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tdb |
1.18 |
/* |
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* i-scream central monitoring system |
3 |
tdb |
1.22 |
* http://www.i-scream.org |
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tdb |
1.18 |
* Copyright (C) 2000-2002 i-scream |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
12 |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
18 |
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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*/ |
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21 |
ajm |
1.1 |
//---PACKAGE DECLARATION--- |
22 |
tdb |
1.17 |
package uk.org.iscream.cms.server.client; |
23 |
ajm |
1.1 |
|
24 |
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//---IMPORTS--- |
25 |
tdb |
1.20 |
import uk.org.iscream.cms.util.*; |
26 |
tdb |
1.17 |
import uk.org.iscream.cms.server.componentmanager.*; |
27 |
ajm |
1.1 |
|
28 |
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/** |
29 |
ajm |
1.2 |
* The Register class holds theshold values, |
30 |
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* the last level of alert for each attribute for a monitor |
31 |
ajm |
1.11 |
* and the time of last alert sent for each alert level. |
32 |
ajm |
1.1 |
* |
33 |
ajm |
1.2 |
* This class is used by monitor classes so they can determine |
34 |
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* how often they should send alerts when breaching alert levels. |
35 |
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* It also stores (and keeps uptodate (via the configuration proxy) |
36 |
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* the threshold values for the monitor. |
37 |
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* |
38 |
tdb |
1.18 |
* @author $Author: tdb $ |
39 |
tdb |
1.22 |
* @version $Id: Register.java,v 1.21 2004/01/15 13:41:47 tdb Exp $ |
40 |
ajm |
1.1 |
*/ |
41 |
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public class Register { |
42 |
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43 |
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//---FINAL ATTRIBUTES--- |
44 |
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45 |
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/** |
46 |
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* The current CVS revision of this class |
47 |
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*/ |
48 |
tdb |
1.22 |
public static final String REVISION = "$Revision: 1.21 $"; |
49 |
ajm |
1.1 |
|
50 |
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//---STATIC METHODS--- |
51 |
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52 |
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//---CONSTRUCTORS--- |
53 |
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54 |
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/** |
55 |
ajm |
1.2 |
* Construct a Register with the hostname and monitorName |
56 |
ajm |
1.11 |
* (for obtaining the threshold values). |
57 |
ajm |
1.14 |
* This constructs a generic register for a specific monitor. |
58 |
ajm |
1.1 |
* |
59 |
ajm |
1.2 |
* @param hostname the hostname this register is for |
60 |
|
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* @param monitorName the monitor this register is for |
61 |
ajm |
1.14 |
*/ |
62 |
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public Register(String hostname, String monitorName) { |
63 |
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this(hostname, monitorName, null); |
64 |
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} |
65 |
ajm |
1.11 |
|
66 |
ajm |
1.14 |
/** |
67 |
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* Construct a Register with the hostname and monitorName |
68 |
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* (for obtaining the threshold values). |
69 |
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* This constructs a register for a specific attribute check |
70 |
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* by a monitor. |
71 |
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* |
72 |
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* @param hostname the hostname this register is for |
73 |
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* @param monitorName the monitor this register is for |
74 |
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* @param attributeName the specific attribute this register is for |
75 |
ajm |
1.1 |
*/ |
76 |
ajm |
1.14 |
public Register(String hostname, String monitorName, String attributeName) { |
77 |
ajm |
1.2 |
_hostname = hostname; |
78 |
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_monitorName = monitorName; |
79 |
ajm |
1.14 |
_attributeName = attributeName; |
80 |
ajm |
1.11 |
_lastAlertLevel = 0; |
81 |
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_lastThresholdLevel = 0; |
82 |
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_initialAlertTime= 0; |
83 |
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_lastAlertTimeout = 0; |
84 |
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_times = new long[Alert.alertLevels.length]; |
85 |
ajm |
1.2 |
// initialise the arrays to 0 |
86 |
ajm |
1.11 |
for(int x = 0; x < Alert.alertLevels.length; x++) { |
87 |
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_times[x] = 0; |
88 |
ajm |
1.1 |
} |
89 |
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} |
90 |
ajm |
1.14 |
|
91 |
ajm |
1.1 |
|
92 |
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//---PUBLIC METHODS--- |
93 |
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94 |
tdb |
1.21 |
/** |
95 |
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* Advances the alert level to the next one up. |
96 |
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* |
97 |
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* This keeps track of the number of the number |
98 |
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* of times the highest NON-FINAL alert level |
99 |
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* has been reached. Note this isn't a specific |
100 |
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* level, just the highest, so you could configure |
101 |
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* more levels and not affect this. |
102 |
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* |
103 |
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* If the count exceeds the number of times |
104 |
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* set in the configuration, it escalates to |
105 |
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* a FINAL alert if we're using FINAL's. |
106 |
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* |
107 |
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* It determines if to use FINAL's from the config |
108 |
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* entry reachFINALcount, when the count exceeds |
109 |
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* this value, it escalates to a FINAL. If that attribute |
110 |
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* is mis-read or is not configured. It will NEVER reach |
111 |
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* a FINAL. |
112 |
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*/ |
113 |
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public void escalateAlert() { |
114 |
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// don't escalate if we're already on the last alert |
115 |
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if(getLastAlertLevel() != Alert.alertLevels.length -1) { |
116 |
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setLastAlertLevel(getNextAlertLevel()); |
117 |
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} |
118 |
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try { |
119 |
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// note if we fail to get this value, we won't process the res of this |
120 |
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int reachFINALcount = Integer.parseInt(_cp.getProperty("Host." + _hostname, "Monitor." + _monitorName + ".reachFINALcount")); |
121 |
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if (getLastAlertLevel() == Alert.alertLevels.length - 2) { |
122 |
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_maxLevelCount++; |
123 |
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if(_maxLevelCount > reachFINALcount) { |
124 |
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setLastAlertLevel(Alert.alertFINAL); |
125 |
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} |
126 |
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} |
127 |
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} catch (PropertyNotFoundException e) { |
128 |
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// we NEVER reach FINAL in this case |
129 |
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} catch (NumberFormatException e) { |
130 |
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// we NEVER reach FINAL in this case |
131 |
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} |
132 |
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} |
133 |
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|
134 |
ajm |
1.1 |
//---PRIVATE METHODS--- |
135 |
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|
136 |
ajm |
1.14 |
/** |
137 |
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* Obtains a threshold value from the configuration for a given level. |
138 |
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* The attribute name specifies which property to get. |
139 |
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* eg, attributeName = idle it will look for |
140 |
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* Monitor.<monitor name>.idle.threshold.<alert level> |
141 |
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* eg, attributeName = null |
142 |
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* Monitor.<monitor name>.threshold.<alert level> |
143 |
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* |
144 |
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* Note that if its null, this will get the threshold for the monitor |
145 |
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* as a whole, not the specific attribute. |
146 |
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* |
147 |
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* @param level the alert level to get the attribute for |
148 |
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* @param attributeName the attribute to get the threshold for |
149 |
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* |
150 |
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* @return the threshold obtained |
151 |
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*/ |
152 |
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private String getThresholdConfig(int level, String attributeName) throws PropertyNotFoundException { |
153 |
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String temp = ""; |
154 |
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if (attributeName != null) { |
155 |
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temp = "." + attributeName; |
156 |
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} |
157 |
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return _cp.getProperty("Host." + _hostname, "Monitor." + _monitorName + temp + ".threshold." + Alert.thresholdLevels[level]); |
158 |
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} |
159 |
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|
160 |
ajm |
1.1 |
//---ACCESSOR/MUTATOR METHODS--- |
161 |
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|
162 |
ajm |
1.2 |
/** |
163 |
ajm |
1.11 |
* Gets the last alert level |
164 |
ajm |
1.2 |
* |
165 |
|
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* @return the last alert level |
166 |
|
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*/ |
167 |
ajm |
1.11 |
public int getLastAlertLevel() { |
168 |
|
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return _lastAlertLevel; |
169 |
ajm |
1.2 |
} |
170 |
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|
171 |
|
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/** |
172 |
ajm |
1.11 |
* Sets the last threshold level |
173 |
ajm |
1.2 |
* |
174 |
|
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* @param level the new last threshold level |
175 |
|
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*/ |
176 |
ajm |
1.11 |
public void setLastThresholdLevel(int level) { |
177 |
|
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_lastThresholdLevel = level; |
178 |
ajm |
1.2 |
} |
179 |
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|
180 |
ajm |
1.11 |
/** |
181 |
|
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* Gets the last threshold level |
182 |
ajm |
1.2 |
* |
183 |
|
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* @return the last threshold level |
184 |
|
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*/ |
185 |
ajm |
1.11 |
public int getLastThresholdLevel() { |
186 |
|
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return _lastThresholdLevel; |
187 |
ajm |
1.2 |
} |
188 |
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|
189 |
|
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/** |
190 |
ajm |
1.11 |
* Sets the last alert level |
191 |
ajm |
1.2 |
* |
192 |
ajm |
1.5 |
* Note that if this is setting to an OK |
193 |
|
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* level alert, it resets _maxLevelCount. |
194 |
|
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* |
195 |
ajm |
1.6 |
* This also sets the "initialAlertTime" |
196 |
|
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* if the next alert after OK is set. |
197 |
|
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* And resets it to 0 if it IS an OK. |
198 |
|
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* |
199 |
ajm |
1.2 |
* @param level the new last alert level |
200 |
|
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*/ |
201 |
ajm |
1.11 |
public void setLastAlertLevel(int level) { |
202 |
|
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_lastAlertLevel = level; |
203 |
ajm |
1.5 |
if (level == Alert.alertOK) { |
204 |
|
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_maxLevelCount = 0; |
205 |
tdb |
1.13 |
// we won't do this, so OK's still have the initialAlertTime |
206 |
|
|
// of the original alert they're OK'ing |
207 |
|
|
//_initialAlertTime = 0; |
208 |
ajm |
1.6 |
} |
209 |
|
|
if (level == Alert.alertOK + 1) { |
210 |
ajm |
1.11 |
_initialAlertTime = System.currentTimeMillis(); |
211 |
ajm |
1.5 |
} |
212 |
ajm |
1.2 |
} |
213 |
|
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|
214 |
|
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/** |
215 |
ajm |
1.11 |
* Gets the time an alert was sent at the given level. |
216 |
ajm |
1.2 |
* |
217 |
|
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* @param level the alert level to get |
218 |
|
|
* |
219 |
|
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* @return the time last sent |
220 |
|
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*/ |
221 |
ajm |
1.11 |
public long getTimeLastSent() { |
222 |
|
|
return _times[getLastAlertLevel()]; |
223 |
ajm |
1.2 |
} |
224 |
|
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|
225 |
|
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/** |
226 |
ajm |
1.11 |
* Gets the time an alert was sent at the given level. |
227 |
ajm |
1.2 |
* |
228 |
|
|
* @param level the alert level to get |
229 |
|
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* @param value the new time |
230 |
|
|
*/ |
231 |
ajm |
1.11 |
public void setTimeLastSent(long value) { |
232 |
|
|
_times[getLastAlertLevel()] = value; |
233 |
ajm |
1.2 |
} |
234 |
|
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|
235 |
|
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/** |
236 |
|
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* Gets the threshold value for the given |
237 |
|
|
* level of alert. |
238 |
|
|
* |
239 |
|
|
* If there is no alert threshold for a |
240 |
|
|
* given level, this returns -1.0 |
241 |
|
|
* |
242 |
|
|
* @param level the alert level |
243 |
|
|
*/ |
244 |
|
|
public double getThreshold(int level) { |
245 |
tdb |
1.4 |
// -1.0 means we don't use an alert level |
246 |
ajm |
1.2 |
double threshold = -1.0; |
247 |
tdb |
1.4 |
try { |
248 |
ajm |
1.15 |
String thresholdString = ""; |
249 |
|
|
try { |
250 |
|
|
thresholdString = getThresholdConfig(level, _attributeName); |
251 |
|
|
} catch (PropertyNotFoundException e) { |
252 |
|
|
thresholdString = getThresholdConfig(level, null); |
253 |
|
|
} |
254 |
tdb |
1.4 |
threshold = Double.parseDouble(thresholdString); |
255 |
|
|
} catch (PropertyNotFoundException e) { |
256 |
|
|
threshold = -1.0; |
257 |
|
|
} catch (NumberFormatException e) { |
258 |
|
|
threshold = -1.0; |
259 |
ajm |
1.2 |
} |
260 |
|
|
return threshold; |
261 |
|
|
} |
262 |
|
|
|
263 |
|
|
/** |
264 |
|
|
* Gets the alert timeout value for the given |
265 |
|
|
* level of alert. This value is in millis, |
266 |
|
|
* and is converted from the value in the config, |
267 |
|
|
* which should be seconds. |
268 |
|
|
* |
269 |
ajm |
1.16 |
* Note that if the alert timeout for the current monitor |
270 |
|
|
* is not configured, it will try to obtain the default |
271 |
|
|
* timeout for all Monitor's. If there is no alert timeout |
272 |
|
|
* for either the monitor or a default setting this returns 0. |
273 |
|
|
* |
274 |
ajm |
1.2 |
* Note that this is dependant on the threshold value |
275 |
|
|
* given, the timeout is obatined from the config, then |
276 |
|
|
* divided by the threshold value, this allows alerts to |
277 |
|
|
* progress faster should a higher threshold value be passed |
278 |
|
|
* |
279 |
|
|
* @param level the alert level |
280 |
|
|
* @param thresholdLevel the threshold leve we are on |
281 |
|
|
*/ |
282 |
ajm |
1.11 |
public long getAlertTimeout(int level) { |
283 |
tdb |
1.4 |
// 0 means we don't use this value |
284 |
ajm |
1.2 |
long timeout = 0; |
285 |
tdb |
1.4 |
try { |
286 |
ajm |
1.16 |
String timeoutString; |
287 |
|
|
try { |
288 |
|
|
timeoutString = _cp.getProperty("Host." + _hostname, "Monitor." + _monitorName + ".alertTimeout." + Alert.alertLevels[level]); |
289 |
|
|
} catch (PropertyNotFoundException e) { |
290 |
|
|
// if there is no timeout for the monitor |
291 |
|
|
// check for a default |
292 |
|
|
timeoutString = _cp.getProperty("Host." + _hostname, "Monitor.alertTimeout." + Alert.alertLevels[level]); |
293 |
|
|
} |
294 |
ajm |
1.11 |
int threshold = getLastThresholdLevel(); |
295 |
tdb |
1.4 |
if (threshold > 0) { |
296 |
|
|
timeout = (Long.parseLong(timeoutString) / threshold) * 1000; |
297 |
ajm |
1.2 |
} |
298 |
tdb |
1.4 |
} catch (PropertyNotFoundException e) { |
299 |
|
|
timeout = 0; |
300 |
|
|
} catch (NumberFormatException e) { |
301 |
|
|
timeout = 0; |
302 |
ajm |
1.2 |
} |
303 |
|
|
return timeout; |
304 |
ajm |
1.1 |
} |
305 |
|
|
|
306 |
ajm |
1.2 |
/** |
307 |
|
|
* Either advances to the next alert level, or if |
308 |
|
|
* the maximum alert level has been reached, simply returns |
309 |
|
|
* that. |
310 |
|
|
* |
311 |
ajm |
1.5 |
* Note this method will NEVER reach the last alert level |
312 |
|
|
* in the list, this is assumed to be FINAL, and special |
313 |
|
|
* logic is in place to handle that. |
314 |
|
|
* |
315 |
ajm |
1.2 |
*/ |
316 |
ajm |
1.11 |
public int getNextAlertLevel() { |
317 |
|
|
if((getLastAlertLevel() + 1) > (Alert.alertLevels.length - 2)) { |
318 |
|
|
return getLastAlertLevel(); |
319 |
ajm |
1.2 |
} |
320 |
ajm |
1.11 |
return getLastAlertLevel() + 1; |
321 |
ajm |
1.2 |
} |
322 |
|
|
|
323 |
|
|
/** |
324 |
ajm |
1.3 |
* Gets the timeout value of the last alert |
325 |
|
|
* sent |
326 |
|
|
* |
327 |
|
|
* @return the last timeout value |
328 |
|
|
*/ |
329 |
ajm |
1.11 |
public long getLastAlertTimeout() { |
330 |
|
|
return _lastAlertTimeout; |
331 |
ajm |
1.3 |
} |
332 |
|
|
|
333 |
|
|
/** |
334 |
|
|
* Sets the timeout value of the last alert |
335 |
|
|
* sent |
336 |
|
|
* |
337 |
|
|
* @param timeout the new value |
338 |
|
|
*/ |
339 |
ajm |
1.11 |
public void setLastAlertTimeout(long timeout) { |
340 |
|
|
_lastAlertTimeout = timeout; |
341 |
ajm |
1.3 |
} |
342 |
|
|
|
343 |
|
|
/** |
344 |
ajm |
1.6 |
* Returns the time that the first alert was sent |
345 |
|
|
* for an attribute that has passed a threshold value |
346 |
|
|
* |
347 |
|
|
*/ |
348 |
ajm |
1.11 |
public long getInitialAlertTime() { |
349 |
|
|
return _initialAlertTime; |
350 |
ajm |
1.1 |
} |
351 |
|
|
|
352 |
|
|
//---ATTRIBUTES--- |
353 |
|
|
|
354 |
ajm |
1.2 |
/** |
355 |
|
|
* The host this register is for |
356 |
|
|
*/ |
357 |
|
|
private String _hostname; |
358 |
|
|
|
359 |
|
|
/** |
360 |
|
|
* The monitor this register is for |
361 |
|
|
*/ |
362 |
|
|
private String _monitorName; |
363 |
ajm |
1.14 |
|
364 |
|
|
/** |
365 |
|
|
* The attribute name, as obtained from |
366 |
|
|
* the configuration. |
367 |
|
|
* eg, idle or /var |
368 |
|
|
*/ |
369 |
|
|
private String _attributeName; |
370 |
ajm |
1.2 |
|
371 |
|
|
/** |
372 |
|
|
* An array of last alert levels for |
373 |
|
|
* each attribute this register is looking |
374 |
|
|
* after. |
375 |
|
|
*/ |
376 |
ajm |
1.11 |
private int _lastAlertLevel; |
377 |
ajm |
1.2 |
|
378 |
|
|
/** |
379 |
|
|
* An array of last threshold levels for |
380 |
|
|
* each attribute this register is looking |
381 |
|
|
* after. |
382 |
|
|
*/ |
383 |
ajm |
1.11 |
private int _lastThresholdLevel; |
384 |
ajm |
1.3 |
|
385 |
|
|
/** |
386 |
|
|
* An array of last alert timeout levels for |
387 |
|
|
* each attribute this register is looking |
388 |
|
|
* after. |
389 |
|
|
*/ |
390 |
ajm |
1.11 |
private long _lastAlertTimeout; |
391 |
ajm |
1.2 |
|
392 |
|
|
/** |
393 |
|
|
* An array of arrays containing |
394 |
|
|
* time an alert of each level |
395 |
|
|
* was last sent for each attribute. |
396 |
|
|
*/ |
397 |
ajm |
1.11 |
private long[] _times; |
398 |
ajm |
1.6 |
|
399 |
|
|
/** |
400 |
|
|
* Initial times that an alert was first |
401 |
|
|
* raised. |
402 |
|
|
*/ |
403 |
ajm |
1.11 |
private long _initialAlertTime; |
404 |
ajm |
1.2 |
|
405 |
|
|
/** |
406 |
|
|
* A reference to the configuration proxy in use |
407 |
|
|
*/ |
408 |
|
|
private ConfigurationProxy _cp = ConfigurationProxy.getInstance(); |
409 |
ajm |
1.5 |
|
410 |
|
|
/** |
411 |
|
|
* The number of times the maximum level alert |
412 |
|
|
* has occured IN A ROW, this is escalated by |
413 |
|
|
* the escalate(int) method, and reset by the |
414 |
|
|
* setLastAlertLevel(int, int) method |
415 |
|
|
*/ |
416 |
|
|
private int _maxLevelCount = 0; |
417 |
ajm |
1.1 |
|
418 |
|
|
//---STATIC ATTRIBUTES--- |
419 |
|
|
|
420 |
|
|
} |