1 |
tdb |
1.5 |
/* |
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 |
tdb |
1.1 |
//---PACKAGE DECLARATION--- |
21 |
tdb |
1.4 |
package uk.org.iscream.cms.server.client.monitors; |
22 |
tdb |
1.1 |
|
23 |
|
|
//---IMPORTS--- |
24 |
|
|
import java.util.HashMap; |
25 |
tdb |
1.4 |
import uk.org.iscream.cms.server.client.*; |
26 |
|
|
import uk.org.iscream.cms.server.core.*; |
27 |
|
|
import uk.org.iscream.cms.server.util.*; |
28 |
|
|
import uk.org.iscream.cms.server.componentmanager.*; |
29 |
tdb |
1.1 |
|
30 |
|
|
/** |
31 |
|
|
* This Monitor watches the Load for all machines |
32 |
|
|
* |
33 |
tdb |
1.5 |
* @author $Author: tdb $ |
34 |
|
|
* @version $Id: Load__Monitor.java,v 1.4 2001/05/29 17:02:34 tdb Exp $ |
35 |
tdb |
1.1 |
*/ |
36 |
|
|
public class Load__Monitor extends MonitorSkeleton { |
37 |
|
|
|
38 |
|
|
//---FINAL ATTRIBUTES--- |
39 |
|
|
|
40 |
|
|
/** |
41 |
|
|
* The current CVS revision of this class |
42 |
|
|
*/ |
43 |
tdb |
1.5 |
public final String REVISION = "$Revision: 1.4 $"; |
44 |
tdb |
1.1 |
|
45 |
tdb |
1.3 |
/** |
46 |
|
|
* A description of this monitor |
47 |
|
|
*/ |
48 |
tdb |
1.1 |
public final String DESC = "Monitors Load."; |
49 |
|
|
|
50 |
|
|
//---STATIC METHODS--- |
51 |
|
|
|
52 |
|
|
//---CONSTRUCTORS--- |
53 |
|
|
|
54 |
|
|
//---PUBLIC METHODS--- |
55 |
tdb |
1.3 |
|
56 |
|
|
/** |
57 |
|
|
* Analyse a packet of data, and generate an alert if |
58 |
|
|
* necessary. |
59 |
|
|
* |
60 |
|
|
* @param packet the XMLPacket to analyse |
61 |
|
|
*/ |
62 |
tdb |
1.1 |
public void analysePacket(XMLPacket packet) { |
63 |
|
|
|
64 |
ajm |
1.2 |
String source = packet.getParam("packet.attributes.machine_name"); |
65 |
|
|
if (!_hosts.containsKey(source)) { |
66 |
|
|
HashMap attributeRegisters = new HashMap(); |
67 |
|
|
initAttributeRegsiters(source, attributeRegisters); |
68 |
|
|
_hosts.put(source, attributeRegisters); |
69 |
|
|
} |
70 |
|
|
|
71 |
|
|
HashMap attributeRegisters = (HashMap) _hosts.get(source); |
72 |
|
|
for(int attributeNum = 0; attributeNum < _attributes.length; attributeNum++) { |
73 |
|
|
Register reg = (Register) attributeRegisters.get(_attributes[attributeNum]); |
74 |
|
|
// find out the threshold level we're at |
75 |
|
|
String attribute = _attributes[attributeNum]; |
76 |
|
|
String attributeName = _attributeNames[attributeNum]; |
77 |
|
|
String currentValue = packet.getParam(attribute); |
78 |
tdb |
1.3 |
// find out our new threshold |
79 |
ajm |
1.2 |
int newThreshold = checkAttributeThreshold(currentValue, reg); |
80 |
tdb |
1.3 |
// process this data to generate an alert |
81 |
ajm |
1.2 |
processAlert(newThreshold, attributeName, reg, source, currentValue); |
82 |
tdb |
1.1 |
} |
83 |
ajm |
1.2 |
|
84 |
tdb |
1.1 |
} |
85 |
|
|
|
86 |
|
|
/** |
87 |
|
|
* Overrides the {@link java.lang.Object#toString() Object.toString()} |
88 |
|
|
* method to provide clean logging (every class should have this). |
89 |
|
|
* |
90 |
tdb |
1.4 |
* This uses the uk.org.iscream.cms.server.util.NameFormat class |
91 |
tdb |
1.1 |
* to format the toString() |
92 |
|
|
* |
93 |
|
|
* @return the name of this class and its CVS revision |
94 |
|
|
*/ |
95 |
|
|
public String toString() { |
96 |
|
|
return FormatName.getName( |
97 |
|
|
_name, |
98 |
|
|
getClass().getName(), |
99 |
|
|
REVISION); |
100 |
|
|
} |
101 |
|
|
|
102 |
|
|
/** |
103 |
|
|
* return the String representation of what the monitor does |
104 |
|
|
*/ |
105 |
|
|
public String getDescription(){ |
106 |
|
|
return DESC; |
107 |
|
|
} |
108 |
|
|
|
109 |
|
|
//---PRIVATE METHODS--- |
110 |
tdb |
1.3 |
|
111 |
|
|
/** |
112 |
|
|
* Checks a piece of current data, and returns the |
113 |
|
|
* threshold it breaches, if any. |
114 |
|
|
* |
115 |
|
|
* @param attributeString a String representing the current data value |
116 |
|
|
* @param reg the Register for the host |
117 |
|
|
* @return the threshold level breached, if any |
118 |
|
|
*/ |
119 |
tdb |
1.1 |
private int checkAttributeThreshold(String attributeString, Register reg) { |
120 |
|
|
for(int thresholdLevel = Alert.thresholdLevels.length - 1; thresholdLevel >= 0; thresholdLevel--) { |
121 |
|
|
if (reg.getThreshold(thresholdLevel) != -1.0) { |
122 |
|
|
if(attributeString != null) { |
123 |
|
|
try { |
124 |
|
|
double attribute = Double.parseDouble(attributeString); |
125 |
|
|
if (reg.getThreshold(thresholdLevel) < attribute) return thresholdLevel; |
126 |
|
|
} catch (NumberFormatException e) { |
127 |
|
|
// we got some duff data in the packet, but we shouldn't have |
128 |
|
|
_logger.write(toString(), Logger.DEBUG, "possible errenous packet data, should be double value - " + attributeString); |
129 |
|
|
} |
130 |
|
|
} |
131 |
|
|
} |
132 |
|
|
} |
133 |
|
|
return Alert.thresholdNORMAL; |
134 |
|
|
} |
135 |
tdb |
1.3 |
|
136 |
|
|
/** |
137 |
|
|
* Initialises a HashMap of Registers with the current list |
138 |
|
|
* of attributes. This is only used if we are looking at more |
139 |
|
|
* than one distinct attribute. |
140 |
|
|
* |
141 |
|
|
* @param source the host we are looking at |
142 |
|
|
* @param attributeRegisters a HashMap to put the new Registers in |
143 |
|
|
*/ |
144 |
tdb |
1.1 |
private void initAttributeRegsiters(String source, HashMap attributeRegisters) { |
145 |
|
|
for(int attributeNum = 0; attributeNum < _attributes.length; attributeNum++) { |
146 |
|
|
String attributeName = _attributes[attributeNum].substring(_attributes[attributeNum].lastIndexOf(".") + 1); |
147 |
|
|
attributeRegisters.put(_attributes[attributeNum], new Register(source, _name, attributeName)); |
148 |
|
|
} |
149 |
|
|
} |
150 |
|
|
|
151 |
|
|
//---ACCESSOR/MUTATOR METHODS--- |
152 |
tdb |
1.3 |
|
153 |
|
|
/** |
154 |
|
|
* Returns a reference to a specific Queue for this |
155 |
|
|
* monitor. This Queue returns only the data packets |
156 |
|
|
* (based on type) that we want too look at. |
157 |
|
|
* |
158 |
|
|
* @return a reference to a Queue |
159 |
|
|
*/ |
160 |
ajm |
1.2 |
protected Queue getQueue() { |
161 |
|
|
return MonitorManager.getInstance().getDataQueue(); |
162 |
|
|
} |
163 |
|
|
|
164 |
tdb |
1.1 |
|
165 |
|
|
//---ATTRIBUTES--- |
166 |
|
|
|
167 |
|
|
/** |
168 |
|
|
* This is the friendly identifier of the |
169 |
|
|
* component this class is running in. |
170 |
|
|
* eg, a Filter may be called "filter1", |
171 |
|
|
* If this class does not have an owning |
172 |
|
|
* component, a name from the configuration |
173 |
|
|
* can be placed here. This name could also |
174 |
|
|
* be changed to null for utility classes. |
175 |
|
|
*/ |
176 |
|
|
private String _name = "Load"; |
177 |
|
|
|
178 |
|
|
/** |
179 |
tdb |
1.3 |
* A HashMap of Registers (or groups of Registers), one |
180 |
|
|
* for each host we're monitoring. |
181 |
tdb |
1.1 |
*/ |
182 |
|
|
private HashMap _hosts = new HashMap(); |
183 |
tdb |
1.3 |
|
184 |
|
|
/** |
185 |
|
|
* An array of attributes which we will be checking. |
186 |
|
|
*/ |
187 |
tdb |
1.1 |
private String[] _attributes = { "packet.load.load1", "packet.load.load5", "packet.load.load15" }; |
188 |
tdb |
1.3 |
|
189 |
|
|
/** |
190 |
|
|
* An array of "nice names" for the attributes in _attributes. |
191 |
|
|
*/ |
192 |
tdb |
1.1 |
private String[] _attributeNames = {"1 min load avg.", "5 min load avg.", "15 min load avg."}; |
193 |
|
|
|
194 |
|
|
//---STATIC ATTRIBUTES--- |
195 |
|
|
|
196 |
|
|
} |