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From "Roy Truelove (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CAMEL-9110) Camel not fully ready before needed in another bean's init
Date Thu, 03 Sep 2015 16:51:47 GMT

    [ https://issues.apache.org/jira/browse/CAMEL-9110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14729384#comment-14729384
] 

Roy Truelove commented on CAMEL-9110:
-------------------------------------

A user with the same issue: http://camel.465427.n5.nabble.com/SpringCamelContext-afterPropertiesSet-never-called-td5137267.html

> Camel not fully ready before needed in another bean's init
> ----------------------------------------------------------
>
>                 Key: CAMEL-9110
>                 URL: https://issues.apache.org/jira/browse/CAMEL-9110
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-core
>    Affects Versions: 2.14.1
>         Environment: MacOS
> java version "1.7.0_51"
> Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
> Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)
>            Reporter: Roy Truelove
>
> (Can reproduce using this repo: https://github.com/roytruelove/camelBug)
> I have:
> * An interface {{ExternalService}} which I've proxied using {{camel:proxy}}, pointing
to {{direct:start}}.
> * A class {{UsesExternalServiceDuringInit}} into which the proxy is injected. During
its Spring {{afterPropertiesSet()}} initialization method, the proxy is used.
> * A route which defines the {{direct:start}} endpoint.
> The full stack trace can be found below, but the core error that I get when starting
Spring is
> {code}
> No consumers available on endpoint: Endpoint[direct://start]. Exchange[Message: BeanInvocation
public abstract java.lang.String org.apache.camel.example.spring.ExternalService.someMethodOnExternalService()
with null]]
> {code}
> What it looks like is happening (and feel free to correct!) is:
> * Because {{UsesExternalServiceDuringInit}} depends on the {{camel}} bean, {{afterPropertiesSet()}}
is called on {{SpringCamelContext}}, but this does not start the routes.
> * {{afterPropertiesSet()}} is called on {{UsesExternalServiceDuringInit}}, expecting
its instance of {{ExternalService}} to be ready to use.
> * The routes are not started, so {{direct:start}} is not yet consuming and the init fails.
> From what I see the starting of the routes happens once the spring context is fully initialized,
meaning that any calls to the proxy during spring's init will fail.
> BTW I've tried this without a proxy, simply using a ProducerTemplate with the same issue.
> I don't yet have an idea for a fix / workaround - will update if I find one.
> Full stack trace if needed:
> {code}
> java.lang.reflect.InvocationTargetException
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:606)
> 	at org.apache.camel.maven.RunMojo$1.run(RunMojo.java:488)
> 	at java.lang.Thread.run(Thread.java:744)
> Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean
with name 'org.apache.camel.example.spring.UsesExternalServiceDuringInit#0' defined in file
[/Users/roytruelove/src/personal/camel-bugfix2/target/classes/META-INF/spring/camel-context.xml]:
Invocation of init method failed; nested exception is java.lang.reflect.UndeclaredThrowableException
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1514)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:293)
> 	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:290)
> 	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:191)
> 	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:636)
> 	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:934)
> 	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
> 	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
> 	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:93)
> 	at org.apache.camel.spring.Main.createDefaultApplicationContext(Main.java:217)
> 	at org.apache.camel.spring.Main.doStart(Main.java:157)
> 	at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:61)
> 	at org.apache.camel.main.MainSupport.run(MainSupport.java:149)
> 	at org.apache.camel.main.MainSupport.run(MainSupport.java:353)
> 	at org.apache.camel.spring.Main.main(Main.java:90)
> 	... 6 more
> Caused by: java.lang.reflect.UndeclaredThrowableException
> 	at com.sun.proxy.$Proxy45.someMethodOnExternalService(Unknown Source)
> 	at org.apache.camel.example.spring.UsesExternalServiceDuringInit.afterPropertiesSet(UsesExternalServiceDuringInit.java:11)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1573)
> 	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1511)
> 	... 23 more
> Caused by: org.apache.camel.component.direct.DirectConsumerNotAvailableException: No
consumers available on endpoint: Endpoint[direct://start]. Exchange[Message: BeanInvocation
public abstract java.lang.String org.apache.camel.example.spring.ExternalService.someMethodOnExternalService()
with null]]
> 	at org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:38)
> 	at org.apache.camel.component.bean.AbstractCamelInvocationHandler$1.call(AbstractCamelInvocationHandler.java:110)
> 	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
> 	at org.apache.camel.component.bean.AbstractCamelInvocationHandler.invokeWithBody(AbstractCamelInvocationHandler.java:128)
> 	at org.apache.camel.component.bean.CamelInvocationHandler.doInvokeProxy(CamelInvocationHandler.java:45)
> 	at org.apache.camel.component.bean.AbstractCamelInvocationHandler.invoke(AbstractCamelInvocationHandler.java:82)
> 	... 27 more
> {code}



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