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@CSTDev
Last active January 9, 2023 04:32
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Monorepo Jenkinsfile and groovy script that will create a Multi-branch pipeline for each project that has a Jenkinsfile within your repository, put at the top level of your repo and create a job in Jenkins that runs the Jenkinsfile. Useful for when you're using a monorepo and have multiple Jenkinsfiles in multiple sub directories. This can still…
pipeline {
agent {
label 'docker'
}
stages{
stage('Create jobs'){
steps{
container('docker'){
script{
def files = findFiles(glob: ' **/Jenkinsfile')
for (int i = 1; i < files.size(); i++) {
echo files[i].name
def filePath = files[i].path
def pathWithoutFile = filePath.replace('/Jenkinsfile', '')
def jobName = "YourPrefix-" + ( pathWithoutFile =~ /([^\/]+)\/?$/)[0][0]
echo filePath
echo jobName
if(Jenkins.instance.getItemMap()[jobName] == null){
echo "Job ${jobName} does not exist, creating..."
createJob(filePath, jobName)
}else{
echo "Job ${jobName} already exists."
}
}
}
}
}
}
}
}
def createJob(filePath, jobName){
jobDsl targets: '*.groovy',
removedJobAction: 'IGNORE',
removedViewAction: 'IGNORE',
lookupStrategy: 'JENKINS_ROOT',
additionalParameters: [jenkinsfile: filePath, Name: jobName]
}
// A new UUID must be generated for the first run and re-used for your Job DSL, the plugin updates jobs based on ID
UUID uuid = UUID.fromString("5f8becfc-e881-4ca7-9e5e-06de8acfa15c") // generate one @ https://www.uuidgenerator.net
multibranchPipelineJob("${Name}") {
displayName "${Name}"
description "Builds ${Name}"
configure {
it / sources / 'data' / 'jenkins.branch.BranchSource' << {
source(class: 'jenkins.plugins.git.GitSCMSource') {
id(uuid)
remote("<Git repo url>")
credentialsId("<Credentials ID for Git repo>")
includes('*')
excludes('')
ignoreOnPushNotifications('false')
traits {
'jenkins.plugins.git.traits.BranchDiscoveryTrait'()
}
}
}
// customise the branch project factory
it / factory(class: "org.jenkinsci.plugins.workflow.multibranch.WorkflowBranchProjectFactory") << {
owner(class:"org.jenkinsci.plugins.workflow.multibranch.WorkflowMultiBranchProject", reference: "../..")
scriptPath("${jenkinsfile}")
}
}
}
@mainameiz
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@poloka
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poloka commented Jan 6, 2023

@mainameiz not quite. If I follow this example it looks like this creates individual jobs for building within the monorepo. The cloudbees example would look to just build everything if it found a change in say the ‘packages’ folder. Now if that folder had 100’s of npm projects I only want to build the one that had an update. @CSTDev am I following your solution correctly? Do you have some screenshots of your generated jobs associated to the monorepo?

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