How to send Slack notification after Jenkins pipeline build failed?

Question

I have a pipeline groovy script in Jenkins v2.19. Also I have a
"Slack Notification Plugin" v2.0.1 and "Groovy Postbuild Plugin".

I have successfully send a message "build started" and "build finished" (if it had).

When some build step failed – how I can send a message "Build failed" to the Slack channel?

Answer 1

You could do something like this and use a try catch block.

Here is some example Code:

node {     try {         notifyBuild('STARTED')          stage('Prepare code') {             echo 'do checkout stuff'         }          stage('Testing') {             echo 'Testing'             echo 'Testing - publish coverage results'         }          stage('Staging') {             echo 'Deploy Stage'         }          stage('Deploy') {             echo 'Deploy - Backend'             echo 'Deploy - Frontend'         }    } catch (e) {     // If there was an exception thrown, the build failed     currentBuild.result = "FAILED"     throw e   } finally {     // Success or failure, always send notifications     notifyBuild(currentBuild.result)   } }  def notifyBuild(String buildStatus = 'STARTED') {   // build status of null means successful   buildStatus =  buildStatus ?: 'SUCCESSFUL'    // Default values   def colorName = 'RED'   def colorCode = '#FF0000'   def subject = "${buildStatus}: Job '${env.JOB_NAME} [${env.BUILD_NUMBER}]'"   def summary = "${subject} (${env.BUILD_URL})"    // Override default values based on build status   if (buildStatus == 'STARTED') {     color = 'YELLOW'     colorCode = '#FFFF00'   } else if (buildStatus == 'SUCCESSFUL') {     color = 'GREEN'     colorCode = '#00FF00'   } else {     color = 'RED'     colorCode = '#FF0000'   }    // Send notifications   slackSend (color: colorCode, message: summary) } 

Complete snippet can be found here Jenkinsfile Template