[jboss-user] [Management, JMX/JBoss] - [subscription-list: null] message in logs, cannot create a n

[weinstock.gabriel]

Hi,
  I'm trying to create an XMBean that listens for notifications from a Timer XMBean. It should simply log the notification and handback when it receives one. However, I never see the logging statement indicating my MBean has started up (or shut down for that matter), and when I look at the logs, I see these entries around my code:


  | 2007-06-04 15:11:23,960 DEBUG [org.jboss.system.ServiceCreator] About to create xmbean object: domain.com:service=OmsService with code: com.domain.oms.xmbeans.impl.OmsService with descriptor: META-INF/oms-xmbean.xml
  | 2007-06-04 15:11:23,991 DEBUG [org.jboss.system.ServiceCreator] Created bean: domain.com:service=OmsService
  | 2007-06-04 15:11:23,991 DEBUG [org.jboss.system.ServiceConfigurator] SubscriptionList set to [subscription-list: null] in domain.com:service=OmsService
  | 

I'm putting all of my class files, the jboss-service.xml, and the oms-xmbean.xml file in a .sar file (oms.sar) and deploying to a JBoss 4.2.0 GA server. Here are the two source code files:

OmsService.java:


  | package com.domain.oms.xmbeans.impl;
  | 
  | import org.jboss.system.ListenerServiceMBeanSupport;
  | import org.jboss.logging.Logger;
  | 
  | import javax.management.Notification;
  | 
  | import com.domain.oms.xmbeans.OmsServiceMBean;
  | 
  | public class OmsService extends ListenerServiceMBeanSupport implements OmsServiceMBean {
  | 	private static final Logger LOG = Logger.getLogger(OmsService.class.getName());
  | 	
  | 	public OmsService() {
  | 		super();
  | 	}
  | 	/*
  | 	public String getName() {
  | 		return "OmsService";
  | 	}
  | 	*/
  | 	public void startService() throws Exception {
  | 		LOG.info("oms service starting up");
  | 		super.subscribe(true);
  | 	}
  | 	
  | 	public void stopService() throws Exception {
  | 		LOG.info("stopping oms service");
  | 		super.unsubscribe();
  | 	}
  | 	
  | 	public void handleNotification2(Notification notification, Object handback) {
  | 		LOG.info("got " + notification + ", " + handback);
  | 	}
  | }
  | 

OmsServiceMBean.java:


  | package com.domain.oms.xmbeans;
  | 
  | import org.jboss.system.ListenerServiceMBean;
  | 
  | public interface OmsServiceMBean extends ListenerServiceMBean {
  | }
  | 

And the .xml files:

jboss-service.xml:


  | <?xml version="1.0" encoding="UTF-8"?>
  | <!DOCTYPE server PUBLIC "-//JBoss//DTD MBean Service 4.2//EN" "http://www.jboss.org/j2ee/dtd/jboss-service_4_2.dtd">
  | <server>
  | 	<mbean code="com.domain.oms.xmbeans.impl.OmsService" name="domain.com:service=OmsService" xmbean-dd="META-INF/oms-xmbean.xml">
  | 		<attribute name="SubscriptionList">
  | 			<subscription-list>
  | 				<mbean name="jboss.monitor:name=Heartbeat,type=Timer">
  |  					<notification type="jboss.monitor.heartbeat"/>
  | 				</mbean>
  | 			</subscription-list>
  | 		</attribute>
  | 	</mbean>
  | </server>
  | 

oms-xmbean.xml:


  | <?xml version="1.0" encoding="UTF-8"?>
  | <!DOCTYPE mbean PUBLIC "-//JBoss//DTD JBOSS XMBEAN 1.2//EN" "http://www.jboss.org/j2ee/dtd/jboss_xmbean_1_2.dtd">
  | <mbean>
  |     <description>oms service</description>
  |     <class>com.domain.oms.xmbeans.impl.OmsService</class>
  |     <constructor>
  |         <description>the default constructor</description>
  |         <name>OmsService</name>
  |     </constructor>
  |     <attribute access="write-only" setMethod="setSubscriptionList">
  |     	<name>SubscriptionList</name>
  | 		<type>org.w3c.dom.Element</type>
  |     </attribute>
  | 	<operation>
  | 		<name>startService</name>
  | 		<return-type>void</return-type>
  | 	</operation>
  | 	<operation>
  | 		<name>stopService</name>
  | 		<return-type>void</return-type>
  | 	</operation>
  | 	<operation>
  | 		<name>handleNotification2</name>
  | 		<parameter>
  | 			<name>notification</name>
  | 			<type>javax.management.Notification</type>
  | 		</parameter>
  | 		<parameter>
  | 			<name>handback</name>
  | 			<type>java.lang.Object</type>
  | 		</parameter>
  | 		<return-type>void</return-type>
  | 	</operation>
  | </mbean>
  | 

Can someone tell me what I'm doing wrong? I've been debugging this for the last 4 days and getting nowhere. I can't determine why the subscription-list element is coming back null, or why the service start method is never invoked.

By the way, I did enable the Timer (heartbeat) service in jboss-monitoring.xml.

Any help would be SO greatly appreciated,
Thanks,
Gabe

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