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From Martin Lichtin <lich...@yahoo.com>
Subject Re: Re: org.apache.karaf.config.core (24): Error while creating extension
Date Thu, 11 Apr 2019 15:46:16 GMT
https://issues.apache.org/jira/browse/KARAF-6234

Thanks in advance. Is this a situation Karaf can recover from or should I restart if this
issue occurs?

- Martin

On 11.04.2019 16:05, Jean-Baptiste Onofré wrote:
> Yes, it's rarely null for the service reference, but you are right, we
> should improve the code to fallback when it's null.
>
> Can you please create a Jira, I will tackle that ?
>
> Sorry about that.
>
> Regards
> JB
>
> On 11/04/2019 15:56, Martin Lichtin wrote:
>> Has anyone seen this at Karaf startup and understands what the cause is?
>>
>> 2019-04-10T20:23:42,571 | INFO  | FelixStartLevel          |
>> CommandExtension                 | mpl.action.osgi.CommandExtension 
146
>> | 44 - org.apache.karaf.shell.core - 4.1.7 | Registering commands for
>> bundle org.apache.karaf.config.core/4.1.7
>> 2019-04-10T20:23:42,578 | WARN  | FelixStartLevel          |
>> CommandExtender                  | impl.action.osgi.CommandExtender  
87
>> | 44 - org.apache.karaf.shell.core - 4.1.7 |
>> org.apache.karaf.config.core (24): Error while creating extension
>> java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
>>      at
>> org.apache.karaf.shell.impl.action.command.ManagerImpl.register(ManagerImpl.java:159)
>> [44:org.apache.karaf.shell.core:4.1.7]
>>      at
>> org.apache.karaf.shell.impl.action.osgi.CommandExtension.updateState(CommandExtension.java:168)
>> [44:org.apache.karaf.shell.core:4.1.7]
>>      at
>> org.apache.karaf.shell.impl.action.osgi.CommandExtension.start(CommandExtension.java:113)
>> [44:org.apache.karaf.shell.core:4.1.7]
>>      at
>> org.apache.felix.utils.extender.AbstractExtender.createExtension(AbstractExtender.java:254)
>> [44:org.apache.karaf.shell.core:4.1.7]
>>      at
>> org.apache.felix.utils.extender.AbstractExtender.modifiedBundle(AbstractExtender.java:227)
>> [44:org.apache.karaf.shell.core:4.1.7]
>>      at
>> org.apache.felix.utils.extender.AbstractExtender.addingBundle(AbstractExtender.java:187)
>> [44:org.apache.karaf.shell.core:4.1.7]
>>      at
>> org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:469)
>> [?:?]
>>      at
>> org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:415)
>> [?:?]
>>      at
>> org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)
>> [?:?]
>>      at
>> org.osgi.util.tracker.AbstractTracked.trackInitial(AbstractTracked.java:183)
>> [?:?]
>>      at org.osgi.util.tracker.BundleTracker.open(BundleTracker.java:156)
>> [?:?]
>>      at
>> org.apache.felix.utils.extender.AbstractExtender.startTracking(AbstractExtender.java:150)
>> [44:org.apache.karaf.shell.core:4.1.7]
>>      at
>> org.apache.felix.utils.extender.AbstractExtender.doStart(AbstractExtender.java:142)
>> [44:org.apache.karaf.shell.core:4.1.7]
>>      at
>> org.apache.felix.utils.extender.AbstractExtender.start(AbstractExtender.java:114)
>> [44:org.apache.karaf.shell.core:4.1.7]
>>      at
>> org.apache.karaf.shell.impl.console.osgi.Activator.start(Activator.java:107)
>> [44:org.apache.karaf.shell.core:4.1.7]
>>      at
>> org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:697)
>> [?:?]
>>      at org.apache.felix.framework.Felix.activateBundle(Felix.java:2240)
>> [?:?]
>>      at org.apache.felix.framework.Felix.startBundle(Felix.java:2146) [?:?]
>>      at
>> org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1373) [?:?]
>>      at
>> org.apache.felix.framework.FrameworkStartLevelImpl.run(FrameworkStartLevelImpl.java:308)
>> [?:?]
>>      at java.lang.Thread.run(Thread.java:748) [?:?]
>> Caused by: java.lang.reflect.InvocationTargetException
>>      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
>>      at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>> ~[?:?]
>>      at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>> ~[?:?]
>>      at java.lang.reflect.Method.invoke(Method.java:498) ~[?:?]
>>      at
>> org.apache.karaf.shell.impl.action.command.ManagerImpl.instantiate(ManagerImpl.java:103)
>> ~[?:?]
>>      at
>> org.apache.karaf.shell.impl.action.command.ManagerImpl.instantiate(ManagerImpl.java:60)
>> ~[?:?]
>>      at
>> org.apache.karaf.shell.impl.action.command.ManagerImpl.register(ManagerImpl.java:151)
>> ~[?:?]
>>      ... 20 more
>> Caused by: java.lang.NullPointerException: Specified service reference
>> cannot be null.
>>      at
>> org.apache.felix.framework.BundleContextImpl.ungetService(BundleContextImpl.java:479)
>> ~[?:?]
>>      at
>> org.apache.karaf.config.core.impl.MetaServiceCaller.withMetaTypeService(MetaServiceCaller.java:38)
>> ~[?:?]
>>      at
>> org.apache.karaf.config.command.completers.MetaCompleter.updateMeta(MetaCompleter.java:63)
>> ~[?:?]
>>      at
>> org.apache.karaf.config.command.completers.MetaCompleter.init(MetaCompleter.java:49)
>> ~[?:?]
>>      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
>>      at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>> ~[?:?]
>>      at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>> ~[?:?]
>>      at java.lang.reflect.Method.invoke(Method.java:498) ~[?:?]
>>      at
>> org.apache.karaf.shell.impl.action.command.ManagerImpl.instantiate(ManagerImpl.java:103)
>> ~[?:?]
>>      at
>> org.apache.karaf.shell.impl.action.command.ManagerImpl.instantiate(ManagerImpl.java:60)
>> ~[?:?]
>>      at
>> org.apache.karaf.shell.impl.action.command.ManagerImpl.register(ManagerImpl.java:151)
>> ~[?:?]
>>      ... 20 more
>> 2019-04-10T20:23:42,584 | INFO  | FelixStartLevel          |
>> CommandExtension                 | mpl.action.osgi.CommandExtension 
146
>> | 44 - org.apache.karaf.shell.core - 4.1.7 | Registering commands for
>> bundle org.apache.karaf.deployer.kar/4.1.7
>>
>> Just looking at MetaServiceCaller.withMetaTypeService(), "ref" could be
>> null but the code does not handle that.
>>
>> - Martin

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