Update helper.groovy

vars/helper.groovy

@@ -6,6 +6,34 @@
 
 /**********************************************************************************************************************/
 
+// helper function, recursively gather a deep list of dependencies
+def gatherDependenciesDeep(ArrayList<String> dependencyList) {
+  def deepList = dependencyList
+  dependencyList.each {
+    node('Docker') {
+      copyArtifacts filter: "dependencyList.txt", fingerprintArtifacts: true, projectName: "${it}", selector: lastSuccessful(), target: "artefacts"
+      def myFile = readFile(env.WORKSPACE+"/artefacts/dependencyList.txt")
+      def dependencyList2 = myFile.split("\n")
+      deepList.addAll(gatherDependenciesDeep(dependencyList2))
+    }
+  }
+  return deepList.unique()
+}
+
+/**********************************************************************************************************************/
+
+// helper function, recursively wait until all dependencies are not building
+def waitForDependencies(ArrayList<String> deepDependencyList) {
+  if(deepDependencyList.size() == 0) return
+  lock("build-${deepDependencyList[0]}") {
+    def deepDependencyListTrunc = deepDependencyList
+    deepDependencyListTrunc.remove(0)
+    waitForDependencies(deepDependencyListTrunc)
+  }
+}
+
+/**********************************************************************************************************************/
+
 def doBuildTestDeploy(ArrayList<String> dependencyList, String label, String buildType, String gitUrl) {
 
   // prepare source directory and dependencies