From 61b4baf73613a1860de513e6567fc4045e1ca209 Mon Sep 17 00:00:00 2001
From: Leonard Lyubich <leonard@nspcc.ru>
Date: Fri, 10 Sep 2021 16:39:50 +0300
Subject: [PATCH] [#778] services/object: Wrap last client's error into
 errIncompletePut

Make `errIncompletePut` to be a structure which wraps single client error.
Wrap error of the last client into `errIncompletePut` during placement
execution.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
---
 pkg/services/object/put/distributed.go | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/pkg/services/object/put/distributed.go b/pkg/services/object/put/distributed.go
index 20abae0c1d..45dd1a659c 100644
--- a/pkg/services/object/put/distributed.go
+++ b/pkg/services/object/put/distributed.go
@@ -32,7 +32,20 @@ type distributedTarget struct {
 	log *logger.Logger
 }
 
-var errIncompletePut = errors.New("incomplete object put")
+// errIncompletePut is returned if processing on a container fails.
+type errIncompletePut struct {
+	singleErr error // error from the last responding node
+}
+
+func (x errIncompletePut) Error() string {
+	const commonMsg = "incomplete object PUT by placement"
+
+	if x.singleErr != nil {
+		return fmt.Sprintf("%s: %v", commonMsg, x.singleErr)
+	}
+
+	return commonMsg
+}
 
 func (t *distributedTarget) WriteHeader(obj *object.RawObject) error {
 	t.obj = obj
@@ -132,11 +145,11 @@ loop:
 	}
 
 	if !traverser.Success() {
-		if err, ok := resErr.Load().(error); ok {
-			return nil, err
-		}
+		var err errIncompletePut
 
-		return nil, errIncompletePut
+		err.singleErr, _ = resErr.Load().(error)
+
+		return nil, err
 	}
 
 	return new(transformer.AccessIdentifiers).