Defer project destroys within a namespace in Groups::DestroyService#async_execute

Group#destroy would actually hard-delete all associated projects even
though the acts_as_paranoia gem is used, preventing Projects::DestroyService
from doing any work.

We first noticed this while trying to log all projects deletion to the Geo
log.

2 files changed, 7 insertions, 2 deletions

diff --git a/app/models/namespace.rb b/app/models/namespace.rb
index 743e0513e02..672eab94c07 100644
--- a/app/models/namespace.rb
+++ b/app/models/namespace.rb
@@ -219,6 +219,12 @@ class Namespace < ActiveRecord::Base
     parent.present?
   end
 
+  def soft_delete_without_removing_associations
+    # We can't use paranoia's `#destroy` since this will hard-delete projects.
+    # Project uses `pending_delete` instead of the acts_as_paranoia gem.
+    self.deleted_at = Time.now
+  end
+
   private
 
   def repository_storage_paths
diff --git a/app/services/groups/destroy_service.rb b/app/services/groups/destroy_service.rb
index d40d280140a..80c51cb5a72 100644
--- a/app/services/groups/destroy_service.rb
+++ b/app/services/groups/destroy_service.rb
@@ -1,8 +1,7 @@
 module Groups
   class DestroyService < Groups::BaseService
     def async_execute
-      # Soft delete via paranoia gem
-      group.destroy
+      group.soft_delete_without_removing_associations
       job_id = GroupDestroyWorker.perform_async(group.id, current_user.id)
       Rails.logger.info("User #{current_user.id} scheduled a deletion of group ID #{group.id} with job ID #{job_id}")
     end