Hi Ron

I have been going through Glassbox quite extensivly the last month in order to 
get a good grip of what it does and how. There is something that I think it is 
missing though, and that is what I am trying to add - Expose attributes of the 
monitored beans.

If it exposed the attributes in addtion to the Glassbox introduced monitoring 
attributes (PerfStats) , I could use JConsole or any other appropriate JMX 
console to change those values at will.

To not bore all the rest on the list, maybe we should move further discussion 
to the Glassbox list.

PS. Noticed that you are not speaking at this year's Software Summit. Are you 
planning on attending?

Hermod

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Ron Bodkin
Sent: Wednesday, June 13, 2007 6:15 AM
To: [email protected]
Subject: RE: [aspectj-users] Challenge


Hi Hermod,

I'd set the attributes to point to state objects that can be updated as
backend status changes. You should have access to an introduced attribute
(even a private one) from the aspect that made the inter-type declaration,
e.g., in its advice.

Glassbox would be great for tracking availability of the systems you are
connecting to, and monitoring performance for when they are accessible. As
Kaare noted, if you want to expose some specific attributes through JMX you
have a number of options. The value of using Glassbox is when you want to
track a service-level against them. Glassbox also does have an aspect to let
you automatically register objects with JMX, which could be of some use to
you.

I'd be interested to hear how your implementation works out. And if you want
advice on how to integrate Glassbox, I'm happy to help :-)

Cheers,
Ron

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Tuesday, June 12, 2007 4:58 AM
To: [email protected]
Subject: [aspectj-users] Challenge

Hi

I have a bunch of integration beans that communicate with backend systems.
Because these backend systems might be unavailable I was thinking about
doing something in the lines of the following in order to avoid crashes or
hangs in the integration beans:

        use introduction to add som extra attributes to them.
        use constructor advice to set these attributes from a common system
that is aware of the state of the backend systems and holds informations
relevant for the communication
        use around advice for the backend calls checking the introduced
attributes in order to see if the call should proceed.

My question then goes: Is this doable? 
How do I go about getting access to the introduced attribute from the around
advice?

As an added flavour: I am contemplating using Glassbox, and then expose the
intruduced attributes in the JMX beans so that I could use a JMX console to
manage them. Doable?

Hermod



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