object/convert.go

@@ -269,6 +269,8 @@ func (h *ECHeader) ToGRPCMessage() grpc.Message {
 		m = new(object.Header_EC)
 
 		m.Parent = h.Parent.ToGRPCMessage().(*refsGRPC.ObjectID)
+		m.ParentSplitId = h.ParentSplitID
+		m.ParentSplitIndex = h.ParentSplitIndex
 		m.Index = h.Index
 		m.Total = h.Total
 		m.Header = h.Header
@@ -300,6 +302,8 @@ func (h *ECHeader) FromGRPCMessage(m grpc.Message) error {
 		}
 	}
 
+	h.ParentSplitID = v.GetParentSplitId()
+	h.ParentSplitIndex = v.GetParentSplitIndex()
 	h.Index = v.GetIndex()
 	h.Total = v.GetTotal()
 	h.Header = v.GetHeader()

object/marshal.go

@@ -31,6 +31,8 @@ const (
 	ecHdrTotalField        = 3
 	ecHdrHeaderLengthField = 4
 	ecHdrHeaderField       = 5
+	ecHdrParentSplitID     = 6
+	ecHdrParentSplitIndex  = 7
 
 	hdrVersionField         = 1
 	hdrContainerIDField     = 2
@@ -260,7 +262,9 @@ func (h *ECHeader) StableMarshal(buf []byte) []byte {
 	offset += proto.UInt32Marshal(ecHdrIndexField, buf[offset:], h.Index)
 	offset += proto.UInt32Marshal(ecHdrTotalField, buf[offset:], h.Total)
 	offset += proto.UInt32Marshal(ecHdrHeaderLengthField, buf[offset:], h.HeaderLength)
-	proto.BytesMarshal(ecHdrHeaderField, buf[offset:], h.Header)
+	offset += proto.BytesMarshal(ecHdrHeaderField, buf[offset:], h.Header)
+	offset += proto.BytesMarshal(ecHdrParentSplitID, buf[offset:], h.ParentSplitID)
+	proto.UInt32Marshal(ecHdrParentSplitIndex, buf[offset:], h.ParentSplitIndex)
 	return buf
 }
 
@@ -274,6 +278,8 @@ func (h *ECHeader) StableSize() (size int) {
 	size += proto.UInt32Size(ecHdrTotalField, h.Total)
 	size += proto.UInt32Size(ecHdrHeaderLengthField, h.HeaderLength)
 	size += proto.BytesSize(ecHdrHeaderField, h.Header)
+	size += proto.BytesSize(ecHdrParentSplitID, h.ParentSplitID)
+	size += proto.UInt32Size(ecHdrParentSplitIndex, h.ParentSplitIndex)
 
 	return size
 }

object/message_test.go

@@ -13,7 +13,9 @@ func TestMessageConvert(t *testing.T) {
 		func(empty bool) message.Message { return objecttest.GenerateShortHeader(empty) },
 		func(empty bool) message.Message { return objecttest.GenerateAttribute(empty) },
 		func(empty bool) message.Message { return objecttest.GenerateSplitHeader(empty) },
-		func(empty bool) message.Message { return objecttest.GenerateHeader(empty) },
+		func(empty bool) message.Message { return objecttest.GenerateHeaderWithSplitHeader(empty) },
+		func(empty bool) message.Message { return objecttest.GenerateHeaderWithECHeader(empty) },
+		func(empty bool) message.Message { return objecttest.GenerateECHeader(empty) },
 		func(empty bool) message.Message { return objecttest.GenerateObject(empty) },
 		func(empty bool) message.Message { return objecttest.GenerateSplitInfo(empty) },
 		func(empty bool) message.Message { return objecttest.GenerateECInfo(empty) },

object/test/generate.go

@@ -68,17 +68,41 @@ func generateSplitHeader(empty, withPar bool) *object.SplitHeader {
 	m.SetParentSignature(refstest.GenerateSignature(empty))
 
 	if withPar {
-		m.SetParentHeader(generateHeader(empty, false))
+		m.SetParentHeader(GenerateHeaderWithSplitHeader(empty))
 	}
 
 	return m
 }
 
-func GenerateHeader(empty bool) *object.Header {
-	return generateHeader(empty, true)
+func GenerateHeaderWithSplitHeader(empty bool) *object.Header {
+	m := generateHeader(empty)
+	m.SetSplit(generateSplitHeader(empty, false))
+	return m
 }
 
-func generateHeader(empty, withSplit bool) *object.Header {
+func GenerateHeaderWithECHeader(empty bool) *object.Header {
+	m := generateHeader(empty)
+	m.SetEC(GenerateECHeader(empty))
+	return m
+}
+
+func GenerateECHeader(empty bool) *object.ECHeader {
+	ech := new(object.ECHeader)
+
+	if !empty {
+		ech.Parent = refstest.GenerateObjectID(empty)
+		ech.ParentSplitID = []byte{1, 2, 3}
+		ech.ParentSplitIndex = 1
+		ech.Index = 0
+		ech.Total = 2
+		ech.Header = []byte("chunk of ec-encoded parent header")
+		ech.HeaderLength = uint32(2 * len(ech.Header))
+	}
+
+	return ech
+}
+
+func generateHeader(empty bool) *object.Header {
 	m := new(object.Header)
 
 	if !empty {
@@ -95,10 +119,6 @@ func generateHeader(empty, withSplit bool) *object.Header {
 	m.SetHomomorphicHash(refstest.GenerateChecksum(empty))
 	m.SetSessionToken(sessiontest.GenerateSessionToken(empty))
 
-	if withSplit {
-		m.SetSplit(generateSplitHeader(empty, false))
-	}
-
 	return m
 }
 
@@ -106,7 +126,7 @@ func GenerateHeaderWithSignature(empty bool) *object.HeaderWithSignature {
 	m := new(object.HeaderWithSignature)
 
 	m.SetSignature(refstest.GenerateSignature(empty))
-	m.SetHeader(GenerateHeader(empty))
+	m.SetHeader(GenerateHeaderWithSplitHeader(empty))
 
 	return m
 }
@@ -120,7 +140,7 @@ func GenerateObject(empty bool) *object.Object {
 	}
 
 	m.SetSignature(refstest.GenerateSignature(empty))
-	m.SetHeader(GenerateHeader(empty))
+	m.SetHeader(GenerateHeaderWithSplitHeader(empty))
 
 	return m
 }
@@ -194,7 +214,7 @@ func GenerateGetObjectPartInit(empty bool) *object.GetObjectPartInit {
 	}
 
 	m.SetSignature(refstest.GenerateSignature(empty))
-	m.SetHeader(GenerateHeader(empty))
+	m.SetHeader(GenerateHeaderWithSplitHeader(empty))
 
 	return m
 }
@@ -248,7 +268,7 @@ func GeneratePutObjectPartInit(empty bool) *object.PutObjectPartInit {
 	}
 
 	m.SetSignature(refstest.GenerateSignature(empty))
-	m.SetHeader(GenerateHeader(empty))
+	m.SetHeader(GenerateHeaderWithSplitHeader(empty))
 
 	return m
 }

object/types.go

@@ -41,6 +41,8 @@ type SplitHeader struct {
 
 type ECHeader struct {
 	Parent           *refs.ObjectID
+	ParentSplitID    []byte
+	ParentSplitIndex uint32
 	Index            uint32
 	Total            uint32
 	Header           []byte