init script for resolving plugins

resolvePlugins.groovy

@@ -0,0 +1,42 @@
+import jenkins.model.Jenkins
+
+def stepCallMapping = new groovy.json.JsonSlurper().parseText(new File(System.getenv()['calls']).text)
+
+def stepPluginMapping = [:]
+
+println "[INFO] Resolving plugins ..."
+
+for(def step in stepCallMapping) {
+  def resolvedPlugins = [:]
+  for(def call in step.value) {
+     def resolvedPlugin = resolvePlugin(call)
+     if (! resolvedPlugin) resolvedPlugin = 'UNIDENTIFIED'
+     if(resolvedPlugins[resolvedPlugin] == null)
+         resolvedPlugins[resolvedPlugin] = (Set)[]
+     resolvedPlugins[resolvedPlugin] << call
+     stepPluginMapping.put(step.key,resolvedPlugins)
+  }
+}
+
+def result = System.getenv()['result']
+new File(result).write(new groovy.json.JsonOutput().toJson(stepPluginMapping))
+
+println "[INFO] plugins resolved. Result: ${result}."
+
+
+def resolvePlugin(call) {
+
+    def plugins = Jenkins.get().pluginManager.getPlugins()
+
+    def s = new org.jenkinsci.plugins.workflow.cps.Snippetizer()
+
+    def pDescs = s.getQuasiDescriptors(false)
+
+
+    for(def pd in pDescs) {
+        if(pd.getSymbol() == call)
+          return  pd.real.plugin?.shortName
+    }
+    return null
+}
+