Fixing Jenkins Multibranch Pipeline Builds Failure with Slash-Containing Branches

Fixing Jenkins Multibranch Pipeline Builds Failure with Slash-Containing Branches

Jenkins is a powerful continuous integration and continuous delivery (CI/CD) tool that can automate the building, testing, and deployment of projects. One of the features of Jenkins is the Multibranch Pipeline, which allows you to create a single Jenkins job that can handle multiple branches of your project. However, if your project's branches contain slashes, you may encounter build failures. In this article, we will discuss the problem and provide a solution to fix Jenkins Multibranch Pipeline builds failure with slash-containing branches.

Context

Jenkins uses the Git plugin to handle Git repositories. When using the Multibranch Pipeline, the Git plugin scans the repository for branches and tags, and creates a new build for each branch and tag. However, if a branch name contains a slash, the Git plugin will treat it as a directory, and the build will fail.

For example, if you have a branch named feature/PROJECT-123-add-feature-x, the Git plugin will treat it as a directory named feature and a file named PROJECT-123-add-feature-x, and the build will fail.

Key Concepts

The key concept to understand when fixing this problem is that the Git plugin treats slashes in branch names as directories. Therefore, to fix the problem, we need to ensure that the branch names do not contain slashes.

Applications

To fix the problem, you can use one of the following approaches:

• Rename the branches: You can rename the branches to remove the slashes. For example, you can rename the branch feature/PROJECT-123-add-feature-x to feature_PROJECT-123-add-feature-x.
• Use a regular expression to match the branches: You can use a regular expression to match the branches that contain slashes. For example, you can use the regular expression feature/.*/.* to match all branches that start with the word feature and contain slashes.
• Use a Jenkins plugin: There are several Jenkins plugins that can handle slashes in branch names. For example, the Git Multi-Branch plugin can handle slashes in branch names.

Significance

Fixing the problem of Jenkins Multibranch Pipeline builds failure with slash-containing branches is important to ensure the smooth operation of your CI/CD pipeline. If the builds fail, your project may not be built, tested, and deployed correctly, which can lead to bugs, security vulnerabilities, and other issues.

Code Blocks

Here is an example of how to use a regular expression to match branches that contain slashes:

pipeline {
    agent any
    stages {
        stage('Build') {
            steps {
                script {
                    def branches = git.branch('*/*')
                    def slashBranches = branches.findAll { it.name =~ /feature\/.*/ }
                    slashBranches.each { branch ->
                        echo "Building branch ${branch.name}"
                        git branch: branch.name, credentialsId: 'your-credentials-id', url: 'your-git-repository-url'
                        sh './build.sh'
                    }
                }
            }
        }
    }
}

In this article, we discussed the problem of Jenkins Multibranch Pipeline builds failure with slash-containing branches and provided a solution to fix it. We covered the key concepts, applications, and significance of the problem, and provided code blocks to illustrate how to use a regular expression to match branches that contain slashes. We hope this article has been helpful in resolving the problem and improving the operation of your CI/CD pipeline.

References

• JENKINS-44558: Git plugin fails to discover branches with slashes in their names
• Git Multi-Branch plugin