Running custom tasks on kie server

[Radostina]

Hello all,

we are trying to start a process definition, that has custom service task. There are 2 custom jars added, to the maven repository and to the jbpm workbench. When I start the process from jbpm, it works fine, the service task is completed successfully. Nut when I try to start the process from kie server rest api, I get this error:
2016-08-02 16:40:58,869 ERROR [org.kie.server.remote.rest.jbpm.ProcessResource] (default task-22) Unexpected error during processing null: java.lang.NullPointerException
    at java.util.EnumMap.<init>(EnumMap.java:138) [rt.jar:1.7.0_25]
    at com.sun.xml.bind.v2.model.impl.RuntimeEnumLeafInfoImpl.<init>(RuntimeEnumLeafInfoImpl.java:87) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.createEnumLeafInfo(RuntimeModelBuilder.java:108) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.createEnumLeafInfo(RuntimeModelBuilder.java:84) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:242) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:103) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:84) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:227) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:98) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.model.impl.RuntimeModelBuilder.getClassInfo(RuntimeModelBuilder.java:84) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.model.impl.ModelBuilder.getTypeInfo(ModelBuilder.java:375) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.model.impl.ModelBuilder.getTypeInfo(ModelBuilder.java:390) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getTypeInfoSet(JAXBContextImpl.java:454) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:292) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:139) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1138) [jaxb-impl-2.2.11.jar:2.2.11]
    at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:162) [jaxb-impl-2.2.11.jar:2.2.11]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_25]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_25]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_25]
    at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_25]
    at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:211) [jboss-jaxb-api_2.2_spec-1.0.4.Final.jar:1.0.4.Final]
    at javax.xml.bind.ContextFinder.find(ContextFinder.java:392) [jboss-jaxb-api_2.2_spec-1.0.4.Final.jar:1.0.4.Final]
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:618) [jboss-jaxb-api_2.2_spec-1.0.4.Final.jar:1.0.4.Final]
    at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:565) [jboss-jaxb-api_2.2_spec-1.0.4.Final.jar:1.0.4.Final]
    at org.kie.server.api.marshalling.jaxb.JaxbMarshaller.<init>(JaxbMarshaller.java:237) [kie-server-api-6.4.0.Final.jar:6.4.0.Final]
    at org.kie.server.api.marshalling.MarshallerFactory.getMarshaller(MarshallerFactory.java:39) [kie-server-api-6.4.0.Final.jar:6.4.0.Final]
    at org.kie.server.services.impl.KieContainerInstanceImpl.getMarshaller(KieContainerInstanceImpl.java:111) [kie-server-services-common-6.4.0.Final.jar:6.4.0.Final]
    at org.kie.server.services.impl.marshal.MarshallerHelper.marshal(MarshallerHelper.java:53) [kie-server-services-common-6.4.0.Final.jar:6.4.0.Final]
    at org.kie.server.services.jbpm.ProcessServiceBase.startProcess(ProcessServiceBase.java:89) [kie-server-services-jbpm-6.4.0.Final.jar:6.4.0.Final]
    at org.kie.server.remote.rest.jbpm.ProcessResource.startProcess(ProcessResource.java:93) [kie-server-rest-jbpm-6.4.0.Final.jar:6.4.0.Final]


Do I need some settings for kie server, so that it can see the custom jars I am using? Thanks in advance.

[Maciej Swiderski]

looks like kie server marshaller (jaxb one) is choking on some of the classes it has to process. So please double check that your classes are jaxb complient otherwise they cannot be used.

Maciej

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[Radostina]

Thank you, we'll check that.

[Radostina]

Hello Maciej,

I have another question. I have a very simple process with one step (user step). I have included a custom jar and its dependencies (5 jars). When I start a process with kie server api, I get exceptions of this kind:

<b>Stack Trace</b>
        <br/>org.jboss.resteasy.spi.UnhandledException: java.lang.NoClassDefFoundError: org/apache/avalon/framework/logger/Logger
        <br/>org.jboss.resteasy.core.ExceptionHandler.handleApplicationException(ExceptionHandler.java:76)
        <br/>org.jboss.resteasy.core.ExceptionHandler.handleException(ExceptionHandler.java:212)
        <br/>org.jboss.resteasy.core.SynchronousDispatcher.writeException(SynchronousDispatcher.java:149)
        <br/>org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:372)
        <br/>org.jboss.resteasy.core.SynchronousDispatcher.invoke(SynchronousDispatcher.java:179)
        <br/>org.jboss.resteasy.plugins.server.servlet.ServletContainerDispatcher.service(ServletContainerDispatcher.java:220)
        <br/>org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:56)
        <br/>org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher.service(HttpServletDispatcher.java:51)
        <br/>javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
        <br/>io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:86)
        <br/>io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
        <br/>io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
        <br/>org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)

Do you know how to solve this? Should I add missing library, and where?  Thank you.

[Maciej Swiderski]

this looks like a missing library issue - so double check that you included all your dependencies for the project. Then look at what's already in kie server classpath and if you have any overlaps - either remove that library from project dependency or mark it as provided.

Maciej

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[Radostina]

Ok, thanks.