Merge branch 'rp/redirect-to-add-environment-id-to-metrics-dashboard-url' into 'master'

Redirect to default environment when there is no environment in parameters

See merge request gitlab-org/gitlab!40608

app/controllers/projects/metrics_dashboard_controller.rb

@@ -6,6 +6,8 @@ module Projects
     # app/controllers/projects/environments_controller.rb
     # See https://gitlab.com/gitlab-org/gitlab/-/issues/226002 for more details.
 
+    include Gitlab::Utils::StrongMemoize
+
     before_action :authorize_metrics_dashboard!
     before_action do
       push_frontend_feature_flag(:prometheus_computed_alerts)
@@ -15,6 +17,8 @@ module Projects
     def show
       if environment
         render 'projects/environments/metrics'
+      elsif default_environment
+        redirect_to project_metrics_dashboard_path(project, environment: default_environment)
       else
         render 'projects/environments/empty_metrics'
       end
@@ -23,10 +27,13 @@ module Projects
     private
 
     def environment
-      @environment ||=
-        if params[:environment]
-          project.environments.find(params[:environment])
-        else
+      strong_memoize(:environment) do
+        project.environments.find(params[:environment]) if params[:environment]
+      end
+    end
+
+    def default_environment
+      strong_memoize(:default_environment) do
         project.default_environment
       end
     end

spec/requests/projects/metrics_dashboard_spec.rb

@@ -2,7 +2,7 @@
 
 require 'spec_helper'
 
-RSpec.describe 'metrics dashboard page' do
+RSpec.describe 'Projects::MetricsDashboardController' do
   let_it_be(:project) { create(:project) }
   let_it_be(:environment) { create(:environment, project: project) }
   let_it_be(:environment2) { create(:environment, project: project) }
@@ -16,12 +16,12 @@ RSpec.describe 'metrics dashboard page' do
   describe 'GET /:namespace/:project/-/metrics' do
     it 'returns 200' do
       send_request
-      expect(response).to have_gitlab_http_status(:ok)
+      expect(response).to redirect_to(dashboard_route(environment: environment))
     end
 
-    it 'assigns environment' do
+    it 'assigns default_environment' do
       send_request
-      expect(assigns(:environment).id).to eq(environment.id)
+      expect(assigns(:default_environment).id).to eq(environment.id)
     end
 
     context 'with anonymous user and public dashboard visibility' do
@@ -64,12 +64,12 @@ RSpec.describe 'metrics dashboard page' do
     let(:dashboard_path) { '.gitlab/dashboards/dashboard_path.yml' }
 
     it 'returns 200' do
-      send_request(dashboard_path: dashboard_path)
+      send_request(dashboard_path: dashboard_path, environment: environment.id)
       expect(response).to have_gitlab_http_status(:ok)
     end
 
     it 'assigns environment' do
-      send_request(dashboard_path: dashboard_path)
+      send_request(dashboard_path: dashboard_path, environment: environment.id)
       expect(assigns(:environment).id).to eq(environment.id)
     end
   end
@@ -98,14 +98,14 @@ RSpec.describe 'metrics dashboard page' do
   describe 'GET :/namespace/:project/-/metrics/:page' do
     it 'returns 200 with path param page' do
       # send_request(page: 'panel/new') cannot be used because it encodes '/'
-      get "#{dashboard_route}/panel/new"
+      get "#{dashboard_route}/panel/new?environment=#{environment.id}"
 
       expect(response).to have_gitlab_http_status(:ok)
     end
 
     it 'returns 200 with dashboard and path param page' do
       # send_request(page: 'panel/new') cannot be used because it encodes '/'
-      get "#{dashboard_route(dashboard_path: 'dashboard.yml')}/panel/new"
+      get "#{dashboard_route(dashboard_path: 'dashboard.yml')}/panel/new?environment=#{environment.id}"
 
       expect(response).to have_gitlab_http_status(:ok)
     end