func (s *OortValueStore) Lookup(ctx context.Context, req *valueproto.LookupRequest) (*valueproto.LookupResponse, error) {
	resp := valueproto.LookupResponse{Rpcid: req.Rpcid}
	var err error
	resp.TimestampMicro, resp.Length, err = s.vs.Lookup(ctx, req.KeyA, req.KeyB)
	if err != nil {
		resp.Err = proto.TranslateError(err)
	}
	return &resp, nil
}
func (s *OortValueStore) StreamLookup(stream valueproto.ValueStore_StreamLookupServer) error {
	var resp valueproto.LookupResponse
	for {
		req, err := stream.Recv()
		if err == io.EOF {
			return nil
		}
		if err != nil {
			return err
		}
		resp.Reset()
		resp.Rpcid = req.Rpcid
		resp.TimestampMicro, resp.Length, err = s.vs.Lookup(stream.Context(), req.KeyA, req.KeyB)
		if err != nil {
			resp.Err = proto.TranslateError(err)
		}
		if err := stream.Send(&resp); err != nil {
			return err
		}
	}
}