Jenkinsfile

pipeline {
    agent {
       node {
           label 'jenkins-build-agent'
        }
    }

    environment {
        BLUE_OCEAN_URL = "https://jenkins.ozg-sh.de/job/ozg-operator/job/${env.BRANCH_NAME}/${env.BUILD_NUMBER}/"
        RELEASE_REGEX = /\d+.\d+.\d+/
        SNAPSHOT_REGEX = /\d+.\d+.\d+-SNAPSHOT/
        FAILED_STAGE = ""
        SH_SUCCESS_STATUS_CODE = 0
    }

    options {
        timeout(time: 1, unit: 'HOURS')
        disableConcurrentBuilds()
        buildDiscarder(logRotator(numToKeepStr: '5'))
    }

    stages {
        stage('Check Version') {
            steps {
                script {
                    FAILED_STAGE = env.STAGE_NAME
                    def rootPom = readMavenPom file: 'pom.xml'
                    def rootVersion = rootPom.version


                    if(env.BRANCH_NAME == 'release'){
                        if ( !isReleaseVersion([rootVersion])) {
                            error("Keine Release Version für Branch ${env.BRANCH_NAME}.")
                        }
                    } else {
                        if ( !isSnapshotVersion([rootVersion])) {
                            error("Keine Snapshot Version für Branch ${env.BRANCH_NAME}.")
                        }
                    }                   
                }
            }
        }
        stage('Build OZG-Operator') {
            steps {
                script {
                    FAILED_STAGE=env.STAGE_NAME
                }
                configFileProvider([configFile(fileId: 'maven-settings', variable: 'MAVEN_SETTINGS')]) {
                    sh 'mvn --version'
                    sh 'mvn -s $MAVEN_SETTINGS -Pnative spring-boot:build-image -Dmaven.wagon.http.retryHandler.count=3'
                        
                    script {
                      	try {
	                        if (env.BRANCH_NAME == 'master') {
		                        withSonarQubeEnv('sonarqube-ozg-sh'){
		        					sh 'mvn -s $MAVEN_SETTINGS sonar:sonar'	                                
		                        }
		                    }
		                } catch (Exception e) {
	                        unstable("SonarQube failed")
	                    }
                    }
                }
            }
            post {
                always{
                    junit testResults: '**/target/surefire-reports/*.xml', skipPublishingChecks: true
                }
            }
        }

        stage('Deploy to Nexus'){
            when {
                anyOf {
                    branch 'master'
                    branch 'release'
                }
            }
            steps {
                script {
                    FAILED_STAGE = env.STAGE_NAME
                }
                configFileProvider([configFile(fileId: 'maven-settings', variable: 'MAVEN_SETTINGS')]) {
                    sh 'mvn -s $MAVEN_SETTINGS -DskipTests deploy'
                }
            }
        }

        stage('Tag and Push Docker image') {
            steps {
                script {
                    FAILED_STAGE=env.STAGE_NAME
                    IMAGE_TAG = generateImageTag()

                    tagAndPushDockerImage('ozg-operator', IMAGE_TAG)
                
                    if (env.BRANCH_NAME == 'master') {
                        tagAndPushDockerImage('ozg-operator', 'snapshot-latest')
                    }
                    else if (env.BRANCH_NAME == 'release') {
                        tagAndPushDockerImage('ozg-operator', 'latest')
                    }
                }
            }
        }

        stage('Test, build and deploy Helm Chart') {
            steps {
                script {
                    FAILED_STAGE=env.STAGE_NAME
                    HELM_CHART_VERSION = generateHelmChartVersion()

                    dir('src/main/helm') {
                        sh "helm lint -f ../../test/helm/linter_values.yaml"

                        sh "helm unittest --helm3 -f '../../test/helm/*.yaml' ."

                        sh "helm package --version=${HELM_CHART_VERSION} ."

                        deployHelmChart("ozg-operator", HELM_CHART_VERSION)
                    }
                }
            }
        }

        stage('Trigger Dev rollout') {
            when {
                branch 'master'
            }
            steps {
                script {
                    FAILED_STAGE = env.STAGE_NAME

                    cloneGitopsRepo()

                    setNewDevVersion()

                    pushNewDevVersion()
                }
            }
        }

        stage ('OWASP Dependency-Check Vulnerabilities') {
            when {
                anyOf {
                    branch 'master'
                    branch 'release'
                }
            }
            steps {
                    dependencyCheck additionalArguments: ''' 
                        -o "./" 
                        -s "./"
                        -f "ALL" 
                        -d /dependency-check-data
                        --suppression dependency-check-supressions.xml
                        --disableKnownExploited
                        --disableArchive
                        --prettyPrint''', odcInstallation: 'dependency-check-owasp'

                    dependencyCheckPublisher pattern: 'dependency-check-report.xml'
            }
        }
    }
    post {
        failure {
            script {
                if (env.BRANCH_NAME == 'master' || env.BRANCH_NAME == 'release') {
                    //sendFailureMessage()
                }
            }
        }
    }
}

Void deployHelmChart(String helmChartName, String helmChartVersion) {       
    withCredentials([usernamePassword(credentialsId: 'jenkins-nexus-login', usernameVariable: 'USERNAME', passwordVariable: 'PASSWORD')]){
        if (env.BRANCH_NAME == 'release') {
            result = sh script: '''curl -u $USERNAME:$PASSWORD https://nexus.ozg-sh.de/service/rest/v1/components?repository=ozg-base-apps -F file=@'''+helmChartName+'''-'''+helmChartVersion+'''.tgz''', returnStdout: true
        }
        else {
            result = sh script: '''curl -u $USERNAME:$PASSWORD https://nexus.ozg-sh.de/service/rest/v1/components?repository=ozg-base-apps-snapshot -F file=@'''+helmChartName+'''-'''+helmChartVersion+'''.tgz''', returnStdout: true
        }

        if (result != '') {
            error(result)
        }
    }
}

String generateHelmChartVersion() {
    def chartVersion = getPomVersion('pom.xml')

    if (env.BRANCH_NAME == 'master') {
        chartVersion += "-${env.GIT_COMMIT.take(7)}"
    }
    else if (env.BRANCH_NAME != 'release') {
        chartVersion += "-${env.BRANCH_NAME}"
    }

    return chartVersion.replaceAll("_", "-")
}

Void sendFailureMessage() {
    def room = ''
    def data = """{"msgtype":"m.text", \
                    "body":"OZG-Operator: Build Failed. Stage: ${FAILED_STAGE} Build-ID: ${env.BUILD_NUMBER} Link: ${BLUE_OCEAN_URL}", \
                    "format": "org.matrix.custom.html", \
                    "formatted_body":"OZG-Operator: Build Failed. Stage: ${FAILED_STAGE} Build-ID: <a href='${BLUE_OCEAN_URL}'>${env.BUILD_NUMBER}</a>"}"""
       
    if (env.BRANCH_NAME == 'master') {
        room = "!iQPAvQIiRwRpNOszjw:matrix.ozg-sh.de"
    }
    else if (env.BRANCH_NAME == 'release') {
        room = "!oWZpUGTFsxkJIYNfYg:matrix.ozg-sh.de"
    }

    sh "curl -XPOST -H 'authorization: Bearer ${getElementAccessToken()}' -d '${data}' https://matrix.ozg-sh.de/_matrix/client/v3/rooms/$room/send/m.room.message"
}

String getElementAccessToken() {
    withCredentials([string(credentialsId: 'element-login-json', variable: 'LOGIN_JSON')]) {
        return readJSON ( text: sh (script: '''curl -XPOST -d \"$LOGIN_JSON\" https://matrix.ozg-sh.de/_matrix/client/v3/login''', returnStdout: true)).access_token
    }
}

Void setNewDevVersion() {
    setNewOzgOperatorVersion('dev')
}

Void setNewTestVersion() {
    setNewOzgOperatorVersion('test')
}

Void setNewOzgOperatorVersion(String environment) {
    dir("gitops") {
        def envFile = "${environment}/application/values/ozg-operator-values.yaml"
        def envVersions = readYaml file: envFile

        envVersions.ozg_operator.image.tag = IMAGE_TAG
        envVersions.ozg_operator.helm.version = HELM_CHART_VERSION

        writeYaml file: envFile, data: envVersions, overwrite: true
    }
}

Void pushNewDevVersion() {
    pushNewGitopsVersion('dev')
}

Void pushNewTestVersion() {
    pushNewGitopsVersion('test')
}

Void pushNewGitopsVersion(String environment) {
    dir('gitops') {
        if (!hasValuesFileChanged(environment)) {
            return
        }
        
        withCredentials([usernamePassword(credentialsId: 'jenkins-gitea-access-token', passwordVariable: 'TOKEN', usernameVariable: 'USER')]) {            
            sh "git add ${environment}/application/values/ozg-operator-values.yaml"

            sh "git commit -m 'jenkins rollout ${environment} ozg-operator version ${IMAGE_TAG}'"
            sh 'git push https://${USER}:${TOKEN}@git.ozg-sh.de/mgm/gitops.git'
        }
    }
}

Boolean hasValuesFileChanged(String environment) {
    return sh (script: "git status | grep '${environment}/application/values/ozg-operator-values.yaml'", returnStatus: true) == env.SH_SUCCESS_STATUS_CODE as Integer
}

Void configureGit() {
    final email = "jenkins@ozg-sh.de"
    final name = "jenkins"

    dir("gitops") {
        sh "git config user.email '${email}'"
        sh "git config user.name '${name}'"
    }
}

Void cloneGitopsRepo() {
    withCredentials([usernamePassword(credentialsId: 'jenkins-gitea-access-token', passwordVariable: 'TOKEN', usernameVariable: 'USER')]) {
        sh 'git clone https://${USER}:${TOKEN}@git.ozg-sh.de/mgm/gitops.git'
    }

    configureGit()
}

Void tagAndPushDockerImage(String imageName, String newTag){
    withCredentials([usernamePassword(credentialsId: 'jenkins-nexus-login', usernameVariable: 'USER', passwordVariable: 'PASSWORD')]) {
        sh 'docker login docker.ozg-sh.de -u ${USER} -p ${PASSWORD}'

        sh "docker tag docker.ozg-sh.de/${imageName}:build-latest docker.ozg-sh.de/${imageName}:${newTag}"
        sh "docker push docker.ozg-sh.de/${imageName}:${newTag}"
    }
}

String getPomVersion(String pomFile){
    def pom = readMavenPom file: pomFile

    return pom.version
}

String generateImageTag() {
    def imageTag = "${env.BRANCH_NAME}-${getPomVersion('pom.xml')}"

    if (env.BRANCH_NAME == 'master') {
        imageTag += "-${env.GIT_COMMIT.take(7)}"
    }

    return imageTag
}

String getParentPomVersion(String filePath) {
    def pom = readMavenPom file: filePath
    return pom.parent.version
}

Boolean isReleaseVersion(List versions) {
    return matchRegexVersion(versions, RELEASE_REGEX)
}

Boolean isSnapshotVersion(List versions) {
    return matchRegexVersion(versions, SNAPSHOT_REGEX)
}

Boolean matchRegexVersion(List versions, String regex) {
    for (version in versions) {
        if ( !(version ==~ regex) ) {
            return false
        }
    }

    return true
}