[jira] [Created] (FELIX-4209) SCR seems to loads ConfigAdmin class through DS bundle

["Christoph Läubrich (JIRA)" <ji...@apache.org>]

Christoph Läubrich created FELIX-4209:
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             Summary: SCR seems to loads ConfigAdmin class through DS bundle
                 Key: FELIX-4209
                 URL: https://issues.apache.org/jira/browse/FELIX-4209
             Project: Felix
          Issue Type: Bug
          Components: Declarative Services (SCR)
    Affects Versions:  scr-1.6.0
            Reporter: Christoph Läubrich


I have the following scenario:

- Equinox Service bundle providing org.osgi.service.cm version="1.3.0"
- DS Component using  org.osgi.service.cm in version="1.3.0"
- Felix ConfiguarationAdmin providing version="1.5.0"
- Felix SCR

The component fails to initilize because of a ClassCastException that the Apache Felix CM impl can't be cast to org.osgi.service.cm.ConfigurationAdmin

{code}MESSAGE [-component name-] Cannot register Component
!STACK 0
java.lang.ClassCastException: org.apache.felix.cm.impl.ConfigurationAdminImpl cannot be cast to org.osgi.service.cm.ConfigurationAdmin
	at org.apache.felix.scr.impl.config.ConfigurationComponentRegistry.createComponentHolder(ConfigurationComponentRegistry.java:125)
	at org.apache.felix.scr.impl.BundleComponentActivator.loadDescriptor(BundleComponentActivator.java:244)
	at org.apache.felix.scr.impl.BundleComponentActivator.initialize(BundleComponentActivator.java:147)
	at org.apache.felix.scr.impl.BundleComponentActivator.<init>(BundleComponentActivator.java:111)
	at org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:285)
	at org.apache.felix.scr.impl.Activator.bundleChanged(Activator.java:203)
	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:847)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
	at org.eclipse.osgi.framework.internal.core.Framework.publishBundleEventPrivileged(Framework.java:1523)
	at org.eclipse.osgi.framework.internal.core.Framework.publishBundleEvent(Framework.java:1459)
	at org.eclipse.osgi.framework.internal.core.Framework.publishBundleEvent(Framework.java:1454)
	at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:391)
	at org.eclipse.osgi.framework.internal.core.AbstractBundle.start(AbstractBundle.java:299)
	at org.eclipse.osgi.framework.internal.core.PackageAdminImpl.resumeBundles(PackageAdminImpl.java:313)
	at org.eclipse.osgi.framework.internal.core.PackageAdminImpl.processDelta(PackageAdminImpl.java:557)
	at org.eclipse.osgi.framework.internal.core.PackageAdminImpl.doResolveBundles(PackageAdminImpl.java:253)
	at org.eclipse.osgi.framework.internal.core.PackageAdminImpl$1.run(PackageAdminImpl.java:173)
	at java.lang.Thread.run(Unknown Source) {code}
It seems as if the SCR Bundle is fetching either the service or the Class through the DS bundle and thus is getting a wrong reference.

Changing the DS providing bundle to use cm in version 1.5 fixes the issue, but of course makes it impossible for it to use an older package version.

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