How do I prevent Jenkins pipeline (workflow) from triggering multiple builds when used with multiple git repos?

Question

If you have a workflow which uses multiple git repositories, each git push triggers a build in Jenkins.

If I have a workflow job configured to poll 10 git repositories and I pushed changes to all of them [quite possible when doing a release build] - that's 10 builds in the queue. This is both good and bad. Bad because we will have changes in different repositories and we would like to kick off the build once all the files are in. At the same time I don't want to avoid polling the repositories.

stage 'REPO-1' {
git branch: "feature/testbranch", changelog: true, poll: true, url: 'ssh://[email protected]/repo1.git', credentialsId: 'xxx' }

stage 'REPO-2' {
git branch: "feature/testbranch", changelog: true, poll: true, url: 'ssh://[email protected]/repo2.git', credentialsId: 'xxx' }

Is there a way I can prevent this behavior perhaps introduce a delay in polling.

luka5z luka5z · Accepted Answer · 2016-04-05T20:56:21

Have you considered using Additional Behaviours: Polling ignores commits with certain messages?

If set, and Jenkins is set to poll for changes, Jenkins will ignore any revisions committed with message matched to Pattern when determining if a build needs to be triggered...

Steps:

Commit your changes with IGNORE message.
Once all repositories are up to date, then trigger build manually or with no-IGNORE message.

Checkout step:

checkout([$class: 'GitSCM', 
    branches: [[name: '*/master']], 
    doGenerateSubmoduleConfigurations: false, 
    extensions: [[$class: 'UserExclusion', excludedUsers: ''], 
    [$class: 'MessageExclusion', excludedMessage: '.*\\[ignore-this-commit\\].*']], 
    submoduleCfg: [], 
    userRemoteConfigs: [[url: 'https://github.com/luxengine/math.git']]])

How do I prevent Jenkins pipeline (workflow) from triggering multiple builds when used with multiple git repos?

2 Answers