Jenkinsfile

pipeline {
    agent any
    tools {
	    maven "MAVEN3"
	    jdk "OracleJDK8"
	}
    environment{
        registry = "dockingsumit/vproappimage" // use your own app image or this image
        registryCredential = "dockerhub-id"    // save your own dockerhub credentials in jenkins and provide its ID
    }
    stages{
        // Builds the source code 
        stage('Build') {
            steps {
                sh 'mvn clean install -DskipTests'
            }
            post {
                success {
                    echo "Now Archiving."
                    archiveArtifacts artifacts: '**/*.war'
                }
            }
        }
        // Test the source code using Maven
        stage('Test'){
            steps {
                sh 'mvn test'
            }

        }
        // Test the code quality using checkstyle analysis
        stage('Checkstyle Analysis'){
            steps {
                sh 'mvn checkstyle:checkstyle'
            }
        }
        // Tests the code quality using sonarqube analysis
        stage('Sonar Analysis') {
            environment {
                scannerHome = tool 'sonar4.8' //sonar-scanner name
            }
            steps {
               withSonarQubeEnv('Sonar-server')//sonar-server name {
                   sh '''${scannerHome}/bin/sonar-scanner -Dsonar.projectKey=vprofile \
                   -Dsonar.projectName=vprofile \
                   -Dsonar.projectVersion=1.0 \
                   -Dsonar.sources=src/ \
                   -Dsonar.java.binaries=target/test-classes/com/visualpathit/account/controllerTest/ \
                   -Dsonar.junit.reportsPath=target/surefire-reports/ \
                   -Dsonar.jacoco.reportsPath=target/jacoco.exec \
                   -Dsonar.java.checkstyle.reportPaths=target/checkstyle-result.xml'''
              }
            }
        }
        // Fetches the test results of sonarqube analysis through a webhook by using a defined quality gate
        stage("Quality Gate") {
            steps {
                timeout(time: 1, unit: 'HOURS') {
                    // Parameter indicates whether to set pipeline to UNSTABLE if Quality Gate fails
                    // true = set pipeline to UNSTABLE, false = don't
                    waitForQualityGate abortPipeline: true
                }
            }
        }
        //Builds the docker app image and assigns a tag
        stage('Building image') {
            steps{
              script {
                dockerImage = docker.build registry + ":$BUILD_NUMBER"
              }
            }
        }
        // Uploads the built image to dockerhub
        stage('Upload Image') {
          steps{
            script {
              docker.withRegistry( '', registryCredential ) {
                dockerImage.push("$BUILD_NUMBER")
                dockerImage.push('latest')
              }
            }
          }
        }
        // Removes the unused docker image to clean up disk space
        stage('Remove Unused docker image') {
          steps{
            sh "docker rmi $registry:$BUILD_NUMBER"
          }
        }
        //Finally fetch the latest image from dockerhub and deploy it on kubernetes cluster using helm command
        stage('Kubernetes Deploy') {
	        agent { label 'KOPS' }
                steps {  //The namespace prod must already exist
                        sh "helm upgrade --install --force vprofile-stack helm/vprofilecharts --set appimage=${registry}:${BUILD_NUMBER} --namespace prod"
                }
        }

    }

}