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From "Alasdair Nottingham (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ARIES-776) NPEs in AriesFrameworkUtil and DefaultWorker static initializers
Date Sat, 04 Feb 2012 22:55:59 GMT

    [ https://issues.apache.org/jira/browse/ARIES-776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13200582#comment-13200582
] 

Alasdair Nottingham commented on ARIES-776:
-------------------------------------------

It looks like this has been "fixed" already. By "fixed" I mean one of the two copies of AriesFrameworkUtil
has been fixed. I'm fixing the other one using this defect.
                
> NPEs in AriesFrameworkUtil and DefaultWorker static initializers
> ----------------------------------------------------------------
>
>                 Key: ARIES-776
>                 URL: https://issues.apache.org/jira/browse/ARIES-776
>             Project: Aries
>          Issue Type: Bug
>          Components: Util
>    Affects Versions: 0.4
>         Environment: Using Pojosr 0.6
>            Reporter: Stan Lewis
>            Priority: Minor
>         Attachments: ARIES-776.txt
>
>
> Working on getting some tests together using pojosr but the following exception prevented
some services from starting properly:
> Running org.fusesource.fabric.service.FabricServiceImplTest
> ERROR | Blueprint Extender: 2 | Unable to start blueprint container for bundle org.apache.karaf.admin.management
> org.osgi.service.blueprint.container.ComponentDefinitionException: java.lang.ExceptionInInitializerError
> 	at org.apache.aries.blueprint.container.ReferenceRecipe.internalCreate(ReferenceRecipe.java:98)
> 	at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:64)
> 	at org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:219)
> 	at org.apache.aries.blueprint.container.BlueprintRepository.createAll(BlueprintRepository.java:147)
> 	at org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents(BlueprintContainerImpl.java:640)
> 	at org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:331)
> 	at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:227)
> 	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
> 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> 	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
> 	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:680)
> Caused by: java.lang.ExceptionInInitializerError
> 	at org.apache.aries.proxy.impl.AbstractProxyManager.getClassLoader(AbstractProxyManager.java:93)
> 	at org.apache.aries.proxy.impl.JdkProxyManager.createNewProxy(JdkProxyManager.java:32)
> 	at org.apache.aries.proxy.impl.AbstractProxyManager.createProxy(AbstractProxyManager.java:50)
> 	at org.apache.aries.proxy.impl.AbstractProxyManager.createProxy(AbstractProxyManager.java:39)
> 	at org.apache.aries.blueprint.container.AbstractServiceReferenceRecipe.createProxy(AbstractServiceReferenceRecipe.java:236)
> 	at org.apache.aries.blueprint.container.ReferenceRecipe.internalCreate(ReferenceRecipe.java:82)
> 	... 14 more
> Caused by: java.lang.NullPointerException
> 	at org.apache.aries.util.AriesFrameworkUtil.<clinit>(AriesFrameworkUtil.java:34)
> 	... 20 more
> Avoiding the above NPE in AriesFrameworkUtil yielded a second NPE in DefaultWorker's
static initializer:
> ERROR | Blueprint Extender: 3 | Unable to start blueprint container for bundle org.apache.karaf.admin.management
> org.osgi.service.blueprint.container.ComponentDefinitionException: java.lang.ExceptionInInitializerError
> 	at org.apache.aries.blueprint.container.ReferenceRecipe.internalCreate(ReferenceRecipe.java:100)
> 	at org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:71)
> 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> 	at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:79)
> 	at org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:220)
> 	at org.apache.aries.blueprint.container.BlueprintRepository.createAll(BlueprintRepository.java:154)
> 	at org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents(BlueprintContainerImpl.java:630)
> 	at org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:326)
> 	at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:228)
> 	at org.apache.aries.blueprint.utils.threading.impl.DiscardableRunnable.run(DiscardableRunnable.java:48)
> 	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
> 	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> 	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
> 	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> 	at java.lang.Thread.run(Thread.java:680)
> Caused by: java.lang.ExceptionInInitializerError
> 	at org.apache.aries.util.AriesFrameworkUtil.<clinit>(AriesFrameworkUtil.java:44)
> 	at org.apache.aries.proxy.impl.AbstractProxyManager.getClassLoader(AbstractProxyManager.java:130)
> 	at org.apache.aries.proxy.impl.JdkProxyManager.createNewProxy(JdkProxyManager.java:36)
> 	at org.apache.aries.proxy.impl.AbstractProxyManager.createDelegatingInterceptingProxy(AbstractProxyManager.java:75)
> 	at org.apache.aries.proxy.impl.AbstractProxyManager.createDelegatingProxy(AbstractProxyManager.java:40)
> 	at org.apache.aries.blueprint.container.AbstractServiceReferenceRecipe.createProxy(AbstractServiceReferenceRecipe.java:237)
> 	at org.apache.aries.blueprint.container.ReferenceRecipe.internalCreate(ReferenceRecipe.java:84)
> 	... 18 more
> Caused by: java.lang.NullPointerException
> 	at org.apache.aries.util.internal.DefaultWorker.<clinit>(DefaultWorker.java:42)
> 	... 25 more
> Avoiding this NPE allows me to get a valid service reference from the pojosr registry
for the service I want to test, so I'm attaching a patch for review, would be good to avoid
these NPEs in any case since it's not obvious what's wrong when they occur.

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