createDslContainers.groovy

def call(Map config, Closure body){

    String podName = config.podName ?: "contraDSL-${UUID.randomUUID()}"
    String openshiftServiceAccount = config.openshiftServiceAccount ?: 'jenkins'
    String openshiftNamespace = config.openshiftNamespace ?: 'contra-dsl'
    String dockerRepoURL = config.dockerRepoURL ?: '172.30.1.1:5000'
    String ansibleExecutorTag = config.ansibleExecutorTag ?: 'stable'
    String linchpinExecutorTag = config.linchpinExecutorTag ?: 'stable'

    println(podName)
    println(openshiftServiceAccount)
    println(openshiftNamespace)
    println(dockerRepoURL)
    println(ansibleExecutorTag)
    println(linchpinExecutorTag)


    podTemplate(name: podName,
            label: podName,
            cloud: 'openshift',
            serviceAccount: openshiftServiceAccount,
            idleMinutes: 0,
            namespace: openshiftNamespace,
            containers:[
                    // This adds the custom slave container to the pod. Must be first with name 'jnlp'
                    containerTemplate(name: 'jnlp',
                            image: "${dockerRepoURL}/${openshiftNamespace}/jenkins-contra-slave:stable",
                            ttyEnabled: false,
                            args: '${computer.jnlpmac} ${computer.name}',
                            command: '',
                            workingDir: '/workDir'),
                    // This adds the ansible-executor container to the
                    containerTemplate(name: 'ansible-executor',
                            image: "${dockerRepoURL}/${openshiftNamespace}/ansible-executor:${ansibleExecutorTag}",
                            ttyEnabled: true,
                            command: '',
                            workingDir: '/ansible'),
                    // This adds the rpmbuild test container to the pod.
                    containerTemplate(name: 'linchpin-executor',
                            alwaysPullImage: true,
                            image: "${dockerRepoURL}/${openshiftNamespace}/linchpin-executor:${linchpinExecutorTag}",
                            ttyEnabled: true,
                            command: '',
                            workingDir: '/linchpin'),
                    ]
    ) {
        body()
    }
}

Jenkins Console Output

[Pipeline] // stage
[Pipeline] stage
[Pipeline] { (Where Am I)
[Pipeline] sh
[foo] Running shell script
+ pwd
/workDir/workspace/foo
[Pipeline] sh
[foo] Running shell script
+ ls -lah
total 24K
drwxr-sr-x. 3 default 1000060000 4.0K Apr 23 19:33 .
drwxr-sr-x. 4 default 1000060000 4.0K Apr 23 19:33 ..
-rw-r--r--. 1 default 1000060000 2.0K Apr 23 19:33 .contra.yml
drwxr-sr-x. 8 default 1000060000 4.0K Apr 23 19:33 .git
-rw-r--r--. 1 default 1000060000    8 Apr 23 19:33 .gitignore
-rw-r--r--. 1 default 1000060000  455 Apr 23 19:33 jenkinsfile
[Pipeline] sh
[foo] Running shell script
+ echo /workDir/workspace/foo
/workDir/workspace/foo
[Pipeline] sh
[foo] Running shell script
+ hostname
contradsl-407aec30-5c57-4f11-81bf-52e014adea12-8f6lg-5xb8x
[Pipeline] }
[Pipeline] // stage
[Pipeline] stage
[Pipeline] { (Parse Configuration)
[Pipeline] echo
I would parse you!
[Pipeline] echo
java.io.FileNotFoundException: /workDir/workspace/foo/.contra.yml (No such file or directory)
[Pipeline] sh
[foo] Running shell script
+ pwd
/workDir/workspace/foo
[Pipeline] sh
[foo] Running shell script
+ ls -lah
total 24K
drwxr-sr-x. 3 default 1000060000 4.0K Apr 23 19:33 .
drwxr-sr-x. 4 default 1000060000 4.0K Apr 23 19:33 ..
-rw-r--r--. 1 default 1000060000 2.0K Apr 23 19:33 .contra.yml
drwxr-sr-x. 8 default 1000060000 4.0K Apr 23 19:33 .git
-rw-r--r--. 1 default 1000060000    8 Apr 23 19:33 .gitignore
-rw-r--r--. 1 default 1000060000  455 Apr 23 19:33 jenkinsfile
[Pipeline] sh
[foo] Running shell script
+ echo /workDir/workspace/foo
/workDir/workspace/foo
[Pipeline] sh
[foo] Running shell script
+ hostname
contradsl-407aec30-5c57-4f11-81bf-52e014adea12-8f6lg-5xb8x
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // node
[Pipeline] }
[Pipeline] // podTemplate
[Pipeline] End of Pipeline

jenkinsfile

// Create the DSL podTemplate
createDslContainers podName: dslPodName,
                    dockerRepoURL: dockerRepoURL,
                    openshiftNamespace: openshiftNamespace,
                    openshiftServiceAccount: openshiftServiceAccount,

// Pass the remainder of your jenkinsfile as a closure to the createDslContainers method
{
  node(dslPodName){
      stage("pre-flight"){
          deleteDir()
          git branch: 'development', url: 'https://github.com/robnester-rh/hdsl_test'
      }

      stage("Where Am I"){
        sh "pwd"
        sh "ls -lah"
        sh "echo $WORKSPACE"
        sh "hostname"
      }

      stage("Parse Configuration"){
        echo 'I would parse you!'
          parseConfigYaml()
          sh "pwd"
          sh "ls -lah"
          sh "echo $WORKSPACE"
          sh "hostname"
          // contai ner('ansible-executor'){
          //   sh "ls /"
          // }
      }
}

parseConfigYaml.groovy

@Grab('org.yaml:snakeyaml')

import org.yaml.snakeyaml.Yaml
import groovy.json.*

/**
 * This method reads a yaml file and parses it to JSON so that it can be
 * serialized/deserialized easily and passed around within the pipeline.
 *
 * @param filename
 * @return
 */


def call(String filename=".contra"){

    Yaml parser = new Yaml()

    try{
        env.configJSON = new JsonBuilder(parser.load(("${WORKSPACE}/${filename}.yaml" as File).text))
        echo "Found ${filename}.yaml"

    } catch ( FileNotFoundException ){
        try{
            env.configJSON = new JsonBuilder(parser.load(("${WORKSPACE}/${filename}.yml" as File).text))
            echo "Found ${filename}.yml"

        } catch ( FileNotFoundException e ){
            println(e)
        }
    }
}