Add redis counter for viewing dashboard

When viewing a specific analytics dashboard
we should instrument that as a redis counter

EE: true
Changelog: added

ee/app/controllers/projects/analytics/dashboards_controller.rb

@@ -13,7 +13,10 @@ class DashboardsController < Projects::ApplicationController
         push_frontend_feature_flag(:product_analytics_snowplow_support)
       end
 
-      def index; end
+      def index
+        ::Gitlab::UsageDataCounters::ProductAnalyticsCounter.count(:view_dashboard) if
+          params[:vueroute].present?
+      end
 
       private
 

ee/config/metrics/counts_7d/20230502122452_analytics_dashboard_views.yml

+---
+key_path: counts.analytics_dashboard_views
+description: "Number of views of any single product analytics dashboard"
+product_section: dev
+product_stage: analytics
+product_group: product_analytics
+value_type: number
+status: active
+milestone: "16.0"
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/119328
+time_frame: 7d
+data_source: redis
+data_category: optional
+instrumentation_class: RedisMetric
+options:
+  prefix: product_analytics
+  event: view_dashboard
+distribution:
+- ee
+tier:
+- ultimate

ee/lib/gitlab/usage_data_counters/product_analytics_counter.rb

+# frozen_string_literal: true
+
+module Gitlab
+  module UsageDataCounters
+    class ProductAnalyticsCounter < BaseCounter
+      KNOWN_EVENTS = %w[view_dashboard].freeze
+      PREFIX = 'product_analytics'
+    end
+  end
+end

ee/spec/requests/projects/analytics/dashboards_controller_spec.rb

@@ -19,6 +19,12 @@
 
         expect(response).to have_gitlab_http_status(:not_found)
       end
+
+      it 'does not increment counter' do
+        expect(Gitlab::UsageDataCounters::ProductAnalyticsCounter).not_to receive(:count)
+
+        send_dashboards_request
+      end
     end
 
     shared_examples 'returns success' do
@@ -27,6 +33,12 @@
 
         expect(response).to have_gitlab_http_status(:ok)
       end
+
+      it 'increments counter' do
+        expect(Gitlab::UsageDataCounters::ProductAnalyticsCounter).to receive(:count).with(:view_dashboard)
+
+        send_dashboards_request
+      end
     end
 
     context 'with the feature flag disabled' do
@@ -39,7 +51,7 @@
 
     context 'with the feature flag enabled' do
       before do
-        stub_feature_flags(combined_project_analytics_dashboards: true)
+        stub_feature_flags(combined_analytics_dashboards: true)
       end
 
       context 'without the licensed feature' do
@@ -68,13 +80,19 @@
 
           it_behaves_like params[:example_to_run]
         end
+
+        it 'does not count views for the dashboard listing' do
+          expect(Gitlab::UsageDataCounters::ProductAnalyticsCounter).not_to receive(:count)
+
+          get project_analytics_dashboards_path(project)
+        end
       end
     end
 
     private
 
     def send_dashboards_request
-      get project_analytics_dashboards_path(project)
+      get project_analytics_dashboards_path(project, vueroute: 'dashboard_audience')
     end
   end
 end