Add config options for partial clone

changelogs/unreleased/jc-add-config-options-for-partial-clone.yml

+---
+title: Add allowFilter and allowAnySHA1InWant for partial clones
+merge_request: 16850
+author:
+type: added

lib/api/internal/base.rb

@@ -78,6 +78,10 @@ module API
             receive_max_input_size = Gitlab::CurrentSettings.receive_max_input_size.to_i
             if receive_max_input_size > 0
               payload[:git_config_options] << "receive.maxInputSize=#{receive_max_input_size.megabytes}"
+
+              if Feature.enabled?(:gitaly_upload_pack_filter, project)
+                payload[:git_config_options] << "uploadpack.allowFilter=true" << "uploadpack.allowAnySHA1InWant=true"
+              end
             end
 
             response_with_status(**payload)

spec/requests/api/internal/base_spec.rb

@@ -403,12 +403,30 @@ describe API::Internal::Base do
         end
 
         context 'when receive_max_input_size has been updated' do
-          it 'returns custom git config' do
+          before do
             allow(Gitlab::CurrentSettings).to receive(:receive_max_input_size) { 1 }
+          end
 
+          it 'returns custom git config' do
             push(key, project)
 
             expect(json_response["git_config_options"]).to be_present
+            expect(json_response["git_config_options"]).to include("uploadpack.allowFilter=true")
+            expect(json_response["git_config_options"]).to include("uploadpack.allowAnySHA1InWant=true")
+          end
+
+          context 'when gitaly_upload_pack_filter feature flag is disabled' do
+            before do
+              stub_feature_flags(gitaly_upload_pack_filter: { enabled: false, thing: project })
+            end
+
+            it 'does not include allowFilter and allowAnySha1InWant in the git config options' do
+              push(key, project)
+
+              expect(json_response["git_config_options"]).to be_present
+              expect(json_response["git_config_options"]).not_to include("uploadpack.allowFilter=true")
+              expect(json_response["git_config_options"]).not_to include("uploadpack.allowAnySHA1InWant=true")
+            end
           end
         end