[JIRA] [job-dsl-plugin] (JENKINS-18492) Inception: Create DSL build step to add DSL Job execution as step

Fri, 12 Jul 2013 02:30:51 -0700

An example might be useful.
Currently I have around 50 projects in our internal github, most are using git-flow for managing releases and features. That means that I have two core jobs for branches (develop and master) that change rather infrequently.
For each project there are a number of short-lived branches for features, releases and hotfixes (branch names: feature/, release/, hotfix/*) where I would like to check and (re-)create Jobs for each branch more frequently than for the main ones.

So here is my current solution (the important parts):

Unable to find source-code formatter for language: groovy. Available languages are: _javascript_, sql, xhtml, actionscript, none, html, xml, java
repositories.each { repo ->

        /* get branches from github */

        branches.each {
            def branchName = it.name

            switch (branchName) {
                case productionBranchName:
                case developmentBranchName:
                    job {

                      /* define a job for each master(production) and develop (development) branch

                    }

                    break
                default:
                    /* skip other branches now */
                    break
            }
        }

        /* generate monitor job per repository */
        job {
  
            triggers {
                cron 'H/5 * * * *'
            }

            steps {
                dsl {
                    removeAction('DELETE')
                    //text readFileFromWorkspace('templates.monitor-job.groovy')
                    text """/* Job for monitoring feature/release and other branches. Generated code, DO NOT EDIT!! */

        /* iterae over branches */
        
        branches.each {
            def branchName = it.name

            /* Skip all non-feature/release/hotfix branches */
            if (branchName =~ /(feature|release|hotfix)\\/.+/) {

                job {
                    name "${baseJobName}-\${branchName.replaceAll('/', '-')}"
                    /* use develop job as template */
                    using "${baseJobName}-${developmentBranchName}"

                    scm {
                        github(ghproject, "origin/\${branchName}", 'ssh', 'source.xing.com')
                    }
                }
            }
        }
    """
                }
            }
        }
    }

Basically I install the two main jobs that only change when I update the initial DSL specification. The monitor job runs on a rather frequent cron schedule to catch all short-lived branches and creates jobs for feature branches based on the current development-Branch job definition.

As the DSL keeps track both of the generated jobs and of the templates that have been used for jobs I get an automatic cascade that updates my feature branches whenever I roll out changes to the development branch. And jobs for feature branches that no longer exist get deleted automatically.

Integrating the DSL definition as String enables to generate a customized job template for each repository (necessary as there is a different template job for each repository)
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