Build history and logs in Jenkins - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print the last build number in Jenkins pipeline.

Jenkins

echo "Last build number is: [1]"

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AcurrentBuild.number

Bbuild.number

ClastBuild.number

Dbuilds.number

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'build.number' which is undefined in pipeline context.

In Jenkins pipeline, currentBuild.number gives the current build number.

2fill in blank

medium

Complete the code to archive the build logs as artifacts in Jenkins pipeline.

Jenkins

archiveArtifacts artifacts: '[1]', fingerprint: true

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Abuild.log

B**/build.log

Clogs/build.log

D**/logs/*.log

Attempts:

3 left

💡 Hint

Common Mistakes

Using a single file name which may not match all logs.

The pattern **/logs/*.log archives all log files inside any 'logs' folder.

3fill in blank

hard

Fix the error in the code to get the build duration in seconds.

Jenkins

def duration = currentBuild.[1] / 1000

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Aduration

BdurationInMillis

CtimeMillis

DbuildDuration

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'duration' which is not a property of currentBuild.

currentBuild.durationInMillis holds the build duration in milliseconds.

4fill in blank

hard

Fill both blanks to filter build logs for errors and save them.

Jenkins

def errors = sh(script: 'grep [1] build.log', returnStdout: true).trim()
writeFile file: 'errors.txt', text: [2]

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A"ERROR"

Berrors

C"WARNING"

Derrors.trim()

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'WARNING' instead of 'ERROR' for filtering.

Use grep "ERROR" to find error lines and save the variable errors to file.

5fill in blank

hard

Fill all three blanks to create a map of build numbers to their result status.

Jenkins

def buildResults = [[1]: [2] for build in currentBuild.rawBuild.project.builds if build.number > [3]]

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Abuild.number

Bbuild.result.toString()

C10

Dbuild.status

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'build.status' which is not a valid property.

Use build.number as key, build.result.toString() as value, and filter builds with number greater than 10.