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https://issues.apache.org/activemq/browse/SMX4-424?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gert Vanthienen updated SMX4-424:
---------------------------------
Attachment: SMX4-424.diff
I think the message on the CNFE is correct: if you look at the stack traces,
you'll notice that it's ActiveMQ's ClassLoadingAwareObjectInputStream class
that is trying to load the org.apache.log4j.spi.LoggingEvent class.
With the current OSGi bundle configuration for activemq-core, it can not access
that class. The easy solution would be to add a dynamic import to the
activemq-core bundle as in the attached SMX4-424.diff file. Another option
would be to modify the ClassLoadingAwareObjectInputStream class to use OSGi's
FrameworkUtil class to determine the correct classloader.
> ClassNotFoundException attempting to use Log4J LoggingEvent
> -----------------------------------------------------------
>
> Key: SMX4-424
> URL: https://issues.apache.org/activemq/browse/SMX4-424
> Project: ServiceMix 4
> Issue Type: Bug
> Reporter: Darren Davison
> Attachments: amq-error.log, amq-headers.log, SMX4-424.diff
>
>
> I have configured applications to use Log4J's JMSAppender in order to log
> messages on a queue as follows;
> {noformat}
> log4j.appender.jms=org.apache.log4j.net.JMSAppender
> log4j.appender.jms.InitialContextFactoryName=org.apache.activemq.jndi.ActiveMQInitialContextFactory
> log4j.appender.jms.ProviderURL=tcp://localhost:61616
> log4j.appender.jms.TopicBindingName=logTopic
> log4j.appender.jms.TopicConnectionFactoryBindingName=ConnectionFactory
> {noformat}
> Each application logging statement adds a new message to topic://logTopic on
> the broker. I have a bundle deployed that attempts to route the messages
> from this topic with camel;
> {code}
> from("activemq:topic:logTopic")
> .convertBodyTo(String.class)
> .to("log:foo?level=DEBUG&showProperties=true&showHeaders=true");
> {code}
> When using servicemix 4 (Fuse 4.1.0.4), a stack trace is seen with the
> following message (enhanced using felix.log.level=4);
> {noformat}Caused by: java.lang.ClassNotFoundException: *** Class
> 'org.apache.log4j.spi.LoggingEvent'
> was not found because bundle 56 does not import 'org.apache.log4j.spi' even
> though bundle 84
> does export it. To resolve this issue, add an import for
> 'org.apache.log4j.spi' to bundle 56. ***
> {noformat}
> Bundles as follows;
> {noformat}...@root:/> osgi/list|grep 56
> [ 56] [Active ] [ ] [ 60] activemq-core (5.3.0.fuse)
> s...@root:/> osgi/list|grep 84
> [ 84] [Active ] [ ] [ 8] OPS4J Pax Logging - API (1.3.0)
> {noformat}
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