Trigger Jenkins job on same node than parent with Groovy - jenkins

Question

In a Jenkins job, I want to trigger another Jenkins job from a Groovy script :
other_job.scheduleBuild();
But other_job is not launched on the same node than the parent job. How can I modify my script to launch other_job on the same node than the parent job ?
I used to do that with the "Trigger/call builds on other project" and "NodeLabel Parameter" plugins but I would like now to do that inside a script.

Answer 1

Firstly, check Restrict where this project can be run option in 'other_job' configuration - you must specify the same node name there.
Then, this should work:
import hudson.model.*
def job = Hudson.instance.getJob('other_job')
job.scheduleBuild();
If you don't want to use this option in your 'other_job', then you can use NodeLabel Parameter Plugin (which you already used) and pass the NodeLabel parameter to downstream job.
In this case, see example from Groovy plugin page how to start another job with parameters (you need to use NodeParameterValue instead of StringParameterValue):
def job = Hudson.instance.getJob('MyJobName')
def anotherBuild
try {
def params = [
new StringParameterValue('FOO', foo),
]
def future = job.scheduleBuild2(0, new Cause.UpstreamCause(build), new ParametersAction(params))
println "Waiting for the completion of " + HyperlinkNote.encodeTo('/' + job.url, job.fullDisplayName)
anotherBuild = future.get()
} catch (CancellationException x) {
throw new AbortException("${job.fullDisplayName} aborted.")
}
println HyperlinkNote.encodeTo('/' + anotherBuild.url, anotherBuild.fullDisplayName) + " completed. Result was " + anotherBuild.result
If it's not working, probably the issue is with node restrictions (e.g., there is only one executor for the node).
NOTE: I prefer to use Jenkins pipelines for job configurations. It allows you to store your build configs in Jenkinsfiles which can be loaded from repository (e.g., from GitLab). See example of triggering job with NodeParameterValue.

Answer 2

Based on the answer of biruk1230, here is a full solution :
import hudson.model.*;
import jenkins.model.Jenkins
import java.util.concurrent.*
import hudson.AbortException
import org.jvnet.jenkins.plugins.nodelabelparameter.*
def currentBuild = Thread.currentThread().executable
current_node = currentBuild.getBuiltOn().getNodeName()
def j = Hudson.instance.getJob('MyJobName')
try {
def params = [
new NodeParameterValue('node', current_node, current_node),
]
def future = j.scheduleBuild2(0, new Cause.UpstreamCause(build), new ParametersAction(params))
println "Waiting for the completion of " + j.getName()
anotherBuild = future.get()
} catch (CancellationException x) {
throw new AbortException("aborted.")
}