How to continue past a failing stage in Jenkins declarative pipeline syntax

Question

I want to define multiple stages in Jenkins declarative pipeline syntax which can continue past any one of them failing. I cannot find any existing questions which are true dupl

Answer 1

I achieved it using post. My requirement was to send out slack notification irrespective of the build status.

@Library('instanceGroups')
import x.z.y.jenkins.libraries.SlackNotifier

def slackHelper = new x.z.y.jenkins.libraries.SlackNotifier(env)
final String projectName = "pomeranian"
final String featureBranchPattern = "f_"

pipeline {
    agent any
    options { disableConcurrentBuilds() }

    stages {
        stage('clean') {
            steps {
                script {
                    try {
                        echo 'Current Branch...' + env.BRANCH_NAME
                        sh 'rm -rf /var/lib/jenkins/.gradle/caches'
                        sh './gradlew clean'
                    } catch (e) {
                        currentBuild.result = 'FAILURE'
                        slackHelper.buildGenericJobFailureNotificationMessage()
                        throw e
                    }
                }
            }
        }

        stage('compile') {
            steps {
                script {
                    try {
                        sh "./gradlew compileJava"
                    } catch (e) {
                        currentBuild.result = 'FAILURE'
                        slackHelper.getCompilationFailureSlackNotificationMessage()
                        throw e
                    }
                }
            }
        }

        stage('test') {
            steps {
                script {
                    try {
                        sh "./gradlew test"
                    } finally {
                        junit 'build/test-results/test/*.xml'

                        slackHelper.getTestStatuses(currentBuild)
                        slackHelper.buildUnitTestSlackNotificationMessage()
                    }
                }
            }
        }

        stage('publish 2 nexus') {
            steps {
                script {
                  // some code
                }
            }
        }

        stage('git tagging') {
            steps {
                script {
                    // some more code...
            }
        }
    }


    post {
        always {
            script {
                slackHelper.finalBuildStatusMessage(currentBuild)
                slackSend(channel: '#ci-cd', attachments: slackHelper.getFinalSlackMessage())
            }
        }
    }
}