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Java > Open Source Codes > org > jboss > monitor > StringThresholdMonitor


1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2005, JBoss Inc., and individual contributors as indicated
4 * by the @authors tag. See the copyright.txt in the distribution for a
5 * full listing of individual contributors.
6 *
7 * This is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as
9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This software is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this software; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21 */
22 package org.jboss.monitor;
23
24 import org.jboss.system.ServiceMBeanSupport;
25 import org.jboss.logging.Logger;
26
27 import javax.management.ObjectName JavaDoc;
28 import javax.management.MBeanException JavaDoc;
29 import javax.management.AttributeNotFoundException JavaDoc;
30 import javax.management.InstanceNotFoundException JavaDoc;
31 import javax.management.ReflectionException JavaDoc;
32
33 /**
34  * Comment
35  *
36  * @author <a HREF="mailto:bill@jboss.org">Bill Burke</a>
37  * @version $Revision: 37459 $
38  *
39  **/
40 public class StringThresholdMonitor extends JBossMonitor implements StringThresholdMonitorMBean
41 {
42    protected String JavaDoc thresholdString;
43    protected boolean equalityTriggersAlert;
44
45    protected void testThreshold()
46    {
47       if (alertSent) return;
48       String JavaDoc value = null;
49       try
50       {
51          value = (String JavaDoc)getServer().getAttribute(observedObject, attribute);
52          if (equalityTriggersAlert) // alert trigger when value == threshold
53 {
54             if (!thresholdString.equals(value))
55             {
56                return;
57             }
58          }
59          else // alert triggered when value != threshold
60 {
61             if (thresholdString.equals(value))
62             {
63                return;
64             }
65          }
66       }
67       catch (Exception JavaDoc e)
68       {
69          throw new RuntimeException JavaDoc("Failed to compare threshold, mbean failure");
70       }
71
72       alertSent = true;
73       triggerTime = System.currentTimeMillis();
74       triggeredAttributeValue = value;
75
76       StringThresholdNotification notification = new StringThresholdNotification(monitorName, getServiceName(), observedObject,
77               attribute, value, thresholdString, equalityTriggersAlert,
78               getNextNotificationSequenceNumber());
79       this.sendNotification(notification);
80    }
81
82    public String JavaDoc getThreshold()
83    {
84       return thresholdString;
85    }
86
87    public void setThreshold(String JavaDoc val)
88    {
89       thresholdString = val;
90    }
91
92    public boolean getEqualityTriggersAlert()
93    {
94       return equalityTriggersAlert;
95    }
96
97    public void setEqualityTriggersAlert(boolean compareEqual)
98    {
99       this.equalityTriggersAlert = compareEqual;
100    }
101 }
102
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