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From Jason Dillon <ja...@planet57.com>
Subject Re: When has the server started?
Date Sun, 03 Sep 2006 13:08:07 GMT
Okay, I will try that after I get some sleep.

Its just a bit confusing since I don't see any attribute on any mbean  
that looks anything like kernelFullyStarted from jconsole.

Thanks :-)

--jason


On Sep 3, 2006, at 6:00 AM, Aaron Mulder wrote:

> I think if you get the AbstractName for the LocalAttributeManager in a
> test program, there's a method on the AbstractName to get or generate
> an ObjectName, and then you could use that ObjectName to access the
> LocalAttributeManager (and therefore the kernelFullyStarted attribute)
> via JMX.  I'm not sure that will work, but it's where I would start.
> If that doesn't work, you could try invoking the
> getAttribute(abstractName, attributeName) operation on the Kernel via
> JMX (so you'd access the Kernel via JMX, but call an operation on it
> to access the LocalAttributeManager).
>
> FWIW, I think Daemon just loops over a Set to be fully generic -- I'm
> pretty sure that in practice, the LocalAttributeManager is the one and
> only PersistentConfigurationList in the server.
>
> Thanks,
>     Aaron
>
> On 9/3/06, Jason Dillon <jason@planet57.com> wrote:
>> Any idea how to actually do that?
>>
>> --jason
>>
>>
>> On Sep 3, 2006, at 5:34 AM, Aaron Mulder wrote:
>>
>> > I think kernelFullyStarted is a GBean attribute on only certain  
>> types
>> > of GBeans -- I believe PersistentConfigurationList GBeans.  It's  
>> set
>> > by Daemon.java when the startup process is complete, so it's not a
>> > kernel-level feature, but should still work for all practical
>> > purposes.  I would think you'd be able to get the property from the
>> > LocalAttributeManager via JMX.
>> >
>> > Thanks,
>> >     Aaron
>> >
>> > On 9/1/06, Jason Dillon <jason@planet57.com> wrote:
>> >> What is the best way to detect when the server has started  
>> using JMX?
>> >>
>> >> The ServerBehavior class in the deployment plugin has some code  
>> that
>> >> connects to JMX, then lists the configurations, and then takes he
>> >> first configuration and get the "kernelFulltStarted" attribute  
>> from
>> >> it... but it assumes that  
>> ConfigurationManager.listConfigurations()
>> >> returns an array of ObjectNames, which it does not.
>> >>
>> >> I also peeked at the server's JMX tree via jconsole and I don't  
>> see
>> >> any attribute or operation that matches up to  
>> "kernelFullyStarted".
>> >> There is also a strange "null" element of the tree, but I will  
>> leave
>> >> that for another day.
>> >>
>> >> So, how can I easily check of the server has started by polling  
>> a JMX
>> >> attribute?
>> >>
>> >> --jason
>> >>
>>
>>


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