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https://issues.apache.org/activemq/browse/CAMEL-2653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=58924#action_58924
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Cott Lang commented on CAMEL-2653:
----------------------------------
Thanks, Claus.
> Route with only an endpoint defined causes app failure with only a vague
> stack trace
> ------------------------------------------------------------------------------------
>
> Key: CAMEL-2653
> URL: https://issues.apache.org/activemq/browse/CAMEL-2653
> Project: Apache Camel
> Issue Type: Bug
> Components: camel-core
> Affects Versions: 2.2.0
> Reporter: Cott Lang
> Assignee: Claus Ibsen
> Fix For: 2.3.0
>
>
> I recently upgraded an application from Camel 2.0 to Camel 2.2 and was
> greeted with this stack trace:
> {code}
> org.apache.camel.RuntimeCamelException:
> org.apache.camel.FailedToStartRouteException: java.util.NoSuchElementException
> at
> org.apache.camel.util.ObjectHelper.wrapRuntimeCamelException(ObjectHelper.java:1055)
> at
> org.apache.camel.spring.SpringCamelContext.onApplicationEvent(SpringCamelContext.java:103)
> at
> org.apache.camel.spring.CamelContextFactoryBean.onApplicationEvent(CamelContextFactoryBean.java:593)
> at
> org.springframework.context.event.SimpleApplicationEventMulticaster$1.run(SimpleApplicationEventMulticaster.java:78)
> at
> org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:49)
> at
> org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:76)
> at
> org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:274)
> at
> org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:736)
> at
> org.springframework.osgi.context.support.AbstractOsgiBundleApplicationContext.finishRefresh(AbstractOsgiBundleApplicationContext.java:235)
> at
> org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext$4.run(AbstractDelegatedExecutionApplicationContext.java:358)
> at
> org.springframework.osgi.util.internal.PrivilegedUtils.executeWithCustomTCCL(PrivilegedUtils.java:85)
> at
> org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.completeRefresh(AbstractDelegatedExecutionApplicationContext.java:320)
> at
> org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor$CompleteRefreshTask.run(DependencyWaiterApplicationContextExecutor.java:136)
> at java.lang.Thread.run(Thread.java:619)
> Caused by: org.apache.camel.FailedToStartRouteException:
> java.util.NoSuchElementException
> at
> org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:939)
> at
> org.apache.camel.spring.SpringCamelContext.maybeStart(SpringCamelContext.java:197)
> at
> org.apache.camel.spring.SpringCamelContext.onApplicationEvent(SpringCamelContext.java:101)
> ... 12 more
> Caused by: java.util.NoSuchElementException
> at java.util.AbstractList$Itr.next(AbstractList.java:350)
> at
> org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:923)
> ... 14 more
> {code}
> I attached a debugger and walked through DefaultCamelContext to locate the
> (admittedly useless) route that caused the problem, commented it out, and was
> on my way. However, it seems like this could be trapped and reported better
> to the user and save the next poor guy some time.
> I also noticed that there's no useful TRACE or DEBUG output in here that
> would have allowed anyone to easily debug it.
> {code:title=Example}
> <route>
> <from uri="activemq:queue:somequeue" />
> </route>
> {code}
> I believe this issue is related to CAMEL-2635.
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