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  1. Jenkins
  2. JENKINS-69982

Can't check if object is null in pipeline - Cannot invoke method get() on null object

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    • Icon: Bug Bug
    • Resolution: Not A Defect
    • Icon: Minor Minor
    • groovy-plugin
    • None

       
      Can't check a object is null inside a jenkins pipeline, this should work in groovy but does not work in a jenkins pipeline

      Apologies if I have logged this in the wrong place or if this is not possible in a jenkins pipeline
       
      Pipeline

      pipeline {
          agent any
          stages {
              stage('Test') {
                  steps {
                      script {
                          def data = readYaml text: """
      builds:
        test:
          parameters:
            booleanParam:
              FOO: 'true'
        test2:
      """
                          if ( data.get('builds').get('test2').get('parameters') != null ) {
                              echo "test2 params exist"
                          } else {
                              echo "test2 params DONT exist"
                          }
                      }
                  }
              }
          }
      }
      

      Error

      java.lang.NullPointerException: Cannot invoke method get() on null object
      	at org.codehaus.groovy.runtime.NullObject.invokeMethod(NullObject.java:91)
      	at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:47)
      	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
      	at org.codehaus.groovy.runtime.callsite.NullCallSite.call(NullCallSite.java:34)
      	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:47)
      	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
      	at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:180)
      	at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:182)
      	at com.cloudbees.groovy.cps.sandbox.SandboxInvoker.methodCall(SandboxInvoker.java:17)
      	at WorkflowScript.run(WorkflowScript:15)
      	at ___cps.transform___(Native Method)
      	at com.cloudbees.groovy.cps.impl.ContinuationGroup.methodCall(ContinuationGroup.java:90)
      	at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.dispatchOrArg(FunctionCallBlock.java:113)
      	at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.fixArg(FunctionCallBlock.java:83)
      	at jdk.internal.reflect.GeneratedMethodAccessor399.invoke(Unknown Source)
      	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      	at java.base/java.lang.reflect.Method.invoke(Method.java:566)
      	at com.cloudbees.groovy.cps.impl.ContinuationPtr$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:177)
      	at com.cloudbees.groovy.cps.Continuable$1.call(Continuable.java:166)
      	at org.codehaus.groovy.runtime.GroovyCategorySupport$ThreadCategoryInfo.use(GroovyCategorySupport.java:136)
      	at org.codehaus.groovy.runtime.GroovyCategorySupport.use(GroovyCategorySupport.java:275)
      	at com.cloudbees.groovy.cps.Continuable.run0(Continuable.java:166)
      	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.access$001(SandboxContinuable.java:18)
      	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0(SandboxContinuable.java:51)
      	at org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk(CpsThread.java:187)
      	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.run(CpsThreadGroup.java:420)
      	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup.access$400(CpsThreadGroup.java:95)
      	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:330)
      	at org.jenkinsci.plugins.workflow.cps.CpsThreadGroup$2.call(CpsThreadGroup.java:294)
      	at org.jenkinsci.plugins.workflow.cps.CpsVmExecutorService$2.call(CpsVmExecutorService.java:67)
      	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
      	at hudson.remoting.SingleLaneExecutorService$1.run(SingleLaneExecutorService.java:139)
      	at jenkins.util.ContextResettingExecutorService$1.run(ContextResettingExecutorService.java:30)
      	at jenkins.security.ImpersonatingExecutorService$1.run(ImpersonatingExecutorService.java:70)
      	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
      	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
      	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
      	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
      	at java.base/java.lang.Thread.run(Thread.java:829)
      Finished: FAILURE
      

       

            vjuranek vjuranek
            psimms_r7 Peter Simms
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              Created:
              Updated:
              Resolved: