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From Luciano Resende <luckbr1...@gmail.com>
Subject Re: Adding JMX capabilities to Tuscany (patch)
Date Tue, 31 May 2011 16:55:55 GMT
On Tue, May 31, 2011 at 9:47 AM, Raymond Feng <enjoyjava@gmail.com> wrote:
> Hi, Amindri.
> Thanks for the patch. I have a few comments:
> 1) It seems that you are trying to add the "getView()" into the model such
> as Endpoint. This approach is a bit invasive. Can we achieve the same
> function using a different way?
> * Define a ManagementProviderExtensionPoint which collects all management
> providers for given managed entities in Tuscany runtime.
> * Define an ManagementProvider SPI like:
> package org.apache.tuscany.sca.management.jmx;
> public interface ManagementProvider<M> {
> Class<M> getModelType(); // The type of the model to be managed
> <V> V getView(M model); // The view of the given model
> }
> * For managed entities in Tuscany runtime, create an implementation
> of ManagementProvider and register it using
> META-INF/services/org.apache.tuscany.sca.management.jmx.ManagementProvider
> 2) Can the MXBeans be hierarchical in addition to the flat list? Typically
> in Tuscany, the managed entities are part of a tree. For example,
> ExtensionPointRegistry --> ExtensionPoint --> Extension, or SCA Domain -->
> Composite --> Component --> Services. Maybe the hierarchy can be represented
> using the ObjectName conventions.
> 3) To access the managed entities, take a look
> at org.apache.tuscany.sca.core.assembly.impl.CompositeActivatorImpl
> and org.apache.tuscany.sca.core.DefaultExtensionPointRegistry. We might need
> to expose some of the information to JMX.
> Thanks,
> Raymond

I also have a requirement, where, in environments where JMX and other
Management APIs are not supported, can I remove the module and
everything will still work without any dependencies on the management
APIS ? This is mainly to allow us to run Tuscany in cloud environments
such Google App Engine where management APIs are NOT whitelisted on
the sandbox environment of the application.

Luciano Resende

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