NPE with REST and Camel

mallux — Wed, 26 Jun 2013 16:32:23 GMT

Hi When starting a camel process instance from a rest post, I'm getting a Null Pointer Exception on the receive - so the instance gets stuck waiting for a receive which never arrives. I can invoke the same process from explorer and it completes fine.I've reproduced this using the async Camel exampl

Re: NPE with REST and Camel

trademak — Thu, 27 Jun 2013 13:52:36 GMT

Hi Chris,

Did you add the camel context definition to the activiti-context.xml file in the Activiti REST application?

Best regards,

Re: NPE with REST and Camel

mallux — Thu, 27 Jun 2013 14:58:12 GMT

Hi Tijs

Yes I added this to the activit-context.xml:

<import resource="activiti-camel-context.xml" />

and that file contains:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
        xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jee="http://www.springframework.org/schema/jee"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
       http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
       http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring-2.11.0.xsd
       http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd">

    <camelContext id="camelContext" xmlns="http://camel.apache.org/schema/spring">
        <packageScan>
            <package>org.activiti.camel.route</package>
        </packageScan>
    </camelContext>
    <bean id="sleepBean" class="org.activiti.camel.util.SleepBean"/>
</beans>

The routes seem to be being loaded ok during startup, and I can see the bean executing if I add some debug statements, which would seem to indicate that there is nothing fundamentally wrong with the camel part.

I'll see if I can put together a unit test which demonstrates the problem.

Chris

Re: NPE with REST and Camel

smirzai — Fri, 06 Sep 2013 11:55:23 GMT

This might be the cure.
https://github.com/Activiti/Activiti/pull/126

Could you test if it fixes your problem ?

– Saeid

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