Is there some way to get a list of changed files in Pull request?

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1

Hi.

I’ve configured a multi-branch project with cloudbees-bitbucket-branch-source plugin in jenkins. When Pull Request(PR) is created it triggers build configuratin from Jenkinsfile in project code.
The problem: there is no way to get a list of changed files for all commits in PR
When I try to use this command:

git diff --name-only PR-BRANCH develop

it returns error:

fatal: ambiguous argument ‘PR-BRANCH’: unknown revision or path not in the working tree

Because “checkout scm” pipeline step doens’t fetch all needed branches (only last commit)

2

You can call checkout scm yourself and extend the definition of the refspec to include all the branches in the repository.

An example might look like this:

pipeline {
    options {
        skipDefaultCheckout()
    }
    stages {
        stage("root build.xml") {
            steps {
                // Initial checkout to provide only build.xml at root of workspace
                checkout([$class: 'GitSCM',
                          branches: [
                              [name: 'JENKINS-60617']
                          ],
                          extensions: [
                              [$class: 'CloneOption', depth: 1, honorRefspec: true, noTags: true, reference: '/var/lib/git/mwaite/bugs/jenkins-bugs.git', shallow: true],
                              [$class: 'SparseCheckoutPaths', sparseCheckoutPaths: [[path: 'build.xml']]], // exactly one file we need, nothing else
                          ],
                          userRemoteConfigs: [
                              [refspec: '+refs/heads/JENKINS-60617:refs/remotes/origin/JENKINS-60617', url: scm.userRemoteConfigs[0].url]
                          ]
                         ]
                )
            }
        }
    }
}

That example could be improved by replacing the reference to $class: GitSCM with the symbol scmGit, but you can do that replacement from the Pipeline Syntax Snippet Generator to get the best syntax