Includes logic to persist namespace statistics

- Add two new ActiveRecord models:
  - RootNamespaceStoragestatistics will persist root namespace statistics
  - NamespaceAggregationSchedule will save information when a new update
to the namespace statistics needs to be scheduled
- Inject into UpdateProjectStatistics concern a new callback that will
call an async job to insert a new row onto NamespaceAggregationSchedule
table
- When a new row is inserted a new job is scheduled. This job will
update call an specific service to update the statistics and after that
it will delete thee aggregated scheduled row
- The RefresherServices makes heavy use of arel to build composable
queries to update Namespace::RootStorageStatistics attributes.
- Add an extra worker to traverse pending rows on
NAmespace::AggregationSchedule table and schedule a worker for each one
of this rows.
- Add an extra worker to traverse pending rows on
NAmespace::AggregationSchedule table and schedule a worker for each one
of this rows

1 files changed, 3 insertions, 0 deletions

diff --git a/config/initializers/1_settings.rb b/config/initializers/1_settings.rb
index c803e4615b4..bf187e9a282 100644
--- a/config/initializers/1_settings.rb
+++ b/config/initializers/1_settings.rb
@@ -441,6 +441,9 @@ Settings.cron_jobs['prune_web_hook_logs_worker']['job_class'] = 'PruneWebHookLog
 Settings.cron_jobs['schedule_migrate_external_diffs_worker'] ||= Settingslogic.new({})
 Settings.cron_jobs['schedule_migrate_external_diffs_worker']['cron'] ||= '15 * * * *'
 Settings.cron_jobs['schedule_migrate_external_diffs_worker']['job_class'] = 'ScheduleMigrateExternalDiffsWorker'
+Settings.cron_jobs['namespaces_prune_aggregation_schedules_worker'] ||= Settingslogic.new({})
+Settings.cron_jobs['namespaces_prune_aggregation_schedules_worker']['cron'] ||= '5 1 * * *'
+Settings.cron_jobs['namespaces_prune_aggregation_schedules_worker']['job_class'] = 'Namespaces::PruneAggregationSchedulesWorker'
 
 Gitlab.ee do
   Settings.cron_jobs['clear_shared_runners_minutes_worker'] ||= Settingslogic.new({})