Jenkins declarative pipeline conditional post action

Question

I am using Jenkins declarative pipeline and want to perform some post build actions depending on the build status.

To be more precise, I want to send an email when the build status changed (from success to failure, or success to unstable, or failure to success).

Here is my pipeline:

pipeline {
    agent none
    stages {
        stage('test') {
            agent any
            steps {                
                sh './tests.sh'
            }
        }
    }
    post {
        changed {
            // Send different emails depending on build status
            // Success       -> anything else
            // Anything else -> Success
        }
    }
}

Any idea ?

Answer 1

For writing conditions you can define your own methods.

For example, if you want to send an email only when the build status changes:

def notifyStatusChangeViaEmail(buildStatus) {
    def status

    switch (buildStatus) {
        case 'SUCCESS':
            status = 'is now green again!'
            break

        case 'UNSTABLE':
            status = 'has become unstable..'
            break

        case 'FAILURE':
            status = 'has turned RED :('
            break
    }

    emailext (
        subject: "Job '${env.JOB_NAME}' ${status}",
        body: "See ${env.BUILD_URL} for more details",
        recipientProviders: [
            [$class: 'DevelopersRecipientProvider'], 
            [$class: 'RequesterRecipientProvider']
        ]
    )
}

pipeline {
    ...

    post {
        changed {
            // Will trigger only when job status changes: GREEN -> RED, RED -> GREEN, etc
            notifyStatusChangeViaEmail(currentBuild.currentResult)
        }
    }
}

Ideally, you would also want to put notifyStatusChangeViaEmail method definiton in your shared pipeline library so that it could be re-used in other jobs/pipelines.