Why MBean attributes is unavailable in JConsole
Hello all!
I'm developing MBean-service for JBoss. It deployes without any errors, but in JConsole for all MBean's attributes values are "Unavailable" (Screenshot is below). In jmx-console everything is ok.
Please, help me to understand reason.
System:
JBoss 5.1.0.GA
JDK1.5
Deployment Structure:
DISPATCHER.EAR
|_DISPATCHER.JAR
|_DispatchManagerMBean.class
|_DispatchManager.class
|_Some others classes EJB3
Code listings:
package ru.infon.malibu.ee.dispatch.service;
import org.jboss.ejb3.annotation.Management;
@Management
public interface DispatchManagerMBean {
String OBJECT_NAME = "ru.infon.malibu.ee.dispatch:service=DispatchManager";
void create();
void start();
void stop();
void destroy();
int getOverloaded();
int getCurrentSpeed();
int getMaxSpeed();
}
package ru.infon.malibu.ee.dispatch.service;
import org.jboss.ejb3.annotation.Management;
import org.jboss.ejb3.annotation.Service;
@Service(objectName = DispatchManagerMBean.OBJECT_NAME)
@Management(DispatchManagerMBean.class)
public class DispatchManagerService implements DispatchManagerMBean {
public int getCurrentSpeed() {
int currentSpeed;
...
return currentSpeed;
}
public int getOverloaded() {
return getCurrentSpeed() > getMaxSpeed() ? 1 : 0;
}
public int getMaxSpeed() {
int maxSpeed;
...
return maxSpeed;
}
....
}
In JConsole there is some problems (all attributes is unavailable). I've noticed than MBean's icon is slightly differs from other MBeans icons.
In JBoss's jmx-console everything is ok:
