Track events for logged_out_marketing_header experiment

app/controllers/registrations_controller.rb

@@ -35,6 +35,7 @@ class RegistrationsController < Devise::RegistrationsController
 
       persist_accepted_terms_if_required(new_user)
       set_role_required(new_user)
+      track_experiment_event(new_user)
 
       if pending_approval?
         NotificationService.new.new_instance_access_request(new_user)
@@ -223,6 +224,14 @@ class RegistrationsController < Devise::RegistrationsController
   def context_user
     current_user
   end
+
+  def track_experiment_event(new_user)
+    # Track signed up event to relate it with click "Sign up" button events from
+    # the experimental logged out header with marketing links. This allows us to
+    # have a funnel of visitors clicking on the header and those visitors
+    # signing up and becoming users
+    experiment(:logged_out_marketing_header, actor: new_user).track(:signed_up) if new_user.persisted?
+  end
 end
 
 RegistrationsController.prepend_mod_with('RegistrationsController')

app/services/groups/create_service.rb

@@ -61,6 +61,8 @@ module Groups
         delay = Namespaces::InviteTeamEmailService::DELIVERY_DELAY_IN_MINUTES
         Namespaces::InviteTeamEmailWorker.perform_in(delay, group.id, current_user.id)
       end
+
+      track_experiment_event
     end
 
     def remove_unallowed_params
@@ -112,6 +114,15 @@ module Groups
       @group.shared_runners_enabled = @group.parent.shared_runners_enabled
       @group.allow_descendants_override_disabled_shared_runners = @group.parent.allow_descendants_override_disabled_shared_runners
     end
+
+    def track_experiment_event
+      return unless group.persisted?
+
+      # Track namespace created events to relate them with signed up events for
+      # the same experiment.  This will let us associate created namespaces to
+      # users that signed up from the experimental logged out header.
+      experiment(:logged_out_marketing_header, actor: current_user).track(:namespace_created, namespace: group)
+    end
   end
 end
 

app/views/layouts/header/_default.html.haml

@@ -139,15 +139,15 @@
             - experiment(:logged_out_marketing_header, actor: nil) do |e|
               - e.candidate do
                 %li.nav-item.gl-display-none.gl-sm-display-block
-                  = link_to _('Sign up now'), new_user_registration_path, class: 'gl-button btn btn-default btn-sign-in'
+                  = link_to _('Sign up now'), new_user_registration_path, class: 'gl-button btn btn-default btn-sign-in', data: { track_action: 'click_button', track_experiment: e.name, track_label: 'sign_up_now' }
                 %li.nav-item.gl-display-none.gl-sm-display-block
                   = link_to _('Login'), new_session_path(:user, redirect_to_referer: 'yes')
                 = render 'layouts/header/sign_in_register_button', class: 'gl-sm-display-none'
               - e.try(:trial_focused) do
                 %li.nav-item.gl-display-none.gl-sm-display-block
-                  = link_to _('Get a free trial'), 'https://about.gitlab.com/free-trial/', class: 'gl-button btn btn-default btn-sign-in'
+                  = link_to _('Get a free trial'), 'https://about.gitlab.com/free-trial/', class: 'gl-button btn btn-default btn-sign-in', data: { track_action: 'click_button', track_experiment: e.name, track_label: 'get_a_free_trial' }
                 %li.nav-item.gl-display-none.gl-sm-display-block
-                  = link_to _('Sign up'), new_user_registration_path
+                  = link_to _('Sign up'), new_user_registration_path, data: { track_action: 'click_button', track_experiment: e.name, track_label: 'sign_up' }
                 %li.nav-item.gl-display-none.gl-sm-display-block
                   = link_to _('Login'), new_session_path(:user, redirect_to_referer: 'yes')
                 = render 'layouts/header/sign_in_register_button', class: 'gl-sm-display-none'

spec/controllers/registrations_controller_spec.rb

@@ -456,6 +456,28 @@ RSpec.describe RegistrationsController do
 
       subject
     end
+
+    describe 'logged_out_marketing_header experiment', :experiment do
+      before do
+        stub_experiments(logged_out_marketing_header: :candidate)
+      end
+
+      it 'tracks signed_up event' do
+        expect(experiment(:logged_out_marketing_header)).to track(:signed_up).on_next_instance
+
+        subject
+      end
+
+      context 'when registration fails' do
+        let_it_be(:user_params) { { user: base_user_params.merge({ username: '' }) } }
+
+        it 'does not track signed_up event' do
+          expect(experiment(:logged_out_marketing_header)).not_to track(:signed_up)
+
+          subject
+        end
+      end
+    end
   end
 
   describe '#destroy' do

spec/services/groups/create_service_spec.rb

@@ -289,4 +289,33 @@ RSpec.describe Groups::CreateService, '#execute' do
       end
     end
   end
+
+  describe 'logged_out_marketing_header experiment', :experiment do
+    let(:service) { described_class.new(user, group_params) }
+
+    subject { service.execute }
+
+    before do
+      stub_experiments(logged_out_marketing_header: :candidate)
+    end
+
+    it 'tracks signed_up event' do
+      expect(experiment(:logged_out_marketing_header)).to track(
+        :namespace_created,
+        namespace: an_instance_of(Group)
+      ).on_next_instance.with_context(actor: user)
+
+      subject
+    end
+
+    context 'when group has not been persisted' do
+      let(:service) { described_class.new(user, group_params.merge(name: '<script>alert("Attack!")</script>')) }
+
+      it 'does not track signed_up event' do
+        expect(experiment(:logged_out_marketing_header)).not_to track(:namespace_created)
+
+        subject
+      end
+    end
+  end
 end