Hi Benson,
I looked at this as well in the past. I think it might be better to log
this situation on the INFO level rather than error since the system
recovers from it anyway being optional/dynamic...
My 2c,
David
On 24 February 2016 at 15:40, Benson Margulies <ben...@basistech.com> wrote:
> I have two components that have a pseudo-circular dependency.
>
>
> Component 'WorkerInterface' has a reference like:
>
>
> @Reference(cardinality = ReferenceCardinality.MULTIPLE, policy =
> ReferencePolicy.DYNAMIC, policyOption = ReferencePolicyOption.GREEDY)
> public void setWorkerComponentService(WorkerComponentService
> workerComponentService) { ... }
>
> one of the components that provides 'WorkerComponentService' has:
>
> @Reference(cardinality = ReferenceCardinality.OPTIONAL, policy =
> ReferencePolicy.DYNAMIC, unbind = "unbindWorkerInterface")
> public void setWorkerInterface(WorkerInterface workerInterface) { .. }
>
> This all works: The second activates, the first activates, and then
> the second gets called with the reference to the first. However, along
> the way, an alarming ERROR-level log message is delivered, as below.
>
> Is there something I could do differently to avoid this? Is it worthy of a
> JIRA?
>
>
>
>
> 2016-02-24 10:25:30,963 | ERROR | lixDispatchQueue |
> rosapi-worker-rni-rnt-sdk | 51 -
> com.basistech.ws.rosapi-worker-rni-rnt-sdk - 0.8.101.v20160224031931 |
> FrameworkEvent ERROR - com.basistech.ws.rosapi-worker-rni-rnt-sdk
>
> org.osgi.framework.ServiceException: ServiceFactory.getService()
> resulted in a cycle.
>
> at
> org.apache.felix.framework.ServiceRegistry.getService(ServiceRegistry.java:301)[org.apache.felix.framework-5.4.0.jar:]
>
> at
> org.apache.felix.framework.Felix.getService(Felix.java:3699)[org.apache.felix.framework-5.4.0.jar:]
>
> at
> org.apache.felix.framework.BundleContextImpl.getService(BundleContextImpl.java:470)[org.apache.felix.framework-5.4.0.jar:]
>
> at
> org.apache.felix.scr.impl.manager.SingleRefPair.getServiceObject(SingleRefPair.java:72)[129:org.apache.felix.scr:2.0.2]
>
> at
> org.apache.felix.scr.impl.helper.BindMethod.getServiceObject(BindMethod.java:646)[129:org.apache.felix.scr:2.0.2]
>
> at
> org.apache.felix.scr.impl.manager.DependencyManager.getServiceObject(DependencyManager.java:2137)[129:org.apache.felix.scr:2.0.2]
>
> at
> org.apache.felix.scr.impl.manager.DependencyManager$SingleDynamicCustomizer.prebind(DependencyManager.java:872)[129:org.apache.felix.scr:2.0.2]
>
> at
> org.apache.felix.scr.impl.manager.DependencyManager.prebind(DependencyManager.java:1457)[129:org.apache.felix.scr:2.0.2]
>
> at
> org.apache.felix.scr.impl.manager.AbstractComponentManager.collectDependencies(AbstractComponentManager.java:983)[129:org.apache.felix.scr:2.0.2]
>
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>
