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https://issues.apache.org/jira/browse/FELIX-5107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15010550#comment-15010550
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ASF GitHub Bot commented on FELIX-5107:
---------------------------------------
GitHub user tmielke opened a pull request:
https://github.com/apache/felix/pull/40
FELIX-5107: NPE in org.apache.felix.eventadmin.impl.adapter.LogEventA…
…dapter if log msg is empty
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tmielke/felix EmptyLogMessage
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/felix/pull/40.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #40
----
commit 1a88fe0fb35308e083c37456fca9c9d406b52530
Author: Torsten Mielke <tmie...@redhat.com>
Date: 2015-11-18T09:13:14Z
FELIX-5107: NPE in org.apache.felix.eventadmin.impl.adapter.LogEventAdapter
if log msg is empty
----
> NPE in org.apache.felix.eventadmin.impl.adapter.LogEventAdapter if log msg is
> empty
> -----------------------------------------------------------------------------------
>
> Key: FELIX-5107
> URL: https://issues.apache.org/jira/browse/FELIX-5107
> Project: Felix
> Issue Type: Bug
> Components: Event Admin
> Affects Versions: eventadmin-1.4.4
> Reporter: Torsten Mielke
> Labels: event, karaf
>
> If a log event contains an empty message, it raises an NPE in
> https://github.com/apache/felix/blob/trunk/eventadmin/impl/src/main/java/org/apache/felix/eventadmin/impl/adapter/LogEventAdapter.java#L180
> As a result the Karaf container will raise
> "'org.apache.felix.eventadmin.impl.adapter.LogEventAdapter$1@2d945cb1' is
> removed as a LogListener, since it threw an exception."
> to stderr and remove this event admin instance.
> An empty log message may sound like a stupid thing to do but may happen as a
> result of e.g. running a Camel route like this one deployed in a Karaf
> container:
> {code:java}
> public class LogExceptionRoute extends RouteBuilder {
>
> @Override
> public void configure() {
> onException(Throwable.class)
> .handled(true)
> .log(LoggingLevel.ERROR, "${exception.message}");
>
> from("jetty:http://0.0.0.0:8005";).routeId("reproducer-log-exception")
> .throwException(new Exception());
> }
> }
> {code}
> The route raises an empty exception (i.e. no detail message) which then get
> logged in the onException() policy, causing the error above.
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