View source for SMILA/Project Concepts/Generic Management And Monitoring Concept

== Description ==

Now SMILA uses separate modules for Management and for Performance Counters but both uses JMX (jconsole) as a default presentation layer.

During other components development it was found that both modules have issues.

This page is a concept about merging both modules into one generic module and to avoid issues found.

== Discussion ==


== Technical proposal ==


=== Performance Counters Module Architecture issues===

See [[SMILA/Project_Concepts/Performance_counters_API|Performance Counters API]]

* its impossible to group counters into tree legally by API ( now its used "JMX specific names" hack to group them )
* its impossible to have few counters nested in one JMX leaf
* its impossible to predict when counter will be initialized to start tracking because it initialized only on first usage

=== Management Module Architecture issues ===

This chart shows the Management architecture:

[[Image:ManagementRegistry.png]]
//TODO

* its impossible to group agents into tree

=== Common problems ===
* its impossible to mix performance counters and management agents methods nested in one JMX leaf

=== Proposal ===
Its suggested to use one registry from management module ( its more generic ) to use operations and counters.

Description and  initialization of performance counters will be in the Management Agent implementation.
It will allow to group counters (also together with management operations).

<source lang="java">
class MyAgent implements Agent{
   
   // some management operation
   public  doSomething(args[]);

   // some performance counter related to that module
   public PerformanceCounter getCounterOne();

   // other performance counter related to that module
   public PerformanceCounter getCounterTwo();
 
}
</source>

But its also possible (and suggested) to separate them because dependencies.
Mainly Management Agent using service and not used inside the service. And is visa versa for Counters Agent

<source lang="java">
class MyManagementAgent implements Agent{
  ...
   public  doSomething(args[]);
  ....

}
class MyCountersAgent implements Agent{
   public PerformanceCounter getCounterOne();
   public PerformanceCounter getCounterTwo();
}
</source>




[[Category:SMILA]]