[#1753] services/tree: Add parent ID to the GetNodeByPath response

Currently, you need to use `GetSubTree` to get parent, which seems an
overkill.

Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>

pkg/services/tree/service.go

@@ -308,12 +308,13 @@ func (s *Service) GetNodeByPath(ctx context.Context, req *GetNodeByPathRequest)
 
 	info := make([]*GetNodeByPathResponse_Info, 0, len(nodes))
 	for _, node := range nodes {
-		m, _, err := s.forest.TreeGetMeta(cid, b.GetTreeId(), node)
+		m, parent, err := s.forest.TreeGetMeta(cid, b.GetTreeId(), node)
 		if err != nil {
 			return nil, err
 		}
 
 		var x GetNodeByPathResponse_Info
+		x.ParentId = parent
 		x.NodeId = node
 		x.Timestamp = m.Time
 		if b.AllAttributes {

pkg/services/tree/service.proto

@@ -202,6 +202,8 @@ message GetNodeByPathResponse {
     uint64 timestamp = 2;
     // Node meta-information.
     repeated KeyValue meta = 3;
+    // Parent ID.
+    uint64 parent_id = 4;
   }
   message Body {
     // List of nodes stored by path.