Specify a dropdown name for dashboards

lib/gitlab/metrics/dashboard/project_dashboard_service.rb

@@ -13,12 +13,23 @@ module Gitlab
           def all_dashboard_paths(project)
             file_finder(project)
               .list_files_for(DASHBOARD_ROOT)
-              .map { |filepath| { path: filepath, default: false } }
+              .map do |filepath|
+                {
+                  path: filepath,
+                  display_name: name_for_path(filepath),
+                  default: false
+                }
+              end
           end
 
           def file_finder(project)
             Gitlab::Template::Finders::RepoTemplateFinder.new(project, DASHBOARD_ROOT, '.yml')
           end
+
+          # Grabs the filepath after the base directory.
+          def name_for_path(filepath)
+            filepath.delete_prefix("#{DASHBOARD_ROOT}/")
+          end
         end
 
         private

lib/gitlab/metrics/dashboard/system_dashboard_service.rb

@@ -7,11 +7,13 @@ module Gitlab
     module Dashboard
       class SystemDashboardService < Gitlab::Metrics::Dashboard::BaseService
         SYSTEM_DASHBOARD_PATH = 'config/prometheus/common_metrics.yml'
+        SYSTEM_DASHBOARD_NAME = 'Default'
 
         class << self
           def all_dashboard_paths(_project)
             [{
               path: SYSTEM_DASHBOARD_PATH,
+              display_name: SYSTEM_DASHBOARD_NAME,
               default: true
             }]
           end

spec/lib/gitlab/metrics/dashboard/finder_spec.rb

@@ -49,7 +49,7 @@ describe Gitlab::Metrics::Dashboard::Finder, :use_clean_rails_memory_store_cachi
 
   describe '.find_all_paths' do
     let(:all_dashboard_paths) { described_class.find_all_paths(project) }
-    let(:system_dashboard) { { path: system_dashboard_path, default: true } }
+    let(:system_dashboard) { { path: system_dashboard_path, display_name: 'Default', default: true } }
 
     it 'includes only the system dashboard by default' do
       expect(all_dashboard_paths).to eq([system_dashboard])
@@ -60,7 +60,7 @@ describe Gitlab::Metrics::Dashboard::Finder, :use_clean_rails_memory_store_cachi
       let(:project) { project_with_dashboard(dashboard_path) }
 
       it 'includes system and project dashboards' do
-        project_dashboard = { path: dashboard_path, default: false }
+        project_dashboard = { path: dashboard_path, display_name: 'test.yml', default: false }
 
         expect(all_dashboard_paths).to contain_exactly(system_dashboard, project_dashboard)
       end

spec/lib/gitlab/metrics/dashboard/project_dashboard_service_spec.rb

@@ -59,4 +59,29 @@ describe Gitlab::Metrics::Dashboard::ProjectDashboardService, :use_clean_rails_m
       it_behaves_like 'misconfigured dashboard service response', :unprocessable_entity
     end
   end
+
+  describe '::all_dashboard_paths' do
+    let(:all_dashboards) { described_class.all_dashboard_paths(project) }
+
+    context 'when there are no project dashboards' do
+      it 'returns an empty array' do
+        expect(all_dashboards).to be_empty
+      end
+    end
+
+    context 'when there are project dashboards available' do
+      let(:dashboard_path) { '.gitlab/dashboards/test.yml' }
+      let(:project) { project_with_dashboard(dashboard_path) }
+
+      it 'returns the dashboard attributes' do
+        expect(all_dashboards).to eq(
+          [{
+            path: dashboard_path,
+            display_name: 'test.yml',
+            default: false
+          }]
+        )
+      end
+    end
+  end
 end

spec/lib/gitlab/metrics/dashboard/system_dashboard_service_spec.rb

@@ -29,4 +29,18 @@ describe Gitlab::Metrics::Dashboard::SystemDashboardService, :use_clean_rails_me
       it_behaves_like 'valid dashboard service response'
     end
   end
+
+  describe '::all_dashboard_paths' do
+    it 'returns the dashboard attributes' do
+      all_dashboards = described_class.all_dashboard_paths(project)
+
+      expect(all_dashboards).to eq(
+        [{
+          path: described_class::SYSTEM_DASHBOARD_PATH,
+          display_name: described_class::SYSTEM_DASHBOARD_NAME,
+          default: true
+        }]
+      )
+    end
+  end
 end