet.disk.p" + diskNumber + ".attributes.name");
104	<	String device = packet.getParam("packet.disk.p" + diskNumber + ".attributes.name");
103	>	disks.add(keyPrefix + diskNumber + ".attributes.name");
104	>	String device = packet.getParam(keyPrefix + diskNumber + ".attributes.name");
105		// mount point
106	<	disks.add("packet.disk.p" + diskNumber + ".attributes.mount");
107	<	String mount = packet.getParam("packet.disk.p" + diskNumber + ".attributes.mount");
106	>	disks.add(keyPrefix + diskNumber + ".attributes.mount");
107	>	String mount = packet.getParam(keyPrefix + diskNumber + ".attributes.mount");
108
109		// these next two will be used to calculate the %age
110		// total
111	<	disks.add("packet.disk.p" + diskNumber + ".attributes.kbytes");
112	<	String total = packet.getParam("packet.disk.p" + diskNumber + ".attributes.kbytes");
111	>	disks.add(keyPrefix + diskNumber + ".attributes.kbytes");
112	>	String total = packet.getParam(keyPrefix + diskNumber + ".attributes.kbytes");
113		// available
114	<	disks.add("packet.disk.p" + diskNumber + ".attributes.avail");
115	<	String avail = packet.getParam("packet.disk.p" + diskNumber + ".attributes.avail");
114	>	disks.add(keyPrefix + diskNumber + ".attributes.avail");
115	>	String avail = packet.getParam(keyPrefix + diskNumber + ".attributes.avail");
116
117		// *** now process this disk ***
118
119		// check if we've seen this disk before on a previous run
120		// if not, we need to create a register for it
121	<	if(!diskRegisters.containsKey(diskNumber)) {
122	<	diskRegisters.put(diskNumber, new Register(source, _name, mount));
121	>	//   nb. use the mount as the key as this is unlikely to change,
122	>	//       unlike diskNumber which could easily change
123	>	//         (diskNumber is based on the order of df's output!)
124	>	if(!diskRegisters.containsKey(mount)) {
125	>	diskRegisters.put(mount, new Register(source, _name, mount));
126		}
127
128		// get the register for this disk
129	<	Register reg = (Register) diskRegisters.get(diskNumber);
129	>	Register reg = (Register) diskRegisters.get(mount);
130
131		// get the packet data
132		double diskTotal, diskAvail;
#	Line 111 | Line 145 | public class Disk__Monitor extends MonitorSkeleton {
145
146		boolean useValue = false;
147		try {
148	<	String option = _cp.getProperty("Host." + source, "Monitor." + _name + ".thresholdMeasure");
148	>	// try looking for a mount-point specific thresholdMeasure first
149	>	String option = _cp.getProperty("Host." + source, "Monitor." + _name + "." + mount + ".thresholdMeasure");
150		if (option.equals("VALUE")) {
151		useValue = true;
152	<	}
152	>	}
153		} catch (PropertyNotFoundException e) {
154	<	// we default to percentage
154	>	try {
155	>	// now look for a more general thresholdMeasure
156	>	String option = _cp.getProperty("Host." + source, "Monitor." + _name + ".thresholdMeasure");
157	>	if (option.equals("VALUE")) {
158	>	useValue = true;
159	>	}
160	>	} catch (PropertyNotFoundException f) {
161	>	// we default to percentage in any case
162	>	}
163		}
164
165		// this  bit determines if the disk check is a % check
166		// or a kb check
124	–	double diskInUse;
167		String type;
168	+	double curValue;
169	+	int newThreshold;
170		if(useValue) {
171	<	// kb disk in use
172	<	diskInUse = diskTotal - diskAvail;
171	>	// kb disk available
172	>	curValue = diskAvail;
173	>	// negate check
174	>	newThreshold = checkAttributeThreshold(curValue, reg, true);
175		type = "kb";
176		} else {
177		// % disk in use
178	<	diskInUse = (1 - (diskAvail / diskTotal)) * 100;
178	>	curValue = (1 - (diskAvail / diskTotal)) * 100;
179	>	// normal check
180	>	newThreshold = checkAttributeThreshold(curValue, reg, false);
181		type = "%";
182		}
183
136	–
137	–
138	–	int newThreshold = checkAttributeThreshold(diskInUse, reg);
139	–
184		// format the diskInUse to a String
185		NumberFormat nf = NumberFormat.getInstance();
186		nf.setMaximumFractionDigits(2);
187		nf.setMinimumFractionDigits(2);
188	<	String strDiskInUse = nf.format(diskInUse);
188	>	String strCurValue = nf.format(curValue);
189
190		// say which disk had the problem
191		String attributeName = "Disk in use " + type + " on " + mount + " (" + device + ")";
192
193	<	processAlert(newThreshold, attributeName, reg, source, strDiskInUse);
193	>	processAlert(newThreshold, attributeName, reg, source, strCurValue);
194		}
195		}
196		}
#	Line 156 | Line 200 | public class Disk__Monitor extends MonitorSkeleton {
200		* Overrides the {@link java.lang.Object#toString() Object.toString()}
201		* method to provide clean logging (every class should have this).
202		*
203	<	* This uses the uk.org.iscream.util.NameFormat class
203	>	* This uses the uk.org.iscream.cms.server.util.NameFormat class
204		* to format the toString()
205		*
206		* @return the name of this class and its CVS revision
#	Line 176 | Line 220 | public class Disk__Monitor extends MonitorSkeleton {
220		}
221
222		//---PRIVATE METHODS---
223	<
224	<	private int checkAttributeThreshold(double diskInUse, Register reg) {
223	>
224	>	/**
225	>	* Checks a piece of current data, and returns the
226	>	* threshold it breaches, if any.
227	>	*
228	>	* The option to negate the check can be used in
229	>	* situations where being *below* the threshold
230	>	* is an 'alertable' situation. In this specific
231	>	* case, we'd do this with kb disk checks.
232	>	*
233	>	* @param value the current value
234	>	* @param reg the Register for the host
235	>	* @param negateCheck whether to negate the check
236	>	* @return the threshold level breached, if any
237	>	*/
238	>	private int checkAttributeThreshold(double value, Register reg, boolean negateCheck) {
239		for(int thresholdLevel = Alert.thresholdLevels.length - 1; thresholdLevel >= 0; thresholdLevel--) {
240		if (reg.getThreshold(thresholdLevel) != -1.0) {
241	<	if(((double) reg.getThreshold(thresholdLevel)) < diskInUse) {
242	<	return thresholdLevel;
241	>	if(!negateCheck) {
242	>	// normal check - has the value gone *over* the threshold
243	>	if(((double) reg.getThreshold(thresholdLevel)) < value) {
244	>	return thresholdLevel;
245	>	}
246		}
247	+	else {
248	+	// negated check - has the value gone *under* the threshold
249	+	if(((double) reg.getThreshold(thresholdLevel)) > value) {
250	+	return thresholdLevel;
251	+	}
252	+	}
253		}
254		}
255		return Alert.thresholdNORMAL;
#	Line 190 | Line 257 | public class Disk__Monitor extends MonitorSkeleton {
257
258		//---ACCESSOR/MUTATOR METHODS---
259
260	+	/**
261	+	* Returns a reference to a specific Queue for this
262	+	* monitor. This Queue returns only the data packets
263	+	* (based on type) that we want too look at.
264	+	*
265	+	* @return a reference to a Queue
266	+	*/
267		protected Queue getQueue() {
268		return MonitorManager.getInstance().getDataQueue();
269		}
#	Line 211 | Line 285 | public class Disk__Monitor extends MonitorSkeleton {
285		* A reference to the configuration proxy in use
286		*/
287		private ConfigurationProxy _cp = ConfigurationProxy.getInstance();
288	<
288	>
289	>	/**
290	>	* A HashMap of Registers (or groups of Registers), one
291	>	* for each host we're monitoring.
292	>	*/
293		private HashMap _hosts = new HashMap();
294
295		//---STATIC ATTRIBUTES---

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