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From "Richard S. Hall (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (FELIX-1057) stopping bundle causes NPE
Date Sat, 25 Apr 2009 17:04:31 GMT

     [ https://issues.apache.org/jira/browse/FELIX-1057?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Richard S. Hall resolved FELIX-1057.

       Resolution: Fixed
    Fix Version/s: shell.remote-1.0.5

Ok, it turned out to not be so trivial. I could have done the fix you suggested, but the root
of the issue was a little uglier since it was using a static-based approach to allow it to
pass services around to all classes in the bundle; I highly recommend against this approach.

Also, there were a handful of concurrency issues and service tracking was not correct. I ended
up pulling that code and just using ServiceTrackers to track log and shell services. Please
run remote shell through its paces to make sure I didn't break anything else, but at least
your issue is now gone after a few hours of work. :-)

Close this issue when you are satisfied. Thanks.

> stopping bundle causes NPE
> --------------------------
>                 Key: FELIX-1057
>                 URL: https://issues.apache.org/jira/browse/FELIX-1057
>             Project: Felix
>          Issue Type: Bug
>          Components: Remote Shell
>    Affects Versions:  shell.remote-1.0.4
>            Reporter: Peter Doornbosch
>            Assignee: Richard S. Hall
>            Priority: Minor
>             Fix For: shell.remote-1.0.5
> Stopping the remote shell bundle itself remotely, causes a NPE:
> Exception in thread "telnetconsole.shell remote=/" java.lang.NullPointerException
> 	at org.apache.felix.shell.remote.TerminalPrintStream.print(TerminalPrintStream.java:52)
> I admit that stopping the bundle itself over the remote connection may seem like a silly
use case, but under circumstances it is necessary (to release the socket).
> The NPE is causes by Activator.getServices() returning null. The fix is trivial:
> ServiceMediator services = Activator.getServices();
> if (services != null)
>    services.error(...)

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