A sample Jenkins file to parse mvn results

Jenkinsfile

String cron_string = BRANCH_NAME == "fix/pipeline-trigger" ? "@hourly" : ""

pipeline{
    agent any
    environment {
        HOST = 'myproject.develop'
        REMOTE = 'false'
        HEADLESS = 'true'
        BROWSER = 'chrome'
        TEST = 'TestAddressBook*'
    }
    triggers { cron(cron_string) }
    stages{
        stage('Environment: List env variables'){
            steps{
                echo 'List all available env variables that can be used here.'
                sh 'printenv'
            }
        }
        stage('Fetch: From Bitbucket'){
            steps{
                echo "Fetch test project from bitbucket. Checkout current branch ${BRANCH_NAME}"
                git branch: "${BRANCH_NAME}", url: "${GIT_URL}"
            }
        }
        stage('Infra: Install browsers'){
            steps {
                echo 'Install browsers needed for tests.'
                dir('ci') {
                    sh 'chmod +x ./infra.sh'
                    sh "./infra.sh ${BROWSER}"
                }
            }
        }
        stage('Test: mvn tests'){
            steps{
                echo 'Run maven command which will execute the tests and rerun flaky tests (rerun parameter configured=2 in POM)'
                sh "mvn -settings ./settings.xml clean -Dhost=${HOST} -Dremote=${REMOTE} -Dheadless=${HEADLESS} -Dbrowser=${BROWSER} -Dtest=${TEST} site"
            }
        }
	stage('Result: mvn results'){
            steps{
                catchError(buildResult: 'SUCCESS', stageResult: 'UNSTABLE') {
                    // Reason for not using junit plugin: https://issues.jenkins.io/browse/JENKINS-61263
                    // Note: mvn gives more accurate test results and a possibility to identify the current status
                    echo 'Capture test results and report pass (green) or failed (yellow) - Also handles Flaky tests.'

                    echo 'STEP 01. Get test result from mvn run.'
                    sh 'chmod +x ./ci/test-result.sh'
                    sh './ci/test-result.sh ${BUILD_URL}consoleText'

                    echo 'STEP 02. Set stage status based on the test result.'
                    script{
                        TEST_RESULT = sh (
                            script: "cat ./ci/result-log.txt",
                            returnStdout: true
                        ).trim()

                        echo "TEST_RESULT: ${TEST_RESULT}"
                        if (TEST_RESULT.contains('Failures: 0, Errors: 0')) {
                            echo "Tests successful! 🚀"
                        } else {
                            echo "Tests failed! 💣"
                            sh "exit 1"
                        }
                    }
               }
            }
        }
	stage('Report: html site reports'){
            steps{
                echo 'Publish test report on Jenkins.'
		publishHTML target: [
                        reportName : "Test report: Apollo",
                        reportDir:   'target/site',
                        reportFiles: 'surefire-report.html',
                        keepAll:     true,
                        alwaysLinkToLastBuild: true,
                        allowMissing: false
                        ]
            }
        }
	stage('Archive: as Jenkins artifacts'){
            steps{
                echo 'Archive test reports on Jenkins.'
                archiveArtifacts 'target/site/**, target/surefire-reports/**'
            }
        }
	stage('Notify: On Slack/Email'){
            steps{
                echo 'Notify on Slack and/or email!'
            }
        }
    }
    post{
        always {
            echo 'Get junit results and build duration'
            script{               
                summary = junit testResults: 'target/surefire-reports/TEST-*.xml'
                CURRENT_BUILD_DURATION = "${currentBuild.durationString}".replace(' and counting', '')

                // [trigger from timer]: + echo _class:hudson.triggers.TimerTrigger,shortDescription:Started by timer
                // [trigger from user]: + echo _class:hudson.model.Cause,shortDescription:Started by user Pramod Kumar Yadav,userId:someIDhere,userName:Pramod Yadav
                // [trigger from branch]: [{"_class":"jenkins.branch.BranchIndexingCause","shortDescription":"Branch indexing"}]},
                // Note: Below JSON is without colon but later we use colon.
                BUILD_CAUSE_JSON = sh (script: "curl --silent ${BUILD_URL}/api/json | tr '{}' '\n' | grep 'shortDescription'", returnStdout: true).trim()
                // Note: There can be more than one shortDescription (during branch indexing), but only one shortDescriptionwith":"
                BUILD_USER_NAME = sh (script: "echo $BUILD_CAUSE_JSON | tr ',' '\n' | grep 'shortDescription:'", returnStdout: true).trim().substring(17)
                echo "BUILD_USER_NAME: $BUILD_USER_NAME"
                // If something unexpected happens, give a default value to this variable so that it can avoid pipeline failing because of this
                if (!BUILD_USER_NAME?.trim()) {
                    BUILD_USER_NAME = 'apollo'
                }          
            }
        }
        changed {
            echo 'This Build was different then before...'
            slackSend   channel: "#apollo-prs-pipelines",
                        color: '#439FE0',
                        message: "\n *Apollo Build Different: * ${env.JOB_NAME} ${env.BUILD_NUMBER} (<${env.BUILD_URL}|Open>) \n *Trigger*: ${BUILD_USER_NAME}, *Time took*: ${CURRENT_BUILD_DURATION} \n This was a different build than before. Check it out!"
        }
        success {
            echo 'Pipeline succeeded! 🚀'
            slackSend   channel: "#apollo-prs-pipelines",
                        color: 'good',
                        message: "\n *Apollo Build Successful: * ${env.JOB_NAME} ${env.BUILD_NUMBER} (<${env.BUILD_URL}|Open>) \n *Trigger*: ${BUILD_USER_NAME}, *Time took*: ${CURRENT_BUILD_DURATION} \n *Summary (mvn):* ${TEST_RESULT} \n *Summary (junit):* Tests: ${summary.totalCount}, Passed: ${summary.passCount}, Failed: ${summary.failCount}, Skipped: ${summary.skipCount}"

        }
        unstable {
            script{
                // Junit marks flaky tests as unstable. But if there are no failures/errors, we don't want to send a (yellow) warning notification in slack.
                if (TEST_RESULT.contains('Failures: 0, Errors: 0')) {
                    echo 'Pipeline succeeded! 🚀'
                    slackSend   channel: "#apollo-prs-pipelines",
                                color: 'good',
                                message: "\n *Apollo Build Successful: * ${env.JOB_NAME} ${env.BUILD_NUMBER} (<${env.BUILD_URL}|Open>) \n *Trigger*: ${BUILD_USER_NAME}, *Time took*: ${CURRENT_BUILD_DURATION} \n *Summary (mvn):* ${TEST_RESULT} \n *Summary (junit):* Tests: ${summary.totalCount}, Passed: ${summary.passCount}, Failed: ${summary.failCount}, Skipped: ${summary.skipCount}"

                } else {
                    echo 'Pipeline unstable! 😐  '
                 slackSend   channel: "#apollo-prs-pipelines",
                                color: 'warning',
                                message: "\n *Apollo Build Unstable: * ${env.JOB_NAME} ${env.BUILD_NUMBER} (<${env.BUILD_URL}|Open>) \n *Trigger*: ${BUILD_USER_NAME}, *Time took*: ${CURRENT_BUILD_DURATION} \n *Summary (mvn):* ${TEST_RESULT} \n *Summary (junit):* Tests: ${summary.totalCount}, Passed: ${summary.passCount}, Failed: ${summary.failCount}, Skipped: ${summary.skipCount}"
                }
            }
        }
        failure {
            echo 'Pipeline failed! 💣'
            slackSend   channel: "#apollo-prs-pipelines",
                        color: 'danger',
                        message: "\n *Apollo Build Failed: * ${env.JOB_NAME} ${env.BUILD_NUMBER} (<${env.BUILD_URL}|Open>) \n *Trigger*: ${BUILD_USER_NAME}, *Time took*: ${CURRENT_BUILD_DURATION}"

            mail    subject: "Apollo Build Failed: ${env.JOB_NAME} ${env.BUILD_NUMBER}",
                    body: "BUILD_URL: $BUILD_URL, \n Time took: ${CURRENT_BUILD_DURATION}",
                    to: 'youremailid@whatever.com'
        }
    }
}