Merge branch '348415-fj-enable-linera-root-update-mirrors-worker' into 'master'

Enable linear roots in UpdateAllMirrorsWorker

See merge request gitlab-org/gitlab!77854

config/feature_flags/development/linear_mirrors_worker_roots.yml

----
-name: linear_mirrors_worker_roots
-introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/76735
-rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/348415
-milestone: '14.7'
-type: development
-group: group::authentication and authorization
-default_enabled: false

ee/app/workers/update_all_mirrors_worker.rb

@@ -146,16 +146,11 @@ class UpdateAllMirrorsWorker # rubocop:disable Scalability/IdempotentWorker
 
   # rubocop: disable CodeReuse/ActiveRecord
   def root_namespaces_sql
-    namespace = Namespace.where('id = projects.namespace_id')
-
-    if Feature.enabled?(:linear_mirrors_worker_roots, default_enabled: :yaml)
-      namespace.roots.as_ids
-    else
-      Gitlab::ObjectHierarchy
-        .new(namespace)
+    Namespace
+      .where('id = projects.namespace_id')
       .roots
-        .select(:id)
-    end.to_sql
+      .as_ids
+      .to_sql
   end
   # rubocop: enable CodeReuse/ActiveRecord
 

ee/spec/workers/update_all_mirrors_worker_spec.rb

@@ -254,7 +254,6 @@ RSpec.describe UpdateAllMirrorsWorker do
       let(:unlicensed_projects) { [unlicensed_project1, unlicensed_project2, unlicensed_project3, unlicensed_project4] }
 
       context 'when using SQL to filter projects' do
-        shared_examples 'examples checking namespace plans' do
         before do
           allow(subject).to receive(:check_mirror_plans_in_query?).and_return(true)
         end
@@ -280,17 +279,6 @@ RSpec.describe UpdateAllMirrorsWorker do
         end
       end
 
-        it_behaves_like 'examples checking namespace plans'
-
-        context 'when feature flag ' do
-          before do
-            stub_feature_flags(linear_mirrors_worker_roots: false)
-          end
-
-          it_behaves_like 'examples checking namespace plans'
-        end
-      end
-
       context 'when checking licenses on each record individually' do
         before do
           allow(subject).to receive(:check_mirror_plans_in_query?).and_return(false)