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From "Valentin Valchev (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FELIX-4012) Sometimes the UPnP plugin fails to start due to device being removed from network
Date Wed, 03 Apr 2013 13:31:15 GMT
Valentin Valchev created FELIX-4012:

             Summary: Sometimes the UPnP plugin fails to start due to device being removed
from network
                 Key: FELIX-4012
                 URL: https://issues.apache.org/jira/browse/FELIX-4012
             Project: Felix
          Issue Type: Bug
          Components: Web Console
    Affects Versions: webconsole-upnp-plugin-1.0.2
            Reporter: Valentin Valchev
            Assignee: Valentin Valchev
             Fix For: webconsole-upnp-plugin-1.0.4

Since OSGi r4.3 it he methdod UPnPDevice.getIcons() may throw IllegalStateException if you
keep reference to device that has been removed from the network.

During startup the ServiceTracker will notify the plugin for all previously registered UPnP
devices. While processing them, a device can be removed and the reference becomes obsolete.
Then the getIcons() method will throw exception which is not caught and will cause the BundleActivator.start()
to fail. So the bundle stays in resolved state.

Here is stack trace of the problem:
java.lang.IllegalStateException: The UPnP Device was removed from the network. Device UDN:
	at com.prosyst.mbs.impl.services.upnp.cp.api.UPnPDeviceImpl.checkState(UPnPDeviceImpl.java:477)
	at com.prosyst.mbs.impl.services.upnp.cp.api.UPnPDeviceImpl.getIcons(UPnPDeviceImpl.java:316)
	at org.apache.felix.webconsole.plugins.upnp.internal.ControlServlet.addingService(ControlServlet.java:543)
	at org.apache.felix.webconsole.plugins.upnp.internal.Activator.addingService(Activator.java:88)
	at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:909)
	at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:261)
	at org.osgi.util.tracker.AbstractTracked.trackInitial(AbstractTracked.java:184)
	at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:349)
	at org.osgi.util.tracker.ServiceTracker.open(ServiceTracker.java:283)
	at org.apache.felix.webconsole.plugins.upnp.internal.Activator.start(Activator.java:48)

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