Multi-branch pipeline job creation in Jenkins - Mini Project: Build & Apply

Multi-branch Pipeline Job Creation

📖 Scenario: You are a DevOps engineer setting up a Jenkins multi-branch pipeline job to automatically build branches from a Git repository.This helps your team test code changes on different branches without manual job creation.

🎯 Goal: Create a Jenkins multi-branch pipeline job configuration that scans a Git repository and builds branches automatically.

📋 What You'll Learn

Create a Jenkinsfile repository URL variable

Add a branch source configuration for Git

Define the multi-branch pipeline job with the Git source

Print the job configuration XML to verify

💡 Why This Matters

🌍 Real World

Multi-branch pipeline jobs in Jenkins automatically detect and build branches from a Git repository, saving time and reducing manual job setup.

💼 Career

DevOps engineers and automation specialists use multi-branch pipelines to streamline continuous integration and delivery workflows.

1

Define the Git repository URL

Create a variable called git_repo_url and set it to the string "https://github.com/example/repo.git".

Jenkins

# Your code here

Need a hint?

Use a simple string assignment to create the variable.

2

Create the Git branch source configuration

Create a dictionary called branch_source with keys "class" set to "jenkins.branch.BranchSource" and "source" set to another dictionary with "class" as "jenkins.plugins.git.GitSCMSource" and "remote" set to the variable git_repo_url.

Jenkins

git_repo_url = "https://github.com/example/repo.git"
# Your code here

Need a hint?

Use nested dictionaries to represent the configuration structure.

3

Define the multi-branch pipeline job configuration

Create a dictionary called multi_branch_job with key "branchSources" set to a list containing the branch_source dictionary.

Jenkins

git_repo_url = "https://github.com/example/repo.git"
branch_source = {
    "class": "jenkins.branch.BranchSource",
    "source": {
        "class": "jenkins.plugins.git.GitSCMSource",
        "remote": git_repo_url
    }
}
# Your code here

Need a hint?

Wrap the branch source in a list and assign it to the branchSources key.

4

Print the multi-branch pipeline job configuration

Write a print statement to display the multi_branch_job dictionary.

Jenkins

git_repo_url = "https://github.com/example/repo.git"
branch_source = {
    "class": "jenkins.branch.BranchSource",
    "source": {
        "class": "jenkins.plugins.git.GitSCMSource",
        "remote": git_repo_url
    }
}
multi_branch_job = {
    "branchSources": [branch_source]
}
# Your code here

Need a hint?

Use print(multi_branch_job) to show the final configuration.