Jenkins: How to skip a stage in Jenkins pipeline based on a checkbox parameter condition?

Question

I have list of apps as checkboxes (using extended choice parameter with ',' as multiSelectDelimiter). I want to execute a stage if a matching checkbox is checked, else skip it.

For eg: apps: app1,app3 [checkboxes selected] checkboxes selected image

stages{
  paralle{
    stage('First'){
       when {
        // execute this when app1 is selected 
       }
       steps {
       }
    }
    stage('Second'){
       when {
        // execute this when app2 is selected, should skip this as 'app2' is not checked
       }
       steps {
       }
    }
    stage('Third'){
       when {
        // execute this when app3 is selected 
       }
       steps {
       }
    }
    stage('Fourth'){
       when {
        // execute this when app4 is selected, else skip it 
       }
       steps {
       }
    }
  }
}

Answer 1

I used below piece in the pipeline to select the stage based on parameters provided in the Jenkins UI. "Boolean parameter" can be useful instead of "Extended Choice Parameter" to avoid clutter in the pipeline. Reference - https://www.jenkins.io/doc/book/pipeline/syntax/#when

stage("Install Application1"){
when { environment name: 'APP_1', value: 'true' }
steps{
sh '''
    Steps to install the application1
'''
}
}
stage("Install Application2"){
when { environment name: 'APP_2', value: 'true' }
steps{
    sh '''
        Steps to install the application2
    '''
}
}

Answer 2

It can be done this way

def choice=[]
node {
    choice = params["my-checkbox"].split(",")
}

pipeline {
    agent any;
    parameters {
      checkboxParameter name:'my-checkbox', format:'JSON', uri:'https://raw.githubusercontent.com/samitkumarpatel/test0/main/checkbox.json'
      /*
      consider this is the structure of CheckBox in https://raw.githubusercontent.com/samitkumarpatel/test0/main/checkbox.json URI
        {
          "key": "stage1",
          "value": "stage1"
        },
        {
          "key": "stage2",
          "value": "stage2"
        },
        {
          "key": "stage3",
          "value": "stage3"
        }
      */
    }
    stages {
        stage('stage1') {
            when {
                expression {
                    'stage1' in choice
                }
            }
            steps {
                echo "${env.STAGE_NAME} execuated"
            }
        }
        stage('stage2') {
            when {
                expression {
                    'stage2' in choice
                }
            }
            steps {
                echo "${env.STAGE_NAME} execuated"
            }
        }
        stage('stage3') {
            when {
                expression {
                    'stage3' in choice
                }
            }
            steps {
                echo "${env.STAGE_NAME} execuated"
            }
        }
    }
}

This pipeline will run the stages which are selected during the build

with this parameter, it will only trigger stage1 and stage2