Remove users_search feature flag

This MR removes users_search feature flag, which has been enabled by
default for a long time.

app/controllers/search_controller.rb

@@ -97,8 +97,6 @@ class SearchController < ApplicationController
   end
 
   def eager_load_user_status
-    return if Feature.disabled?(:users_search, default_enabled: true)
-
     @search_objects = @search_objects.eager_load(:status) # rubocop:disable CodeReuse/ActiveRecord
   end
 

app/helpers/search_helper.rb

@@ -305,8 +305,6 @@ module SearchHelper
   end
 
   def show_user_search_tab?
-    return false if Feature.disabled?(:users_search, default_enabled: true)
-
     if @project
       project_search_tabs?(:members)
     else

app/services/search/global_service.rb

@@ -4,6 +4,8 @@ module Search
   class GlobalService
     include Gitlab::Utils::StrongMemoize
 
+    ALLOWED_SCOPES = %w(issues merge_requests milestones users).freeze
+
     attr_accessor :current_user, :params
 
     def initialize(user, params)
@@ -22,11 +24,7 @@ module Search
     end
 
     def allowed_scopes
-      strong_memoize(:allowed_scopes) do
-        allowed_scopes = %w[issues merge_requests milestones]
-        allowed_scopes << 'users' if Feature.enabled?(:users_search, default_enabled: true)
-        allowed_scopes
-      end
+      ALLOWED_SCOPES
     end
 
     def scope

app/services/search/project_service.rb

@@ -2,6 +2,10 @@
 
 module Search
   class ProjectService
+    include Gitlab::Utils::StrongMemoize
+
+    ALLOWED_SCOPES = %w(notes issues merge_requests milestones wiki_blobs commits users).freeze
+
     attr_accessor :project, :current_user, :params
 
     def initialize(project, user, params)
@@ -17,12 +21,13 @@ module Search
                                       )
     end
 
-    def scope
-      @scope ||= begin
-        allowed_scopes = %w[notes issues merge_requests milestones wiki_blobs commits]
-        allowed_scopes << 'users' if Feature.enabled?(:users_search, default_enabled: true)
+    def allowed_scopes
+      ALLOWED_SCOPES
+    end
 
-        allowed_scopes.delete(params[:scope]) { 'blobs' }
+    def scope
+      strong_memoize(:scope) do
+        allowed_scopes.include?(params[:scope]) ? params[:scope] : 'blobs'
       end
     end
   end

config/feature_flags/development/users_search.yml

----
-name: users_search
-introduced_by_url: 
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/255282
-group: group::global search
-type: development
-default_enabled: true

ee/app/services/ee/search/global_service.rb

@@ -52,9 +52,7 @@ module EE
         return super unless use_elasticsearch?
 
         strong_memoize(:ee_allowed_scopes) do
-          super.tap do |ce_scopes|
-            ce_scopes.concat(%w[notes wiki_blobs blobs commits])
-          end
+          super + %w[notes wiki_blobs blobs commits]
         end
       end
     end

ee/app/services/ee/search/group_service.rb

@@ -36,14 +36,10 @@ module EE
 
       override :allowed_scopes
       def allowed_scopes
+        return super unless ::Feature.enabled?(:epics_search) && group.feature_available?(:epics)
+
         strong_memoize(:ee_group_allowed_scopes) do
-          super.tap do |scopes|
-            if ::Feature.enabled?(:epics_search) && group.feature_available?(:epics)
-              scopes << 'epics'
-            else
-              scopes
-            end
-          end
+          super + %w(epics)
         end
       end
     end

lib/api/search.rb

@@ -62,12 +62,6 @@ module API
         # Defining this method here as a noop allows us to easily extend it in
         # EE, without having to modify this file directly.
       end
-
-      def check_users_search_allowed!
-        if params[:scope].to_sym == :users && Feature.disabled?(:users_search, default_enabled: true)
-          render_api_error!({ error: _("Scope not supported with disabled 'users_search' feature!") }, 400)
-        end
-      end
     end
 
     resource :search do
@@ -85,7 +79,6 @@ module API
       end
       get do
         verify_search_scope!(resource: nil)
-        check_users_search_allowed!
 
         present search, with: entity
       end
@@ -107,7 +100,6 @@ module API
       end
       get ':id/(-/)search' do
         verify_search_scope!(resource: user_group)
-        check_users_search_allowed!
 
         present search(group_id: user_group.id), with: entity
       end
@@ -129,8 +121,6 @@ module API
         use :pagination
       end
       get ':id/(-/)search' do
-        check_users_search_allowed!
-
         present search({ project_id: user_project.id, repository_ref: params[:ref] }), with: entity
       end
     end

locale/gitlab.pot

@@ -22298,9 +22298,6 @@ msgstr ""
 msgid "Scope"
 msgstr ""
 
-msgid "Scope not supported with disabled 'users_search' feature!"
-msgstr ""
-
 msgid "Scoped issue boards"
 msgstr ""
 

spec/helpers/search_helper_spec.rb

@@ -357,14 +357,6 @@ RSpec.describe SearchHelper do
   describe '#show_user_search_tab?' do
     subject { show_user_search_tab? }
 
-    context 'when users_search feature is disabled' do
-      before do
-        stub_feature_flags(users_search: false)
-      end
-
-      it { is_expected.to eq(false) }
-    end
-
     context 'when project search' do
       before do
         @project = :some_project

spec/requests/api/search_spec.rb

@@ -231,18 +231,6 @@ RSpec.describe API::Search do
         it_behaves_like 'pagination', scope: :users
 
         it_behaves_like 'ping counters', scope: :users
-
-        context 'when users search feature is disabled' do
-          before do
-            stub_feature_flags(users_search: false)
-
-            get api(endpoint, user), params: { scope: 'users', search: 'billy' }
-          end
-
-          it 'returns 400 error' do
-            expect(response).to have_gitlab_http_status(:bad_request)
-          end
-        end
       end
 
       context 'for snippet_titles scope' do
@@ -416,18 +404,6 @@ RSpec.describe API::Search do
 
           include_examples 'pagination', scope: :users
         end
-
-        context 'when users search feature is disabled' do
-          before do
-            stub_feature_flags(users_search: false)
-
-            get api(endpoint, user), params: { scope: 'users', search: 'billy' }
-          end
-
-          it 'returns 400 error' do
-            expect(response).to have_gitlab_http_status(:bad_request)
-          end
-        end
       end
 
       context 'for users scope with group path as id' do
@@ -589,18 +565,6 @@ RSpec.describe API::Search do
 
           include_examples 'pagination', scope: :users
         end
-
-        context 'when users search feature is disabled' do
-          before do
-            stub_feature_flags(users_search: false)
-
-            get api(endpoint, user), params: { scope: 'users', search: 'billy' }
-          end
-
-          it 'returns 400 error' do
-            expect(response).to have_gitlab_http_status(:bad_request)
-          end
-        end
       end
 
       context 'for notes scope' do