For loop not accepted in JCasc jobdsl

Your checklist for this issue

• [ x ] Jenkins version
• [ x ] Plugin version
• [ x ] OS

I am using the Jenkins helm chart to deploy Jenkins on Kubernetes. Helm chart version 1.23.0. (There have been a lot of updates on the chart lately, the version is from last week).

• Jenkins Version: lts
• JCasc Version: 1.41
• OS: Official Jenkins docker image

Description

I am inserting a jobdsl script with a loop to generate a couple of multibranch jobs. I am using helm to inject these values. The helm chart then mounts this script locally. Everything is correctly inserted. The following lines show a cat of the inserted script:

root@jenkins-5969d5b49-z8chv:/# cat /var/jenkins_home/casc_configs/jobs.yaml
jobs:
- script: >
    def scriptpaths = ['one','two']
    for( i in scriptpaths) {
       multibranchPipelineJob("${i}") {
          branchSources {
             git {
                   id("${i}") // IMPORTANT: use a constant and unique identifier
                   remote('git@xxxxxxxx')
                   credentialsId('cloud-jenkins-ssh-private-key')
                   includes('dev')
             }
          }

          orphanedItemStrategy {
             discardOldItems {
                   numToKeep(20)
             }
          }
       }
    }

When executing through jcasc the following error is thrown:

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
script: 1: expecting EOF, found 'for' @ line 1, column 33.
   def scriptpaths = ['one','two'] for( i in scriptpaths) {
                                   ^

1 error
[....]

When I do a copy & paste of the job script, paste it manually into a jobdsl build job, everything works.

[timja]

I think you’re trimming whitespace,

can you try with | instead of > after your script:

[jetersen]

@njtman as I mentioned it matters with YAML literal you use.

Your best bet is | or |- again see the https://yaml-multiline.info/

jobs:
- script: |
    def scriptpaths = ['one','two']
    for( i in scriptpaths) {
       multibranchPipelineJob("$i") {
          branchSources {
             git {
                   id("$i") // IMPORTANT: use a constant and unique identifier
                   remote('git@xxxxxxxx')
                   credentialsId('cloud-jenkins-ssh-private-key')
                   includes('dev')
             }
          }

          orphanedItemStrategy {
             discardOldItems {
                   numToKeep(20)
             }
          }
       }
    }