Geo: sync .gitattributes to info/attributes in secondary nodes

changelogs/unreleased-ee/4101-sync-gitattributes-geo.yml

+---
+title: 'Geo: sync .gitattributes to info/attributes in secondary nodes'
+merge_request: 4159
+author:
+type: changed

ee/app/services/geo/repository_sync_service.rb

@@ -22,6 +22,8 @@ module Geo
         fetch_geo_mirror(project.repository)
       end
 
+      update_gitattributes
+
       update_registry!(finished_at: DateTime.now, attrs: { last_repository_sync_failure: nil })
       log_info('Finished repository sync',
                update_delay_s: update_delay_in_seconds,
@@ -52,6 +54,13 @@ module Geo
       project.repository
     end
 
+    # Update info/attributes file using the contents of .gitattributes file from the default branch
+    def update_gitattributes
+      return if project.default_branch.nil?
+
+      repository.copy_gitattributes(project.default_branch)
+    end
+
     def retry_count
       registry.public_send("#{type}_retry_count") || -1 # rubocop:disable GitlabSecurity/PublicSend
     end

spec/ee/spec/services/geo/repository_sync_service_spec.rb

@@ -145,6 +145,16 @@ describe Geo::RepositorySyncService do
           expect(registry.reload.repository_retry_count).to be_nil
           expect(registry.repository_retry_at).to be_nil
         end
+
+        context 'with non empty repositories' do
+          let(:project) { create(:project, :repository) }
+
+          it 'syncs gitattributes to info/attributes' do
+            expect(repository).to receive(:copy_gitattributes)
+
+            subject.execute
+          end
+        end
       end
 
       context 'when repository sync fail' do