[SM-1926] Statistics Service throws NPE with DynamicEndpoints

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.3.1
• Fix Version/s: 3.3.2
• Component/s: servicemix-core
• Assignee: Freeman Yue Fang
• Reporter: Mark Ford
• Created: 20/Jan/10 16:43
• Updated: 22/Feb/13 11:17
• Resolved: 25/Feb/10 03:25

Description

I am seeing NPE's in the console when using dynamic endpoints with the HttpComponent.

The stacktraces don't seem to impact the message exchanges. One workaround is to simply disable the service in conf/servicemix.xml. It would be easy to patch the code to avoid the NPE but I'm not sure whether the dynamic endpoints should be included in the stats and if so why the StatsService doesn't pick up on their registration.

Trace from accepting an exchange:
WARN - DeliveryChannelImpl - Error calling listener: null
java.lang.NullPointerException
at org.apache.servicemix.jbi.monitoring.StatisticsService.onExchangeAccepted(StatisticsService.java:253)
at org.apache.servicemix.jbi.monitoring.StatisticsService$1.exchangeAccepted(StatisticsService.java:167)
at org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.processInBound(DeliveryChannelImpl.java:611)
at org.apache.servicemix.jbi.nmr.flow.AbstractFlow.doRouting(AbstractFlow.java:172)
at org.apache.servicemix.jbi.nmr.flow.seda.SedaFlow.doRouting(SedaFlow.java:168)
at org.apache.servicemix.jbi.nmr.flow.seda.SedaQueue$1.run(SedaQueue.java:134)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)

Trace from sending an exchange:
WARN - DeliveryChannelImpl - Error calling listener: null
java.lang.NullPointerException
at org.apache.servicemix.jbi.monitoring.StatisticsService.onExchangeSent(StatisticsService.java:235)
at org.apache.servicemix.jbi.monitoring.StatisticsService$1.exchangeSent(StatisticsService.java:164)
at org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.doSend(DeliveryChannelImpl.java:380)
at org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.sendSync(DeliveryChannelImpl.java:471)
at org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.sendSync(DeliveryChannelImpl.java:443)
at org.apache.servicemix.common.EndpointDeliveryChannel.sendSync(EndpointDeliveryChannel.java:115)
at org.apache.servicemix.common.endpoints.SimpleEndpoint.sendSync(SimpleEndpoint.java:74)
at org.apache.servicemix.camel.CamelConsumerEndpoint.process(CamelConsumerEndpoint.java:108)
at org.apache.servicemix.camel.JbiEndpoint$JbiProducer.process(JbiEndpoint.java:94)
at org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:151)
at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:88)
at org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:93)
at org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:110)
at org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:116)

Issue Links

• is duplicated by: SM-1162 StatisticsService - NPE