Conditional deployment logic in Jenkins - Mini Project: Build & Apply

Conditional deployment logic

📖 Scenario: You are managing a Jenkins pipeline that deploys applications to different environments based on the branch name. For example, code from the main branch should deploy to production, while code from the develop branch should deploy to staging.

🎯 Goal: Build a Jenkins pipeline script that checks the branch name and conditionally deploys to the correct environment.

📋 What You'll Learn

Create a variable to hold the branch name

Add a variable to define the production branch name

Use conditional logic to decide deployment environment

Print the deployment environment based on the branch

💡 Why This Matters

🌍 Real World

In real projects, deployment pipelines must decide where to deploy code based on the branch or tag. This prevents accidental production deployments.

💼 Career

DevOps engineers often write Jenkins pipelines with conditional steps to automate safe and efficient deployments.

1

Set the branch name variable

Create a variable called branchName and set it to the string develop.

Jenkins

# Your code here

Need a hint?

Use def branchName = 'develop' to create the variable.

2

Define the production branch name

Create a variable called productionBranch and set it to the string main.

Jenkins

def branchName = 'develop'
# Your code here

Need a hint?

Use def productionBranch = 'main' to define the production branch.

3

Add conditional deployment logic

Use an if statement to check if branchName equals productionBranch. If yes, set a variable deployEnv to production. Otherwise, set deployEnv to staging.

Jenkins

def branchName = 'develop'
def productionBranch = 'main'
# Your code here

Need a hint?

Use if (branchName == productionBranch) { ... } else { ... } to set deployEnv.

4

Print the deployment environment

Write a println statement to display the text Deploying to: followed by the value of deployEnv.

Jenkins

def branchName = 'develop'
def productionBranch = 'main'
def deployEnv
if (branchName == productionBranch) {
    deployEnv = 'production'
} else {
    deployEnv = 'staging'
}
# Your code here

Need a hint?

Use println("Deploying to: ${deployEnv}") to print the deployment environment.