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  1. Red Hat Fuse
  2. ENTESB-14354

BeanInfo binding to interface instead of concrete method

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Major Major
    • fuse-6.3-R17-GA
    • fuse-6.3-R16-GA
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      Reproducer attached.

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      Reproducer attached.

      Using Camel 2.17.0.redhat-630446 (Fuse 6.3.0 R16), the BeanInfo class is skipping the class method introspection (ExchangeBasedDynamicRouter.initialiseEndpoints) and, as a result, it is binding to the generic interface with a runtime ClassCastException. Instead, the binding process is correct using Camel 2.15.1.redhat-621084 (Fuse 6.2.1).

      Here we have the following class hierarchy:

      MyDynamicRouter (generic interface)
    |_ ExchangeBasedDynamicRouter (abstract class)
        |_ ReportingDynamicRouter

      The method generateEndpoints is defined by the interface and implemented by the abstract class. For some reason Camel 2.17 BeanInfo filter out the abstract class which contains the actual method implementation.

      If you trace the MethodInfo invocation you have:

      # 2.15
2020-07-17 17:13:01,715 [ main] TRACE amel.component.bean.MethodInfo - >>>> invoking: public java.util.List it.fvaleri.integ.ExchangeBasedDynamicRouter.initialiseEndpoints(org.apache.camel.Exchange) on bean: it.fvaleri.integ.ReportingDynamicRouter@3f191845 with arguments: \{Exchange[Message: foo]} for exchange: Exchange[Message: foo]

# 2.17
2020-07-17 17:10:28,789 [ main] TRACE amel.component.bean.MethodInfo - >>>> invoking: public abstract java.util.List it.fvaleri.integ.DynamicRouter.initialiseEndpoints(java.lang.Object) on bean: it.fvaleri.integ.ReportingDynamicRouter@5032714f with arguments: \{foo} for exchange: Exchange[]

      Complete stack:

      java.lang.ClassCastException: java.lang.String cannot be cast to org.apache.camel.Exchange
	at it.fvaleri.integ.ExchangeBasedDynamicRouter.initialiseEndpoints(ExchangeBasedDynamicRouter.java:9) ~[classes/:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_232]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_232]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_232]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_232]
	at org.apache.camel.component.bean.MethodInfo.invoke(MethodInfo.java:408) ~[camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.component.bean.MethodInfo$1.doProceed(MethodInfo.java:279) ~[camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.component.bean.MethodInfo$1.proceed(MethodInfo.java:252) ~[camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.component.bean.BeanProcessor.process(BeanProcessor.java:177) ~[camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:109) ~[camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.component.bean.BeanProcessor.process(BeanProcessor.java:68) ~[camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.language.bean.BeanExpression$InvokeProcessor.process(BeanExpression.java:211) ~[camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.language.bean.BeanExpression.evaluate(BeanExpression.java:126) ~[camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.language.bean.BeanExpression.evaluate(BeanExpression.java:138) ~[camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.processor.SetHeaderProcessor.process(SetHeaderProcessor.java:52) ~[camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:468) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:196) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.processor.Pipeline.process(Pipeline.java:121) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.processor.Pipeline.process(Pipeline.java:83) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:196) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:62) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:196) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:109) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.processor.UnitOfWorkProducer.process(UnitOfWorkProducer.java:68) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:412) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:380) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:270) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:380) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:221) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:124) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:137) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:144) [camel-core-2.17.0.redhat-630446.jar:2.17.0.redhat-630446]
	at it.fvaleri.integ.DynamicRouterTest.test(DynamicRouterTest.java:37) [test-classes/:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_232]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_232]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_232]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_232]
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) [junit-4.12.jar:4.12]
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) [junit-4.12.jar:4.12]
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47) [junit-4.12.jar:4.12]
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) [junit-4.12.jar:4.12]
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26) [junit-4.12.jar:4.12]
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) [junit-4.12.jar:4.12]
	at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55) [junit-4.12.jar:4.12]
	at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55) [junit-4.12.jar:4.12]
	at org.junit.rules.RunRules.evaluate(RunRules.java:20) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325) [junit-4.12.jar:4.12]
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78) [junit-4.12.jar:4.12]
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268) [junit-4.12.jar:4.12]
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27) [junit-4.12.jar:4.12]
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363) [junit-4.12.jar:4.12]
	at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:365) [surefire-junit4-2.22.1.jar:2.22.1]
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:273) [surefire-junit4-2.22.1.jar:2.22.1]
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238) [surefire-junit4-2.22.1.jar:2.22.1]
	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:159) [surefire-junit4-2.22.1.jar:2.22.1]
	at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384) [surefire-booter-2.22.1.jar:2.22.1]
	at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345) [surefire-booter-2.22.1.jar:2.22.1]
	at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126) [surefire-booter-2.22.1.jar:2.22.1]
	at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418) [surefire-booter-2.22.1.jar:2.22.1]

        1. camel-dynamic-router.zip
          9 kB

              acosenti Andrea Cosentino
              rhn-support-fvaleri Federico Valeri
              Tomas Veskrna Tomas Veskrna
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                Created:
                Updated:
                Resolved: