Added Rollbacker workers and support on the rake task

Rollback is done similar to Migration for the Hashed Storage.
It also shares the same ExclusiveLease key to prevent both happening
at the same time.

All Hashed Storage related workers now share the same queue namespace
which allows for assigning dedicated workers easily.

1 files changed, 11 insertions, 1 deletions

diff --git a/lib/gitlab/hashed_storage/rake_helper.rb b/lib/gitlab/hashed_storage/rake_helper.rb
index 38f552fab03..87a31a37e3f 100644
--- a/lib/gitlab/hashed_storage/rake_helper.rb
+++ b/lib/gitlab/hashed_storage/rake_helper.rb
@@ -24,7 +24,7 @@ module Gitlab
       end
 
       # rubocop: disable CodeReuse/ActiveRecord
-      def self.project_id_batches(&block)
+      def self.project_id_batches_migration(&block)
         Project.with_unmigrated_storage.in_batches(of: batch_size, start: range_from, finish: range_to) do |relation| # rubocop: disable Cop/InBatches
           ids = relation.pluck(:id)
 
@@ -34,6 +34,16 @@ module Gitlab
       # rubocop: enable CodeReuse/ActiveRecord
 
       # rubocop: disable CodeReuse/ActiveRecord
+      def self.project_id_batches_rollback(&block)
+        Project.with_storage_feature(:repository).in_batches(of: batch_size, start: range_from, finish: range_to) do |relation| # rubocop: disable Cop/InBatches
+          ids = relation.pluck(:id)
+
+          yield ids.min, ids.max
+        end
+      end
+      # rubocop: enable CodeReuse/ActiveRecord
+
+      # rubocop: disable CodeReuse/ActiveRecord
       def self.legacy_attachments_relation
         Upload.joins(<<~SQL).where('projects.storage_version < :version OR projects.storage_version IS NULL', version: Project::HASHED_STORAGE_FEATURES[:attachments])
           JOIN projects