jenkins dsl job script: How to access environment variable, (which is injected via propertiesFile, ) in downstreamParameterized step

Question

my dsl job script in brief

job('test') {
  steps {
    shell('echo VERSION=$VERSION > version.txt\n' +
          'echo VERSION_SUFFIX=$VERSION_SUFFIX >> version.txt\n' + 
          'echo GROUP_ID=$GROUP_ID >> version.txt')

    // EnvInject Plugin 
    environmentVariables {
      propertiesFile('version.txt')
    }
  }

  publishers {
    postBuildScripts {
        steps {
            shell('echo ${VERSION}')
        }
        onlyIfBuildSucceeds(false)
        onlyIfBuildFails(false)
    }
    downstreamParameterized {
      trigger('next-job') {
        parameters {
          predefinedProp('relVersion', '${VERSION}')
        }
      }
    }
  }  
}

I need $VERSION number to pass to the downstream job a parameter.

I tried, ${env.VERSION} and also tried many options, but i couldn't catch the VERSION . any help is appreciated, thanks in advance.

Answer 1

You can use the option Prepare an environment for the run which is executed before SCM.

Option Prepare an environment for the run is not belongs pre-build/ build /post build, but job properties.

There is no job DSL API supports to configure this option. But we can use configure block.

job('next-job') {

  configure { project -> 
    project / 'properties' << 'EnvInjectJobProperty' {

        info {
          loadFilesFromMaster false
          propertiesContent 'Branch=${relVersion}'
        }
        keepBuildVariables true
        keepJenkinsSystemVariables true
        overrideBuildParameters false
        on true
    }
  } // end of configure block

  scm { 
    git { 
      remote { 
        url("ssh://git@bitbucket.rl.git") 
      } 
        branches('${branch}') 
    } 
  } // end of scm

  steps {}
  publishers {}
}

Above job DSL can generate following xml as the content of seed job's config.xml

<project>
    <actions></actions>
    <description></description>
    <keepDependencies>false</keepDependencies>
    <properties>
        <EnvInjectJobProperty>
            <info>
                <loadFilesFromMaster>false</loadFilesFromMaster>
                <propertiesContent>Branch=${relVersion}</propertiesContent>
            </info>
            <keepBuildVariables>true</keepBuildVariables>
            <keepJenkinsSystemVariables>true</keepJenkinsSystemVariables>
            <overrideBuildParameters>false</overrideBuildParameters>
            <on>true</on>
        </EnvInjectJobProperty>
    </properties>
    <canRoam>true</canRoam>
    <disabled>false</disabled>
    <blockBuildWhenDownstreamBuilding>false</blockBuildWhenDownstreamBuilding>
    <blockBuildWhenUpstreamBuilding>false</blockBuildWhenUpstreamBuilding>
    <triggers></triggers>
    <concurrentBuild>false</concurrentBuild>
    <builders></builders>
    <publishers></publishers>
    <buildWrappers></buildWrappers>
    <scm class='hudson.plugins.git.GitSCM'>
        <userRemoteConfigs>
            <hudson.plugins.git.UserRemoteConfig>
                <url>ssh://git@bitbucket.rl.git</url>
            </hudson.plugins.git.UserRemoteConfig>
        </userRemoteConfigs>
        <branches>
            <hudson.plugins.git.BranchSpec>
                <name>${branch}</name>
            </hudson.plugins.git.BranchSpec>
        </branches>
        <configVersion>2</configVersion>
        <doGenerateSubmoduleConfigurations>false</doGenerateSubmoduleConfigurations>
        <gitTool>Default</gitTool>
    </scm>
</project>

You can try jod DSL on http://job-dsl.herokuapp.com/ to check generated xml from it as expect or not.