Send notifications to Slack from Jenkins pipeline

If you want to receive notifications using Jenkins declarative pipelines, this post is for you!

Suppose you have a channel named #mychannel, and want to receive:
- a notification when the pipeline starts
- a notification when the pipeline ends, both if failed or succeeded.

You can do as the following:

	//Declarative pipeline
	pipeline {
	agent any
	stages {
	stage('Clone sources') {
	steps {
	slackSend (channel: "#mychannel", color: '#FFFF00', message: "STARTED: Job '${env.JOB_NAME} [${env.BUILD_NUMBER}]' (${env.BUILD_URL})")
	git credentialsId: 'git_credentials', poll: false, branch: 'develop', url: 'https://mysource.com/mysimplenodejsexample.git'
	}
	}
	stage('Install npm packages') {
	steps {
	nodejs(nodeJSInstallationName: 'node13') {
	sh 'npm i'
	}
	}
	}
	stage('Build app') {
	steps {
	nodejs(nodeJSInstallationName: 'node13') {
	sh 'npm run build:dev'
	}
	}
	}
	}
	post {
	success {
	slackSend (channel: "#mychannel", color: '#00FF00', message: "SUCCESSFUL: Job '${env.JOB_NAME} [${env.BUILD_NUMBER}]' (${env.BUILD_URL})")
	}
	failure {
	slackSend (channel: "#mychannel", color: '#FF0000', message: "FAILURE: Job '${env.JOB_NAME} [${env.BUILD_NUMBER}]' (${env.BUILD_URL})")
	}
	}
	}

view raw slackPipeline.groovy hosted with ❤ by GitHub

And this is the result: