[jbosstools-issues] [JBoss JIRA] (JBIDE-25674) NPE in JolokiaConnectionWrapper.extractStatus

[Rob Stryker (JIRA)]

    [ https://issues.jboss.org/browse/JBIDE-25674?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13525509#comment-13525509 ] 

Rob Stryker commented on JBIDE-25674:
-------------------------------------

After trying to craft an email for a bit, I realized we really need to know exactly what's happening in the client before I can do so. Can you trace through and get me some color on what exactly is happening before the npe? Maybe breakpoint at the J4pRemoteException constructors? We should try to find out WHY there's no response. 

> NPE in JolokiaConnectionWrapper.extractStatus
> ---------------------------------------------
>
>                 Key: JBIDE-25674
>                 URL: https://issues.jboss.org/browse/JBIDE-25674
>             Project: Tools (JBoss Tools)
>          Issue Type: Bug
>          Components: jmx
>            Reporter: Aurélien Pupier
>
> {noformat}
> !ENTRY org.eclipse.core.jobs 4 2 2018-01-29 15:56:34.020
> !MESSAGE An internal error occurred during: "Connect Job".
> !STACK 0
> java.lang.NullPointerException
> 	at org.jboss.tools.jmx.jolokia.JolokiaConnectionWrapper.extractStatus(JolokiaConnectionWrapper.java:340)
> 	at org.jboss.tools.jmx.jolokia.JolokiaConnectionWrapper.verifyServerReachable(JolokiaConnectionWrapper.java:324)
> 	at org.jboss.tools.jmx.jolokia.JolokiaConnectionWrapper.connect(JolokiaConnectionWrapper.java:113)
> 	at org.jboss.tools.jmx.core.ConnectJob.run(ConnectJob.java:29)
> 	at org.jboss.tools.jmx.ui.internal.actions.DoubleClickAction$1.run(DoubleClickAction.java:71)
> 	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)
> {noformat}
> I put a breakpoint in org.jboss.tools.jmx.jolokia.JolokiaConnectionWrapper.verifyServerReachable() to see which exception it was and it is a "503 Service Unavailable"
> in this case the "response" is null
> 2 possibilities:
> - it is normal that it is null in this case Jboss Tools need to handle this case
> - it is not normal that it is null and in this case, it needs to be reported upstream (even if a null check might nice as a workaround for now)



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