Pipeline utility functions in Jenkins - Mini Project: Build & Apply

Pipeline utility functions

📖 Scenario: You are working on a Jenkins pipeline to automate your software build process. You want to use Jenkins pipeline utility functions to handle files and data easily.

🎯 Goal: Build a simple Jenkins pipeline script that uses pipeline utility functions to read a properties file, parse it, and print a specific property value.

📋 What You'll Learn

Create a properties file content as a string

Use a config variable to hold the file content

Use the pipeline utility function readProperties to parse the properties content

Print the value of a specific property from the parsed data

💡 Why This Matters

🌍 Real World

Jenkins pipelines often need to read configuration files to control build and deployment steps dynamically.

💼 Career

Knowing how to use pipeline utility functions helps automate and simplify CI/CD pipelines, a key skill for DevOps engineers.

1

Create properties file content

Create a variable called propsContent and assign it the string value "version=1.2.3\nreleaseDate=2024-06-01" representing the properties file content.

Jenkins

# Create a variable called propsContent with the properties string
# Your code here

Need a hint?

Use def propsContent = "version=1.2.3\nreleaseDate=2024-06-01" to create the string variable.

2

Assign properties content to a config variable

Create a variable called configFile and assign it the value of propsContent.

Jenkins

def propsContent = "version=1.2.3\nreleaseDate=2024-06-01"
# Create a variable called configFile and assign it propsContent
# Your code here

Need a hint?

Assign configFile = propsContent to hold the properties content.

3

Parse properties content using readProperties

Use the pipeline utility function readProperties with the argument text: configFile and assign the result to a variable called props.

Jenkins

def propsContent = "version=1.2.3\nreleaseDate=2024-06-01"
def configFile = propsContent
// Use readProperties to parse configFile and assign to props
// Your code here

Need a hint?

Use def props = readProperties text: configFile to parse the properties string.

4

Print the version property

Write a println statement to print the value of the version property from the props variable.

Jenkins

def propsContent = "version=1.2.3\nreleaseDate=2024-06-01"
def configFile = propsContent
def props = readProperties text: configFile
// Print the version property from props
// Your code here

Need a hint?

Use println(props['version']) to display the version value.