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  1. Jenkins
  2. JENKINS-47355

groovy.lang.MissingFieldException when accessing a property in the second instanced child class, where both classes inherit from the same base class, only in shared libraries

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: Major Major
    • workflow-cps-global-lib-plugin
    • None
    • Jenkins LTS v2.73.1, Pipeline: Groovy 2.40, Pipeline: Shared Groovy Libraries 2.9

      With the following three classes in a shared library (in the package 'com.cloudgine.notify' in my case, as seen in the exception):

      class BaseClass implements Serializable {

    BaseClass() {
        this.testVar = ''
    }

    String testVar

    public testMethod() {}
}

      class ChildClassA extends BaseClass {

    public testMethod() {
        def x = testVar
    }

}

      class ChildClassB extends BaseClass {

    public testMethod() {
        def x = testVar
    }

}

      And the following code in a pipeline script using that shared library:

      def childA = new ChildClassA()

childA.testMethod()

def childB = new ChildClassB()

childB.testMethod()

      The following exception will be seen:

      groovy.lang.MissingFieldException: No such field: testVar for class: com.cloudgine.notify.ChildClassB
	at groovy.lang.MetaClassImpl.getAttribute(MetaClassImpl.java:2846)
	at groovy.lang.MetaClassImpl.getAttribute(MetaClassImpl.java:3782)
	at org.codehaus.groovy.runtime.InvokerHelper.getAttribute(InvokerHelper.java:147)
	at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.getField(ScriptBytecodeAdapter.java:306)
	at com.cloudbees.groovy.cps.sandbox.DefaultInvoker.getAttribute(DefaultInvoker.java:43)
	at com.cloudbees.groovy.cps.impl.AttributeAccessBlock.rawGet(AttributeAccessBlock.java:20)
	at com.cloudgine.notify.ChildClassB.testMethod(/var/lib/jenkins/jobs/Experiments/jobs/Test_ChildClassMissingFieldException/builds/24/libs/pipeline-common/src/com/cloudgine/notify/ChildClassB.groovy:7)
	at WorkflowScript.run(WorkflowScript:11)
	at ___cps.transform___(Native Method)
	at com.cloudbees.groovy.cps.impl.PropertyishBlock$ContinuationImpl.get(PropertyishBlock.java:74)
	at com.cloudbees.groovy.cps.LValueBlock$GetAdapter.receive(LValueBlock.java:30)
	at com.cloudbees.groovy.cps.impl.PropertyishBlock$ContinuationImpl.fixName(PropertyishBlock.java:66)
	at sun.reflect.GeneratedMethodAccessor185.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.cloudbees.groovy.cps.impl.ContinuationPtr$ContinuationImpl.receive(ContinuationPtr.java:72)
	at com.cloudbees.groovy.cps.impl.ConstantBlock.eval(ConstantBlock.java:21)
	at com.cloudbees.groovy.cps.Next.step(Next.java:83)
	at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:174)
	at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:163)
	at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:122)
	at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:261)
	at com.cloudbees.groovy.cps.Continuable.run0(Continuable.java:163)
	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.access$001(SandboxContinuable.java:19)
	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable$1.call(SandboxContinuable.java:35)
	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable$1.call(SandboxContinuable.java:32)
	at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runInSandbox(GroovySandbox.java:108)
	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0(SandboxContinuable.java:32)
	at org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk(CpsThread.java:174)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:330)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access$100(CpsThreadGroup.java:82)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:242)
	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:230)
	at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$2.call(CpsVmExecutorService.java:64)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:112)
	at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:28)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:748)

      This does not occur if all of this code is ran within a single pipeline script.

      I can workaround it by calling getTestVar() instead of testVar

      If I don't instance childClassA, childClassB will work fine. Instancing two of any one class on their own also works fine.

      I found this originally in a more complex case in which BaseClass was an abstract class and testMethod() was an abstract method, if the code looks odd at first, but simplified the repro for the report.

            Unassigned Unassigned
            philmcardlecg Phil McArdle
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              Created:
              Updated:
              Resolved: