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From "Cott Lang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CAMEL-2653) Route with only an endpoint defined causes app failure with only a vague stack trace
Date Sat, 17 Apr 2010 12:24:25 GMT

    [ https://issues.apache.org/activemq/browse/CAMEL-2653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=58924#action_58924
] 

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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