java.io.NotSerializableException when trying to assign local variable to propery

[Jakub Pawlinski]

I my pipeline I use properties of ParentJob (the job that triggered current job) multiple times.

I wrote script to evaluate it, but it order to do this only once, I wanted to store it in property outside pipeline, unfortunately this brings NotSerializableException regardless that it actually works.

Maybe you have some ideas, my simplified pipeline:

1. pipeline TestScriptRunner, pipelinescript:

build 'TestScript'

2. pipeline TestScript, pipelinescript:

import jenkins.model.Jenkins

import java.text.*

import org.jenkinsci.plugins.workflow.job.WorkflowJob

import org.jenkinsci.plugins.workflow.job.WorkflowRun

WorkflowJob ParentJob

pipeline {

agent {

node {

label params.NODE

}

}

stages {

stage ('Initialise properties') {

steps {

echo "Evaluating parent job"

script {

def cause = currentBuild.rawBuild.getCause(hudson.model.Cause$UpstreamCause)

if (cause == null) {

bat """

@ECHO Error: Unknown parent build or current build was triggered by user directly.

@EXIT 1

"""

}

def parentJob = hudson.model.Hudson.instance.getItem(cause.upstreamProject)

//below works fine

echo "Located parent job:\t${parentJob.getFullDisplayName()}"

//below causes the NotSerializableException

ParentJob = parentJob

//below works fine, but there is exception waiting for being thrown at the end of the pipeline

echo "Property ParentJob:\t${ParentJob.getFullDisplayName()}"

}

}

}

}

}