Remove default-enabled cascading_namespace_settings feature flag

The feature has been used in production for several months without
any reported problems. Feature was default-enabled so behavior
will not change after removal except if the feature had been
disabled in an instance.

Changelog: other

app/helpers/namespaces_helper.rb

@@ -56,10 +56,6 @@ module NamespacesHelper
     namespaces_options(selected, **options)
   end
 
-  def cascading_namespace_settings_enabled?
-    NamespaceSetting.cascading_settings_feature_enabled?
-  end
-
   def cascading_namespace_settings_popover_data(attribute, group, settings_path_helper)
     locked_by_ancestor = group.namespace_settings.public_send("#{attribute}_locked_by_ancestor?") # rubocop:disable GitlabSecurity/PublicSend
 

app/models/concerns/cascading_namespace_setting_attribute.rb

@@ -24,10 +24,6 @@ module CascadingNamespaceSettingAttribute
   include Gitlab::Utils::StrongMemoize
 
   class_methods do
-    def cascading_settings_feature_enabled?
-      ::Feature.enabled?(:cascading_namespace_settings, default_enabled: true)
-    end
-
     private
 
     # Facilitates the cascading lookup of values and,
@@ -82,8 +78,6 @@ module CascadingNamespaceSettingAttribute
     def define_attr_reader(attribute)
       define_method(attribute) do
         strong_memoize(attribute) do
-          next self[attribute] unless self.class.cascading_settings_feature_enabled?
-
           next self[attribute] if will_save_change_to_attribute?(attribute)
           next locked_value(attribute) if cascading_attribute_locked?(attribute, include_self: false)
           next self[attribute] unless self[attribute].nil?
@@ -189,7 +183,6 @@ module CascadingNamespaceSettingAttribute
   end
 
   def locked_ancestor(attribute)
-    return unless self.class.cascading_settings_feature_enabled?
     return unless namespace.has_parent?
 
     strong_memoize(:"#{attribute}_locked_ancestor") do
@@ -202,14 +195,10 @@ module CascadingNamespaceSettingAttribute
   end
 
   def locked_by_ancestor?(attribute)
-    return false unless self.class.cascading_settings_feature_enabled?
-
     locked_ancestor(attribute).present?
   end
 
   def locked_by_application_setting?(attribute)
-    return false unless self.class.cascading_settings_feature_enabled?
-
     Gitlab::CurrentSettings.public_send("lock_#{attribute}") # rubocop:disable GitlabSecurity/PublicSend
   end
 

app/views/shared/namespaces/cascading_settings/_enforcement_checkbox.html.haml

@@ -3,7 +3,7 @@
 - setting_locked = local_assigns.fetch(:setting_locked, false)
 - help_text = local_assigns.fetch(:help_text, s_('CascadingSettings|Subgroups cannot change this setting.'))
 
-- return unless attribute && group && form && cascading_namespace_settings_enabled?
+- return unless attribute && group && form
 - return if setting_locked
 
 - lock_attribute = "lock_#{attribute}"

config/feature_flags/development/cascading_namespace_settings.yml

----
-name: cascading_namespace_settings
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/55678
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/327230
-milestone: '13.11'
-type: development
-group: group::access
-default_enabled: true

ee/app/helpers/groups/settings_helper.rb

@@ -13,18 +13,10 @@ module Groups
     private
 
     def delayed_project_removal_i18n_string
-      if cascading_namespace_settings_enabled?
-        if current_user&.can_admin_all_resources?
-          s_('GroupSettings|Projects will be permanently deleted after a %{waiting_period}-day delay. This delay can be %{link_start}customized by an admin%{link_end} in instance settings. Inherited by subgroups.')
-        else
-          s_('GroupSettings|Projects will be permanently deleted after a %{waiting_period}-day delay. Inherited by subgroups.')
-        end
+      if current_user&.can_admin_all_resources?
+        s_('GroupSettings|Projects will be permanently deleted after a %{waiting_period}-day delay. This delay can be %{link_start}customized by an admin%{link_end} in instance settings. Inherited by subgroups.')
       else
-        if current_user&.can_admin_all_resources?
-          s_('GroupSettings|Projects will be permanently deleted after a %{waiting_period}-day delay. This delay can be %{link_start}customized by an admin%{link_end} in instance settings.')
-        else
-          s_('GroupSettings|Projects will be permanently deleted after a %{waiting_period}-day delay.')
-        end
+        s_('GroupSettings|Projects will be permanently deleted after a %{waiting_period}-day delay. Inherited by subgroups.')
       end
     end
   end

ee/spec/helpers/groups/settings_helper_spec.rb

@@ -13,18 +13,15 @@ RSpec.describe Groups::SettingsHelper do
 
     settings_path = '/admin/application_settings/general#js-visibility-settings'
 
-    where(:is_cascading_namespace_settings_enabled, :is_admin, :expected) do
-      true  | true  | "Projects will be permanently deleted after a 7-day delay. This delay can be <a href=\"#{settings_path}\">customized by an admin</a> in instance settings. Inherited by subgroups."
-      true  | false | 'Projects will be permanently deleted after a 7-day delay. Inherited by subgroups.'
-      false | true  | "Projects will be permanently deleted after a 7-day delay. This delay can be <a href=\"#{settings_path}\">customized by an admin</a> in instance settings."
-      false | false | 'Projects will be permanently deleted after a 7-day delay.'
+    where(:is_admin, :expected) do
+      true  | "Projects will be permanently deleted after a 7-day delay. This delay can be <a href=\"#{settings_path}\">customized by an admin</a> in instance settings. Inherited by subgroups."
+      false | 'Projects will be permanently deleted after a 7-day delay. Inherited by subgroups.'
     end
 
     with_them do
       before do
         stub_application_setting(deletion_adjourned_period: 7)
         allow(helper).to receive(:general_admin_application_settings_path).with(anchor: 'js-visibility-settings').and_return(settings_path)
-        stub_feature_flags(cascading_namespace_settings: is_cascading_namespace_settings_enabled)
 
         if is_admin
           allow(helper).to receive(:current_user).and_return(admin)

locale/gitlab.pot

@@ -15727,15 +15727,9 @@ msgstr ""
 msgid "GroupSettings|Prevent sharing a project within %{group} with other groups"
 msgstr ""
 
-msgid "GroupSettings|Projects will be permanently deleted after a %{waiting_period}-day delay."
-msgstr ""
-
 msgid "GroupSettings|Projects will be permanently deleted after a %{waiting_period}-day delay. Inherited by subgroups."
 msgstr ""
 
-msgid "GroupSettings|Projects will be permanently deleted after a %{waiting_period}-day delay. This delay can be %{link_start}customized by an admin%{link_end} in instance settings."
-msgstr ""
-
 msgid "GroupSettings|Projects will be permanently deleted after a %{waiting_period}-day delay. This delay can be %{link_start}customized by an admin%{link_end} in instance settings. Inherited by subgroups."
 msgstr ""
 

spec/helpers/namespaces_helper_spec.rb

@@ -195,26 +195,6 @@ RSpec.describe NamespacesHelper do
     end
   end
 
-  describe '#cascading_namespace_settings_enabled?' do
-    subject { helper.cascading_namespace_settings_enabled? }
-
-    context 'when `cascading_namespace_settings` feature flag is enabled' do
-      it 'returns `true`' do
-        expect(subject).to be(true)
-      end
-    end
-
-    context 'when `cascading_namespace_settings` feature flag is disabled' do
-      before do
-        stub_feature_flags(cascading_namespace_settings: false)
-      end
-
-      it 'returns `false`' do
-        expect(subject).to be(false)
-      end
-    end
-  end
-
   describe '#cascading_namespace_settings_popover_data' do
     attribute = :delayed_project_removal
 

spec/models/concerns/cascading_namespace_setting_attribute_spec.rb

@@ -17,18 +17,6 @@ RSpec.describe NamespaceSetting, 'CascadingNamespaceSettingAttribute' do
   describe '#delayed_project_removal' do
     subject(:delayed_project_removal) { subgroup_settings.delayed_project_removal }
 
-    context 'when the feature is disabled' do
-      before do
-        stub_feature_flags(cascading_namespace_settings: false)
-
-        group_settings.update!(delayed_project_removal: true)
-      end
-
-      it 'does not cascade' do
-        expect(delayed_project_removal).to eq(nil)
-      end
-    end
-
     context 'when there is no parent' do
       context 'and the value is not nil' do
         before do
@@ -192,16 +180,6 @@ RSpec.describe NamespaceSetting, 'CascadingNamespaceSettingAttribute' do
       end
     end
 
-    context 'when the feature is disabled' do
-      before do
-        stub_feature_flags(cascading_namespace_settings: false)
-
-        group_settings.update!(delayed_project_removal: true)
-      end
-
-      it_behaves_like 'not locked'
-    end
-
     context 'when attribute is locked by self' do
       before do
         subgroup_settings.update!(lock_delayed_project_removal: true)