CompleteMultipartUpload and CreateObjectPart now fully support signature v4

pkg/donut/definitions.go

@@ -87,6 +87,24 @@ type PartMetadata struct {
 	Size         int64
 }
 
+// CompletePart - completed part container
+type CompletePart struct {
+	PartNumber int
+	ETag       string
+}
+
+// completedParts is a sortable interface for Part slice
+type completedParts []CompletePart
+
+func (a completedParts) Len() int           { return len(a) }
+func (a completedParts) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a completedParts) Less(i, j int) bool { return a[i].PartNumber < a[j].PartNumber }
+
+// CompleteMultipartUpload container for completing multipart upload
+type CompleteMultipartUpload struct {
+	Part []CompletePart
+}
+
 // ObjectResourcesMetadata - various types of object resources
 type ObjectResourcesMetadata struct {
 	Bucket               string