How to differentiate build triggers in Jenkins Pipeline

Question

I\'m hoping to add a conditional stage to my Jenkinsfile that runs depending on how the build was triggered. Currently we are set up such that builds are either triggered by

Answer 1

I think that the answers here are incomplete and do not provide an actual ready to use answer. Here's my code to get it working:

import com.cloudbees.groovy.cps.NonCPS

@NonCPS
def isStartedByTimer() {
    def buildCauses = currentBuild.rawBuild.getCauses()
    echo buildCauses

    boolean isStartedByTimer = false
    for (buildCause in buildCauses) {
        if ("${buildCause}".contains("hudson.triggers.TimerTrigger\$TimerTriggerCause")) {
            isStartedByTimer = true
        }
    }

    echo isStartedByTimer
    return isStartedByTimer
}

// [...]
// Other pipeline stuff

script {
    isStartedByTimer()
}

When started by user:

00:00:01.353 [hudson.model.Cause$UserIdCause@fa5cb22a]
[Pipeline] echo
00:00:01.358 false

When started by timer:

00:00:01.585 [hudson.triggers.TimerTrigger$TimerTriggerCause@5]
[Pipeline] echo
00:00:01.590 true

Note: the NonCPS decorator is needed because otherwise the next non-script step will throw.