Drools with fuse : Getting ClassNotFoundException: for DroolsPolicy

[abhijitpassi]

Hi,

I am trying to use drools with fuse.

below is my camel-context.xml file

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but on deployment getting the below exception.

FuseESB:karaf@root> Exception in thread "SpringOsgiExtenderThread-12" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'camel-9': Invocation of init method failed; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find cl

ass for bean with name 'droolsPolicy' defined in URL bundle://260.21:0/META-INF/spring/camel-context.xml; nested exception is java.lang.ClassNotFoundException: org.drools.camel.component.DroolsPolicy not found from bundle

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1422)

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:518)

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:455)

        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:293)

        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)

        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:290)

        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:192)

        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567)

        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)

        at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.access$1600(AbstractDelegatedExecutionApplicationContext.java:69)

        at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext$4.run(AbstractDelegatedExecutionApplicationContext.java:355)

        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:132)

        at java.lang.Thread.run(Thread.java:662)

Caused by: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class for bean with name 'droolsPolicy' defined in URL bundle://260.21:0/META-INF/spring/camel-context.xml; nested exception is java.lang.ClassNotFoundException: org.dro

ols.camel.component.DroolsPolicy not found from bundle

        at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1261)

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:575)

        at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1330)

        at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:317)

        at org.springframework.context.support.AbstractApplicationContext.getBeanNamesForType(AbstractApplicationContext.java:1136)

        at org.apache.camel.spring.CamelContextFactoryBean.getBeanForType(CamelContextFactoryBean.java:173)

        at org.apache.camel.core.xml.AbstractCamelContextFactoryBean.afterPropertiesSet(AbstractCamelContextFactoryBean.java:140)

        at org.apache.camel.osgi.CamelContextFactoryBean.afterPropertiesSet(CamelContextFactoryBean.java:64)

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1479)

        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1419)

        ... 14 more

Caused by: java.lang.ClassNotFoundException: org.drools.camel.component.DroolsPolicy not found from bundle

        at org.springframework.osgi.util.BundleDelegatingClassLoader.findClass(BundleDelegatingClassLoader.java:103)

        at org.springframework.osgi.util.BundleDelegatingClassLoader.loadClass(BundleDelegatingClassLoader.java:156)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)

        at org.springframework.util.ClassUtils.forName(ClassUtils.java:257)

        at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:408)

        at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1282)

        at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1253)

        ... 23 more

Caused by: java.lang.ClassNotFoundException: org.drools.camel.component.DroolsPolicy not found by drlexample

        at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1467)

        at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:73)

        at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:1850)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)

        at org.apache.felix.framework.Felix.loadBundleClass(Felix.java:1745)

        at org.apache.felix.framework.BundleImpl.loadClass(BundleImpl.java:929)

        at org.springframework.osgi.util.BundleDelegatingClassLoader.findClass(BundleDelegatingClassLoader.java:99)

        ... 29 more

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The corresponding org.drools.camel.component.DroolsPolicy jar file "drools-camel-5.2.0.M2.jar"  is present in the repository.

[ffang]

Hi,

When you say "The corresponding org.drools.camel.component.DroolsPolicy jar file "drools-camel-5.2.0.M2.jar" is present in the repository." Do you mean the drools-camel-5.2.0.M2.jar bundle already get installed into OSGi container?

Also you need ensure your camel router bundle already import package org.drools.camel.component.

Freeman

[abhijitpassi]

Thanks for the reply.

Yes,  the drools-camel-5.2.0.M2.jar bundle is installed into OSGi

FuseESB:karaf@root> osgi:list |grep drools

drools-camel (5.2.0.M2)

drools-spring (5.2.0.M2)

Can you guide for , how to import package org.drools.camel.component

in camel router bundle.

[ffang]

Hi,

How you build your camel router bundle?

If you're using maven, you can use maven-bundle-plugin which you can configure the OSGi metadata header you want.

As you have

in your spring-dm configuration, I believe add maven-bundle-plugin could be able to add Import-Package org.drools.camel.component automatically.

Freeman

[abhijitpassi]

Yes , I did that as well... below is my plugin from pom.xml

Still getting the same exception

[ffang]

Hi,

Could you also post your customer camel router bundle OSGi metadata header?

You can use

osgi:headers bundle_id_for_your_camel_router

Freeman

[abhijitpassi]

Hi,

I am able to solve the above error,of ClassNotFoundException for DroolsPolicy.

After that now i am facing some new error like java.lang.NoSuchMethodError

below is details of the error

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ESB:karaf@root> Exception in thread "SpringOsgiExtenderThread-4" java.lang.NoSuchMethodError: org.apache.camel.model.BeanDefinition.setBeanType(Ljava/lang/Class;)V

    at org.drools.camel.component.DroolsPolicy.augmentNodes(DroolsPolicy.java:119)

    at org.drools.camel.component.DroolsPolicy.beforeWrap(DroolsPolicy.java:75)

    at org.apache.camel.model.PolicyDefinition.createProcessor(PolicyDefinition.java:129)

    at org.apache.camel.model.ProcessorDefinition.makeProcessor(ProcessorDefinition.java:440)

    at org.apache.camel.model.ProcessorDefinition.addRoutes(ProcessorDefinition.java:178)

    at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:871)

    at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:171)

    at org.apache.camel.impl.DefaultCamelContext.startRoute(DefaultCamelContext.java:702)

    at org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:1729)

    at org.apache.camel.impl.DefaultCamelContext.doStartCamel(DefaultCamelContext.java:1523)

    at org.apache.camel.impl.DefaultCamelContext.doStart(DefaultCamelContext.java:1413)

    at org.apache.camel.spring.SpringCamelContext.doStart(SpringCamelContext.java:181)

    at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:60)

    at org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:1381)

    at org.apache.camel.spring.SpringCamelContext.maybeStart(SpringCamelContext.java:230)

    at org.apache.camel.spring.SpringCamelContext.onApplicationEvent(SpringCamelContext.java:120)

    at org.apache.camel.spring.CamelContextFactoryBean.onApplicationEvent(CamelContextFactoryBean.java:242)

    at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:97)

    at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:303)

    at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:911)

    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:132)

*****************************************************************

I checked the BeanDefinition.class from org.apache.camel.model (camel-core-2.9.0.fuse-7-061.jar) file

this class contains the method

public void setBeanType(String beanType) {

    this.beanType = beanType;

  }

Where as DroolsPolicy class from drools-camel-5.2.0.M2.jar is using

beanDef.setBeanType(PreCxfrs.class);

So , I wanted to know , is there any updated version of camel-core-2.9.0.fuse-7-061.jar is present

[njiang]

Camel 2.9.x doesn't has the BeanDefinition.setBeanType(Ljava/lang/Class;) method. It was add since Camel 2.10.0. You may need to upgrade the Camel version yourself.

Willem

[abhijitpassi]

Hi,

I have upgraded the camel version 2.10.0 with hot deployment of camel-core-2.10.0.jar

but still getting the same exception , still it is referring the old camel-core-2.9.

I tried with uninstalling the camel-core-2.9 , this results in failure of some other services.

Kindly suggest

[ffang]

Hi,

I'd say upgrade to camel 2.10 yourself isn't that easy, a lot of dependencies need upgrade as well.

I think you can start with install camel 2.10 features.xml and install camel features which you need from there.

Freeman

[abhijitpassi]

Hi,

I tried to install camel-core-2.10 with the below command

FuseESB:karaf@root> features:addurl mvn:org.apache.camel.karaf/apache-camel/2.10.0/xml/features

FuseESB:karaf@root> features:list |grep camel-core

camel-core                            camel-2.9.0.fuse-7-061

camel-core                            camel-2.10.0

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But on installation getting the below error

FuseESB:karaf@root> features:install camel-core

Error executing command: Can not resolve feature:

Unsatisfied requirement(s):

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   package:(&(package=jline.console.completer)(version>=2.7.0)(!(version>=3.0.0)))

      camel-karaf-commands

FuseESB:karaf@root>

[ffang]

Hi,

As I mentioned, a lot of dependencies need get upgraded, obviously jline.console.completer is one of them, but definitely not the only one.

jline.console.complete is from karaf.shell.console bundle and jline.console.complete 2.7 need a higher version of karaf.

Which means it's hard for you to deploy camel 2.10 in current FUSE ESB 7.0.1.

FUSE ESB 7.1 is aiming to support Camel 2.10 and CXF 2.6 OOB, you may need wait for FUSE ESB 7.1.

Freeman