[#58] object/put: Validate payload content after filling

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/services/object/put/distributed.go

@@ -21,6 +21,8 @@ type distributedTarget struct {
 	chunks [][]byte
 
 	nodeTargetInitializer func(*network.Address) transformer.ObjectTarget
+
+	fmt *object.FormatValidator
 }
 
 var errIncompletePut = errors.New("incomplete object put")
@@ -57,6 +59,10 @@ func (t *distributedTarget) Close() (*transformer.AccessIdentifiers, error) {
 		payload = append(payload, t.chunks[i]...)
 	}
 
+	if err := t.fmt.ValidateContent(t.obj.GetType(), payload); err != nil {
+		return nil, errors.Wrapf(err, "(%T) could not validate payload content", t)
+	}
+
 	t.obj.SetPayload(payload)
 
 loop: