Do not export certain models when using Relations Export API

Changelog: added

app/models/bulk_imports/file_transfer/base_config.rb

@@ -30,7 +30,7 @@ module BulkImports
       end
 
       def portable_relations
-        import_export_config.dig(:tree, portable_class_sym).keys.map(&:to_s)
+        import_export_config.dig(:tree, portable_class_sym).keys.map(&:to_s) - skipped_relations
       end
 
       private
@@ -66,6 +66,10 @@ module BulkImports
       def base_export_path
         raise NotImplementedError
       end
+
+      def skipped_relations
+        []
+      end
     end
   end
 end

app/models/bulk_imports/file_transfer/group_config.rb

@@ -10,6 +10,10 @@ module BulkImports
       def import_export_yaml
         ::Gitlab::ImportExport.group_config_file
       end
+
+      def skipped_relations
+        @skipped_relations ||= %w(members)
+      end
     end
   end
 end

app/models/bulk_imports/file_transfer/project_config.rb

@@ -10,6 +10,10 @@ module BulkImports
       def import_export_yaml
         ::Gitlab::ImportExport.config_file
       end
+
+      def skipped_relations
+        @skipped_relations ||= %w(project_members group_members)
+      end
     end
   end
 end

spec/models/bulk_imports/file_transfer/group_config_spec.rb

@@ -34,6 +34,10 @@ RSpec.describe BulkImports::FileTransfer::GroupConfig do
     it 'returns a list of top level exportable relations' do
       expect(subject.portable_relations).to include('milestones', 'badges', 'boards', 'labels')
     end
+
+    it 'does not include skipped relations' do
+      expect(subject.portable_relations).not_to include('members')
+    end
   end
 
   describe '#top_relation_tree' do

spec/models/bulk_imports/file_transfer/project_config_spec.rb

@@ -34,6 +34,10 @@ RSpec.describe BulkImports::FileTransfer::ProjectConfig do
     it 'returns a list of top level exportable relations' do
       expect(subject.portable_relations).to include('issues', 'labels', 'milestones', 'merge_requests')
     end
+
+    it 'does not include skipped relations' do
+      expect(subject.portable_relations).not_to include('project_members', 'group_members')
+    end
   end
 
   describe '#top_relation_tree' do