[JENKINS-41516] Add script console listener

core/src/main/java/jenkins/model/Jenkins.java

@@ -4694,6 +4694,7 @@ public void run() {
      * Run arbitrary Groovy script.
      */
     public void doScript(StaplerRequest req, StaplerResponse rsp) throws IOException, ServletException {
+
         _doScript(req, rsp, req.getView(this, "_script.jelly"), FilePath.localChannel, getACL());
     }
 
@@ -4722,6 +4723,7 @@ public static void _doScript(StaplerRequest req, StaplerResponse rsp, RequestDis
             }
 
             try {
+                ScriptListener.fireScriptEvent(req);
                 req.setAttribute("output",
                         RemotingDiagnostics.executeGroovy(text, channel));
             } catch (InterruptedException e) {

core/src/main/java/jenkins/model/ScriptListener.java

@@ -0,0 +1,34 @@
+package jenkins.model;
+
+import hudson.ExtensionPoint;
+import jenkins.util.Listeners;
+import org.kohsuke.accmod.Restricted;
+import org.kohsuke.accmod.restrictions.NoExternalUse;
+import org.kohsuke.stapler.StaplerRequest;
+
+/**
+ * A listener to track usage of the script console.
+ *
+ * @see Jenkins#_doScript(StaplerRequest, org.kohsuke.stapler.StaplerResponse, javax.servlet.RequestDispatcher, hudson.remoting.VirtualChannel, hudson.security.ACL)
+ */
+public interface ScriptListener extends ExtensionPoint {
+
+    /**
+     * Called when script is executed in Script console.
+     *
+     * @see Jenkins#_doScript(StaplerRequest, org.kohsuke.stapler.StaplerResponse, javax.servlet.RequestDispatcher, hudson.remoting.VirtualChannel, hudson.security.ACL)
+     * @param req The StaplerRequest (POST) that contains the script to be executed.
+     */
+    void onScript(StaplerRequest req);
+
+    /**
+     * Fires the {@link #onScript(StaplerRequest)} event to track the usage of the script console.
+     *
+     * @see Jenkins#_doScript(StaplerRequest, org.kohsuke.stapler.StaplerResponse, javax.servlet.RequestDispatcher, hudson.remoting.VirtualChannel, hudson.security.ACL)
+     * @param req The StaplerRequest (POST) that contians the script to be executed.
+     */
+    @Restricted(NoExternalUse.class)
+    static void fireScriptEvent(StaplerRequest req) {
+        Listeners.notify(ScriptListener.class, true, listener -> listener.onScript(req));
+    }
+}