Try making your TestServerMBean extend
org.jboss.util.ServiceMBean. The start method is declared in a parent
interface to ServiceMBean, and JMX needs the "start" to be declared in an
interface before it can be called on an implementation. FYI, the
"Start" in ServiceMBeanSupport calls your "startService".
Aaron
On Tue, 24 Oct 2000, Adam Rabung wrote:
> Hi All,
> Please forgive me if this question is uninformed.
> I'm trying to create a custom MBean. I found the section in
> the documentation on "Custom MBeans"
> (http://www.jboss.org/manual/adv_config.html#custom).
> Following the directions, I first implemented my service, sublassing
> org.jboss.util.ServiceMBean and org.jboss.util.ServiceMBeanSupport.
> I called this class TestService:
>
> package com.experient.toolbox.chuchu;
>
> import javax.management.MalformedObjectNameException;
> import javax.management.MBeanServer;
> import javax.management.ObjectName;
>
> import org.jboss.logging.Log;
> import org.jboss.util.ServiceMBeanSupport;
>
> public class TestService extends ServiceMBeanSupport implements
> org.jboss.util.ServiceMBean, TestServiceMBean {
> private Log myLog = new Log("TestService");
>
> public TestService () {
> System.out.println("Constructing TestService");
> }
>
> public ObjectName getObjectName (MBeanServer server, ObjectName name)
> throws MalformedObjectNameException {
> return new ObjectName(OBJECT_NAME);
> }
>
> public String getName () {
> return "TestService";
> }
>
> public void startService () {
> System.out.println("Starting TestService");
> }
>
> public void stopService () {
> myLog.log ("Stopping TestService");
> }
>
> }
>
> Comparing my class to other services that come with jBoss, I realized I
> needed to implement a TestServiceMBean interface:
>
> package com.experient.toolbox.chuchu;
>
> public interface TestServiceMBean {
> public static final String OBJECT_NAME = ":service=TestService";
> }
>
> Next, I added the following line to jboss.conf so it would be recognized as
> a service:
> <MLET CODE = "com.experient.toolbox.chuchu.TestService"
> ARCHIVE="experient.jar,jboss.jar" CODEBASE="../lib/ext/"></MLET>
>
> Where experient.jar contains all of my company-proprietary class files,
> including the TestService and TestServiceMBean classes
> I just described.
>
> Finally, I tried running jBoss with the run.sh command. It starts up fine,
> and even "initializes" my TestService (calls the
> constructor), but for the life of me, I cannot get it to call my
> "startService" method. I've also tried adding this
> to jboss.dependencies in the form of:
> <service name="TestService"></service>
> but this has not helped.
>
> I'm running this on Sun 1.2.2/Redhat Linux/jBoss beta 3 (downloaded this
> morning). I'm pretty sure my classpath is set up correctly, since jBoss
> is successfully instantiating my TestService object.
>
> I've delved into org.jboss.dependency.DependencyManager a bit, and my
> TestService appears to not be starting as a result
> of this block of code in DependencyManager.startMBean(ObjectName name):
> try {
> server.invoke(name, "start", new Object[0], new String[0]);
> loaded = true;
> } catch(ReflectionException e) {
> if(e.getTargetException() instanceof NoSuchMethodException) {
> loaded = true; // This bean doesn't have a start!
> } else {
> System.out.println("Error starting service
> '"+name.getCanonicalName()+"': "+e.getTargetException());
> }
> } catch(Throwable t) {
> System.out.println("Error starting service
> '"+name.getCanonicalName()+"': "+t);
> }
>
> When jBoss tries to start TestService, the MBeanServer instance 'server'
> throws a ReflectionException with a NoSuchMethodException inside. I've
> tried looking at com.sun implementation of the MBeanServer and it's 'invoke'
> method, but that's pretty nasty. Does it try to invoke a method named
> "start"?
>
> Can anyone help a newbie out? Any help would be greatly appreciated.
>
> Thank you,
> Adam Rabung
> [EMAIL PROTECTED]
>
>
>
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