Pierre Bourret created FELIX-4116:
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Summary: Ability to listen for component service dependencies,
providings, configuration properties, ...
Key: FELIX-4116
URL: https://issues.apache.org/jira/browse/FELIX-4116
Project: Felix
Issue Type: New Feature
Components: iPOJO
Environment: N/A
Reporter: Pierre Bourret
iPOJO offers the ability to be notified when a service arrives/is
modified/leaves a dependency. However this notifications happens _inside_ the
component, via dependency callbacks (@Bind, @Unbind, @Modified).
What would be cool is to listen to this events _externally_, with listeners on
the DependencyModel.
Is is possible right now to do this with a hack of the DependencyCallbacks
(lots of reflection, ugly code).
So what just lacks is the API to register/unregister listeners + the listener
interface.
Same thing for service providings : we should be able to be notified when a
component start/stop to provide a service. It is possible to listen to all
services with the good "instance.name", but this is not really elegant, and
there might be issues with isolated ServiceContext (composite). Registering a
listener on the ProvidedService seems a better approach IMO.
Same point for configuration, like the @Updated callback, but external.
For sure there are lots of other component things to listen to... ;)
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