由于循环依赖性而导致驼峰启动时发生错误

时间：2016-07-04 11:03:25

标签： apache-camel apache-karaf apache-servicemix

在Karaf上放置一个包（使用camel）我看到以下异常。以下异常仅在捆绑包启动时出现。之后一切正常。该例程似乎不会影响我们的功能。问题出现在camel 2.16.1（部署在servicemix 6.1.0）和camel 2.16.3上（部署在servicemix 7.0.0M2上）。

我的blueprint分为三个文件。它们的简化版本如下所示： -

  1. blueprint.xml放置here。
  2. productBeans.xml放置here。
  3. camelContext.xml放置here。

    4. 有些人可以告诉我为什么在捆绑启动期间出现此异常？它从下面的堆栈跟踪看起来是因为某些循环依赖。我怎么能绕过这个？

    2016-07-04 11:29:37,497 | ERROR | mix-6.1.0/deploy | BlueprintCamelContext            | 143 - org.apache.camel.camel-blueprint - 2.16.1 | {{bundle.id,143}{bundle.name,org.apache.camel.camel-blueprint}{bundle.version,2.16.1}} | Error occurred during starting Camel: CamelContext(camel-1) due Failed to create route orchestrator-service-route at: >>> process[ref:jsonRPCProcessor] <<< in route: Route(orchestrator-service-route)[[From[jetty:http://0.0.0.0... because of Cannot lookup: jsonRPCProcessor from registry: org.apache.camel.blueprint.BlueprintContainerRegistry@7b081b97 with expected type: interface org.apache.camel.Processor due: [BeanRecipe[name='myTemplate'], BeanRecipe[name='.camelBlueprint.bean.factory.myTemplate'], BeanRecipe[name='camel-1'], BeanRecipe[name='myTemplate']]
org.apache.camel.FailedToCreateRouteException: Failed to create route orchestrator-service-route at: >>> process[ref:jsonRPCProcessor] <<< in route: Route(orchestrator-service-route)[[From[jetty:http://0.0.0.0... because of Cannot lookup: jsonRPCProcessor from registry: org.apache.camel.blueprint.BlueprintContainerRegistry@7b081b97 with expected type: interface org.apache.camel.Processor due: [BeanRecipe[name='myTemplate'], BeanRecipe[name='.camelBlueprint.bean.factory.myTemplate'], BeanRecipe[name='camel-1'], BeanRecipe[name='myTemplate']]
    at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:1072)
    at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:196)
    at org.apache.camel.impl.DefaultCamelContext.startRoute(DefaultCamelContext.java:947)
    at org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:3258)
    at org.apache.camel.impl.DefaultCamelContext.doStartCamel(DefaultCamelContext.java:2981)
    at org.apache.camel.impl.DefaultCamelContext.access$000(DefaultCamelContext.java:175)
    at org.apache.camel.impl.DefaultCamelContext$2.call(DefaultCamelContext.java:2812)
    at org.apache.camel.impl.DefaultCamelContext$2.call(DefaultCamelContext.java:2808)
    at org.apache.camel.impl.DefaultCamelContext.doWithDefinedClassLoader(DefaultCamelContext.java:2831)
    at org.apache.camel.impl.DefaultCamelContext.doStart(DefaultCamelContext.java:2808)
    at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:61)
    at org.apache.camel.impl.DefaultCamelContext.start(DefaultCamelContext.java:2777)
    at org.apache.camel.blueprint.BlueprintCamelContext.start(BlueprintCamelContext.java:180)[143:org.apache.camel.camel-blueprint:2.16.1]
    at org.apache.camel.blueprint.BlueprintCamelContext.maybeStart(BlueprintCamelContext.java:212)[143:org.apache.camel.camel-blueprint:2.16.1]
    at org.apache.camel.blueprint.BlueprintCamelContext.serviceChanged(BlueprintCamelContext.java:150)[143:org.apache.camel.camel-blueprint:2.16.1]
    at org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:932)[org.apache.felix.framework-4.2.1.jar:]
    at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:793)[org.apache.felix.framework-4.2.1.jar:]
    at org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:543)[org.apache.felix.framework-4.2.1.jar:]
    at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4419)[org.apache.felix.framework-4.2.1.jar:]
    at org.apache.felix.framework.Felix.registerService(Felix.java:3423)[org.apache.felix.framework-4.2.1.jar:]
    at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:346)
    at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:352)
    at org.apache.camel.blueprint.BlueprintCamelContext.init(BlueprintCamelContext.java:100)[143:org.apache.camel.camel-blueprint:2.16.1]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[:1.8.0_77]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)[:1.8.0_77]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.8.0_77]
    at java.lang.reflect.Method.invoke(Method.java:498)[:1.8.0_77]
    at org.apache.aries.blueprint.utils.ReflectionUtils.invoke(ReflectionUtils.java:299)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.invoke(BeanRecipe.java:956)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.runBeanProcInit(BeanRecipe.java:712)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.internalCreate2(BeanRecipe.java:824)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:787)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:79)[15:org.apache.aries.blueprint.core:1.4.4]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_77]
    at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:88)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:247)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintRepository.createInstance(BlueprintRepository.java:230)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintRepository.create(BlueprintRepository.java:145)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintContainerImpl.getComponentInstance(BlueprintContainerImpl.java:754)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.camel.blueprint.CamelProducerTemplateFactoryBean.getCamelContextWithId(CamelProducerTemplateFactoryBean.java:49)
    at org.apache.camel.core.xml.AbstractCamelFactoryBean.afterPropertiesSet(AbstractCamelFactoryBean.java:54)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[:1.8.0_77]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)[:1.8.0_77]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.8.0_77]
    at java.lang.reflect.Method.invoke(Method.java:498)[:1.8.0_77]
    at org.apache.aries.blueprint.utils.ReflectionUtils.invoke(ReflectionUtils.java:299)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.invoke(BeanRecipe.java:956)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.runBeanProcInit(BeanRecipe.java:712)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.internalCreate2(BeanRecipe.java:824)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:787)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:79)[15:org.apache.aries.blueprint.core:1.4.4]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_77]
    at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:88)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.getInstance(BeanRecipe.java:280)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.internalCreate2(BeanRecipe.java:806)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:787)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:79)[15:org.apache.aries.blueprint.core:1.4.4]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_77]
    at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:88)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.di.RefRecipe.internalCreate(RefRecipe.java:62)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:106)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.setProperty(BeanRecipe.java:931)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.setProperties(BeanRecipe.java:905)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.setProperties(BeanRecipe.java:886)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.internalCreate2(BeanRecipe.java:820)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:787)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:79)[15:org.apache.aries.blueprint.core:1.4.4]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_77]
    at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:88)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:247)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintRepository.createAll(BlueprintRepository.java:183)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents(BlueprintContainerImpl.java:682)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:377)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:269)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintExtender.createContainer(BlueprintExtender.java:294)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintExtender.createContainer(BlueprintExtender.java:263)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintExtender.modifiedBundle(BlueprintExtender.java:253)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.customizerModified(BundleHookBundleTracker.java:500)[9:org.apache.aries.util:1.1.1]
    at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.customizerModified(BundleHookBundleTracker.java:433)[9:org.apache.aries.util:1.1.1]
    at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$AbstractTracked.track(BundleHookBundleTracker.java:725)[9:org.apache.aries.util:1.1.1]
    at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.bundleChanged(BundleHookBundleTracker.java:463)[9:org.apache.aries.util:1.1.1]
    at org.apache.aries.util.tracker.hook.BundleHookBundleTracker$BundleEventHook.event(BundleHookBundleTracker.java:422)[9:org.apache.aries.util:1.1.1]
    at org.apache.felix.framework.util.SecureAction.invokeBundleEventHook(SecureAction.java:1103)[org.apache.felix.framework-4.2.1.jar:]
    at org.apache.felix.framework.util.EventDispatcher.createWhitelistFromHooks(EventDispatcher.java:695)[org.apache.felix.framework-4.2.1.jar:]
    at org.apache.felix.framework.util.EventDispatcher.fireBundleEvent(EventDispatcher.java:483)[org.apache.felix.framework-4.2.1.jar:]
    at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4403)[org.apache.felix.framework-4.2.1.jar:]
    at org.apache.felix.framework.Felix.startBundle(Felix.java:2092)[org.apache.felix.framework-4.2.1.jar:]
    at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:955)[org.apache.felix.framework-4.2.1.jar:]
    at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:942)[org.apache.felix.framework-4.2.1.jar:]
    at org.apache.karaf.features.internal.FeaturesServiceImpl.startBundle(FeaturesServiceImpl.java:518)[20:org.apache.karaf.features.core:3.0.5]
    at org.apache.karaf.features.internal.FeaturesServiceImpl.installFeatures(FeaturesServiceImpl.java:476)[20:org.apache.karaf.features.core:3.0.5]
    at org.apache.karaf.features.internal.FeaturesServiceImpl.installFeature(FeaturesServiceImpl.java:417)[20:org.apache.karaf.features.core:3.0.5]
    at Proxy1be55f4b_f63a_43b3_883f_77a48747d768.installFeature(Unknown Source)[:]
    at Proxy1fa9f34f_3928_4828_8542_9d785df163bd.installFeature(Unknown Source)[:]
    at org.apache.karaf.kar.internal.KarServiceImpl.installFeatures(KarServiceImpl.java:215)[160:org.apache.karaf.kar.core:3.0.5]
    at org.apache.karaf.kar.internal.KarServiceImpl.install(KarServiceImpl.java:96)[160:org.apache.karaf.kar.core:3.0.5]
    at org.apache.karaf.kar.internal.KarServiceImpl.install(KarServiceImpl.java:84)[160:org.apache.karaf.kar.core:3.0.5]
    at Proxya6f8b1d5_e9a2_4e1b_a105_1552c365b9de.install(Unknown Source)[:]
    at Proxye3575645_14c4_4cf9_8d71_16cd6e82b1a0.install(Unknown Source)[:]
    at org.apache.karaf.deployer.kar.KarArtifactInstaller.install(KarArtifactInstaller.java:50)[162:org.apache.karaf.deployer.kar:3.0.5]
    at Proxy6b7a1495_9239_4ff3_b9ed_1fd58a17750b.install(Unknown Source)[:]
    at org.apache.felix.fileinstall.internal.DirectoryWatcher.install(DirectoryWatcher.java:931)[7:org.apache.felix.fileinstall:3.5.0]
    at org.apache.felix.fileinstall.internal.DirectoryWatcher.install(DirectoryWatcher.java:865)[7:org.apache.felix.fileinstall:3.5.0]
    at org.apache.felix.fileinstall.internal.DirectoryWatcher.doProcess(DirectoryWatcher.java:482)[7:org.apache.felix.fileinstall:3.5.0]
    at org.apache.felix.fileinstall.internal.DirectoryWatcher.process(DirectoryWatcher.java:358)[7:org.apache.felix.fileinstall:3.5.0]
    at org.apache.felix.fileinstall.internal.DirectoryWatcher.run(DirectoryWatcher.java:310)[7:org.apache.felix.fileinstall:3.5.0]
Caused by: org.apache.camel.NoSuchBeanException: Cannot lookup: jsonRPCProcessor from registry: org.apache.camel.blueprint.BlueprintContainerRegistry@7b081b97 with expected type: interface org.apache.camel.Processor due: [BeanRecipe[name='myTemplate'], BeanRecipe[name='.camelBlueprint.bean.factory.myTemplate'], BeanRecipe[name='camel-1'], BeanRecipe[name='myTemplate']]
    at org.apache.camel.impl.CompositeRegistry.lookupByNameAndType(CompositeRegistry.java:62)
    at org.apache.camel.impl.PropertyPlaceholderDelegateRegistry.lookupByNameAndType(PropertyPlaceholderDelegateRegistry.java:63)
    at org.apache.camel.util.CamelContextHelper.lookup(CamelContextHelper.java:137)
    at org.apache.camel.util.CamelContextHelper.mandatoryLookup(CamelContextHelper.java:157)
    at org.apache.camel.impl.DefaultRouteContext.mandatoryLookup(DefaultRouteContext.java:151)
    at org.apache.camel.model.ProcessDefinition.createProcessor(ProcessDefinition.java:95)
    at org.apache.camel.model.ProcessorDefinition.makeProcessorImpl(ProcessorDefinition.java:534)
    at org.apache.camel.model.ProcessorDefinition.makeProcessor(ProcessorDefinition.java:495)
    at org.apache.camel.model.ProcessorDefinition.addRoutes(ProcessorDefinition.java:219)
    at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:1069)
    ... 105 more
Caused by: org.apache.aries.blueprint.di.CircularDependencyException: [BeanRecipe[name='myTemplate'], BeanRecipe[name='.camelBlueprint.bean.factory.myTemplate'], BeanRecipe[name='camel-1'], BeanRecipe[name='myTemplate']]
    at org.apache.aries.blueprint.container.BlueprintRepository.push(BlueprintRepository.java:343)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:71)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:247)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintRepository.createInstance(BlueprintRepository.java:230)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintRepository.create(BlueprintRepository.java:145)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.aries.blueprint.container.BlueprintContainerImpl.getComponentInstance(BlueprintContainerImpl.java:754)[15:org.apache.aries.blueprint.core:1.4.4]
    at org.apache.camel.blueprint.BlueprintContainerRegistry.lookupByNameAndType(BlueprintContainerRegistry.java:54)
    at org.apache.camel.impl.CompositeRegistry.lookupByNameAndType(CompositeRegistry.java:56)
    ... 114 more

    编辑 - 似乎错误是因为jsonRPCProcessor正在使用myTemplate，如下所示： - 

    <bean id="jsonRPCProcessor"     class="com.j1.orchestratorservice.basecomponent.processor.JSONRPCProcessor">
        <argument ref="myTemplate" />
        <argument>
            <map>           
                <!-- Product End Points -->
                <entry key="Product.createProducts" value-ref="createProductsWFInfo" />             
            </map>
        </argument>
        <argument ref="exceptionHandler" />
    </bean>

    而myTemplate中的camelContext定义为jsonRPCProcessor，后者又使用<camelContext xmlns="http://camel.apache.org/schema/blueprint" useMDCLogging="true"> <template id="myTemplate" /> <route id="orchestrator-service-route"> <from uri="jetty:http://0.0.0.0:8888/orchestratorservice" /> <process ref="jsonRPCProcessor" /> </route> <route id="file-upload-service-route"> <from uri="jetty:http://0.0.0.0:8889/fileuploadservice?enableMultipartFilter=true" /> <process ref="fileUploadProcessor" /> </route> ... </camelContext> ，如下所示： - 

    producer

    我尝试在link中提到的自定义处理器中设置producer。有人可以建议我在我的自定义jsonRPCProcessor中设置sudo pip install -e .的其他方法，以便它不会导致任何循环依赖吗？

1 个答案:

答案 0 :(得分：0)

我可以通过从myTemplate和jsonRPCProcesor移除fileUploadProcessor来解决此问题。现在我的jsonRPCProcessor看起来像下面这样： - 

<bean id="jsonRPCProcessor" class="com.j1.orchestratorservice.basecomponent.processor.JSONRPCProcessor">
    <argument>
        <map>           
            <entry key="Product.createProducts" value-ref="createProductsWFInfo" />
        </map>
    </argument>
    <argument ref="exceptionHandler" />
</bean>

使用ProducerTemplate在我的代码中注释@EndPointInject（在基类中）。如下所示： - 

@EndpointInject
protected ProducerTemplate myTemplate;
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