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From "Jens Offenbach (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FELIX-4851) ConfigAdmin only forwards configuration events to ConfigurationListeners which are provided by bundles that are in state ACTIVE
Date Sat, 11 Apr 2015 12:50:12 GMT
Jens Offenbach created FELIX-4851:
-------------------------------------

             Summary: ConfigAdmin only forwards configuration events to ConfigurationListeners
which are provided by bundles that are in state ACTIVE
                 Key: FELIX-4851
                 URL: https://issues.apache.org/jira/browse/FELIX-4851
             Project: Felix
          Issue Type: Bug
          Components: Configuration Admin
    Affects Versions: configadmin-1.8.2
            Reporter: Jens Offenbach
             Fix For: configadmin-1.8.4


I am facing a serious problem with the Felix ConfigAdmin in combination with Felix SCR. Let
us assume that the SCR bundle becomes activated at last and activates a Component that creates
a configuration which itself is a precondition for the instantiation of another component
(ConfigurationPolicy#REQUIRE). In this case the Felix ConfigAdmin does not deliver the configuration
update event to SCR, although SCR has registered a ConfigurationListener in the OSGi Service
Registry.
The problem is caused by line 2029 of the class ConfigurationManager (Version: 1.8.3-SNAPSHOT):

if ( listenerProvider[serviceIndex].getState() == Bundle.ACTIVE && this.listeners[serviceIndex]
!= null )

In this scenario, the SCR bundle is in state STARTING and reaches the ACTIVE state directly
after all available component have been activated. Because of missing Configuration Events
caused by the Felix ConfigAdmin, SCR is not able to activate all those components whose preconditions
are actually fulfilled.
I highly recommend removing the bundle state check and change line 2029 into:

if ( this.listeners[serviceIndex] != null ).

It is up to the developer to decide, in which bundle state configuration events are considered
to be important or not. In the SCR scenario, the developers rely on the fact that configuration
events are delivered independently of their bundle state.



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