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https://issues.apache.org/jira/browse/SLING-5827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15577964#comment-15577964
 ] 

Konrad Windszus commented on SLING-5827:
----------------------------------------

Thanks, I linked the issue now.

> HealthCheckMetadata wrongly assumes (String) SERVICE_PID 
> ---------------------------------------------------------
>
>                 Key: SLING-5827
>                 URL: https://issues.apache.org/jira/browse/SLING-5827
>             Project: Sling
>          Issue Type: Bug
>          Components: Health Check
>    Affects Versions: Health Check Core 1.2.4
>            Reporter: Ivo Leitão
>            Assignee: Bertrand Delacretaz
>            Priority: Critical
>             Fix For: Health Check Core 1.2.6
>
>
> I'm getting a classcastexception in the healthcheck component. This is 
> happenning only for my components (don't know why :-S).
> I have looked at the source code and in my case at the 
> AsyncHelthCheckExecutor the code passes the lines bellow
> {code:title=AsyncHelthCheckExecutor.java|borderStyle=solid}
> ServiceReference serviceReference = event.getServiceReference();
>         final boolean isHealthCheck = 
> serviceReference.isAssignableTo(bundleContext.getBundle(), 
> HealthCheck.class.getName());
>         if (isHealthCheck) {
>             // True at my case
>         }
> {code}
> Later in the method getHealthCheckTitle of the class HealthCheckMetadata at 
> the line bellow:
> {code:title=HealthCheckMetadata.java|borderStyle=solid}
>  if (StringUtils.isBlank(name)) {
>             name = (String) ref.getProperty(Constants.SERVICE_PID);
>         }
> {code}
> ref.getProperty(Constants.SERVICE_PID) is returning an ArrayList and I have 
> the stacktrace bellow as a result
> {code:title=Stacktrace|borderStyle=solid}
> java.lang.ClassCastException: java.util.ArrayList cannot be cast to 
> java.lang.String
>       at 
> org.apache.sling.hc.util.HealthCheckMetadata.getHealthCheckTitle(HealthCheckMetadata.java:146)
>       at 
> org.apache.sling.hc.util.HealthCheckMetadata.<init>(HealthCheckMetadata.java:53)
>       at 
> org.apache.sling.hc.core.impl.executor.AsyncHealthCheckExecutor.serviceChanged(AsyncHealthCheckExecutor.java:114)
>       at 
> org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:991)
>       at 
> org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:839)
>       at 
> org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:546)
>       at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4557)
>       at org.apache.felix.framework.Felix.registerService(Felix.java:3549)
>       at 
> org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:348)
>       at 
> org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:869)
>       at 
> org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:857)
>       at 
> org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:133)
>       at 
> org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:915)
>       at 
> org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:715)
>       at 
> org.apache.felix.scr.impl.manager.AbstractComponentManager.enable(AbstractComponentManager.java:399)
>       at 
> org.apache.felix.scr.impl.config.ConfigurableComponentHolder.enableComponents(ConfigurableComponentHolder.java:676)
>       at 
> org.apache.felix.scr.impl.BundleComponentActivator.initialEnable(BundleComponentActivator.java:339)
>       at 
> org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:360)
>       at org.apache.felix.scr.impl.Activator.access$000(Activator.java:53)
>       at 
> org.apache.felix.scr.impl.Activator$ScrExtension.start(Activator.java:260)
>       at 
> org.apache.felix.utils.extender.AbstractExtender.createExtension(AbstractExtender.java:259)
>       at 
> org.apache.felix.utils.extender.AbstractExtender.modifiedBundle(AbstractExtender.java:232)
>       at 
> org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:482)
>       at 
> org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:415)
>       at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:232)
>       at 
> org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:444)
>       at 
> org.apache.felix.framework.util.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:916)
>       at 
> org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:835)
>       at 
> org.apache.felix.framework.util.EventDispatcher.fireBundleEvent(EventDispatcher.java:517)
>       at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4541)
>       at org.apache.felix.framework.Felix.startBundle(Felix.java:2172)
>       at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998)
>       at aQute.launcher.Launcher.update(Launcher.java:482)
>       at aQute.launcher.Launcher.activate(Launcher.java:381)
>       at aQute.launcher.Launcher.run(Launcher.java:275)
>       at aQute.launcher.Launcher.main(Launcher.java:132)
> {code}



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