Understanding Jenkins Pipeline Failure: Get Exception Message
Jenkins is a powerful automation server that enables developers to build, test, and deploy their software. However, like any other tool, it is not immune to failures. One common issue that developers face is understanding the reason behind a pipeline failure. In this article, we will discuss how to get the exception message of a Jenkins pipeline failure to help you diagnose and resolve the issue.
Jenkins Pipeline Failure: An Overview
A Jenkins pipeline is a collection of jobs that are executed in a specific order to achieve a particular goal. Each job in the pipeline is a separate step that performs a specific task. When a job fails, it can cause the entire pipeline to fail, making it essential to understand the reason behind the failure.
Jenkins provides detailed logs for each job in the pipeline, which can help you diagnose the issue. However, sometimes the logs may not provide enough information to understand the root cause of the failure. In such cases, getting the exception message can help you identify the issue quickly.
Getting the Exception Message
To get the exception message of a Jenkins pipeline failure, you can use the currentBuild.rawBuild object in your pipeline script. This object provides access to the raw data of the current build, including the build's cause, log, and exception message.
Here's an example of how to get the exception message of a Jenkins pipeline failure:
try {
// pipeline code here
} catch (e) {
echo "Pipeline failed with exception: ${e.getMessage()}"
}
In the above example, the try-catch block is used to catch any exceptions that occur during the pipeline execution. The e.getMessage() method is used to get the exception message, which is then printed to the console using the echo command.
Extending the Functionality
To extend the functionality of the above example, you can use the currentBuild.result object to update the GitHub commit status to indicate whether the build passed or failed. This can help you keep track of the build status and identify any issues quickly.
Here's an example of how to update the GitHub commit status:
try {
// pipeline code here
currentBuild.result = 'SUCCESS'
} catch (e) {
currentBuild.result = 'FAILURE'
echo "Pipeline failed with exception: ${e.getMessage()}"
githubCommitStatus(commitId: 'COMMIT_ID', state: 'FAILURE')
}
In the above example, the currentBuild.result object is set to 'SUCCESS' if the pipeline executes successfully. If an exception occurs, the currentBuild.result object is set to 'FAILURE', and the githubCommitStatus method is called to update the GitHub commit status.
Understanding the reason behind a Jenkins pipeline failure is crucial to diagnose and resolve the issue quickly. By getting the exception message of a Jenkins pipeline failure, you can identify the root cause of the issue and take appropriate action. Additionally, extending the functionality to update the GitHub commit status can help you keep track of the build status and identify any issues quickly.