jenkins: update to latest template

Jenkinsfile

@@ -1,28 +0,0 @@
-final String gitRepoUrl = 'git@github.com:kemitix/kemitix-parent.git'
-final String mvn = "mvn --batch-mode --update-snapshots"
-
-pipeline {
-    agent any
-    stages {
-        stage('Prepare') {
-            steps {
-                git url: gitRepoUrl, branch: '**', credentialsId: 'github-kemitix'
-            }
-        }
-        stage('Build') {
-            steps {
-                withMaven(maven: 'maven 3.5.2', jdk: 'JDK 1.8') {
-                    sh "${mvn} clean install"
-                }
-            }
-        }
-        stage('Deploy') {
-            when { expression { (env.GIT_BRANCH == 'master') } }
-            steps {
-                withMaven(maven: 'maven 3.5.2', jdk: 'JDK 1.8') {
-                    sh "${mvn} deploy --activate-profiles release"
-                }
-            }
-        }
-    }
-}

Jenkinsfile.groovy

@@ -0,0 +1,57 @@
+final String repoName = "kemitix-parent"
+final String repoUrl = "git@github.com:kemitix/${repoName}.git"
+final String mvn = "mvn --batch-mode --update-snapshots"
+
+pipeline {
+    agent any
+    stages {
+        stage('Prepare') {
+            steps {
+                git url: repoUrl, branch: '**', credentialsId: 'github-kemitix'
+            }
+        }
+        stage('no SNAPSHOT in master') {
+            // checks that the pom version is not a snapshot when the current branch is master
+            // TODO: also check for SNAPSHOT when is a pull request with master as the target branch
+            when {
+                expression {
+                    (env.GIT_BRANCH == 'master') &&
+                            (readMavenPom(file: 'pom.xml').version).contains("SNAPSHOT") }
+            }
+            steps {
+                error("Build failed because SNAPSHOT version")
+            }
+        }
+        stage('Build') {
+            parallel {
+                stage('Java 8') {
+                    steps {
+                        withMaven(maven: 'maven 3.5.2', jdk: 'JDK 1.8') {
+                            sh "${mvn} clean install"
+                        }
+                    }
+                }
+                stage('Java 9') {
+                    steps {
+                        withMaven(maven: 'maven 3.5.2', jdk: 'JDK 9') {
+                            sh 'mvn clean install'
+                        }
+                    }
+                }
+            }
+        }
+        stage('Archiving') {
+            steps {
+                archiveArtifacts 'pom.xml'
+            }
+        }
+        stage('Deploy') {
+            when { expression { (env.GIT_BRANCH == 'master') } }
+            steps {
+                withMaven(maven: 'maven 3.5.2', jdk: 'JDK 1.8') {
+                    sh "${mvn} deploy --activate-profiles release -DskipTests=true"
+                }
+            }
+        }
+    }
+}