proto: Add Ref field in ReferencesLockedError

We can extract which reference caused an error. Add Ref field to
ReferencesLockedError so we can pass this information back to the
caller.

2 files changed, 60 insertions, 47 deletions

diff --git a/proto/errors.proto b/proto/errors.proto
index 4a600adc5..dbead8f0e 100644
--- a/proto/errors.proto
+++ b/proto/errors.proto
@@ -56,6 +56,8 @@ message MergeConflictError {
 // ReferencesLockedError is an error returned when an ref update fails because
 // the references have already been locked by another process.
 message ReferencesLockedError {
+  // Refs are the references that could not be locked.
+  repeated bytes refs = 1;
 }
 
 // ReferenceExistsError is an error returned when a reference that ought not to exist does exist
diff --git a/proto/go/gitalypb/errors.pb.go b/proto/go/gitalypb/errors.pb.go
index 1b2c2d7f8..af8b3b04d 100644
--- a/proto/go/gitalypb/errors.pb.go
+++ b/proto/go/gitalypb/errors.pb.go
@@ -381,6 +381,9 @@ type ReferencesLockedError struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
+
+	// Refs are the references that could not be locked.
+	Refs [][]byte `protobuf:"bytes,1,rep,name=refs,proto3" json:"refs,omitempty"`
 }
 
 func (x *ReferencesLockedError) Reset() {
@@ -415,6 +418,13 @@ func (*ReferencesLockedError) Descriptor() ([]byte, []int) {
 	return file_errors_proto_rawDescGZIP(), []int{5}
 }
 
+func (x *ReferencesLockedError) GetRefs() [][]byte {
+	if x != nil {
+		return x.Refs
+	}
+	return nil
+}
+
 // ReferenceExistsError is an error returned when a reference that ought not to exist does exist
 // already.
 type ReferenceExistsError struct {
@@ -801,54 +811,55 @@ var file_errors_proto_rawDesc = []byte{
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 var (