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1
4 package com.tc.stats;
5
6 import com.tc.management.AbstractTerracottaMBean;
7
8 import javax.management.AttributeChangeNotification  ;
9 import javax.management.MBeanNotificationInfo ;
10 import javax.management.NotCompliantMBeanException ;
11 import javax.management.Notification ;
12
13 public abstract class AbstractNotifyingMBean extends AbstractTerracottaMBean {
14
15 private static final MBeanNotificationInfo [] NOTIFICATION_INFO;
16 static {
17 final String [] types = new String [] { AttributeChangeNotification.ATTRIBUTE_CHANGE };
18 final String noticeType = AttributeChangeNotification .class.getName();
19 final String description = "An attribute of this MBean has changed";
20 NOTIFICATION_INFO = new MBeanNotificationInfo [] { new MBeanNotificationInfo (types, noticeType, description) };
21
22 }
23
24 private long nextSequenceNumber = 1;
25
26 protected AbstractNotifyingMBean(final Class mBeanInterface) throws NotCompliantMBeanException {
27 super(mBeanInterface, true);
28 }
29
30 public MBeanNotificationInfo [] getNotificationInfo() {
31 return NOTIFICATION_INFO;
32 }
33
34 protected synchronized void sendNotification(final String type, final Object source) {
35 sendNotification(new Notification (type, source, nextSequenceNumber++));
36 }
37
38 protected synchronized void sendNotification(final String msg, final String attr, final String type,
39 final Object oldVal, final Object newVal) {
40 sendNotification(new AttributeChangeNotification (this, nextSequenceNumber++, System.currentTimeMillis(), msg, attr,
41 type, oldVal, newVal));
42 }
43
44 }
45 |
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