[jira] [Created] (FELIX-4120) Allow external entity to interact during the service resolution

["Clement Escoffier (JIRA)" <ji...@apache.org>]

Clement Escoffier created FELIX-4120:
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             Summary: Allow external entity to interact during the service resolution
                 Key: FELIX-4120
                 URL: https://issues.apache.org/jira/browse/FELIX-4120
             Project: Felix
          Issue Type: New Feature
          Components: iPOJO
    Affects Versions: ipojo-runtime-1.10
            Reporter: Clement Escoffier
            Assignee: Clement Escoffier
             Fix For: ipojo-runtime-1.10.1


When iPOJO is tracking services, it should let extenral entities to intercept service resolution to determine the services to use.

With this feature it is possible to:

* mark services
* change filters, even build filter chains
* update the selected services dynamically

Two interception are supported:

* tracking : allow filtering out and transforming references. Transformation changes the properties of the reference
* ranking : sort the set of references

Both interceptors are exposed as services and are plugged on the service dependency dynamically. Obviously they can leave and arrive at runtime. To manage a dependency, they expose a service property named 'target' which is a LDAP filter selecting a set of dependencies.

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