[eclipse/xtext#1526] Replace Jenkinsfile with content of CBI.Jenkinsfile

This commit purposefully introduces a duplicate Jenkinsfile,
which is meant to be kept long enough for all
branches to receive it.

After this and when the Jenkins jobs point to the new Jenkinsfile,
CBI.Jenkinsfile can be removed without losing build histories in Jenkins

Signed-off-by: Nico Prediger <mail@nicoprediger.de>

Jenkinsfile

@@ -1,48 +1,108 @@
 pipeline {
-  agent any
+  agent {
+    kubernetes {
+      label 'xtext-umbrella-' + env.BRANCH_NAME + '-' + env.BUILD_NUMBER
+      defaultContainer 'xtext-buildenv'
+      yaml '''
+apiVersion: v1
+kind: Pod
+spec:
+  containers:
+  - name: jnlp
+    image: 'eclipsecbi/jenkins-jnlp-agent'
+    args: ['\$(JENKINS_SECRET)', '\$(JENKINS_NAME)']
+    resources:
+      limits:
+        memory: "0.4Gi"
+        cpu: "0.2"
+      requests:
+        memory: "0.4Gi"
+        cpu: "0.2"
+    volumeMounts:
+    - mountPath: /home/jenkins/.ssh
+      name: volume-known-hosts
+  - name: xtext-buildenv
+    image: docker.io/smoht/xtext-buildenv:0.7
+    tty: true
+    resources:
+      limits:
+        memory: "3.6Gi"
+        cpu: "1.0"
+      requests:
+        memory: "3.6Gi"
+        cpu: "1.0"
+    volumeMounts:
+    - name: settings-xml
+      mountPath: /home/jenkins/.m2/settings.xml
+      subPath: settings.xml
+      readOnly: true
+    - name: m2-repo
+      mountPath: /home/jenkins/.m2/repository
+    - name: volume-known-hosts
+      mountPath: /home/jenkins/.ssh
+  volumes:
+  - name: volume-known-hosts
+    configMap:
+      name: known-hosts
+  - name: settings-xml
+    configMap: 
+      name: m2-dir
+      items:
+      - key: settings.xml
+        path: settings.xml
+  - name: m2-repo
+    emptyDir: {}
+    '''
+    }
+  }
 
   options {
-    buildDiscarder(logRotator(numToKeepStr:'5'))
+    buildDiscarder(logRotator(numToKeepStr:'15'))
     disableConcurrentBuilds()
     timeout(time: 60, unit: 'MINUTES')
     timestamps()
   }
 
   // https://jenkins.io/doc/book/pipeline/syntax/#triggers
   triggers {
-    pollSCM('H 2 * * *')
+    cron('H 2 * * *')
   }
-
-  tools { 
-    maven 'M3'
-  }
-
+
   stages {
-    stage('Prepare') {
+    stage('Checkout') {
       steps {
+        script {
+          properties([
+            [$class: 'GithubProjectProperty', displayName: '', projectUrlStr: 'https://github.com/eclipse/xtext-core/'],
+            [$class: 'RebuildSettings', autoRebuild: false, rebuildDisabled: false],
+            pipelineTriggers([githubPush()])
+          ])
+        }
+
         sh '''
           if [ -d ".git" ]; then
-          	git reset --hard
+            git reset --hard
           fi
         '''
-        checkout scm
+
         dir('build') { deleteDir() }
         dir('.m2/repository/org/eclipse/xtext') { deleteDir() }
         dir('.m2/repository/org/eclipse/xtend') { deleteDir() }
+
         sh '''
           sed_inplace() {
-            if [[ "$OSTYPE" == "darwin"* ]]; then
-              sed -i '' "$@"
-            else
-              sed -i "$@" 
-            fi  
+              if [[ "$OSTYPE" == "darwin"* ]]; then
+                  sed -i '' "$@"
+              else
+                  sed -i "$@" 
+              fi    
           }
           
           targetfiles="$(find releng -type f -iname '*.target')"
           for targetfile in $targetfiles
           do
-            echo "Redirecting target platforms in $targetfile to $JENKINS_URL"
-            sed_inplace "s?<repository location=\\".*/job/\\([^/]*\\)/job/\\([^/]*\\)/?<repository location=\\"$JENKINS_URL/job/\\1/job/\\2/?" $targetfile
+              echo "Redirecting target platforms in $targetfile to $JENKINS_URL"
+              sed_inplace "s?<repository location=\\".*/job/\\([^/]*\\)/job/\\([^/]*\\)/?<repository location=\\"$JENKINS_URL/job/\\1/job/\\2/?" $targetfile
           done
         '''
       }
@@ -51,7 +111,14 @@ pipeline {
     stage('Maven Build') {
       steps {
         sh '''
-          mvn -f releng --batch-mode --update-snapshots -fae -Dtycho.disableP2Mirrors=true -Dmaven.repo.local=.m2/repository clean install
+          mvn \
+            -f releng \
+            --batch-mode \
+            --update-snapshots \
+            -fae \
+            -Dmaven.repo.local=$WORKSPACE/.m2/repository \
+            -Dtycho.disableP2Mirrors=true \
+            clean install
         '''
       }
     }
@@ -61,29 +128,41 @@ pipeline {
     success {
       archiveArtifacts artifacts: 'build/**'
     }
-    changed {
+    failure {
+      archiveArtifacts artifacts: '**/target/work/data/.metadata/.log, **/hs_err_pid*.log'
+    }
+    cleanup {
       script {
-        def envName = ''
-        if (env.JENKINS_URL.contains('ci.eclipse.org/xtext')) {
-          envName = ' (JIPP)'
-        } else if (env.JENKINS_URL.contains('typefox.io')) {
-          envName = ' (TF)'
-        }
-
         def curResult = currentBuild.currentResult
-        def color = '#00FF00'
-        if (curResult == 'SUCCESS') {
-           if (currentBuild.previousBuild != null && currentBuild.previousBuild.result != 'SUCCESS') {
-             curResult = 'FIXED'
-           }
-        } else if (curResult == 'UNSTABLE') {
-          color = '#FFFF00'
-        } else { // FAILURE, ABORTED, NOT_BUILD
-          color = '#FF0000'
+        def lastResult = 'NEW'
+        if (currentBuild.previousBuild != null) {
+          lastResult = currentBuild.previousBuild.result
+        }
+
+        if (curResult != 'SUCCESS' || lastResult != 'SUCCESS') {
+          def color = ''
+          switch (curResult) {
+            case 'SUCCESS':
+              color = '#00FF00'
+              break
+            case 'UNSTABLE':
+              color = '#FFFF00'
+              break
+            case 'FAILURE':
+              color = '#FF0000'
+              break
+            default: // e.g. ABORTED
+              color = '#666666'
+          }
+
+          slackSend (
+            message: "${lastResult} => ${curResult}: <${env.BUILD_URL}|${env.JOB_NAME}#${env.BUILD_NUMBER}>",
+            botUser: true,
+            channel: 'xtext-builds',
+            color: "${color}"
+          )
         }
-
-        slackSend message: "${curResult}: <${env.BUILD_URL}|${env.JOB_NAME}#${env.BUILD_NUMBER}${envName}>", botUser: true, channel: 'xtext-builds', color: "${color}"
       }
     }
   }
-}
+}