Build history and logs in Jenkins - Mini Project: Build & Apply

Build history and logs

📖 Scenario: You are setting up a Jenkins job to keep track of build history and logs. This helps you see which builds succeeded or failed and review their logs for troubleshooting.

🎯 Goal: Create a Jenkins pipeline script that stores build results and logs in a dictionary, then prints the build history summary.

📋 What You'll Learn

Create a dictionary called build_history with build numbers as keys and their status as values.

Add a variable called latest_build to store the most recent build number.

Use a for loop to collect build logs for each build number in build_history.

Print the build history summary showing build numbers, status, and logs.

💡 Why This Matters

🌍 Real World

Jenkins pipelines keep track of build results and logs to help developers quickly see what happened in each build and troubleshoot failures.

💼 Career

Understanding how to manage build history and logs is essential for DevOps engineers and CI/CD pipeline maintainers to ensure software quality and fast issue resolution.

1

Create initial build history dictionary

Create a dictionary called build_history with these exact entries: 1: 'SUCCESS', 2: 'FAILURE', 3: 'SUCCESS'.

Jenkins

# Create the build_history dictionary with build numbers and statuses
# Your code here

Need a hint?

Use curly braces to create a dictionary with keys 1, 2, 3 and their status values.

2

Add latest build number variable

Add a variable called latest_build and set it to 3.

Jenkins

build_history = {1: 'SUCCESS', 2: 'FAILURE', 3: 'SUCCESS'}
# Add latest_build variable with value 3
# Your code here

Need a hint?

Just assign the number 3 to the variable latest_build.

3

Collect build logs in a dictionary

Create an empty dictionary called build_logs. Use a for loop with variable build_num to iterate over build_history.keys(). Inside the loop, add an entry to build_logs with key build_num and value f'Log for build {build_num}'.

Jenkins

build_history = {1: 'SUCCESS', 2: 'FAILURE', 3: 'SUCCESS'}
latest_build = 3
# Create build_logs dictionary and fill it with logs for each build
# Your code here

Need a hint?

Use a for loop over build_history.keys() and assign formatted strings to build_logs dictionary.

4

Print build history summary

Use a for loop with variables build_num and status to iterate over build_history.items(). Inside the loop, print the line exactly as: Build {build_num}: Status={status}, Log={build_logs[build_num]}.

Jenkins

build_history = {1: 'SUCCESS', 2: 'FAILURE', 3: 'SUCCESS'}
latest_build = 3
build_logs = {}
for build_num in build_history.keys():
    build_logs[build_num] = f'Log for build {build_num}'
# Print build summary lines below
# Your code here

Need a hint?

Use a for loop over build_history.items() and print the formatted string with build number, status, and log.