[jboss-user] [Management, JMX/JBoss] - How do I remotely access an mbean attribute value?

[rcolaco]

Hi there:

I have two mbeans that are deployed on my JBoss 4.0.5 GA server.
One is Tomcat's HttpRequest mbean (THM) and one is my Application mbean (AM).

For AM, I am able to remotely access an mbean attribute value using the following code snippet:

final Hashtable<String, String> env = new Hashtable<String, String>();
  | final String factory = "org.jnp.interfaces.NamingContextFactory";
  | env.put(Context.INITIAL_CONTEXT_FACTORY, factory);
  |         
  | ObjectName on = new ObjectName("jboss:service=MyAppMbean");
  | final String url = "jnp://myserver:1099";
  | env.put(Context.PROVIDER_URL, url);
  | Context ctx = new InitialContext(env);
  | MBeanServerConnection connection = (MBeanServerConnection) ctx.lookup("jmx/invoker/RMIAdaptor");
  | System.out.println(connection.getAttribute(on, "Summary"));
  | ctx.close();

However, when I attempt to connect to the Tomcat Mbean...
e.g. 
ObjectName = jboss.web:name=HttpRequest0,type=RequestProcessor,worker=http-0.0.0.0-8080

I am trying to retrieve attribute values for attributes...
- requestProcessingTime
- remoteAddr
- maxRequestUri

However, my call using...

connection.getAttribute(on, "requestProcessingTime")

... fails with the following error:

Exception in thread "Main Thread" javax.management.AttributeNotFoundException: not found: requestProcessingTime
	at org.jboss.mx.server.AbstractMBeanInvoker.getAttribute(AbstractMBeanInvoker.java:335)
	at org.jboss.mx.server.MBeanServerImpl.getAttribute(MBeanServerImpl.java:556)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

Any recommendations on how I can get the value of a specific attribute for the HttpRequest mbeans?

Also note that I include jbossall-client.jar in my remote client application's runtime classpath that I use to connect to my server.

Thanks in advance.

- Rohit

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