Roy Truelove created CAMEL-9110:
-----------------------------------
Summary: Camel Proxy 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.
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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