Added geo:git:housekeeping:* rake tasks

ee/app/models/geo/project_registry.rb

@@ -72,10 +72,16 @@ class Geo::ProjectRegistry < Geo::BaseRegistry
     Gitlab::Redis::SharedState.with { |redis| redis.del(fetches_since_gc_redis_key) }
   end
 
+  def set_syncs_since_gc!(value)
+    return false if !value.is_a?(Integer) || value < 0
+
+    Gitlab::Redis::SharedState.with { |redis| redis.set(fetches_since_gc_redis_key, value) }
+  end
+
   private
 
   def fetches_since_gc_redis_key
-    "projects/#{project.id}/fetches_since_gc"
+    "projects/#{project_id}/fetches_since_gc"
   end
 
   def never_synced_repository?

ee/lib/tasks/geo/git.rake

+namespace :geo do
+  namespace :git do
+    namespace :housekeeping do
+      desc "GitLab | Git | Housekeeping | Garbage Collection"
+      task gc: :gitlab_environment do
+        flag_for_housekeeping(Gitlab::CurrentSettings.housekeeping_gc_period)
+      end
+
+      desc "GitLab | Git | Housekeeping | Full Repack"
+      task full_repack: :gitlab_environment do
+        flag_for_housekeeping(Gitlab::CurrentSettings.housekeeping_full_repack_period)
+      end
+
+      desc "GitLab | Git | Housekeeping | Incremental Repack"
+      task incremental_repack: :gitlab_environment do
+        flag_for_housekeeping(Gitlab::CurrentSettings.housekeeping_incremental_repack_period)
+      end
+
+      def flag_for_housekeeping(period)
+        Geo::ProjectRegistry.select(:id, :project_id).find_in_batches do |batches|
+          batches.each do |registry|
+            registry.set_syncs_since_gc!(period - 1)
+          end
+        end
+      end
+    end
+  end
+end

ee/spec/tasks/geo/git_rake_spec.rb

+require 'rake_helper'
+
+describe 'geo:git:housekeeping' do
+  set(:project) { create(:project, :repository) }
+  set(:registry) { ::Geo::ProjectRegistry.find_or_create_by!(project: project) }
+
+  shared_examples 'housekeeping task' do |task_name, period_name|
+    it "sets existing projects syncs_gc count to #{period_name}-1" do
+      period = Gitlab::CurrentSettings.send(period_name)
+
+      expect { run_rake_task(task_name) }.to change { registry.syncs_since_gc }.to(period - 1)
+    end
+  end
+
+  before do
+    Rake.application.rake_require 'tasks/geo/git'
+  end
+
+  after do
+    registry.reset_syncs_since_gc!
+  end
+
+  describe 'geo:git:housekeeping:gc' do
+    it_behaves_like 'housekeeping task', 'geo:git:housekeeping:gc', :housekeeping_gc_period
+  end
+
+  describe 'geo:git:housekeeping:full_repack' do
+    it_behaves_like 'housekeeping task', 'geo:git:housekeeping:full_repack', :housekeeping_full_repack_period
+  end
+
+  describe 'geo:git:housekeeping:incremental_repack' do
+    it_behaves_like 'housekeeping task', 'geo:git:housekeeping:incremental_repack', :housekeeping_incremental_repack_period
+  end
+end