Accessing the current Jenkins build in Groovy script

Question

I have created a Groovy script which is used in a System Groovy Script step in a Jenkins job which needs to access the current build of the current job.

T

Answer 1

If in your Jenkins job you are using Groovy plug-in, then inside Execute system Groovy script step the plug-in already provides you access to some predefined variables:

build
    The current AbstractBuild.
launcher
    A Launcher.
listener
    A BuildListener.
out
    A PrintStream (listener.logger).

For example:

println build.getClass()

Outputs:

class hudson.model.FreeStyleBuild

Answer 2

This is the snippet I have been looking for!

import hudson.model.*
def currentBuild = Thread.currentThread().executable

This fits in with my above script like so:

import hudson.model.*


def scheduleDependentJob(jobName) {
  def fooParam = new StringParameterValue('foo', 'bar');
  def paramsAction = new ParametersAction(fooParam)

  println "Scheduling dependent job"
  def currentBuild = Thread.currentThread().executable
  def cause = new Cause.UpstreamCause(currentBuild)
  def causeAction = new hudson.model.CauseAction(cause)
  instance.queue.schedule(job, 0, causeAction, paramsAction)
}

Answer 3

This completes the answer from luka5z to exemplify how scriptler passes the listener to the groovy script:

import jenkins.model.*;
import hudson.model.*;
import hudson.util.*;
import hudson.tasks.*;
import hudson.plugins.git.*;
import hudson.scm.*
import jenkins.scm.*

def build = Thread.currentThread()?.executable
//def svn_branch = build.buildVariableResolver.resolve("SVN_BRANCH")

if (build instanceof AbstractBuild){
    def workspace = build.workspace
    //def job = build.parent
    def scm = build.parent.scm;
    //println "scm: $scm"

    if (scm instanceof hudson.scm.SubversionSCM) {
        scm.checkout(build, null/*Launcher*/, workspace /*workspace*/, listener/*listener*/, null /*changelogfile*/,null/*baseline*/)
    }else if (scm instanceof hudson.plugins.git.GitSCM) {
        scm.checkout(build, null/*Launcher*/, workspace /*workspace*/, listener/*listener*/, null /*changelogfile*/,null/*baseline*/)
    }
}

listener in Scriptler