Jenkinsfile

// For ci.jenkins.io
// https://github.com/jenkins-infra/documentation/blob/master/ci.adoc

properties([
  disableConcurrentBuilds(abortPrevious: true),
  buildDiscarder(logRotator(numToKeepStr: '5')),
])

if (env.BRANCH_IS_PRIMARY) {
  properties([
          buildDiscarder(logRotator(numToKeepStr: '10')),
          pipelineTriggers([cron('0 18 * * 2')]),
          disableConcurrentBuilds(abortPrevious: true),
  ])
}

def branches = [:]
def splits
def needSplittingFromWorkspace = true

// TODO could use launchable split-subset to split this into bins

for (build = currentBuild.previousCompletedBuild; build != null; build = build.previousCompletedBuild) {
  if (build.resultIsBetterOrEqualTo('UNSTABLE')) {
    // we have a reference build
    echo "not splitting from workspace, reference build should be : ${build.projectName}:${build.number}, with state ${build.result}"
    needSplittingFromWorkspace = false
    break
  }
}

if (needSplittingFromWorkspace) {
  node { // When there are no previous build, we need to estimate splits from files which require workspace
    checkout scm
    splits = splitTests estimateTestsFromFiles: true, parallelism: count(10)
  }
} else {
  splits = splitTests count(10)
}

def axes = [
  jenkinsVersions: ['lts', 'latest'],
  platforms: ['linux'],
  jdks: [11, 21],
  browsers: ['firefox'],
]

stage('Record builds and sessions') {
  retry(conditions: [kubernetesAgent(handleNonKubernetes: true), nonresumable()], count: 2) {
    node('maven-21') {
      infra.checkoutSCM()
      def athCommit = sh(script: 'git rev-parse HEAD', returnStdout: true).trim()
      withCredentials([string(credentialsId: 'launchable-jenkins-acceptance-test-harness', variable: 'LAUNCHABLE_TOKEN')]) {
        sh 'launchable verify && launchable record commit'
      }
      axes['jenkinsVersions'].each { jenkinsVersion ->
        infra.withArtifactCachingProxy {
          sh "rm -rf target && DISPLAY=:0 ./run.sh firefox ${jenkinsVersion} -Dmaven.repo.local=${WORKSPACE_TMP}/m2repo -B clean process-test-resources"
        }
        def coreCommit = sh(script: './core-commit.sh', returnStdout: true).trim()
        /*
         * TODO Add the commits of the transitive closure of the Jenkins WAR under test and the ATH
         * JAR to this build.
         */
        withCredentials([string(credentialsId: 'launchable-jenkins-acceptance-test-harness', variable: 'LAUNCHABLE_TOKEN')]) {
          sh "launchable verify && launchable record build --name ${env.BUILD_TAG}-${jenkinsVersion} --no-commit-collection --commit jenkinsci/acceptance-test-harness=${athCommit} --commit jenkinsci/jenkins=${coreCommit}"
        }
      }
      withCredentials([string(credentialsId: 'launchable-jenkins-acceptance-test-harness', variable: 'LAUNCHABLE_TOKEN')]) {
        axes.values().combinations {
          def (jenkinsVersion, platform, jdk, browser) = it
          def sessionFile = "launchable-session-${jenkinsVersion}-${platform}-jdk${jdk}-${browser}.txt"
          sh "launchable record session --build ${env.BUILD_TAG}-${jenkinsVersion} --flavor platform=${platform} --flavor jdk=${jdk} --flavor browser=${browser} >${sessionFile}"
          stash name: sessionFile, includes: sessionFile
        }
      }
    }
  }
}

branches['CI'] = {
  stage('CI') {
    retry(count: 2, conditions: [kubernetesAgent(handleNonKubernetes: true), nonresumable()]) {
      node('maven-21') {
        checkout scm
        def mavenOptions = [
          '-Dset.changelist',
          '-DskipTests',
          '-U',
          'clean',
          'install',
        ]
        infra.runMaven(mavenOptions, 21)
        infra.prepareToPublishIncrementals()
      }
    }
  }
}

for (int i = 0; i < splits.size(); i++) {
  int index = i
  axes.values().combinations {
    def (jenkinsVersion, platform, jdk, browser) = it
    if (jdk == 21 && jenkinsVersion != 'latest') {
      return
    }
    if (jdk != 21 && jenkinsVersion == 'latest') {
      return
    }
    def name = "${jenkinsVersion}-${platform}-jdk${jdk}-${browser}-split${index}"
    branches[name] = {
      stage(name) {
        int retryCounts = 1
        retry(count: 2, conditions: [agent(), nonresumable()]) {
          String nodeLabel = 'docker-highmem-nonspot'
          if (retryCounts == 1) {
            // Use a spot instance for the first try
            nodeLabel = 'docker-highmem'
          }
          retryCounts = retryCounts + 1 // increment the retry count before allocating a node in case it fails
          node(nodeLabel) {
            checkout scm
            sh 'mkdir -p target/ath-reports && chmod a+rwx target/ath-reports'
            def cwd = pwd()
            docker.image('jenkins/ath').inside("-v /var/run/docker.sock:/var/run/docker.sock -v '${cwd}/target/ath-reports:/reports:rw' --shm-size 2g") {
              def exclusions = splits.get(index).join('\n')
              writeFile file: 'excludes.txt', text: exclusions
              infra.withArtifactCachingProxy {
                realtimeJUnit(
                    testResults: 'target/surefire-reports/TEST-*.xml',
                    testDataPublishers: [[$class: 'AttachmentPublisher']],
                    // Slow test(s) removal can causes a split to get empty which otherwise fails the build.
                    // The build failure prevents parallel tests executor to realize the tests are gone so same
                    // split is run to execute and report zero tests - which fails the build. Permit the test
                    // results to be empty to break the circle: build after removal executes one empty split
                    // but not letting the build to fail will cause next build not to try those tests again.
                    allowEmptyResults: true
                    ) {
                      sh """
                          set-java.sh ${jdk}
                          eval \$(vnc.sh)
                          java -version
                          run.sh ${browser} ${jenkinsVersion} -Dmaven.repo.local=${WORKSPACE_TMP}/m2repo -Dmaven.test.failure.ignore=true -DforkCount=1 -B
                          cp --verbose target/surefire-reports/TEST-*.xml /reports
                          """
                    }
              }
            }
            withCredentials([string(credentialsId: 'launchable-jenkins-acceptance-test-harness', variable: 'LAUNCHABLE_TOKEN')]) {
              def sessionFile = "launchable-session-${jenkinsVersion}-${platform}-jdk${jdk}-${browser}.txt"
              unstash sessionFile
              def session = readFile(sessionFile).trim()
              sh "launchable verify && launchable record tests --session ${session} maven './target/ath-reports'"
            }
          }
        }
      }
    }
  }
}
parallel branches
infra.maybePublishIncrementals()