[infinispan-dev] JOPR and managing Infinispan

[Manik Surtani]

So while in Stuttgart presenting at the JUG there, I had a chance to  
catch up with Heiko and discuss some details of upcoming management/ 
admin features for Infinispan.

Immediately, we have a JOPR plugin that allows JOPR to manage  
Infinispan instances.

Where this does need to improve though is that the JOPR plugin is  
built with an XML definitions file that is hand written.

* This should be generated as a part of the build process, by parsing  
@ManagedAttribute and at ManagedOperation annotations in Infinispan.
* @ManagedAttribute needs to contain more information:
	* Type.  JOPR has a concept of different types:
		* informational types (labels that cannot be compared or measured),  
e.g., Version number
		* measurable types (numeric) that can be compared, plotted on a  
graph, visualised in other ways, e.g., cache size
		* two sub-types of measurable types: incrementing and decrementing,  
e.g., number of commits
		* a timing-type, (represented in milliseconds as a long), e.g.,  
average replication time
	* This should be encapsulated as an enum and declared on each managed  
attribute so JOPR can provide better visuals on these
	* Some metrics need to be resettable to be meaningful, and the JOPR  
plugin would need to reset these whenever the metrics are collected.   
E.g., average replication time would need to be reset and recalculated  
every time JOPR picks up the last average and plots it on a graph.
* @ManagedAttribute also needs to be able to describe units of  
measurement
	* JOPR has some allowed values here and these should be encapsulated  
in an enum.  E.g., milliseconds.  Allows JOPR to display the  
appropriate widgets based on the unit of data being displayed.

Thoughts and comments on these, before I start writing up JIRAs for  
the above?

Cheers
--
Manik Surtani
manik at jboss.org
Lead, Infinispan
Lead, JBoss Cache
http://www.infinispan.org
http://www.jbosscache.org