java.lang.NullPointerException: Cannot invoke method tool() on null object

[Allen Fisher]

Hi All--

Running into a problem with a pipeline build. Running in 2.32. 

Here's the start of my pipeline:

node('linux'){

    stage('Build Manager'){

        checkout([$class: 'GitSCM', branches: [[name: '*/master']], doGenerateSubmoduleConfigurations: false, extensions: [], gitTool: 'Default', submoduleCfg: [], userRemoteConfigs: [[credentialsId: 'aac7b8ee-ebc9-4f9e-8215-9d2fa3966241', url: 'github']]])

        tool name: 'gradle', type: 'gradle'

        withEnv(["PATH+GRADLE=${tool 'gradle'}/bin"]){

            sh "gradle buildTar"

        }

        

        stash includes: 'war-dir/*.war', name: 'AuthManagerWARFile'

        stash includes: '*.tgz', name: 'AuthManagerTgzFile'

    }

    

    stage('Build Kafka'){

        checkout([$class: 'GitSCM', branches: [[name: '*/master']], doGenerateSubmoduleConfigurations: false, extensions: [[$class: 'RelativeTargetDirectory', relativeTargetDir: 'kafka']], gitTool: 'Default', submoduleCfg: [], userRemoteConfigs: [[credentialsId: 'aac7b8ee-ebc9-4f9e-8215-9d2fa3966241', url: 'https://github.']]])        tool name: 'Gradle34', type: 'gradle'

        

//fails somewhere around here... I don't get either echo statement

        echo "setting up tool"  

        tool name: 'gradle', type: 'gradle'

        echo "invoking gradle"

        withEnv(["PATH+GRADLE=${tool 'gradle'}/bin"]){

            sh "cd kafka && gradle releaseTarGz"

        }

        

        stash includes:'kafka/core/build/distributions/*.tgz', name:'kafka'

    }

here's the console output:

[Completed at:20170629-1027]
:buildTar

BUILD SUCCESSFUL

Total time: 6.359 secs
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] stash
Stashed 1 file(s)
[Pipeline] stash
Stashed 1 file(s)
[Pipeline] }
[Pipeline] // stage
[Pipeline] stage
[Pipeline] { (Build Kafka)
[Pipeline] checkout
 > git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
 > git config remote.origin.url URL # timeout=10
Fetching upstream changes from URL
 > git --version # timeout=10
using GIT_ASKPASS to set credentials Build Account on Github
 > git fetch --tags --progress URL +refs/heads/*:refs/remotes/origin/*
 > git rev-parse refs/remotes/origin/master^{commit} # timeout=10
 > git rev-parse refs/remotes/origin/origin/master^{commit} # timeout=10
Checking out Revision 3b603e57c16efc182424458be0ddb3b380779f49 (refs/remotes/origin/master)
 > git config core.sparsecheckout # timeout=10
 > git checkout -f 3b603e57c16efc182424458be0ddb3b380779f49
 > git rev-list 3b603e57c16efc182424458be0ddb3b380779f49 # timeout=10
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
java.lang.NullPointerException: Cannot invoke method tool() on null object
	at org.codehaus.groovy.runtime.NullObject.invokeMethod(NullObject.java:91)
	at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:48)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
	at org.codehaus.groovy.runtime.callsite.NullCallSite.call(NullCallSite.java:35)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:48)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:113)
	at org.kohsuke.groovy.sandbox.impl.Checker$1.call(Checker.java:151)
	at org.kohsuke.groovy.sandbox.impl.Checker.checkedCall(Checker.java:146)
	at com.cloudbees.groovy.cps.sandbox.SandboxInvoker.methodCall(SandboxInvoker.java:16)
	at WorkflowScript.run(WorkflowScript:29)
	at ___cps.transform___(Native Method)
	at com.cloudbees.groovy.cps.impl.ContinuationGroup.methodCall(ContinuationGroup.java:57)
	at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.dispatchOrArg(FunctionCallBlock.java:109)
	at com.cloudbees.groovy.cps.impl.FunctionCallBlock$ContinuationImpl.fixArg(FunctionCallBlock.java:82)
	at sun.reflect.GeneratedMethodAccessor449.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.cloudbees.groovy.cps.impl.ContinuationPtr$ContinuationImpl.receive(ContinuationPtr.java:72)
	at com.cloudbees.groovy.cps.impl.CollectionLiteralBlock$ContinuationImpl.dispatch(CollectionLiteralBlock.java:55)
	at com.cloudbees.groovy.cps.impl.CollectionLiteralBlock$ContinuationImpl.item(CollectionLiteralBlock.java:45)
	at sun.reflect.GeneratedMethodAccessor434.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:74)
	at com.cloudbees.groovy.cps.Continuable.run0(Continuable.java:154)
	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.access$001(SandboxContinuable.java:18)
	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable$1.call(SandboxContinuable.java:33)
	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable$1.call(SandboxContinuable.java:30)
	at org.jenkinsci.plugins.scriptsecurity.sandbox.groovy.GroovySandbox.runInSandbox(GroovySandbox.java:108)
	at org.jenkinsci.plugins.workflow.cps.SandboxContinuable.run0(SandboxContinuable.java:30)
	at org.jenkinsci.plugins.workflow.cps.CpsThread.runNextChunk(CpsThread.java:165)
	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:745)
Finished: FAILURE

Any ideas? Of course this works fine in my test environment, but not production.

[Allen Fisher]

Figured out my problem... somehow ended up with a bogus tool invocation in the same line as my checkout.