[#235] services/object: Implement new GetRange algorithm

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

cmd/neofs-node/object.go

@@ -28,8 +28,6 @@ import (
 	headsvcV2 "github.com/nspcc-dev/neofs-node/pkg/services/object/head/v2"
 	putsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/put"
 	putsvcV2 "github.com/nspcc-dev/neofs-node/pkg/services/object/put/v2"
-	rangesvc "github.com/nspcc-dev/neofs-node/pkg/services/object/range"
-	rangesvcV2 "github.com/nspcc-dev/neofs-node/pkg/services/object/range/v2"
 	rangehashsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/rangehash"
 	rangehashsvcV2 "github.com/nspcc-dev/neofs-node/pkg/services/object/rangehash/v2"
 	searchsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/search"
@@ -52,8 +50,6 @@ type objectSvc struct {
 
 	get *getsvcV2.Service
 
-	rng *rangesvcV2.Service
-
 	rngHash *rangehashsvcV2.Service
 
 	delete *deletesvcV2.Service
@@ -163,8 +159,8 @@ func (s *objectSvc) Delete(ctx context.Context, req *object.DeleteRequest) (*obj
 	return s.delete.Delete(ctx, req)
 }
 
-func (s *objectSvc) GetRange(ctx context.Context, req *object.GetRangeRequest) (object.GetRangeObjectStreamer, error) {
+func (s *objectSvc) GetRange(req *object.GetRangeRequest, stream objectService.GetObjectRangeStream) error {
-	return s.rng.GetRange(ctx, req)
+	return s.get.GetRange(req, stream)
 }
 
 func (s *objectSvc) GetRangeHash(ctx context.Context, req *object.GetRangeHashRequest) (*object.GetRangeHashResponse, error) {
@@ -354,25 +350,6 @@ func initObjectService(c *cfg) {
 		headsvcV2.WithInternalService(sHead),
 	)
 
-	sRange := rangesvc.NewService(
-		rangesvc.WithKeyStorage(keyStorage),
-		rangesvc.WithClientCache(clientCache),
-		rangesvc.WithLocalStorage(ls),
-		rangesvc.WithContainerSource(c.cfgObject.cnrStorage),
-		rangesvc.WithNetworkMapSource(c.cfgObject.netMapStorage),
-		rangesvc.WithLocalAddressSource(c),
-		rangesvc.WithWorkerPool(c.cfgObject.pool.rng),
-		rangesvc.WithHeadService(sHead),
-		rangesvc.WithLogger(c.log),
-		rangesvc.WithClientOptions(
-			client.WithDialTimeout(c.viper.GetDuration(cfgObjectRangeDialTimeout)),
-		),
-	)
-
-	sRangeV2 := rangesvcV2.NewService(
-		rangesvcV2.WithInternalService(sRange),
-	)
-
 	sGet := getsvc.New(
 		getsvc.WithLogger(c.log),
 		getsvc.WithLocalStorageEngine(ls),
@@ -401,7 +378,7 @@ func initObjectService(c *cfg) {
 		rangehashsvc.WithNetworkMapSource(c.cfgObject.netMapStorage),
 		rangehashsvc.WithLocalAddressSource(c),
 		rangehashsvc.WithHeadService(sHead),
-		rangehashsvc.WithRangeService(sRange),
+		rangehashsvc.WithRangeService(sGet),
 		rangehashsvc.WithWorkerPool(c.cfgObject.pool.rngHash),
 		rangehashsvc.WithLogger(c.log),
 		rangehashsvc.WithClientOptions(
@@ -451,7 +428,6 @@ func initObjectService(c *cfg) {
 									put:     sPutV2,
 									search:  sSearchV2,
 									head:    sHeadV2,
-									rng:     sRangeV2,
 									get:     sGetV2,
 									rngHash: sRangeHashV2,
 									delete:  sDeleteV2,

go.mod

@@ -17,7 +17,7 @@ require (
 	github.com/multiformats/go-multihash v0.0.13 // indirect
 	github.com/nspcc-dev/hrw v1.0.9
 	github.com/nspcc-dev/neo-go v0.91.1-pre.0.20201030072836-71216865717b
-	github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201203150742-6db6b569e098
+	github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201208072327-139660c6ff59
 	github.com/nspcc-dev/neofs-crypto v0.3.0
 	github.com/nspcc-dev/tzhash v1.4.0
 	github.com/panjf2000/ants/v2 v2.3.0

go.sum

@@ -283,8 +283,8 @@ github.com/nspcc-dev/neo-go v0.73.1-pre.0.20200303142215-f5a1b928ce09/go.mod h1:
 github.com/nspcc-dev/neo-go v0.91.0/go.mod h1:G6HdOWvzQ6tlvFdvFSN/PgCzLPN/X/X4d5hTjFRUDcc=
 github.com/nspcc-dev/neo-go v0.91.1-pre.0.20201030072836-71216865717b h1:gk5bZgpWOehaDVKI5vBDkcjXTpRkKqcvIb1h/vHnBH4=
 github.com/nspcc-dev/neo-go v0.91.1-pre.0.20201030072836-71216865717b/go.mod h1:9s7LNp2lMgf0caH2t0sam4+WT2SIauXozwP0AdBqnEo=
-github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201203150742-6db6b569e098 h1:lq17L0qNacW4cdJ4SqcnTmei2g/wg+36nkobznI7YAo=
+github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201208072327-139660c6ff59 h1:OfeINXdkMrlfdqsVK5ECYi7vgt9TpO/R3JMQcnQndXI=
-github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201203150742-6db6b569e098/go.mod h1:G7dqincfdjBrAbL5nxVp82emF05fSVEqe59ICsoRDI8=
+github.com/nspcc-dev/neofs-api-go v1.20.3-0.20201208072327-139660c6ff59/go.mod h1:G7dqincfdjBrAbL5nxVp82emF05fSVEqe59ICsoRDI8=
 github.com/nspcc-dev/neofs-crypto v0.2.0/go.mod h1:F/96fUzPM3wR+UGsPi3faVNmFlA9KAEAUQR7dMxZmNA=
 github.com/nspcc-dev/neofs-crypto v0.2.3/go.mod h1:8w16GEJbH6791ktVqHN9YRNH3s9BEEKYxGhlFnp0cDw=
 github.com/nspcc-dev/neofs-crypto v0.3.0 h1:zlr3pgoxuzrmGCxc5W8dGVfA9Rro8diFvVnBg0L4ifM=

pkg/local_object_storage/engine/head.go

@@ -53,7 +53,8 @@ func (r *HeadRes) Header() *object.Object {
 // Returns any error encountered that
 // did not allow to completely read the object header.
 //
-// Returns ErrNotFound if requested object is missing in local storage.
+// Returns object.ErrNotFound if requested object is missing in local storage.
+// Returns object.ErrAlreadyRemoved if requested object was inhumed.
 func (e *StorageEngine) Head(prm *HeadPrm) (*HeadRes, error) {
 	var (
 		head  *object.Object

pkg/local_object_storage/engine/range.go

@@ -36,9 +36,9 @@ func (p *RngPrm) WithAddress(addr *objectSDK.Address) *RngPrm {
 //
 // Missing an option or calling with zero length is equivalent
 // to getting the full payload range.
-func (p *RngPrm) WithPayloadRange(off, ln uint64) *RngPrm {
+func (p *RngPrm) WithPayloadRange(rng *objectSDK.Range) *RngPrm {
 	if p != nil {
-		p.off, p.ln = off, ln
+		p.off, p.ln = rng.GetOffset(), rng.GetLength()
 	}
 
 	return p
@@ -111,7 +111,7 @@ func (e *StorageEngine) GetRange(prm *RngPrm) (*RngRes, error) {
 func GetRange(storage *StorageEngine, addr *objectSDK.Address, rng *objectSDK.Range) ([]byte, error) {
 	res, err := storage.GetRange(new(RngPrm).
 		WithAddress(addr).
-		WithPayloadRange(rng.GetOffset(), rng.GetLength()),
+		WithPayloadRange(rng),
 	)
 	if err != nil {
 		return nil, err

pkg/network/transport/object/grpc/range.go

@@ -0,0 +1,28 @@
+package object
+
+import (
+	"github.com/nspcc-dev/neofs-api-go/v2/object"
+	objectGRPC "github.com/nspcc-dev/neofs-api-go/v2/object/grpc"
+)
+
+type getRangeStreamerV2 struct {
+	objectGRPC.ObjectService_GetRangeServer
+}
+
+func (s *getRangeStreamerV2) Send(resp *object.GetRangeResponse) error {
+	return s.ObjectService_GetRangeServer.Send(
+		object.GetRangeResponseToGRPCMessage(resp),
+	)
+}
+
+// GetRange converts gRPC GetRangeRequest message and server-side stream and overtakes its data
+// to gRPC stream.
+func (s *Server) GetRange(req *objectGRPC.GetRangeRequest, gStream objectGRPC.ObjectService_GetRangeServer) error {
+	// TODO: think about how we transport errors through gRPC
+	return s.srv.GetRange(
+		object.GetRangeRequestFromGRPCMessage(req),
+		&getRangeStreamerV2{
+			ObjectService_GetRangeServer: gStream,
+		},
+	)
+}

pkg/network/transport/object/grpc/service.go

@@ -99,31 +99,6 @@ func (s *Server) Search(req *objectGRPC.SearchRequest, gStream objectGRPC.Object
 	}
 }
 
-// GetRange converts gRPC GetRangeRequest message, opens internal Object service Search stream and overtakes its data
-// to gRPC stream.
-func (s *Server) GetRange(req *objectGRPC.GetRangeRequest, gStream objectGRPC.ObjectService_GetRangeServer) error {
-	stream, err := s.srv.GetRange(gStream.Context(), object.GetRangeRequestFromGRPCMessage(req))
-	if err != nil {
-		// TODO: think about how we transport errors through gRPC
-		return err
-	}
-
-	for {
-		r, err := stream.Recv()
-		if err != nil {
-			if errors.Is(errors.Cause(err), io.EOF) {
-				return nil
-			}
-
-			return err
-		}
-
-		if err := gStream.Send(object.GetRangeResponseToGRPCMessage(r)); err != nil {
-			return err
-		}
-	}
-}
-
 // GetRangeHash converts gRPC GetRangeHashRequest message and passes it to internal Object service.
 func (s *Server) GetRangeHash(ctx context.Context, req *objectGRPC.GetRangeHashRequest) (*objectGRPC.GetRangeHashResponse, error) {
 	resp, err := s.srv.GetRangeHash(ctx, object.GetRangeHashRequestFromGRPCMessage(req))

pkg/services/object/acl/acl.go

@@ -45,6 +45,14 @@ type (
 		*eACLCfg
 	}
 
+	rangeStreamBasicChecker struct {
+		objectSvc.GetObjectRangeStream
+
+		info requestInfo
+
+		*eACLCfg
+	}
+
 	searchStreamBasicChecker struct {
 		object.SearchObjectStreamer
 	}
@@ -262,13 +270,10 @@ func (b Service) Delete(
 	return b.next.Delete(ctx, request)
 }
 
-func (b Service) GetRange(
+func (b Service) GetRange(request *object.GetRangeRequest, stream objectSvc.GetObjectRangeStream) error {
-	ctx context.Context,
-	request *object.GetRangeRequest) (object.GetRangeObjectStreamer, error) {
-
 	cid, err := getContainerIDFromRequest(request)
 	if err != nil {
-		return nil, err
+		return err
 	}
 
 	req := metaWithToken{
@@ -279,17 +284,20 @@ func (b Service) GetRange(
 
 	reqInfo, err := b.findRequestInfo(req, cid, acl.OperationRange)
 	if err != nil {
-		return nil, err
+		return err
 	}
 
 	if !basicACLCheck(reqInfo) {
-		return nil, basicACLErr(reqInfo)
+		return basicACLErr(reqInfo)
 	} else if !eACLCheck(request, reqInfo, b.eACLCfg) {
-		return nil, eACLErr(reqInfo)
+		return eACLErr(reqInfo)
 	}
 
-	stream, err := b.next.GetRange(ctx, request)
+	return b.next.GetRange(request, &rangeStreamBasicChecker{
-	return getRangeStreamBasicChecker{stream}, err
+		GetObjectRangeStream: stream,
+		info:                 reqInfo,
+		eACLCfg:              b.eACLCfg,
+	})
 }
 
 func (b Service) GetRangeHash(
@@ -374,6 +382,14 @@ func (g *getStreamBasicChecker) Send(resp *object.GetResponse) error {
 	return g.GetObjectStream.Send(resp)
 }
 
+func (g *rangeStreamBasicChecker) Send(resp *object.GetRangeResponse) error {
+	if !eACLCheck(resp, g.info, g.eACLCfg) {
+		return eACLErr(g.info)
+	}
+
+	return g.GetObjectRangeStream.Send(resp)
+}
+
 func (b Service) findRequestInfo(
 	req metaWithToken,
 	cid *container.ID,

pkg/services/object/acl/eacl/v2/headers.go

@@ -119,17 +119,16 @@ func (h *headerSource) objectHeaders() ([]eacl.Header, bool) {
 			var hdr *objectV2.Header
 
 			switch v := resp.GetBody().GetHeaderPart().(type) {
-			case *objectV2.GetHeaderPartShort:
+			case *objectV2.ShortHeader:
 				hdr = new(objectV2.Header)
-				h := v.GetShortHeader()
 
-				hdr.SetVersion(h.GetVersion())
+				hdr.SetVersion(v.GetVersion())
-				hdr.SetCreationEpoch(h.GetCreationEpoch())
+				hdr.SetCreationEpoch(v.GetCreationEpoch())
-				hdr.SetOwnerID(h.GetOwnerID())
+				hdr.SetOwnerID(v.GetOwnerID())
-				hdr.SetObjectType(h.GetObjectType())
+				hdr.SetObjectType(v.GetObjectType())
-				hdr.SetPayloadLength(h.GetPayloadLength())
+				hdr.SetPayloadLength(v.GetPayloadLength())
-			case *objectV2.GetHeaderPartFull:
+			case *objectV2.HeaderWithSignature:
-				hdr = v.GetHeaderWithSignature().GetHeader()
+				hdr = v.GetHeader()
 			}
 
 			oV2.SetHeader(hdr)

pkg/services/object/get/assemble.go

@@ -24,8 +24,19 @@ func (exec *execCtx) assemble() {
 	prev, children := exec.initFromChild(childID)
 
 	if len(children) > 0 {
+		if exec.ctxRange() == nil {
 			if ok := exec.writeCollectedHeader(); ok {
-			exec.overtakePayloadDirectly(children)
+				exec.overtakePayloadDirectly(children, nil)
+			}
+		} else {
+			// TODO: choose one-by-one restoring algorithm according to size
+			//  * if size > MAX => go right-to-left with HEAD and back with GET
+			//  * else go right-to-left with GET and compose in single object before writing
+
+			if ok := exec.overtakePayloadInReverse(children[len(children)-1]); ok {
+				// payload of all children except the last are written, write last payload
+				exec.writeObjectPayload(exec.collectedObject)
+			}
 		}
 	} else if prev != nil {
 		if ok := exec.writeCollectedHeader(); ok {
@@ -39,9 +50,6 @@ func (exec *execCtx) assemble() {
 			}
 		}
 	} else {
-		exec.status = statusUndefined
-		exec.err = object.ErrNotFound
-
 		exec.log.Debug("could not init parent from child")
 	}
 }
@@ -51,8 +59,9 @@ func (exec *execCtx) initFromChild(id *objectSDK.ID) (prev *objectSDK.ID, childr
 
 	log.Debug("starting assembling from child")
 
-	child, ok := exec.getChild(id)
+	child, ok := exec.getChild(id, nil)
 	if !ok {
+
 		return
 	}
 
@@ -75,14 +84,48 @@ func (exec *execCtx) initFromChild(id *objectSDK.ID) (prev *objectSDK.ID, childr
 	}
 
 	exec.collectedObject = par
-	object.NewRawFromObject(exec.collectedObject).SetPayload(child.Payload())
+
+	var payload []byte
+
+	if rng := exec.ctxRange(); rng != nil {
+		seekLen := rng.GetLength()
+		seekOff := rng.GetOffset()
+		parSize := par.PayloadSize()
+
+		if seekOff+seekLen > parSize {
+			exec.status = statusOutOfRange
+			exec.err = object.ErrRangeOutOfBounds
+			return
+		}
+
+		childSize := child.PayloadSize()
+
+		if to := seekOff + seekLen; childSize > 0 && to > parSize-childSize {
+			pref := to + childSize - parSize
+			payload = child.Payload()[:pref]
+			rng.SetLength(rng.GetLength() - pref)
+		}
+
+		exec.curOff = parSize - childSize
+	} else {
+		payload = child.Payload()
+	}
+
+	object.NewRawFromObject(exec.collectedObject).SetPayload(payload)
 
 	return child.PreviousID(), child.Children()
 }
 
-func (exec *execCtx) overtakePayloadDirectly(children []*objectSDK.ID) {
+func (exec *execCtx) overtakePayloadDirectly(children []*objectSDK.ID, rngs []*objectSDK.Range) {
+	withRng := len(rngs) > 0
+
 	for i := range children {
-		child, ok := exec.getChild(children[i])
+		var r *objectSDK.Range
+		if withRng {
+			r = rngs[i]
+		}
+
+		child, ok := exec.getChild(children[i], r)
 		if !ok {
 			return
 		}
@@ -97,26 +140,23 @@ func (exec *execCtx) overtakePayloadDirectly(children []*objectSDK.ID) {
 }
 
 func (exec *execCtx) overtakePayloadInReverse(prev *objectSDK.ID) bool {
-	chain := make([]*objectSDK.ID, 0)
+	chain, rngs := exec.buildChainInReverse(prev)
-
+	if len(chain) == 0 {
-	// fill the chain end-to-start
-	for prev != nil {
-		head, ok := exec.headChild(prev)
-		if !ok {
 		return false
 	}
 
-		chain = append(chain, head.ID())
+	reverseRngs := len(rngs) > 0
-
-		prev = head.PreviousID()
-	}
 
 	// reverse chain
 	for left, right := 0, len(chain)-1; left < right; left, right = left+1, right-1 {
 		chain[left], chain[right] = chain[right], chain[left]
+
+		if reverseRngs {
+			rngs[left], rngs[right] = rngs[right], rngs[left]
+		}
 	}
 
-	exec.overtakePayloadDirectly(chain)
+	exec.overtakePayloadDirectly(chain, rngs)
 
 	exec.status = statusOK
 	exec.err = nil
@@ -124,6 +164,59 @@ func (exec *execCtx) overtakePayloadInReverse(prev *objectSDK.ID) bool {
 	return true
 }
 
+func (exec *execCtx) buildChainInReverse(prev *objectSDK.ID) ([]*objectSDK.ID, []*objectSDK.Range) {
+	var (
+		chain   = make([]*objectSDK.ID, 0)
+		rngs    = make([]*objectSDK.Range, 0)
+		seekRng = exec.ctxRange()
+		from    = seekRng.GetOffset()
+		to      = from + seekRng.GetLength()
+	)
+
+	// fill the chain end-to-start
+	for prev != nil {
+		if exec.curOff < from {
+			break
+		}
+
+		head, ok := exec.headChild(prev)
+		if !ok {
+			return nil, nil
+		}
+
+		if seekRng != nil {
+			sz := head.PayloadSize()
+
+			exec.curOff -= sz
+
+			if exec.curOff < from+to {
+				off := uint64(0)
+				if from > exec.curOff {
+					off = from - exec.curOff
+					sz -= from - exec.curOff
+				}
+
+				if to < exec.curOff+off+sz {
+					sz = to - off - exec.curOff
+				}
+
+				r := objectSDK.NewRange()
+				r.SetOffset(off)
+				r.SetLength(sz)
+
+				rngs = append(rngs, r)
+				chain = append(chain, head.ID())
+			}
+		} else {
+			chain = append(chain, head.ID())
+		}
+
+		prev = head.PreviousID()
+	}
+
+	return chain, rngs
+}
+
 func equalAddresses(a, b *objectSDK.Address) bool {
 	return a.ContainerID().Equal(b.ContainerID()) &&
 		a.ObjectID().Equal(b.ObjectID())

pkg/services/object/get/exec.go

@@ -24,7 +24,7 @@ type execCtx struct {
 
 	ctx context.Context
 
-	prm Prm
+	prm RangePrm
 
 	statusError
 
@@ -33,6 +33,8 @@ type execCtx struct {
 	log *logger.Logger
 
 	collectedObject *object.Object
+
+	curOff uint64
 }
 
 const (
@@ -40,11 +42,17 @@ const (
 	statusOK
 	statusINHUMED
 	statusVIRTUAL
+	statusOutOfRange
 )
 
 func (exec *execCtx) setLogger(l *logger.Logger) {
+	req := "GET"
+	if exec.ctxRange() != nil {
+		req = "GET_RANGE"
+	}
+
 	exec.log = l.With(
-		zap.String("request", "GET"),
+		zap.String("request", req),
 		zap.Stringer("address", exec.address()),
 		zap.Bool("raw", exec.isRaw()),
 		zap.Bool("local", exec.isLocal()),
@@ -62,11 +70,11 @@ func (exec execCtx) isLocal() bool {
 }
 
 func (exec execCtx) isRaw() bool {
-	return exec.prm.raw
+	return exec.prm.RawFlag()
 }
 
 func (exec execCtx) address() *objectSDK.Address {
-	return exec.prm.addr
+	return exec.prm.Address()
 }
 
 func (exec execCtx) key() *ecdsa.PrivateKey {
@@ -79,8 +87,8 @@ func (exec execCtx) callOptions() []client.CallOption {
 
 func (exec execCtx) remotePrm() *client.GetObjectParams {
 	return new(client.GetObjectParams).
-		WithAddress(exec.prm.addr).
+		WithAddress(exec.prm.Address()).
-		WithRawFlag(exec.prm.raw)
+		WithRawFlag(exec.prm.RawFlag())
 }
 
 func (exec *execCtx) canAssemble() bool {
@@ -95,6 +103,10 @@ func (exec *execCtx) containerID() *container.ID {
 	return exec.address().ContainerID()
 }
 
+func (exec *execCtx) ctxRange() *objectSDK.Range {
+	return exec.prm.rng
+}
+
 func (exec *execCtx) generateTraverser(addr *objectSDK.Address) (*placement.Traverser, bool) {
 	t, err := exec.svc.traverserGenerator.GenerateTraverser(addr)
 
@@ -113,18 +125,19 @@ func (exec *execCtx) generateTraverser(addr *objectSDK.Address) (*placement.Trav
 	}
 }
 
-func (exec *execCtx) getChild(id *objectSDK.ID) (*object.Object, bool) {
+func (exec *execCtx) getChild(id *objectSDK.ID, rng *objectSDK.Range) (*object.Object, bool) {
 	w := newSimpleObjectWriter()
 
 	p := exec.prm
 	p.common = p.common.WithLocalOnly(false)
-	p.SetObjectWriter(w)
+	p.objWriter = w
+	p.SetRange(rng)
 
 	addr := objectSDK.NewAddress()
 	addr.SetContainerID(exec.address().ContainerID())
 	addr.SetObjectID(id)
 
-	p.SetAddress(addr)
+	p.WithAddress(addr)
 
 	exec.statusError = exec.svc.get(exec.context(), p)
 
@@ -138,9 +151,11 @@ func (exec *execCtx) headChild(id *objectSDK.ID) (*object.Object, bool) {
 
 	p := exec.prm
 	p.common = p.common.WithLocalOnly(false)
-	p.SetAddress(childAddr)
+	p.WithAddress(childAddr)
 
-	header, err := exec.svc.headSvc.head(exec.context(), p)
+	header, err := exec.svc.headSvc.head(exec.context(), Prm{
+		commonPrm: p.commonPrm,
+	})
 
 	switch {
 	default:
@@ -204,6 +219,10 @@ func mergeSplitInfo(dst, src *objectSDK.SplitInfo) {
 }
 
 func (exec *execCtx) writeCollectedHeader() bool {
+	if exec.ctxRange() != nil {
+		return true
+	}
+
 	err := exec.prm.objWriter.WriteHeader(
 		object.NewRawFromObject(exec.collectedObject).CutPayload().Object(),
 	)

pkg/services/object/get/get.go

@@ -9,10 +9,17 @@ import (
 
 // Get serves a request to get an object by address, and returns Streamer instance.
 func (s *Service) Get(ctx context.Context, prm Prm) error {
+	return s.get(ctx, RangePrm{
+		commonPrm: prm.commonPrm,
+	}).err
+}
+
+// GetRange serves a request to get an object by address, and returns Streamer instance.
+func (s *Service) GetRange(ctx context.Context, prm RangePrm) error {
 	return s.get(ctx, prm).err
 }
 
-func (s *Service) get(ctx context.Context, prm Prm) statusError {
+func (s *Service) get(ctx context.Context, prm RangePrm) statusError {
 	exec := &execCtx{
 		svc:       s,
 		ctx:       ctx,
@@ -46,6 +53,8 @@ func (exec *execCtx) analyzeStatus(execCnr bool) {
 	case statusVIRTUAL:
 		exec.log.Debug("requested object is virtual")
 		exec.assemble()
+	case statusOutOfRange:
+		exec.log.Debug("requested range is out of object bounds")
 	default:
 		exec.log.Debug("operation finished with error",
 			zap.String("error", exec.err.Error()),

pkg/services/object/get/get_test.go

@@ -93,17 +93,21 @@ func newTestClient() *testClient {
 	}
 }
 
-func (c *testClient) GetObject(_ context.Context, p Prm) (*objectSDK.Object, error) {
+func (c *testClient) GetObject(_ context.Context, p RangePrm) (*objectSDK.Object, error) {
-	v, ok := c.results[p.addr.String()]
+	v, ok := c.results[p.Address().String()]
 	if !ok {
 		return nil, object.ErrNotFound
 	}
 
-	return v.obj.Object().SDK(), v.err
+	if v.err != nil {
+		return nil, v.err
+	}
+
+	return cutToRange(v.obj.Object(), p.rng).SDK(), nil
 }
 
 func (c *testClient) head(_ context.Context, p Prm) (*object.Object, error) {
-	v, ok := c.results[p.addr.String()]
+	v, ok := c.results[p.Address().String()]
 	if !ok {
 		return nil, object.ErrNotFound
 	}
@@ -122,11 +126,11 @@ func (c *testClient) addResult(addr *objectSDK.Address, obj *object.RawObject, e
 	}{obj: obj, err: err}
 }
 
-func (s *testStorage) Get(addr *objectSDK.Address) (*object.Object, error) {
+func (s *testStorage) Get(p RangePrm) (*object.Object, error) {
 	var (
 		ok    bool
 		obj   *object.Object
-		sAddr = addr.String()
+		sAddr = p.Address().String()
 	)
 
 	if _, ok = s.inhumed[sAddr]; ok {
@@ -138,12 +142,30 @@ func (s *testStorage) Get(addr *objectSDK.Address) (*object.Object, error) {
 	}
 
 	if obj, ok = s.phy[sAddr]; ok {
-		return obj, nil
+		return cutToRange(obj, p.rng), nil
 	}
 
 	return nil, object.ErrNotFound
 }
 
+func cutToRange(o *object.Object, rng *objectSDK.Range) *object.Object {
+	obj := object.NewRawFromObject(o)
+
+	if rng == nil {
+		return obj.Object()
+	}
+
+	from := rng.GetOffset()
+	to := from + rng.GetLength()
+
+	payload := obj.Payload()
+
+	obj = obj.CutPayload()
+	obj.SetPayload(payload[from:to])
+
+	return obj.Object()
+}
+
 func (s *testStorage) addPhy(addr *objectSDK.Address, obj *object.RawObject) {
 	s.phy[addr.String()] = obj.Object()
 }
@@ -204,11 +226,27 @@ func TestGetLocalOnly(t *testing.T) {
 	}
 
 	newPrm := func(raw bool, w ObjectWriter) Prm {
-		return Prm{
+		p := Prm{}
-			objWriter: w,
+		p.SetObjectWriter(w)
-			raw:       raw,
+		p.WithRawFlag(raw)
-			common:    new(util.CommonPrm).WithLocalOnly(true),
+		p.common = new(util.CommonPrm).WithLocalOnly(true)
+
+		return p
 	}
+
+	newRngPrm := func(raw bool, w ChunkWriter, off, ln uint64) RangePrm {
+		p := RangePrm{}
+		p.SetChunkWriter(w)
+		p.WithRawFlag(raw)
+		p.common = new(util.CommonPrm).WithLocalOnly(true)
+
+		r := objectSDK.NewRange()
+		r.SetOffset(off)
+		r.SetLength(ln)
+
+		p.SetRange(r)
+
+		return p
 	}
 
 	t.Run("OK", func(t *testing.T) {
@@ -218,12 +256,16 @@ func TestGetLocalOnly(t *testing.T) {
 		w := newSimpleObjectWriter()
 		p := newPrm(false, w)
 
+		payloadSz := uint64(10)
+		payload := make([]byte, payloadSz)
+		rand.Read(payload)
+
 		addr := generateAddress()
-		obj := generateObject(addr, nil, nil)
+		obj := generateObject(addr, nil, payload)
 
 		storage.addPhy(addr, obj)
 
-		p.addr = addr
+		p.WithAddress(addr)
 
 		storage.addPhy(addr, obj)
 
@@ -232,6 +274,15 @@ func TestGetLocalOnly(t *testing.T) {
 		require.NoError(t, err)
 
 		require.Equal(t, obj.Object(), w.object())
+
+		w = newSimpleObjectWriter()
+
+		rngPrm := newRngPrm(false, w, payloadSz/3, payloadSz/3)
+		rngPrm.WithAddress(addr)
+
+		err = svc.GetRange(ctx, rngPrm)
+		require.NoError(t, err)
+		require.Equal(t, payload[payloadSz/3:2*payloadSz/3], w.object().Payload())
 	})
 
 	t.Run("INHUMED", func(t *testing.T) {
@@ -244,11 +295,17 @@ func TestGetLocalOnly(t *testing.T) {
 
 		storage.inhume(addr)
 
-		p.addr = addr
+		p.WithAddress(addr)
 
 		err := svc.Get(ctx, p)
 
 		require.True(t, errors.Is(err, object.ErrAlreadyRemoved))
+
+		rngPrm := newRngPrm(false, nil, 0, 0)
+		rngPrm.WithAddress(addr)
+
+		err = svc.GetRange(ctx, rngPrm)
+		require.True(t, errors.Is(err, object.ErrAlreadyRemoved))
 	})
 
 	t.Run("404", func(t *testing.T) {
@@ -259,11 +316,18 @@ func TestGetLocalOnly(t *testing.T) {
 
 		addr := generateAddress()
 
-		p.addr = addr
+		p.WithAddress(addr)
 
 		err := svc.Get(ctx, p)
 
 		require.True(t, errors.Is(err, object.ErrNotFound))
+
+		rngPrm := newRngPrm(false, nil, 0, 0)
+		rngPrm.WithAddress(addr)
+
+		err = svc.GetRange(ctx, rngPrm)
+
+		require.True(t, errors.Is(err, object.ErrNotFound))
 	})
 
 	t.Run("VIRTUAL", func(t *testing.T) {
@@ -279,7 +343,7 @@ func TestGetLocalOnly(t *testing.T) {
 		splitInfo.SetLink(generateID())
 		splitInfo.SetLastPart(generateID())
 
-		p.addr = addr
+		p.WithAddress(addr)
 
 		storage.addVirtual(addr, splitInfo)
 
@@ -290,6 +354,13 @@ func TestGetLocalOnly(t *testing.T) {
 		require.True(t, errors.As(err, &errSplit))
 
 		require.Equal(t, splitInfo, errSplit.SplitInfo())
+
+		rngPrm := newRngPrm(true, nil, 0, 0)
+		rngPrm.WithAddress(addr)
+
+		err = svc.Get(ctx, p)
+
+		require.True(t, errors.As(err, &errSplit))
 	})
 }
 
@@ -347,6 +418,7 @@ func generateChain(ln int, cid *container.ID) ([]*object.RawObject, []*objectSDK
 
 		o := generateObject(addr, prevID, []byte{byte(i)})
 		o.SetPayload(payloadPart)
+		o.SetPayloadSize(uint64(len(payloadPart)))
 		o.SetID(curID)
 
 		payload = append(payload, payloadPart...)
@@ -381,11 +453,27 @@ func TestGetRemoteSmall(t *testing.T) {
 	}
 
 	newPrm := func(raw bool, w ObjectWriter) Prm {
-		return Prm{
+		p := Prm{}
-			objWriter: w,
+		p.SetObjectWriter(w)
-			raw:       raw,
+		p.WithRawFlag(raw)
-			common:    new(util.CommonPrm).WithLocalOnly(false),
+		p.common = new(util.CommonPrm).WithLocalOnly(false)
+
+		return p
 	}
+
+	newRngPrm := func(raw bool, w ChunkWriter, off, ln uint64) RangePrm {
+		p := RangePrm{}
+		p.SetChunkWriter(w)
+		p.WithRawFlag(raw)
+		p.common = new(util.CommonPrm).WithLocalOnly(false)
+
+		r := objectSDK.NewRange()
+		r.SetOffset(off)
+		r.SetLength(ln)
+
+		p.SetRange(r)
+
+		return p
 	}
 
 	t.Run("OK", func(t *testing.T) {
@@ -400,7 +488,11 @@ func TestGetRemoteSmall(t *testing.T) {
 			},
 		}
 
-		obj := generateObject(addr, nil, nil)
+		payloadSz := uint64(10)
+		payload := make([]byte, payloadSz)
+		rand.Read(payload)
+
+		obj := generateObject(addr, nil, payload)
 
 		c1 := newTestClient()
 		c1.addResult(addr, obj, nil)
@@ -418,7 +510,7 @@ func TestGetRemoteSmall(t *testing.T) {
 		w := newSimpleObjectWriter()
 
 		p := newPrm(false, w)
-		p.addr = addr
+		p.WithAddress(addr)
 
 		err := svc.Get(ctx, p)
 		require.NoError(t, err)
@@ -429,6 +521,14 @@ func TestGetRemoteSmall(t *testing.T) {
 		err = svc.Get(ctx, p)
 		require.NoError(t, err)
 		require.Equal(t, obj.Object(), w.object())
+
+		w = newSimpleObjectWriter()
+		rngPrm := newRngPrm(false, w, payloadSz/3, payloadSz/3)
+		rngPrm.WithAddress(addr)
+
+		err = svc.GetRange(ctx, rngPrm)
+		require.NoError(t, err)
+		require.Equal(t, payload[payloadSz/3:2*payloadSz/3], w.object().Payload())
 	})
 
 	t.Run("INHUMED", func(t *testing.T) {
@@ -457,10 +557,16 @@ func TestGetRemoteSmall(t *testing.T) {
 		})
 
 		p := newPrm(false, nil)
-		p.addr = addr
+		p.WithAddress(addr)
 
 		err := svc.Get(ctx, p)
 		require.True(t, errors.Is(err, object.ErrAlreadyRemoved))
+
+		rngPrm := newRngPrm(false, nil, 0, 0)
+		rngPrm.WithAddress(addr)
+
+		err = svc.GetRange(ctx, rngPrm)
+		require.True(t, errors.Is(err, object.ErrAlreadyRemoved))
 	})
 
 	t.Run("404", func(t *testing.T) {
@@ -489,10 +595,16 @@ func TestGetRemoteSmall(t *testing.T) {
 		})
 
 		p := newPrm(false, nil)
-		p.addr = addr
+		p.WithAddress(addr)
 
 		err := svc.Get(ctx, p)
 		require.True(t, errors.Is(err, object.ErrNotFound))
+
+		rngPrm := newRngPrm(false, nil, 0, 0)
+		rngPrm.WithAddress(addr)
+
+		err = svc.GetRange(ctx, rngPrm)
+		require.True(t, errors.Is(err, object.ErrNotFound))
 	})
 
 	t.Run("VIRTUAL", func(t *testing.T) {
@@ -534,10 +646,16 @@ func TestGetRemoteSmall(t *testing.T) {
 				})
 
 				p := newPrm(false, nil)
-				p.addr = addr
+				p.WithAddress(addr)
 
 				err := svc.Get(ctx, p)
 				require.True(t, errors.Is(err, object.ErrNotFound))
+
+				rngPrm := newRngPrm(false, nil, 0, 0)
+				rngPrm.WithAddress(addr)
+
+				err = svc.GetRange(ctx, rngPrm)
+				require.True(t, errors.Is(err, object.ErrNotFound))
 			})
 
 			t.Run("get chain element failure", func(t *testing.T) {
@@ -546,6 +664,7 @@ func TestGetRemoteSmall(t *testing.T) {
 				addr.SetObjectID(generateID())
 
 				srcObj := generateObject(addr, nil, nil)
+				srcObj.SetPayloadSize(10)
 
 				ns, as := testNodeMatrix(t, []int{2})
 
@@ -580,7 +699,7 @@ func TestGetRemoteSmall(t *testing.T) {
 				c2.addResult(addr, nil, objectSDK.NewSplitInfoError(splitInfo))
 				c2.addResult(linkAddr, linkingObj, nil)
 				c2.addResult(child1Addr, children[0], nil)
-				c2.addResult(child2Addr, nil, errors.New("any error"))
+				c2.addResult(child2Addr, nil, object.ErrNotFound)
 
 				builder := &testPlacementBuilder{
 					vectors: map[string][]netmap.Nodes{
@@ -599,10 +718,18 @@ func TestGetRemoteSmall(t *testing.T) {
 				})
 
 				p := newPrm(false, newSimpleObjectWriter())
-				p.addr = addr
+				p.WithAddress(addr)
 
 				err := svc.Get(ctx, p)
 				require.True(t, errors.Is(err, object.ErrNotFound))
+
+				svc.headSvc = c2
+
+				rngPrm := newRngPrm(false, newSimpleObjectWriter(), 0, 1)
+				rngPrm.WithAddress(addr)
+
+				err = svc.GetRange(ctx, rngPrm)
+				require.True(t, errors.Is(err, object.ErrNotFound))
 			})
 
 			t.Run("OK", func(t *testing.T) {
@@ -619,6 +746,7 @@ func TestGetRemoteSmall(t *testing.T) {
 
 				children, childIDs, payload := generateChain(2, cid)
 				srcObj.SetPayload(payload)
+				srcObj.SetPayloadSize(uint64(len(payload)))
 
 				linkAddr := objectSDK.NewAddress()
 				linkAddr.SetContainerID(cid)
@@ -667,11 +795,26 @@ func TestGetRemoteSmall(t *testing.T) {
 				w := newSimpleObjectWriter()
 
 				p := newPrm(false, w)
-				p.addr = addr
+				p.WithAddress(addr)
 
 				err := svc.Get(ctx, p)
 				require.NoError(t, err)
 				require.Equal(t, srcObj.Object(), w.object())
+
+				svc.headSvc = c2
+
+				w = newSimpleObjectWriter()
+				payloadSz := srcObj.PayloadSize()
+
+				off := payloadSz / 3
+				ln := payloadSz / 3
+
+				rngPrm := newRngPrm(false, w, off, ln)
+				rngPrm.WithAddress(addr)
+
+				err = svc.GetRange(ctx, rngPrm)
+				require.NoError(t, err)
+				require.Equal(t, payload[off:off+ln], w.object().Payload())
 			})
 		})
 
@@ -713,10 +856,16 @@ func TestGetRemoteSmall(t *testing.T) {
 				})
 
 				p := newPrm(false, nil)
-				p.addr = addr
+				p.WithAddress(addr)
 
 				err := svc.Get(ctx, p)
 				require.True(t, errors.Is(err, object.ErrNotFound))
+
+				rngPrm := newRngPrm(false, nil, 0, 0)
+				rngPrm.WithAddress(addr)
+
+				err = svc.GetRange(ctx, rngPrm)
+				require.True(t, errors.Is(err, object.ErrNotFound))
 			})
 
 			t.Run("get chain element failure", func(t *testing.T) {
@@ -725,6 +874,7 @@ func TestGetRemoteSmall(t *testing.T) {
 				addr.SetObjectID(generateID())
 
 				srcObj := generateObject(addr, nil, nil)
+				srcObj.SetPayloadSize(10)
 
 				ns, as := testNodeMatrix(t, []int{2})
 
@@ -757,7 +907,6 @@ func TestGetRemoteSmall(t *testing.T) {
 						addr.String():         ns,
 						rightAddr.String():    ns,
 						preRightAddr.String(): ns,
-						preRightAddr.String(): ns,
 					},
 				}
 
@@ -773,10 +922,16 @@ func TestGetRemoteSmall(t *testing.T) {
 				svc.headSvc = headSvc
 
 				p := newPrm(false, newSimpleObjectWriter())
-				p.addr = addr
+				p.WithAddress(addr)
 
 				err := svc.Get(ctx, p)
 				require.True(t, errors.Is(err, object.ErrNotFound))
+
+				rngPrm := newRngPrm(false, nil, 0, 1)
+				rngPrm.WithAddress(addr)
+
+				err = svc.GetRange(ctx, rngPrm)
+				require.True(t, errors.Is(err, object.ErrNotFound))
 			})
 
 			t.Run("OK", func(t *testing.T) {
@@ -792,6 +947,7 @@ func TestGetRemoteSmall(t *testing.T) {
 				splitInfo.SetLastPart(generateID())
 
 				children, _, payload := generateChain(2, cid)
+				srcObj.SetPayloadSize(uint64(len(payload)))
 				srcObj.SetPayload(payload)
 
 				rightObj := children[len(children)-1]
@@ -836,11 +992,24 @@ func TestGetRemoteSmall(t *testing.T) {
 				w := newSimpleObjectWriter()
 
 				p := newPrm(false, w)
-				p.addr = addr
+				p.WithAddress(addr)
 
 				err := svc.Get(ctx, p)
 				require.NoError(t, err)
 				require.Equal(t, srcObj.Object(), w.object())
+
+				w = newSimpleObjectWriter()
+				payloadSz := srcObj.PayloadSize()
+
+				off := payloadSz / 3
+				ln := payloadSz / 3
+
+				rngPrm := newRngPrm(false, w, off, ln)
+				rngPrm.WithAddress(addr)
+
+				err = svc.GetRange(ctx, rngPrm)
+				require.NoError(t, err)
+				require.Equal(t, payload[off:off+ln], w.object().Payload())
 			})
 		})
 	})

pkg/services/object/get/local.go

@@ -10,7 +10,7 @@ import (
 func (exec *execCtx) executeLocal() {
 	var err error
 
-	exec.collectedObject, err = exec.svc.localStorage.Get(exec.address())
+	exec.collectedObject, err = exec.svc.localStorage.Get(exec.prm)
 
 	var errSplitInfo *objectSDK.SplitInfoError
 
@@ -33,5 +33,8 @@ func (exec *execCtx) executeLocal() {
 		exec.status = statusVIRTUAL
 		mergeSplitInfo(exec.splitInfo(), errSplitInfo.SplitInfo())
 		exec.err = objectSDK.NewSplitInfoError(exec.infoSplit)
+	case errors.Is(err, object.ErrRangeOutOfBounds):
+		exec.status = statusOutOfRange
+		exec.err = object.ErrRangeOutOfBounds
 	}
 }

pkg/services/object/get/prm.go

@@ -11,6 +11,17 @@ import (
 
 // Prm groups parameters of Get service call.
 type Prm struct {
+	commonPrm
+}
+
+// RangePrm groups parameters of GetRange service call.
+type RangePrm struct {
+	commonPrm
+
+	rng *objectSDK.Range
+}
+
+type commonPrm struct {
 	objWriter ObjectWriter
 
 	// TODO: replace key and callOpts to CommonPrm
@@ -20,16 +31,19 @@ type Prm struct {
 
 	common *util.CommonPrm
 
-	// TODO: use parameters from NeoFS SDK
+	client.GetObjectParams
-	addr *objectSDK.Address
+}
 
-	raw bool
+// ChunkWriter is an interface of target component
+// to write payload chunk.
+type ChunkWriter interface {
+	WriteChunk([]byte) error
 }
 
 // ObjectWriter is an interface of target component to write object.
 type ObjectWriter interface {
 	WriteHeader(*object.Object) error
-	WriteChunk([]byte) error
+	ChunkWriter
 }
 
 // SetObjectWriter sets target component to write the object.
@@ -38,22 +52,23 @@ func (p *Prm) SetObjectWriter(w ObjectWriter) {
 }
 
 // SetPrivateKey sets private key to use during execution.
-func (p *Prm) SetPrivateKey(key *ecdsa.PrivateKey) {
+func (p *commonPrm) SetPrivateKey(key *ecdsa.PrivateKey) {
 	p.key = key
 }
 
 // SetRemoteCallOptions sets call options remote remote client calls.
-func (p *Prm) SetRemoteCallOptions(opts ...client.CallOption) {
+func (p *commonPrm) SetRemoteCallOptions(opts ...client.CallOption) {
 	p.callOpts = opts
 }
 
-// SetAddress sets address of the requested object.
+// SetObjectWriter sets target component to write the object payload range.
-func (p *Prm) SetAddress(addr *objectSDK.Address) {
+func (p *RangePrm) SetChunkWriter(w ChunkWriter) {
-	p.addr = addr
+	p.objWriter = &rangeWriter{
+		chunkWriter: w,
+	}
 }
 
-// SetRaw sets raw flag. If flag is set,
+// SetRange sets range of the requested payload data.
-// object assembling will not be undertaken.
+func (p *RangePrm) SetRange(rng *objectSDK.Range) {
-func (p *Prm) SetRaw(raw bool) {
+	p.rng = rng
-	p.raw = raw
 }

pkg/services/object/get/service.go

@@ -25,7 +25,7 @@ type Service struct {
 type Option func(*cfg)
 
 type getClient interface {
-	GetObject(context.Context, Prm) (*objectSDK.Object, error)
+	GetObject(context.Context, RangePrm) (*objectSDK.Object, error)
 }
 
 type cfg struct {
@@ -38,7 +38,7 @@ type cfg struct {
 	}
 
 	localStorage interface {
-		Get(*objectSDK.Address) (*object.Object, error)
+		Get(RangePrm) (*object.Object, error)
 	}
 
 	clientCache interface {

pkg/services/object/get/util.go

@@ -15,7 +15,7 @@ import (
 type simpleObjectWriter struct {
 	obj *object.RawObject
 
-	payload []byte
+	pld []byte
 }
 
 type clientCacheWrapper struct {
@@ -36,20 +36,28 @@ type headSvcWrapper struct {
 	svc *headsvc.Service
 }
 
+type rangeWriter struct {
+	ObjectWriter
+
+	chunkWriter ChunkWriter
+}
+
 func newSimpleObjectWriter() *simpleObjectWriter {
-	return new(simpleObjectWriter)
+	return &simpleObjectWriter{
+		obj: object.NewRaw(),
+	}
 }
 
 func (s *simpleObjectWriter) WriteHeader(obj *object.Object) error {
 	s.obj = object.NewRawFromObject(obj)
 
-	s.payload = make([]byte, 0, obj.PayloadSize())
+	s.pld = make([]byte, 0, obj.PayloadSize())
 
 	return nil
 }
 
 func (s *simpleObjectWriter) WriteChunk(p []byte) error {
-	s.payload = append(s.payload, p...)
+	s.pld = append(s.pld, p...)
 	return nil
 }
 
@@ -58,8 +66,8 @@ func (s *simpleObjectWriter) Close() error {
 }
 
 func (s *simpleObjectWriter) object() *object.Object {
-	if len(s.payload) > 0 {
+	if len(s.pld) > 0 {
-		s.obj.SetPayload(s.payload)
+		s.obj.SetPayload(s.pld)
 	}
 
 	return s.obj.Object()
@@ -73,20 +81,48 @@ func (c *clientCacheWrapper) get(key *ecdsa.PrivateKey, addr string) (getClient,
 	}, err
 }
 
-func (c *clientWrapper) GetObject(ctx context.Context, p Prm) (*objectSDK.Object, error) {
+func (c *clientWrapper) GetObject(ctx context.Context, p RangePrm) (*objectSDK.Object, error) {
+	// we don't specify payload writer because we accumulate
+	// the object locally (even huge).
+	if p.rng != nil {
+		data, err := c.client.ObjectPayloadRangeData(ctx,
+			new(client.RangeDataParams).
+				WithAddress(p.Address()).
+				WithRange(p.rng).
+				WithRaw(p.RawFlag()),
+			p.callOpts...,
+		)
+		if err != nil {
+			return nil, err
+		}
+
+		return payloadOnlyObject(data), nil
+	} else {
 		// we don't specify payload writer because we accumulate
 		// the object locally (even huge).
 		return c.client.GetObject(ctx,
 			new(client.GetObjectParams).
-			WithAddress(p.addr).
+				WithAddress(p.Address()).
-			WithRawFlag(true),
+				WithRawFlag(p.RawFlag()),
 			p.callOpts...,
 		)
 	}
+}
 
-func (e *storageEngineWrapper) Get(addr *objectSDK.Address) (*object.Object, error) {
+func (e *storageEngineWrapper) Get(p RangePrm) (*object.Object, error) {
+	if p.rng != nil {
+		r, err := e.engine.GetRange(new(engine.RngPrm).
+			WithAddress(p.Address()).
+			WithPayloadRange(p.rng),
+		)
+		if err != nil {
+			return nil, err
+		}
+
+		return r.Object(), nil
+	} else {
 		r, err := e.engine.Get(new(engine.GetPrm).
-		WithAddress(addr),
+			WithAddress(p.Address()),
 		)
 		if err != nil {
 			return nil, err
@@ -94,10 +130,11 @@ func (e *storageEngineWrapper) Get(addr *objectSDK.Address) (*object.Object, err
 
 		return r.Object(), nil
 	}
+}
 
 func (s *headSvcWrapper) head(ctx context.Context, p Prm) (*object.Object, error) {
 	r, err := s.svc.Head(ctx, new(headsvc.Prm).
-		WithAddress(p.addr).
+		WithAddress(p.Address()).
 		WithCommonPrm(p.common).
 		Short(false),
 	)
@@ -108,3 +145,14 @@ func (s *headSvcWrapper) head(ctx context.Context, p Prm) (*object.Object, error
 
 	return r.Header(), nil
 }
+
+func (w *rangeWriter) WriteChunk(p []byte) error {
+	return w.chunkWriter.WriteChunk(p)
+}
+
+func payloadOnlyObject(payload []byte) *objectSDK.Object {
+	rawObj := object.NewRaw()
+	rawObj.SetPayload(payload)
+
+	return rawObj.Object().SDK()
+}

pkg/services/object/get/v2/service.go

@@ -55,6 +55,25 @@ func (s *Service) Get(req *objectV2.GetRequest, stream objectSvc.GetObjectStream
 	}
 }
 
+// GetRange calls internal service and returns v2 payload range stream.
+func (s *Service) GetRange(req *objectV2.GetRangeRequest, stream objectSvc.GetObjectRangeStream) error {
+	p, err := s.toRangePrm(req, stream)
+	if err != nil {
+		return err
+	}
+
+	err = s.svc.GetRange(stream.Context(), *p)
+
+	var splitErr *object.SplitInfoError
+
+	switch {
+	case errors.As(err, &splitErr):
+		return stream.Send(splitInfoRangeResponse(splitErr.SplitInfo()))
+	default:
+		return err
+	}
+}
+
 func WithInternalService(v *getsvc.Service) Option {
 	return func(c *cfg) {
 		c.svc = v

pkg/services/object/get/v2/streamer.go

@@ -10,6 +10,10 @@ type streamObjectWriter struct {
 	objectSvc.GetObjectStream
 }
 
+type streamObjectRangeWriter struct {
+	objectSvc.GetObjectRangeStream
+}
+
 func (s *streamObjectWriter) WriteHeader(obj *object.Object) error {
 	p := new(objectV2.GetObjectPartInit)
 
@@ -38,3 +42,21 @@ func newResponse(p objectV2.GetObjectPart) *objectV2.GetResponse {
 
 	return r
 }
+
+func (s *streamObjectRangeWriter) WriteChunk(chunk []byte) error {
+	return s.GetObjectRangeStream.Send(newRangeResponse(chunk))
+}
+
+func newRangeResponse(p []byte) *objectV2.GetRangeResponse {
+	r := new(objectV2.GetRangeResponse)
+
+	body := new(objectV2.GetRangeResponseBody)
+	r.SetBody(body)
+
+	part := new(objectV2.GetRangePartChunk)
+	part.SetChunk(p)
+
+	body.SetRangePart(part)
+
+	return r
+}

pkg/services/object/get/v2/util.go

@@ -23,14 +23,35 @@ func (s *Service) toPrm(req *objectV2.GetRequest, stream objectSvc.GetObjectStre
 	p.SetPrivateKey(key)
 
 	body := req.GetBody()
-	p.SetAddress(object.NewAddressFromV2(body.GetAddress()))
+	p.WithAddress(object.NewAddressFromV2(body.GetAddress()))
-	p.SetRaw(body.GetRaw())
+	p.WithRawFlag(body.GetRaw())
 	p.SetRemoteCallOptions(remoteCallOptionsFromMeta(meta)...)
 	p.SetObjectWriter(&streamObjectWriter{stream})
 
 	return p, nil
 }
 
+func (s *Service) toRangePrm(req *objectV2.GetRangeRequest, stream objectSvc.GetObjectRangeStream) (*getsvc.RangePrm, error) {
+	meta := req.GetMetaHeader()
+
+	key, err := s.keyStorage.GetKey(token.NewSessionTokenFromV2(meta.GetSessionToken()))
+	if err != nil {
+		return nil, err
+	}
+
+	p := new(getsvc.RangePrm)
+	p.SetPrivateKey(key)
+
+	body := req.GetBody()
+	p.WithAddress(object.NewAddressFromV2(body.GetAddress()))
+	p.WithRawFlag(body.GetRaw())
+	p.SetRemoteCallOptions(remoteCallOptionsFromMeta(meta)...)
+	p.SetChunkWriter(&streamObjectRangeWriter{stream})
+	p.SetRange(object.NewRangeFromV2(body.GetRange()))
+
+	return p, nil
+}
+
 // can be shared accross all services
 func remoteCallOptionsFromMeta(meta *session.RequestMetaHeader) []client.CallOption {
 	xHdrs := meta.GetXHeaders()
@@ -60,3 +81,14 @@ func splitInfoResponse(info *object.SplitInfo) *objectV2.GetResponse {
 
 	return resp
 }
+
+func splitInfoRangeResponse(info *object.SplitInfo) *objectV2.GetRangeResponse {
+	resp := new(objectV2.GetRangeResponse)
+
+	body := new(objectV2.GetRangeResponseBody)
+	resp.SetBody(body)
+
+	body.SetRangePart(info.ToV2())
+
+	return resp
+}

pkg/services/object/head/v2/util.go

@@ -40,10 +40,7 @@ func fullPartFromResponse(r *headsvc.Response) objectV2.GetHeaderPart {
 	hs.SetHeader(obj.GetHeader())
 	hs.SetSignature(obj.GetSignature())
 
-	p := new(objectV2.GetHeaderPartFull)
+	return hs
-	p.SetHeaderWithSignature(hs)
-
-	return p
 }
 
 func shortPartFromResponse(r *headsvc.Response) objectV2.GetHeaderPart {
@@ -56,8 +53,5 @@ func shortPartFromResponse(r *headsvc.Response) objectV2.GetHeaderPart {
 	sh.SetVersion(hdr.GetVersion())
 	sh.SetObjectType(hdr.GetObjectType())
 
-	p := new(objectV2.GetHeaderPartShort)
+	return sh
-	p.SetShortHeader(sh)
-
-	return p
 }

pkg/services/object/range/chain.go

@@ -1,114 +0,0 @@
-package rangesvc
-
-import (
-	"fmt"
-
-	objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
-
-	"github.com/nspcc-dev/neofs-node/pkg/core/object"
-)
-
-type rangeTraverser struct {
-	chain *rangeChain
-
-	seekBounds *rangeBounds
-}
-
-type rangeBounds struct {
-	left, right uint64
-}
-
-type objectRange struct {
-	rng *objectSDK.Range
-
-	id *objectSDK.ID
-}
-
-type rangeChain struct {
-	next, prev *rangeChain
-
-	bounds *rangeBounds
-
-	id *objectSDK.ID
-}
-
-func newRangeTraverser(originSize uint64, rightElement *object.Object, rngSeek *objectSDK.Range) *rangeTraverser {
-	right := &rangeChain{
-		bounds: &rangeBounds{
-			left:  originSize - rightElement.PayloadSize(),
-			right: originSize,
-		},
-		id: rightElement.ID(),
-	}
-
-	left := &rangeChain{
-		id: rightElement.PreviousID(),
-	}
-
-	left.next, right.prev = right, left
-
-	return &rangeTraverser{
-		chain: right,
-		seekBounds: &rangeBounds{
-			left:  rngSeek.GetOffset(),
-			right: rngSeek.GetOffset() + rngSeek.GetLength(),
-		},
-	}
-}
-
-func (c *rangeTraverser) next() *objectRange {
-	left := c.chain.bounds.left
-	seekLeft := c.seekBounds.left
-
-	res := new(objectRange)
-
-	if left > seekLeft {
-		res.id = c.chain.prev.id
-	} else {
-		res.id = c.chain.id
-		res.rng = objectSDK.NewRange()
-		res.rng.SetOffset(seekLeft - left)
-		res.rng.SetLength(min(c.chain.bounds.right, c.seekBounds.right) - seekLeft)
-	}
-
-	return res
-}
-
-func min(a, b uint64) uint64 {
-	if a < b {
-		return a
-	}
-
-	return b
-}
-
-func (c *rangeTraverser) pushHeader(obj *object.Object) {
-	id := obj.ID()
-	if !id.Equal(c.chain.prev.id) {
-		panic(fmt.Sprintf("(%T) unexpected identifier in header", c))
-	}
-
-	sz := obj.PayloadSize()
-
-	c.chain.prev.bounds = &rangeBounds{
-		left:  c.chain.bounds.left - sz,
-		right: c.chain.bounds.left,
-	}
-
-	c.chain = c.chain.prev
-
-	if prev := obj.PreviousID(); prev != nil {
-		c.chain.prev = &rangeChain{
-			next: c.chain,
-			id:   prev,
-		}
-	}
-}
-
-func (c *rangeTraverser) pushSuccessSize(sz uint64) {
-	c.seekBounds.left += sz
-
-	if c.seekBounds.left >= c.chain.bounds.right && c.chain.next != nil {
-		c.chain = c.chain.next
-	}
-}

pkg/services/object/range/local.go

@@ -1,28 +0,0 @@
-package rangesvc
-
-import (
-	"io"
-
-	"github.com/nspcc-dev/neofs-api-go/pkg/object"
-	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine"
-	"github.com/pkg/errors"
-)
-
-type localRangeWriter struct {
-	addr *object.Address
-
-	rng *object.Range
-
-	storage *engine.StorageEngine
-}
-
-func (l *localRangeWriter) WriteTo(w io.Writer) (int64, error) {
-	rngData, err := engine.GetRange(l.storage, l.addr, l.rng)
-	if err != nil {
-		return 0, errors.Wrapf(err, "(%T) could not get object from local storage", l)
-	}
-
-	n, err := w.Write(rngData)
-
-	return int64(n), err
-}

pkg/services/object/range/prm.go

@@ -1,48 +0,0 @@
-package rangesvc
-
-import (
-	"github.com/nspcc-dev/neofs-api-go/pkg/object"
-	"github.com/nspcc-dev/neofs-node/pkg/services/object/util"
-)
-
-type Prm struct {
-	common *util.CommonPrm
-
-	full bool
-
-	addr *object.Address
-
-	rng *object.Range
-}
-
-func (p *Prm) WithCommonPrm(v *util.CommonPrm) *Prm {
-	if p != nil {
-		p.common = v
-	}
-
-	return p
-}
-
-func (p *Prm) WithAddress(v *object.Address) *Prm {
-	if p != nil {
-		p.addr = v
-	}
-
-	return p
-}
-
-func (p *Prm) WithRange(v *object.Range) *Prm {
-	if p != nil {
-		p.rng = v
-	}
-
-	return p
-}
-
-func (p *Prm) FullRange() *Prm {
-	if p != nil {
-		p.full = true
-	}
-
-	return p
-}

pkg/services/object/range/remote.go

@@ -1,67 +0,0 @@
-package rangesvc
-
-import (
-	"context"
-	"io"
-
-	"github.com/nspcc-dev/neofs-api-go/pkg/client"
-	"github.com/nspcc-dev/neofs-api-go/pkg/object"
-	"github.com/nspcc-dev/neofs-api-go/pkg/token"
-	"github.com/nspcc-dev/neofs-node/pkg/network"
-	"github.com/nspcc-dev/neofs-node/pkg/network/cache"
-	"github.com/nspcc-dev/neofs-node/pkg/services/object/util"
-	"github.com/pkg/errors"
-)
-
-type remoteRangeWriter struct {
-	ctx context.Context
-
-	keyStorage *util.KeyStorage
-
-	node *network.Address
-
-	token *token.SessionToken
-
-	bearer *token.BearerToken
-
-	addr *object.Address
-
-	rng *object.Range
-
-	clientCache *cache.ClientCache
-
-	clientOpts []client.Option
-}
-
-func (r *remoteRangeWriter) WriteTo(w io.Writer) (int64, error) {
-	key, err := r.keyStorage.GetKey(r.token)
-	if err != nil {
-		return 0, errors.Wrapf(err, "(%T) could not receive private key", r)
-	}
-
-	addr, err := r.node.IPAddrString()
-	if err != nil {
-		return 0, err
-	}
-
-	c, err := r.clientCache.Get(key, addr, r.clientOpts...)
-	if err != nil {
-		return 0, errors.Wrapf(err, "(%T) could not create SDK client %s", r, addr)
-	}
-
-	// TODO: change ObjectPayloadRangeData to implement WriterTo
-	chunk, err := c.ObjectPayloadRangeData(r.ctx, new(client.RangeDataParams).
-		WithRange(r.rng).
-		WithAddress(r.addr),
-		client.WithTTL(1), // FIXME: use constant
-		client.WithSession(r.token),
-		client.WithBearer(r.bearer),
-	)
-	if err != nil {
-		return 0, errors.Wrapf(err, "(%T) could not read object payload range from %s", r, addr)
-	}
-
-	n, err := w.Write(chunk)
-
-	return int64(n), err
-}

pkg/services/object/range/res.go

@@ -1,27 +0,0 @@
-package rangesvc
-
-import (
-	"github.com/nspcc-dev/neofs-node/pkg/core/object"
-)
-
-type Result struct {
-	head *object.Object
-
-	stream Streamer
-}
-
-type Response struct {
-	chunk []byte
-}
-
-func (r *Response) PayloadChunk() []byte {
-	return r.chunk
-}
-
-func (r *Result) Head() *object.Object {
-	return r.head
-}
-
-func (r *Result) Stream() Streamer {
-	return r.stream
-}

pkg/services/object/range/service.go

@@ -1,190 +0,0 @@
-package rangesvc
-
-import (
-	"context"
-	"sync"
-
-	"github.com/nspcc-dev/neofs-api-go/pkg/client"
-	"github.com/nspcc-dev/neofs-api-go/pkg/object"
-	"github.com/nspcc-dev/neofs-node/pkg/core/container"
-	"github.com/nspcc-dev/neofs-node/pkg/core/netmap"
-	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine"
-	"github.com/nspcc-dev/neofs-node/pkg/network"
-	"github.com/nspcc-dev/neofs-node/pkg/network/cache"
-	headsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/head"
-	objutil "github.com/nspcc-dev/neofs-node/pkg/services/object/util"
-	"github.com/nspcc-dev/neofs-node/pkg/util"
-	"github.com/nspcc-dev/neofs-node/pkg/util/logger"
-	"github.com/pkg/errors"
-	"go.uber.org/zap"
-)
-
-type Service struct {
-	*cfg
-}
-
-type Option func(*cfg)
-
-type cfg struct {
-	keyStorage *objutil.KeyStorage
-
-	localStore *engine.StorageEngine
-
-	cnrSrc container.Source
-
-	netMapSrc netmap.Source
-
-	workerPool util.WorkerPool
-
-	localAddrSrc network.LocalAddressSource
-
-	headSvc *headsvc.Service
-
-	clientCache *cache.ClientCache
-
-	log *logger.Logger
-
-	clientOpts []client.Option
-}
-
-func defaultCfg() *cfg {
-	return &cfg{
-		workerPool: new(util.SyncWorkerPool),
-		log:        zap.L(),
-	}
-}
-
-func NewService(opts ...Option) *Service {
-	c := defaultCfg()
-
-	for i := range opts {
-		opts[i](c)
-	}
-
-	return &Service{
-		cfg: c,
-	}
-}
-
-func (s *Service) GetRange(ctx context.Context, prm *Prm) (*Result, error) {
-	headResult, err := s.headSvc.Head(ctx, new(headsvc.Prm).
-		WithAddress(prm.addr).
-		WithCommonPrm(prm.common),
-	)
-	if err != nil {
-		return nil, errors.Wrapf(err, "(%T) could not receive Head result", s)
-	}
-
-	origin := headResult.Header()
-
-	originSize := origin.PayloadSize()
-
-	if prm.full {
-		prm.rng = new(object.Range)
-		prm.rng.SetLength(originSize)
-	}
-
-	if originSize < prm.rng.GetOffset()+prm.rng.GetLength() {
-		return nil, errors.Errorf("(%T) requested payload range is out-of-bounds", s)
-	}
-
-	rngTraverser := objutil.NewRangeTraverser(originSize, origin, prm.rng)
-	if err := s.fillTraverser(ctx, prm, rngTraverser); err != nil {
-		return nil, errors.Wrapf(err, "(%T) could not fill range traverser", s)
-	}
-
-	return &Result{
-		head: origin,
-		stream: &streamer{
-			cfg:            s.cfg,
-			once:           new(sync.Once),
-			ctx:            ctx,
-			prm:            prm,
-			rangeTraverser: rngTraverser,
-		},
-	}, nil
-}
-
-func (s *Service) fillTraverser(ctx context.Context, prm *Prm, traverser *objutil.RangeTraverser) error {
-	addr := object.NewAddress()
-	addr.SetContainerID(prm.addr.ContainerID())
-
-	for {
-		nextID, nextRng := traverser.Next()
-		if nextRng != nil {
-			return nil
-		}
-
-		addr.SetObjectID(nextID)
-
-		head, err := s.headSvc.Head(ctx, new(headsvc.Prm).
-			WithAddress(addr).
-			WithCommonPrm(prm.common),
-		)
-		if err != nil {
-			return errors.Wrapf(err, "(%T) could not receive object header", s)
-		}
-
-		traverser.PushHeader(head.Header())
-	}
-}
-
-func WithKeyStorage(v *objutil.KeyStorage) Option {
-	return func(c *cfg) {
-		c.keyStorage = v
-	}
-}
-
-func WithLocalStorage(v *engine.StorageEngine) Option {
-	return func(c *cfg) {
-		c.localStore = v
-	}
-}
-
-func WithContainerSource(v container.Source) Option {
-	return func(c *cfg) {
-		c.cnrSrc = v
-	}
-}
-
-func WithNetworkMapSource(v netmap.Source) Option {
-	return func(c *cfg) {
-		c.netMapSrc = v
-	}
-}
-
-func WithWorkerPool(v util.WorkerPool) Option {
-	return func(c *cfg) {
-		c.workerPool = v
-	}
-}
-
-func WithLocalAddressSource(v network.LocalAddressSource) Option {
-	return func(c *cfg) {
-		c.localAddrSrc = v
-	}
-}
-
-func WithHeadService(v *headsvc.Service) Option {
-	return func(c *cfg) {
-		c.headSvc = v
-	}
-}
-
-func WithClientCache(v *cache.ClientCache) Option {
-	return func(c *cfg) {
-		c.clientCache = v
-	}
-}
-
-func WithLogger(l *logger.Logger) Option {
-	return func(c *cfg) {
-		c.log = l
-	}
-}
-
-func WithClientOptions(opts ...client.Option) Option {
-	return func(c *cfg) {
-		c.clientOpts = opts
-	}
-}

pkg/services/object/range/streamer.go

@@ -1,241 +0,0 @@
-package rangesvc
-
-import (
-	"context"
-	"io"
-	"sync"
-
-	"github.com/nspcc-dev/neofs-api-go/pkg/object"
-	"github.com/nspcc-dev/neofs-node/pkg/core/netmap"
-	"github.com/nspcc-dev/neofs-node/pkg/network"
-	svcutil "github.com/nspcc-dev/neofs-node/pkg/services/object/util"
-	"github.com/nspcc-dev/neofs-node/pkg/services/object_manager/placement"
-	"github.com/pkg/errors"
-)
-
-type Streamer interface {
-	Recv() (*Response, error)
-}
-
-type streamer struct {
-	*cfg
-
-	once *sync.Once
-
-	ctx context.Context
-
-	prm *Prm
-
-	traverser *placement.Traverser
-
-	rangeTraverser *svcutil.RangeTraverser
-
-	ch chan []byte
-}
-
-type chunkWriter struct {
-	ctx context.Context
-
-	ch chan<- []byte
-
-	written uint64
-}
-
-func (p *streamer) Recv() (*Response, error) {
-	var err error
-
-	p.once.Do(func() {
-		p.ch = make(chan []byte)
-		err = p.workerPool.Submit(p.start)
-	})
-
-	if err != nil {
-		return nil, errors.Wrapf(err, "(%T) could not start streaming", p)
-	}
-
-	select {
-	case <-p.ctx.Done():
-		return nil, errors.Wrapf(p.ctx.Err(), "(%T) stream is stopped by context", p)
-	case v, ok := <-p.ch:
-		if !ok {
-			if _, rng := p.rangeTraverser.Next(); rng.GetLength() != 0 {
-				return nil, errors.Errorf("(%T) incomplete get payload range", p)
-			}
-
-			return nil, io.EOF
-		}
-
-		return &Response{
-			chunk: v,
-		}, nil
-	}
-}
-
-func (p *streamer) switchToObject(id *object.ID) error {
-	var err error
-
-	// get latest network map
-	nm, err := netmap.GetLatestNetworkMap(p.netMapSrc)
-	if err != nil {
-		return errors.Wrapf(err, "(%T) could not get latest network map", p)
-	}
-
-	// get container to read payload range
-	cnr, err := p.cnrSrc.Get(p.prm.addr.ContainerID())
-	if err != nil {
-		return errors.Wrapf(err, "(%T) could not get container by ID", p)
-	}
-
-	// allocate placement traverser options
-	traverseOpts := make([]placement.Option, 0, 4)
-
-	// add common options
-	traverseOpts = append(traverseOpts,
-		// set processing container
-		placement.ForContainer(cnr),
-
-		// set success count (1st incoming full range)
-		placement.SuccessAfter(1),
-
-		// set identifier of the processing object
-		placement.ForObject(id),
-	)
-
-	// create placement builder from network map
-	builder := placement.NewNetworkMapBuilder(nm)
-
-	if p.prm.common.LocalOnly() {
-		// use local-only placement builder
-		builder = svcutil.NewLocalPlacement(builder, p.localAddrSrc)
-	}
-
-	// set placement builder
-	traverseOpts = append(traverseOpts, placement.UseBuilder(builder))
-
-	// build placement traverser
-	if p.traverser, err = placement.NewTraverser(traverseOpts...); err != nil {
-		return errors.Wrapf(err, "(%T) could not build placement traverser", p)
-	}
-
-	return nil
-}
-
-func (p *streamer) start() {
-	defer close(p.ch)
-
-	objAddr := object.NewAddress()
-	objAddr.SetContainerID(p.prm.addr.ContainerID())
-
-loop:
-	for {
-		select {
-		case <-p.ctx.Done():
-			// TODO: log this
-			break loop
-		default:
-		}
-
-		nextID, nextRange := p.rangeTraverser.Next()
-		if nextRange.GetLength() == 0 {
-			break
-		} else if err := p.switchToObject(nextID); err != nil {
-			// TODO: log error
-			break
-		}
-
-		objAddr.SetObjectID(nextID)
-
-	subloop:
-		for {
-			select {
-			case <-p.ctx.Done():
-				// TODO: log this
-				break loop
-			default:
-			}
-
-			addrs := p.traverser.Next()
-			if len(addrs) == 0 {
-				break
-			}
-
-			for i := range addrs {
-				wg := new(sync.WaitGroup)
-				wg.Add(1)
-
-				addr := addrs[i]
-
-				if err := p.workerPool.Submit(func() {
-					defer wg.Done()
-
-					var rngWriter io.WriterTo
-
-					if network.IsLocalAddress(p.localAddrSrc, addr) {
-						rngWriter = &localRangeWriter{
-							addr:    objAddr,
-							rng:     nextRange,
-							storage: p.localStore,
-						}
-					} else {
-						rngWriter = &remoteRangeWriter{
-							ctx:         p.ctx,
-							keyStorage:  p.keyStorage,
-							node:        addr,
-							token:       p.prm.common.SessionToken(),
-							bearer:      p.prm.common.BearerToken(),
-							addr:        objAddr,
-							rng:         nextRange,
-							clientCache: p.clientCache,
-							clientOpts:  p.clientOpts,
-						}
-					}
-
-					written, err := rngWriter.WriteTo(&chunkWriter{
-						ctx: p.ctx,
-						ch:  p.ch,
-					})
-					if err != nil {
-						svcutil.LogServiceError(p.log, "RANGE", addr, err)
-					}
-
-					ln := nextRange.GetLength()
-					uw := uint64(written)
-
-					p.rangeTraverser.PushSuccessSize(uw)
-					nextRange.SetLength(ln - uw)
-					nextRange.SetOffset(nextRange.GetOffset() + uw)
-				}); err != nil {
-					wg.Done()
-
-					svcutil.LogWorkerPoolError(p.log, "RANGE", err)
-
-					break loop
-				}
-
-				wg.Wait()
-
-				if nextRange.GetLength() == 0 {
-					p.traverser.SubmitSuccess()
-					break subloop
-				}
-			}
-		}
-
-		if !p.traverser.Success() {
-			// TODO: log error
-			break loop
-		}
-	}
-}
-
-func (w *chunkWriter) Write(p []byte) (int, error) {
-	select {
-	case <-w.ctx.Done():
-		return 0, w.ctx.Err()
-	case w.ch <- p:
-	}
-
-	w.written += uint64(len(p))
-
-	return len(p), nil
-}

pkg/services/object/range/v2/service.go

@@ -1,50 +0,0 @@
-package rangesvc
-
-import (
-	"context"
-
-	objectV2 "github.com/nspcc-dev/neofs-api-go/v2/object"
-	rangesvc "github.com/nspcc-dev/neofs-node/pkg/services/object/range"
-	"github.com/pkg/errors"
-)
-
-// Service implements GetRange operation of Object service v2.
-type Service struct {
-	*cfg
-}
-
-// Option represents Service constructor option.
-type Option func(*cfg)
-
-type cfg struct {
-	svc *rangesvc.Service
-}
-
-// NewService constructs Service instance from provided options.
-func NewService(opts ...Option) *Service {
-	c := new(cfg)
-
-	for i := range opts {
-		opts[i](c)
-	}
-
-	return &Service{
-		cfg: c,
-	}
-}
-
-// GetRange calls internal service and returns v2 object payload range stream.
-func (s *Service) GetRange(ctx context.Context, req *objectV2.GetRangeRequest) (objectV2.GetRangeObjectStreamer, error) {
-	r, err := s.svc.GetRange(ctx, toPrm(req))
-	if err != nil {
-		return nil, errors.Wrapf(err, "(%T) could not get object payload range data", s)
-	}
-
-	return fromResponse(r.Stream()), nil
-}
-
-func WithInternalService(v *rangesvc.Service) Option {
-	return func(c *cfg) {
-		c.svc = v
-	}
-}

pkg/services/object/range/v2/streamer.go

@@ -1,27 +0,0 @@
-package rangesvc
-
-import (
-	objectV2 "github.com/nspcc-dev/neofs-api-go/v2/object"
-	rangesvc "github.com/nspcc-dev/neofs-node/pkg/services/object/range"
-	"github.com/pkg/errors"
-)
-
-type streamer struct {
-	stream rangesvc.Streamer
-
-	body *objectV2.GetRangeResponseBody
-}
-
-func (s *streamer) Recv() (*objectV2.GetRangeResponse, error) {
-	r, err := s.stream.Recv()
-	if err != nil {
-		return nil, errors.Wrapf(err, "(%T) could not read response from stream", s)
-	}
-
-	s.body.SetChunk(r.PayloadChunk())
-
-	resp := new(objectV2.GetRangeResponse)
-	resp.SetBody(s.body)
-
-	return resp, nil
-}

pkg/services/object/range/v2/util.go

@@ -1,26 +0,0 @@
-package rangesvc
-
-import (
-	"github.com/nspcc-dev/neofs-api-go/pkg/object"
-	objectV2 "github.com/nspcc-dev/neofs-api-go/v2/object"
-	rangesvc "github.com/nspcc-dev/neofs-node/pkg/services/object/range"
-	"github.com/nspcc-dev/neofs-node/pkg/services/object/util"
-)
-
-func toPrm(req *objectV2.GetRangeRequest) *rangesvc.Prm {
-	body := req.GetBody()
-
-	return new(rangesvc.Prm).
-		WithAddress(
-			object.NewAddressFromV2(body.GetAddress()),
-		).
-		WithRange(object.NewRangeFromV2(body.GetRange())).
-		WithCommonPrm(util.CommonPrmFromV2(req))
-}
-
-func fromResponse(stream rangesvc.Streamer) objectV2.GetRangeObjectStreamer {
-	return &streamer{
-		stream: stream,
-		body:   new(objectV2.GetRangeResponseBody),
-	}
-}

pkg/services/object/rangehash/service.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"crypto/sha256"
 	"fmt"
-	"io"
 
 	"github.com/nspcc-dev/neofs-api-go/pkg"
 	"github.com/nspcc-dev/neofs-api-go/pkg/client"
@@ -14,8 +13,8 @@ import (
 	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine"
 	"github.com/nspcc-dev/neofs-node/pkg/network"
 	"github.com/nspcc-dev/neofs-node/pkg/network/cache"
+	getsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/get"
 	headsvc "github.com/nspcc-dev/neofs-node/pkg/services/object/head"
-	rangesvc "github.com/nspcc-dev/neofs-node/pkg/services/object/range"
 	objutil "github.com/nspcc-dev/neofs-node/pkg/services/object/util"
 	"github.com/nspcc-dev/neofs-node/pkg/util"
 	"github.com/nspcc-dev/neofs-node/pkg/util/logger"
@@ -44,7 +43,7 @@ type cfg struct {
 
 	headSvc *headsvc.Service
 
-	rangeSvc *rangesvc.Service
+	rangeSvc *getsvc.Service
 
 	clientCache *cache.ClientCache
 
@@ -171,23 +170,15 @@ func (s *Service) getHashes(ctx context.Context, prm *Prm, traverser *objutil.Ra
 			if prm.typ == pkg.ChecksumSHA256 && nextRng.GetLength() != rng.GetLength() {
 				// here we cannot receive SHA256 checksum through GetRangeHash service
 				// since SHA256 is not homomorphic
-				res, err := s.rangeSvc.GetRange(ctx, new(rangesvc.Prm).
+				rngPrm := getsvc.RangePrm{}
-					WithAddress(addr).
+				rngPrm.SetRange(nextRng)
-					WithRange(nextRng).
+				rngPrm.WithAddress(addr)
-					WithCommonPrm(prm.common),
+				rngPrm.SetChunkWriter(hasher)
-				)
+
+				err := s.rangeSvc.GetRange(ctx, rngPrm)
 				if err != nil {
 					return nil, errors.Wrapf(err, "(%T) could not receive payload range for %v checksum", s, prm.typ)
 				}
-
-				for stream := res.Stream(); ; {
-					resp, err := stream.Recv()
-					if errors.Is(errors.Cause(err), io.EOF) {
-						break
-					}
-
-					hasher.add(resp.PayloadChunk())
-				}
 			} else {
 				resp, err := (&distributedHasher{
 					cfg: s.cfg,
@@ -206,7 +197,7 @@ func (s *Service) getHashes(ctx context.Context, prm *Prm, traverser *objutil.Ra
 					return nil, errors.Errorf("(%T) unexpected %v hashes amount %d", s, prm.typ, ln)
 				}
 
-				hasher.add(hs[0])
+				_ = hasher.WriteChunk(hs[0])
 			}
 
 			traverser.PushSuccessSize(nextRng.GetLength())
@@ -265,7 +256,7 @@ func WithHeadService(v *headsvc.Service) Option {
 	}
 }
 
-func WithRangeService(v *rangesvc.Service) Option {
+func WithRangeService(v *getsvc.Service) Option {
 	return func(c *cfg) {
 		c.rangeSvc = v
 	}

pkg/services/object/rangehash/util.go

@@ -20,7 +20,7 @@ type onceHashWriter struct {
 }
 
 type hasher interface {
-	add([]byte)
+	WriteChunk([]byte) error
 	sum() ([]byte, error)
 }
 
@@ -36,8 +36,10 @@ type singleHasher struct {
 	hash []byte
 }
 
-func (h *singleHasher) add(p []byte) {
+func (h *singleHasher) WriteChunk(p []byte) error {
 	h.hash = p
+
+	return nil
 }
 
 func (h *singleHasher) sum() ([]byte, error) {
@@ -52,18 +54,20 @@ func (w *onceHashWriter) write(hs [][]byte) {
 	})
 }
 
-func (h *tzHasher) add(p []byte) {
+func (h *tzHasher) WriteChunk(p []byte) error {
 	h.hashes = append(h.hashes, p)
 
-	return
+	return nil
 }
 
 func (h *tzHasher) sum() ([]byte, error) {
 	return tz.Concat(h.hashes)
 }
 
-func (h *commonHasher) add(p []byte) {
+func (h *commonHasher) WriteChunk(p []byte) error {
 	h.h.Write(p)
+
+	return nil
 }
 
 func (h *commonHasher) sum() ([]byte, error) {

pkg/services/object/response.go

@@ -26,7 +26,9 @@ type getStreamResponser struct {
 }
 
 type getRangeStreamResponser struct {
-	stream *response.ServerMessageStreamer
+	util.ServerStream
+
+	respWriter util.ResponseMessageWriter
 }
 
 type putStreamResponser struct {
@@ -143,35 +145,17 @@ func (s *ResponseService) Delete(ctx context.Context, req *object.DeleteRequest)
 	return resp.(*object.DeleteResponse), nil
 }
 
-func (s *getRangeStreamResponser) Recv() (*object.GetRangeResponse, error) {
+func (s *getRangeStreamResponser) Send(resp *object.GetRangeResponse) error {
-	r, err := s.stream.Recv()
+	return s.respWriter(resp)
-	if err != nil {
-		return nil, errors.Wrapf(err, "(%T) could not receive response", s)
 }
 
-	return r.(*object.GetRangeResponse), nil
+func (s *ResponseService) GetRange(req *object.GetRangeRequest, stream GetObjectRangeStream) error {
-}
+	return s.svc.GetRange(req, &getRangeStreamResponser{
-
+		ServerStream: stream,
-func (s *ResponseService) GetRange(ctx context.Context, req *object.GetRangeRequest) (object.GetRangeObjectStreamer, error) {
+		respWriter: s.respSvc.HandleServerStreamRequest_(func(resp util.ResponseMessage) error {
-	stream, err := s.respSvc.HandleServerStreamRequest(ctx, req,
+			return stream.Send(resp.(*object.GetRangeResponse))
-		func(ctx context.Context, req interface{}) (util.ResponseMessageReader, error) {
+		}),
-			stream, err := s.svc.GetRange(ctx, req.(*object.GetRangeRequest))
+	})
-			if err != nil {
-				return nil, err
-			}
-
-			return func() (util.ResponseMessage, error) {
-				return stream.Recv()
-			}, nil
-		},
-	)
-	if err != nil {
-		return nil, err
-	}
-
-	return &getRangeStreamResponser{
-		stream: stream,
-	}, nil
 }
 
 func (s *ResponseService) GetRangeHash(ctx context.Context, req *object.GetRangeHashRequest) (*object.GetRangeHashResponse, error) {

pkg/services/object/server.go

@@ -13,6 +13,12 @@ type GetObjectStream interface {
 	Send(*object.GetResponse) error
 }
 
+// GetObjectRangeStream is an interface of NeoFS API v2 compatible payload range streamer.
+type GetObjectRangeStream interface {
+	util.ServerStream
+	Send(*object.GetRangeResponse) error
+}
+
 // ServiceServer is an interface of utility
 // serving v2 Object service.
 type ServiceServer interface {
@@ -21,6 +27,6 @@ type ServiceServer interface {
 	Head(context.Context, *object.HeadRequest) (*object.HeadResponse, error)
 	Search(context.Context, *object.SearchRequest) (object.SearchObjectStreamer, error)
 	Delete(context.Context, *object.DeleteRequest) (*object.DeleteResponse, error)
-	GetRange(context.Context, *object.GetRangeRequest) (object.GetRangeObjectStreamer, error)
+	GetRange(*object.GetRangeRequest, GetObjectRangeStream) error
 	GetRangeHash(context.Context, *object.GetRangeHashRequest) (*object.GetRangeHashResponse, error)
 }

pkg/services/object/sign.go

@@ -32,7 +32,9 @@ type putStreamSigner struct {
 }
 
 type getRangeStreamSigner struct {
-	stream *util.ResponseMessageStreamer
+	util.ServerStream
+
+	respWriter util.ResponseMessageWriter
 }
 
 func NewSignService(key *ecdsa.PrivateKey, svc ServiceServer) *SignService {
@@ -151,35 +153,24 @@ func (s *SignService) Delete(ctx context.Context, req *object.DeleteRequest) (*o
 	return resp.(*object.DeleteResponse), nil
 }
 
-func (s *getRangeStreamSigner) Recv() (*object.GetRangeResponse, error) {
+func (s *getRangeStreamSigner) Send(resp *object.GetRangeResponse) error {
-	r, err := s.stream.Recv()
+	return s.respWriter(resp)
-	if err != nil {
-		return nil, errors.Wrap(err, "could not receive response")
 }
 
-	return r.(*object.GetRangeResponse), nil
+func (s *SignService) GetRange(req *object.GetRangeRequest, stream GetObjectRangeStream) error {
-}
+	respWriter, err := s.sigSvc.HandleServerStreamRequest_(req,
-
+		func(resp util.ResponseMessage) error {
-func (s *SignService) GetRange(ctx context.Context, req *object.GetRangeRequest) (object.GetRangeObjectStreamer, error) {
+			return stream.Send(resp.(*object.GetRangeResponse))
-	stream, err := s.sigSvc.HandleServerStreamRequest(ctx, req,
-		func(ctx context.Context, req interface{}) (util.ResponseMessageReader, error) {
-			stream, err := s.svc.GetRange(ctx, req.(*object.GetRangeRequest))
-			if err != nil {
-				return nil, err
-			}
-
-			return func() (util.ResponseMessage, error) {
-				return stream.Recv()
-			}, nil
 		},
 	)
 	if err != nil {
-		return nil, err
+		return err
 	}
 
-	return &getRangeStreamSigner{
+	return s.svc.GetRange(req, &getRangeStreamSigner{
-		stream: stream,
+		ServerStream: stream,
-	}, nil
+		respWriter:   respWriter,
+	})
 }
 
 func (s *SignService) GetRangeHash(ctx context.Context, req *object.GetRangeHashRequest) (*object.GetRangeHashResponse, error) {

pkg/services/object/transport_splitter.go

@@ -37,10 +37,11 @@ type (
 		addrAmount uint64
 	}
 
-	rangeStreamBasicChecker struct {
+	rangeStreamMsgSizeCtrl struct {
-		next      object.GetRangeObjectStreamer
+		util.ServerStream
-		buf       *bytes.Buffer
+
-		resp      *object.GetRangeResponse
+		stream GetObjectRangeStream
+
 		chunkSize int
 	}
 )
@@ -112,46 +113,47 @@ func (c TransportSplitter) Delete(ctx context.Context, request *object.DeleteReq
 	return c.next.Delete(ctx, request)
 }
 
-func (c TransportSplitter) GetRange(ctx context.Context, request *object.GetRangeRequest) (object.GetRangeObjectStreamer, error) {
+func (s *rangeStreamMsgSizeCtrl) Send(resp *object.GetRangeResponse) error {
-	stream, err := c.next.GetRange(ctx, request)
+	body := resp.GetBody()
 
-	return &rangeStreamBasicChecker{
+	chunkPart, ok := body.GetRangePart().(*object.GetRangePartChunk)
-		next:      stream,
+	if !ok {
+		return s.stream.Send(resp)
+	}
+
+	var newResp *object.GetRangeResponse
+
+	for buf := bytes.NewBuffer(chunkPart.GetChunk()); buf.Len() > 0; {
+		if newResp == nil {
+			newResp = new(object.GetRangeResponse)
+			newResp.SetBody(body)
+		}
+
+		chunkPart.SetChunk(buf.Next(s.chunkSize))
+		body.SetRangePart(chunkPart)
+		newResp.SetMetaHeader(resp.GetMetaHeader())
+		newResp.SetVerificationHeader(resp.GetVerificationHeader())
+
+		if err := s.stream.Send(newResp); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (c TransportSplitter) GetRange(req *object.GetRangeRequest, stream GetObjectRangeStream) error {
+	return c.next.GetRange(req, &rangeStreamMsgSizeCtrl{
+		ServerStream: stream,
+		stream:       stream,
 		chunkSize:    int(c.chunkSize),
-	}, err
+	})
 }
 
 func (c TransportSplitter) GetRangeHash(ctx context.Context, request *object.GetRangeHashRequest) (*object.GetRangeHashResponse, error) {
 	return c.next.GetRangeHash(ctx, request)
 }
 
-func (r *rangeStreamBasicChecker) Recv() (*object.GetRangeResponse, error) {
-	if r.resp == nil {
-		resp, err := r.next.Recv()
-		if err != nil {
-			return resp, err
-		}
-
-		r.resp = resp
-		r.buf = bytes.NewBuffer(resp.GetBody().GetChunk())
-	}
-
-	body := new(object.GetRangeResponseBody)
-	body.SetChunk(r.buf.Next(r.chunkSize))
-
-	resp := new(object.GetRangeResponse)
-	resp.SetVerificationHeader(r.resp.GetVerificationHeader())
-	resp.SetMetaHeader(r.resp.GetMetaHeader())
-	resp.SetBody(body)
-
-	if r.buf.Len() == 0 {
-		r.buf = nil
-		r.resp = nil
-	}
-
-	return resp, nil
-}
-
 func (s *searchStreamBasicChecker) Recv() (*object.SearchResponse, error) {
 	if s.resp == nil {
 		resp, err := s.next.Recv()