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

WorkflowJob ParentJob
WorkflowRun ParentBuild

pipeline {
  agent any
  stages {
    stage('Run') {
      steps {
        script {
          def cause = currentBuild.rawBuild.getCause(hudson.model.Cause$UpstreamCause)
          if (cause == null) {
            currentBuild.result = 'ABORTED'
            error("Unknown parent build or current build was triggered by user directly.")
          }
          def parentJob = hudson.model.Hudson.instance.getItem(cause.upstreamProject)
          def parentBuild = parentJob.getBuildByNumber(cause.upstreamBuild)
                
          ParentJob = parentJob
          ParentBuild = parentBuild
        }
      }
    }
  }
}