Add jenkinsfile that uses functions to create new stages.

Jenkinsfile_withFunctions

@@ -0,0 +1,124 @@
+import groovy.json.JsonSlurper
+import groovy.io.FileType
+
+//locate where this jenkinsfile is
+String releaseURL = "https://code-repo.d4science.org/gCubeCI/gCubeRelease/raw/branch/feature/17273/releases/gcube-${params.gCube_release_number}.json"
+//check and parse the release file
+println "Querying ${releaseURL}"
+def text = releaseURL.toURL().getText()
+def gcubeJSON = new JsonSlurper().parseText(text)
+
+//check that the release number parameter is the one expected
+assert gcubeJSON["gCube.version"] == params.gCube_release_number : "Release versions do not match!"
+
+
+// set the build options according to the Type of build
+def (options,maven_local_repo_path,maven_settings_file) = ['','','']
+def maven_jdk = 'OpenJDK 8'
+def agent_root_folder = '/var/lib/jenkins'
+
+if (params.Type == 'SNAPSHOT-DRY-RUN') {
+	echo "Configure Maven for SNAPSHOT-DRY-RUN artifacts"
+	options = ''
+	maven_local_repo_path = "${agent_root_folder}/local-snapshots"
+	maven_settings_file = "${agent_root_folder}/.m2/jenkins-snapshots-dry-run-settings.xml"
+}
+if (params.Type == 'SNAPSHOT') {
+	echo "Configure Maven for SNAPSHOT artifacts"
+	options = ''
+	maven_local_repo_path = "${agent_root_folder}/local-snapshots"
+	maven_settings_file = "${agent_root_folder}/.m2/jenkins-snapshots-settings.xml"
+}
+if (params.Type == 'RELEASE-DRY-RUN') {
+	echo "Configure Maven for RELEASE-DRY-RUN artifacts"
+	options = ''
+	maven_local_repo_path = "${agent_root_folder}/local-releases"
+	maven_settings_file = "${agent_root_folder}/.m2/jenkins-releases-dry-run-settings.xml"
+}
+if (params.Type == 'RELEASE-STAGING') {
+	echo "Configure Maven for RELEASE-STAGING artifacts"
+	options = ''
+	maven_local_repo_path = "${agent_root_folder}/local-staging"
+	maven_settings_file = "${agent_root_folder}/.m2/jenkins-staging-settings.xml"
+	echo "This will fail. RELEASES are currently disabled until further testing."
+}
+if (params.Type == 'RELEASE') {
+	echo "Configure Maven for RELEASE artifacts"
+	options = ''
+	//maven_local_repo_path = "${agent_root_folder}/local-releases"
+	//maven_settings_file = "${agent_root_folder}/.m2/jenkins-releases-settings.xml"
+	echo "This will fail. RELEASES are currently disabled until further testing."
+}
+echo "Use settings file at ${maven_settings_file}"
+echo "Use local repo at ${maven_local_repo_path}"
+echo "Release number: ${params.gCube_release_number}"
+
+def components = gcubeJSON['Components']
+
+pipeline {
+   // see https://jenkins.io/doc/book/pipeline/syntax/#agent
+    agent any
+   // see https://jenkins.io/doc/book/pipeline/syntax/#environment
+   environment {
+      JOB_OPTIONS = "${options}"
+      MAVEN_LOCAL_REPO = "${maven_local_repo_path}"
+      GCUBE_RELEASE_NUMBER = "${params.gCube_release_number}"
+
+   }
+
+   // see https://jenkins.io/doc/book/pipeline/syntax/#parameters
+   parameters {
+        choice(name: 'Type',
+                choices: ['SNAPSHOT-DRY-RUN', 'SNAPSHOT', 'RELEASE-DRY-RUN', 'RELEASE-STAGING', 'RELEASE'],
+                description: 'The type of artifacts the build is expected to generate')
+
+        string(name: 'gCube_release_number',
+                defaultValue: 'invalid',
+                description: 'The number of the gCube release to build. Ignored by the SNAPSHOT builds. Sample values: 4.14, 4.15, etc.')
+    }
+
+    //see https://jenkins.io/doc/book/pipeline/syntax/#stages
+    stages {
+        stage('clean up before starting') {
+            steps {
+                sh '''
+                echo "Create a fresh local repository"
+                rm -rf $MAVEN_LOCAL_REPO
+                mkdir -p $MAVEN_LOCAL_REPO
+                echo "Done with local repository"
+                '''
+
+            }
+        }
+        stage('Build Components') {
+            stages {
+
+                stage('Build SmartGears components') {
+                  steps {
+                        buildComponents items: (components['SmartGears']).collect { "Stage ${it}" }
+                  }
+                }
+
+                stage('Build Enabling components') {
+                    steps {
+                        buildComponents items: (components['Enabling']).collect { "Stage ${it}" }
+                    }
+                }
+                stage('Build Data components') {
+                     steps {
+                        buildComponents items: (components['Data']).collect { "Stage ${it}" }
+                     }
+                }
+            }
+        }
+    }
+   
+}
+
+def buildComponents(args) {
+  parallel args.items.collectEntries { name -> [ "${name}": {
+    stage("${name}") {
+      echo name
+    }
+  }]}
+}

examples/dynamic_parallel_nested

@@ -18,7 +18,7 @@ for (int i = 0; i < applications.size(); i++) {
         }
     }
 }
-
+// the problem is with more than ONE parallel block
 pipeline {
     agent any
     stages {

examples/with_function

@@ -0,0 +1,18 @@
+pipeline {
+  agent any
+  stages {
+    stage('build') {
+      steps {
+        buildComponents items: ("a".."f").collect { "Stage ${it}" }
+      }
+    }
+  }
+}
+
+def buildComponents(args) {
+  parallel args.items.collectEntries { name -> [ "${name}": {
+    stage("${name}") {
+      echo name
+    }
+  }]}
+}