[jira] [Created] (ARIES-990) NPE while establishing the root subsystem

["Thomas Watson (JIRA)" <ji...@apache.org>]

Thomas Watson created ARIES-990:
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             Summary: NPE while establishing the root subsystem
                 Key: ARIES-990
                 URL: https://issues.apache.org/jira/browse/ARIES-990
             Project: Aries
          Issue Type: Bug
          Components: Subsystem
            Reporter: Thomas Watson


I got the following NPE while the subsystem core was activating and establishing the root subsystem.  I think at the time many bundles in the 'root' subsystem may have been getting deleted:

>Caused by: java.lang.NullPointerException
>	at org.apache.aries.subsystem.core.internal.ResourceHelper.getIdentityAttribute(ResourceHelper.java:62)
>	at org.apache.aries.subsystem.core.internal.ResourceHelper.getTypeAttribute(ResourceHelper.java:92)
>	at org.apache.aries.subsystem.core.internal.ResourceInstaller.newInstance(ResourceInstaller.java:27)
>	at org.apache.aries.subsystem.core.internal.Subsystems.populateRootSubsystem(Subsystems.java:173)
>	at org.apache.aries.subsystem.core.internal.Subsystems.getRootSubsystem(Subsystems.java:131)


There is a TODO in Subsystems.populateRootSubsystem that I think is showing itself in this NPE.  In the following line of code the bundle revision may be null if the bundle got uninstalled:

  BundleRevision revision = bundle.adapt(BundleRevision.class);

I think a check for null is needed here.

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