Adding multi jdk build
diff --git a/vars/multiJdkBuild.groovy b/vars/multiJdkBuild.groovy
new file mode 100644
index 0000000..c0a6af4
--- /dev/null
+++ b/vars/multiJdkBuild.groovy
@@ -0,0 +1,155 @@
+#!groovy
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+/*
+ * Library for running jenkins pipeline builds with multiple JDKs. 
+ * You can add the library to your Jenkins configuration and put the following line
+ * to the Jenkinsfile:
+ * <code>asfStandardBuild()</code>
+ *
+ * If you have want to use it in your local jenkins installation you can add the 
+ * environment variable: <code>NONAPACHEORG_RUN=y</code> to your central jenkins
+ * configuration. That means that not deploy task is executed, only install.
+ */
+
+
+def call(Map params = [:]) {
+  // Faster build and reduces IO needs
+  properties([
+    disableConcurrentBuilds(),
+    durabilityHint('PERFORMANCE_OPTIMIZED'),
+    buildDiscarder(logRotator(numToKeepStr: '5', artifactNumToKeepStr: '3'))
+  ])
+
+  // now determine params
+  def jdk = params.containsKey('jdk') ? params.jdk : 'JDK 1.8 (latest)'
+  def jdk11 = params.containsKey('jdk11') ? params.jdk : 'JDK 11 (latest)'
+  // use the cmdLine parameter otherwise default depending on current branch
+  def cmdline = params.containsKey('cmdline') ? params.cmdline : ((env.NONAPACHEORG_RUN != 'y' && env.BRANCH_NAME == 'master') ?"clean deploy":"clean install")
+  def cmdlineJdk11 = params.containsKey('cmdlineJdk11') ? params.cmdlineJdk11 : "clean install"
+  def mvnName = params.containsKey('mvnName') ? params.mvnName : 'Maven 3.5.4'
+
+
+  def defaultPublishers = [artifactsPublisher(disabled: false), junitPublisher(ignoreAttachments: false, disabled: false),
+                          findbugsPublisher(disabled: true), openTasksPublisher(disabled: true),
+                           dependenciesFingerprintPublisher(disabled: false), invokerPublisher(disabled: true),
+                            pipelineGraphPublisher(disabled: false), mavenLinkerPublisher(disabled: false)]
+
+  def publishers = params.containsKey('publishers') ? params.publishers : defaultPublishers
+
+
+  pipeline {
+    agent any
+    stages{
+      stage("Build JDK8"){
+        agent { node { label 'ubuntu' } }
+        options { timeout(time: 120, unit: 'MINUTES') }
+        steps{
+          mavenBuild( jdk, cmdline, mvnName, publishers)
+        }
+      }
+      stage("Build JDK11"){
+        agent { node { label 'ubuntu' } }
+        options { timeout(time: 120, unit: 'MINUTES') }
+        steps{
+          mavenBuild( jdk11, cmdlineJdk11, mvnName, publishers)
+        } 
+      } 
+    }
+    post {
+      always {
+        cleanWs() // deleteDirs: true, notFailBuild: true, patterns: [[pattern: '**/.repository/**', type: 'INCLUDE']]
+      }
+      unstable {
+        script{
+          notifyBuild( "Unstable Build ")
+        }
+      }
+      failure {
+        script{
+          notifyBuild( "Error in build ")
+        }
+      }
+      success {
+        script {
+          def previousResult = currentBuild.previousBuild?.result
+          if (previousResult && !currentBuild.resultIsWorseOrEqualTo( previousResult ) ) {
+            notifyBuild( "Fixed" )
+          }
+        }
+      }
+    }
+  }
+}
+
+/**
+ * To other developers, if you are using this method above, please use the following syntax.
+ *
+ * mavenBuild("<jdk>", "<profiles> <goals> <plugins> <properties>"
+ *
+ * @param jdk the jdk tool name (in jenkins) to use for this build
+ * @param cmdline the command line in "<profiles> <goals> <properties>"`format.
+ * @paran mvnName maven installation to use
+ * @param publishers array of publishers to configure (need to be defined as we publisherStrategy: 'EXPLICIT')
+ * @return the Jenkinsfile step representing a maven build
+ */
+def mavenBuild(jdk, cmdline, mvnName, publishers) {
+  def localRepo = "../.maven_repositories/${env.EXECUTOR_NUMBER}" // ".repository" //
+  def settingsName = 'archiva-uid-jenkins'
+  def mavenOpts = '-Xms1g -Xmx4g -Djava.awt.headless=true'
+
+  withMaven(
+          maven: mvnName,
+          jdk: "$jdk",
+          options: publishers,
+          publisherStrategy: 'EXPLICIT',
+          //globalMavenSettingsConfig: settingsName,
+          mavenOpts: mavenOpts,
+          mavenLocalRepo: localRepo) {
+    // Some common Maven command line + provided command line
+    sh "mvn -V -B -U -e -Dmaven.test.failure.ignore=true $cmdline "
+  }
+}
+
+def notifyBuild(String buildStatus) {
+  // default the value
+  buildStatus = buildStatus ?: "UNKNOWN"
+
+  def email = "notifications@archiva.apache.org"
+  def summary = "${env.JOB_NAME}#${env.BUILD_NUMBER} - ${buildStatus} - ${currentBuild?.currentResult}"
+  def detail = """<h4>Job: <a href='${env.JOB_URL}'>${env.JOB_NAME}</a> [#${env.BUILD_NUMBER}]</h4>
+  <p><b>${buildStatus}</b></p>
+  <table>
+    <tr><td>Build</td><td><a href='${env.BUILD_URL}'>${env.BUILD_URL}</a></td><tr>
+    <tr><td>Console</td><td><a href='${env.BUILD_URL}console'>${env.BUILD_URL}console</a></td><tr>
+    <tr><td>Test Report</td><td><a href='${env.BUILD_URL}testReport/'>${env.BUILD_URL}testReport/</a></td><tr>
+  </table>
+  """
+
+  emailext(
+          to: email,
+          subject: summary,
+          body: detail,
+          mimeType: 'text/html'
+  )
+}
+
+// vim: et:ts=2:sw=2:ft=groovy