[AMQ-2488] Unable to access Serializable class when receiving ObjectMessage in OSGi environment

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.3.0
• Fix Version/s: 5.7.0
• Component/s: Broker
• Assignee: Claus Ibsen
• Reporter: Darren Davison
• Created: 11/Nov/09 21:06
• Updated: 18/Sep/12 13:56
• Resolved: 18/Sep/12 13:56

Description

I have configured applications to use Log4J's JMSAppender in order to log messages on a queue as follows;

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

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;

from("activemq:topic:logTopic")
  .convertBodyTo(String.class)
  .to("log:foo?level=DEBUG&showProperties=true&showHeaders=true");

When using servicemix 4 (Fuse 4.1.0.4), a stack trace is seen with the following message (enhanced using felix.log.level=4);

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. ***

Bundles as follows;

smx@root:/> osgi/list|grep 56
[  56] [Active     ] [       ] [   60] activemq-core (5.3.0.fuse)

smx@root:/> osgi/list|grep 84
[  84] [Active     ] [       ] [    8] OPS4J Pax Logging - API (1.3.0)