OK, Let's assume that I insatiate the class and register it with the
MBeanServer in my code. For example,
LoggingMBean l = new Logging();
ObjectName oName = new
ObjectName("tvworks:app=test,name=Logging,type=Logging");
MangementServer.registerMBean(l, oName);
Would there be a way to do it then?
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jason
Chaffee
Sent: Tuesday, October 23, 2007 3:35 PM
To: [email protected]; [EMAIL PROTECTED]
Subject: Re: [tc-users] [tc-dev] How to cluster MBeans
That is the entire point of JMX, that you never directly have a handle
on the object. You can query and get a proxy, but you can't ever get
the actual object from the MBeanServer.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Eugene
Kuleshov
Sent: Tuesday, October 23, 2007 3:32 PM
To: [EMAIL PROTECTED]
Cc: [email protected]
Subject: Re: [tc-dev] [tc-users] How to cluster MBeans
If I understand it correctly, objects returned from the
MLet.getMBeansFromURL() call are just object names, but you need to get
your hands and cluster the actual instances that are proxied by JMX. If
you completely delegate object creation to JMX factories (MLet,
MBeanServer, etc), then it will be hard to get the objects. I took a
quick look at Sun's JMX implementation included into Java 5 and later.
Its javax.management.MBeanServer.createMBean() implementation (which is
called by MLet) delegates to some internal classes and only those
internal classes have collections of the real objects.
regards,
Eugene
Jason Chaffee wrote:
> I have attached the LoggingMBean interface and the javadoc should be
> self-explanatory. We have a custom mlet (see beolow), that we load
and
> figure out the class and ObjectName and then we use the MBeanServer
> api's to instantiate and register the MBean. We use the container's
> MBeanServer for deployed apps in that instance, in this case it is
> Tomcat. For example,
>
> <MLET archive="dummy.jar" code="com.foo.Logging"
> name="tvworks:app=test,name=Logging,type=Logging"/>
>
> javax.management.loading.MLet.getMBeansFromURL(String url);
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Eugene
> Kuleshov
> Sent: Tuesday, October 23, 2007 2:25 PM
> To: [email protected]
> Cc: [EMAIL PROTECTED]
> Subject: Re: [tc-dev] [tc-users] How to cluster MBeans
>
>
> Most likely yes. Would you mind to create a small app that will show
> how you create and use Logging
> and LoggingMBean? It will be easier to figure out what could be done
> then.
>
> regards,
> Eugene
>
>
>
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