[#450] Fix aws-chunked header workflow

Signed-off-by: Pavel Pogodaev <p.pogodaev@yadro.com>

api/handler/multipart_upload.go

@@ -203,10 +203,7 @@ func (h *handler) UploadPartHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	var size uint64
+	size := h.getPutPayloadSize(r)
-	if r.ContentLength > 0 {
-		size = uint64(r.ContentLength)
-	}
 
 	p := &layer.UploadPartParams{
 		Info: &layer.UploadInfoParams{

api/handler/put.go

@@ -241,10 +241,7 @@ func (h *handler) PutObjectHandler(w http.ResponseWriter, r *http.Request) {
 		metadata[api.ContentEncoding] = encodings
 	}
 
-	var size uint64
+	size := h.getPutPayloadSize(r)
-	if r.ContentLength > 0 {
-		size = uint64(r.ContentLength)
-	}
 
 	params := &layer.PutObjectParams{
 		BktInfo:           bktInfo,

api/handler/util.go

@@ -106,6 +106,23 @@ func (h *handler) getBucketAndCheckOwner(r *http.Request, bucket string, header
 	return bktInfo, checkOwner(bktInfo, expected)
 }
 
+func (h *handler) getPutPayloadSize(r *http.Request) uint64 {
+	decodeContentSize := r.Header.Get(api.AmzDecodedContentLength)
+	decodedSize, err := strconv.Atoi(decodeContentSize)
+	if err != nil {
+		decodedSize = 0
+	}
+
+	var size uint64
+	if decodedSize > 0 {
+		size = uint64(decodedSize)
+	} else if r.ContentLength > 0 {
+		size = uint64(r.ContentLength)
+	}
+
+	return size
+}
+
 func parseRange(s string) (*layer.RangeParams, error) {
 	if s == "" {
 		return nil, nil