How to detect changes in "repo" for continuous integration in Jenkins?

Question

repo is a tool from Google that pulls in multiple git repos into one directory.

If I have ten git repos using repo , how do I detect changes so that I can kick off CI builds from Jenkins?

For instance, a given manifest (ie default.xml ) may contain

• five git repos that point to origin/master
• three git repos that point to origin/feature1
• two git repos that point to a tag

If these ten repos were in a big monolithic git repo, I would simply create a server side hook to detech changes and start an appropriate Jenkins job.

In a case where the separate ten repos are collected in via repo , how do I detect the changes in the appropriate branches and tags?

Answer 1

Use the repo Jenkins plugin, found at https://wiki.jenkins-ci.org/display/JENKINS/Repo+Plugin .

Then use "Gerrit Repo" in the job's "Source Code Management" section, and specify the URL to your repo manifest repository as "Manifest Repository Url".