[CAMEL-12511] camel-consul - NPE on ConsulEventConsumer start

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.21.1
• Fix Version/s: 2.21.2, 2.22.0
• Component/s: camel-consul
• Estimated Complexity: Unknown
• Assignee: Luca Burgazzoli
• Reporter: Viachaslau Tsikhanovich
• Created: 14/May/18 14:28
• Updated: 15/May/18 12:52
• Resolved: 15/May/18 12:52

Description

When doStart is called on ConsulEventConsumer it first calls doStart of a superclass AbstractConsulConsumer when scheduledExecutorService is not initialized yet.

EventWatcher run is allowed. Thus EventWatcher.watch is called with uninitialized scheduledExecutorService and failing with NPE.

Caused by: java.lang.NullPointerException: null
at org.apache.camel.component.consul.endpoint.ConsulEventConsumer$EventWatcher.watch(ConsulEventConsumer.java:76)
at org.apache.camel.component.consul.endpoint.ConsulEventConsumer$EventWatcher.watch(ConsulEventConsumer.java:68)
at org.apache.camel.component.consul.endpoint.AbstractConsulConsumer$AbstractWatcher.run(AbstractConsulConsumer.java:96)
at org.apache.camel.component.consul.endpoint.AbstractConsulConsumer.doStart(AbstractConsulConsumer.java:56)
at org.apache.camel.component.consul.endpoint.ConsulEventConsumer.doStart(ConsulEventConsumer.java:54)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:61)
at org.apache.camel.impl.DefaultCamelContext.startService(DefaultCamelContext.java:3705)
at org.apache.camel.impl.DefaultCamelContext.doStartOrResumeRouteConsumers(DefaultCamelContext.java:4023)
at org.apache.camel.impl.DefaultCamelContext.doStartRouteConsumers(DefaultCamelContext.java:3958)
at org.apache.camel.impl.DefaultCamelContext.safelyStartRouteServices(DefaultCamelContext.java:3878)
at org.apache.camel.impl.DefaultCamelContext.doStartOrResumeRoutes(DefaultCamelContext.java:3642)
at org.apache.camel.impl.DefaultCamelContext.doStartCamel(DefaultCamelContext.java:3494)
at org.apache.camel.impl.DefaultCamelContext.access$000(DefaultCamelContext.java:209)
at org.apache.camel.impl.DefaultCamelContext$2.call(DefaultCamelContext.java:3253)
at org.apache.camel.impl.DefaultCamelContext$2.call(DefaultCamelContext.java:3249)
at org.apache.camel.impl.DefaultCamelContext.doWithDefinedClassLoader(DefaultCamelContext.java:3272)
at org.apache.camel.impl.DefaultCamelContext.doStart(DefaultCamelContext.java:3249)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:61)
at org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:3165)
at org.apache.camel.spring.SpringCamelContext.start(SpringCamelContext.java:133)
...

Issue Links

• links to: GitHub Pull Request #2342
• links to: GitHub Pull Request #2342