On Jun 23, 2010, at 8:33 PM, David Blevins wrote:
>
> On Jun 23, 2010, at 7:58 PM, viola.lu (JIRA) wrote:
>
>> Hi, david: i have one question about this test case: currently, it just
>> listed all mbean attributes/operations information.
>> But i should get its all attributes value, so i have to connect to a jmx
>> connector server which has a jmxurl(such as
>> service:jmx:rmi://localhost/jndi/rmi://localhost:1099/jmxrmi somthing like
>> what we did in jconsole, but in this unit test case, we just use openejb
>> assembler to create a container, i am not sure whether this already started
>> a jmx connector server that i can connect using code:
>> JMXServiceURL jmxUrl = new
>> JMXServiceURL("service:jmx:rmi://localhost/jndi/rmi://localhost:1099/jmxrmi");
>> JMXConnector connector =JMXConnectorFactory.connect(jmxUrl);
>> MBeanServerConnection mbsc = connector.getMBeanServerConnection();
>> ObjectName poolName = new
>> ObjectName("openejb.management:J2EEServer=openejb,J2EEApplication=null,EJBModule=StatsModule,StatelessSessionBean=CounterBean,j2eeType=Pool,name=CounterBean");
>> Long avail = (Long)mbsc.getAttribute(poolName,"Available");
>>
>> If it doesn't start a jmx connector server port 1099, how to? is there any
>> method that i can use to start this port?thanks
>
> Hi Viola!
>
> I'm sort of a JMX beginner myself. Ideally we'd be able to invoke the mbean
> in the test case without a port open -- one would hope that this is possible
> as the mbean server is right there in the VM.
Looks like we can do like this:
ObjectName objectName = ...
MBeanServer server = ManagementFactory.getPlatformMBeanServer();
Object attribute = server.getAttribute(objectName, "Available");
Tested it out to see if it works. Seems to be fine. Not sure if this is
useful, but I thought of neat method:
private Map<String, Object> snapshot(ObjectName objectName) throws
Exception {
MBeanServer server = ManagementFactory.getPlatformMBeanServer();
Map<String, Object> data = new HashMap<String, Object>();
MBeanInfo mBeanInfo = server.getMBeanInfo(objectName);
for (MBeanAttributeInfo info : mBeanInfo.getAttributes()) {
data.put(info.getName(), server.getAttribute(objectName,
info.getName()));
}
return data;
}
Might make testing easier to deal with maps instead of all the JMX stuff
directly. Cook's choice though :) Whatever makes for good tests.
-David
