[#1307] cli: Make cli process object.patch

Signed-off-by: Airat Arifullin <a.arifullin@yadro.com>

cmd/frostfs-cli/internal/client/client.go

@@ -2,10 +2,13 @@ package internal
 
 import (
 	"bytes"
+	"cmp"
 	"context"
 	"errors"
 	"fmt"
 	"io"
+	"os"
+	"slices"
 	"sort"
 	"strings"
 
@@ -869,3 +872,65 @@ func SyncContainerSettings(ctx context.Context, prm SyncContainerPrm) (*SyncCont
 
 	return new(SyncContainerRes), nil
 }
+
+// PatchObjectPrm groups parameters of PatchObject operation.
+type PatchObjectPrm struct {
+	commonObjectPrm
+	objectAddressPrm
+
+	NewAttributes []objectSDK.Attribute
+
+	ReplaceAttribute bool
+
+	PayloadPatches []PayloadPatch
+}
+
+type PayloadPatch struct {
+	Range objectSDK.Range
+
+	PayloadPath string
+}
+
+type PatchRes struct {
+	OID oid.ID
+}
+
+func Patch(ctx context.Context, prm PatchObjectPrm) (*PatchRes, error) {
+	patchPrm := client.PrmObjectPatch{
+		XHeaders:    prm.xHeaders,
+		BearerToken: prm.bearerToken,
+		Session:     prm.sessionToken,
+		Address:     prm.objAddr,
+	}
+
+	slices.SortFunc(prm.PayloadPatches, func(a, b PayloadPatch) int {
+		return cmp.Compare(a.Range.GetOffset(), b.Range.GetOffset())
+	})
+
+	patcher, err := prm.cli.ObjectPatchInit(ctx, patchPrm)
+	if err != nil {
+		return nil, fmt.Errorf("init payload reading: %w", err)
+	}
+
+	if patcher.PatchAttributes(ctx, prm.NewAttributes, prm.ReplaceAttribute) {
+		for _, pp := range prm.PayloadPatches {
+			payloadFile, err := os.OpenFile(pp.PayloadPath, os.O_RDONLY, os.ModePerm)
+			if err != nil {
+				return nil, err
+			}
+			applied := patcher.PatchPayload(ctx, &pp.Range, payloadFile)
+			_ = payloadFile.Close()
+			if !applied {
+				break
+			}
+		}
+	}
+
+	res, err := patcher.Close(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return &PatchRes{
+		OID: res.ObjectID(),
+	}, nil
+}

cmd/frostfs-cli/modules/object/patch.go

@@ -0,0 +1,151 @@
+package object
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+
+	internalclient "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/client"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/commonflags"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/key"
+	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"github.com/spf13/cobra"
+)
+
+const (
+	newAttrsFlagName     = "new-attrs"
+	replaceAttrsFlagName = "replace-attrs"
+	rangeFlagName        = "range"
+	payloadFlagName      = "payload"
+)
+
+var objectPatchCmd = &cobra.Command{
+	Use:   "patch",
+	Run:   patch,
+	Short: "Patch FrostFS object",
+	Long:  "Patch FrostFS object. Each range passed to the command requires to pass a corresponding patch payload.",
+	Example: `
+frostfs-cli -c config.yml -r 127.0.0.1:8080 object patch --cid <CID> --oid <OID> --new-attrs 'key1=val1,key2=val2' --replace-attrs
+frostfs-cli -c config.yml -r 127.0.0.1:8080 object patch --cid <CID> --oid <OID> --range offX:lnX --payload /path/to/payloadX --range offY:lnY --payload /path/to/payloadY
+frostfs-cli -c config.yml -r 127.0.0.1:8080 object patch --cid <CID> --oid <OID> --new-attrs 'key1=val1,key2=val2' --replace-attrs --range offX:lnX --payload /path/to/payload
+`,
+}
+
+func initObjectPatchCmd() {
+	commonflags.Init(objectPatchCmd)
+	initFlagSession(objectPatchCmd, "PATCH")
+
+	flags := objectPatchCmd.Flags()
+
+	flags.String(commonflags.CIDFlag, "", commonflags.CIDFlagUsage)
+	_ = objectRangeCmd.MarkFlagRequired(commonflags.CIDFlag)
+
+	flags.String(commonflags.OIDFlag, "", commonflags.OIDFlagUsage)
+	_ = objectRangeCmd.MarkFlagRequired(commonflags.OIDFlag)
+
+	flags.String(newAttrsFlagName, "", "New object attributes in form of Key1=Value1,Key2=Value2")
+	flags.Bool(replaceAttrsFlagName, false, "Replace object attributes by new ones.")
+	flags.StringSlice(rangeFlagName, []string{}, "Range to which patch payload is applied. Format: offset:length")
+	flags.StringSlice(payloadFlagName, []string{}, "Path to file with patch payload.")
+}
+
+func patch(cmd *cobra.Command, _ []string) {
+	var cnr cid.ID
+	var obj oid.ID
+
+	objAddr := readObjectAddress(cmd, &cnr, &obj)
+
+	ranges, err := getRangeSlice(cmd)
+	commonCmd.ExitOnErr(cmd, "", err)
+
+	payloads := patchPayloadPaths(cmd)
+
+	if len(ranges) != len(payloads) {
+		commonCmd.ExitOnErr(cmd, "", fmt.Errorf("the number of ranges and payloads are not equal: ranges = %d, payloads = %d", len(ranges), len(payloads)))
+	}
+
+	newAttrs, err := parseNewObjectAttrs(cmd)
+	commonCmd.ExitOnErr(cmd, "can't parse new object attributes: %w", err)
+	replaceAttrs, _ := cmd.Flags().GetBool(replaceAttrsFlagName)
+
+	pk := key.GetOrGenerate(cmd)
+
+	cli := internalclient.GetSDKClientByFlag(cmd, pk, commonflags.RPC)
+
+	var prm internalclient.PatchObjectPrm
+	prm.SetClient(cli)
+	Prepare(cmd, &prm)
+	ReadOrOpenSession(cmd, &prm, pk, cnr, nil)
+
+	prm.SetAddress(objAddr)
+	prm.NewAttributes = newAttrs
+	prm.ReplaceAttribute = replaceAttrs
+
+	for i := range ranges {
+		prm.PayloadPatches = append(prm.PayloadPatches, internalclient.PayloadPatch{
+			Range:       ranges[i],
+			PayloadPath: payloads[i],
+		})
+	}
+
+	res, err := internalclient.Patch(cmd.Context(), prm)
+	if err != nil {
+		commonCmd.ExitOnErr(cmd, "can't patch the object: %w", err)
+	}
+	cmd.Println("Patched object ID: ", res.OID.EncodeToString())
+}
+
+func parseNewObjectAttrs(cmd *cobra.Command) ([]objectSDK.Attribute, error) {
+	var rawAttrs []string
+
+	raw := cmd.Flag(newAttrsFlagName).Value.String()
+	if len(raw) != 0 {
+		rawAttrs = strings.Split(raw, ",")
+	}
+
+	attrs := make([]objectSDK.Attribute, len(rawAttrs), len(rawAttrs)+2) // name + timestamp attributes
+	for i := range rawAttrs {
+		k, v, found := strings.Cut(rawAttrs[i], "=")
+		if !found {
+			return nil, fmt.Errorf("invalid attribute format: %s", rawAttrs[i])
+		}
+		attrs[i].SetKey(k)
+		attrs[i].SetValue(v)
+	}
+	return attrs, nil
+}
+
+func getRangeSlice(cmd *cobra.Command) ([]objectSDK.Range, error) {
+	v, _ := cmd.Flags().GetStringSlice(rangeFlagName)
+	if len(v) == 0 {
+		return []objectSDK.Range{}, nil
+	}
+	rs := make([]objectSDK.Range, len(v))
+	for i := range v {
+		before, after, found := strings.Cut(v[i], rangeSep)
+		if !found {
+			return nil, fmt.Errorf("invalid range specifier: %s", v[i])
+		}
+
+		offset, err := strconv.ParseUint(before, 10, 64)
+		if err != nil {
+			return nil, fmt.Errorf("invalid '%s' range offset specifier: %w", v[i], err)
+		}
+		length, err := strconv.ParseUint(after, 10, 64)
+		if err != nil {
+			return nil, fmt.Errorf("invalid '%s' range length specifier: %w", v[i], err)
+		}
+
+		rs[i].SetOffset(offset)
+		rs[i].SetLength(length)
+	}
+	return rs, nil
+}
+
+func patchPayloadPaths(cmd *cobra.Command) []string {
+	v, _ := cmd.Flags().GetStringSlice(payloadFlagName)
+	return v
+}

cmd/frostfs-cli/modules/object/root.go

@@ -29,6 +29,7 @@ func init() {
 		objectRangeCmd,
 		objectLockCmd,
 		objectNodesCmd,
+		objectPatchCmd,
 	}
 
 	Cmd.AddCommand(objectChildCommands...)
@@ -39,6 +40,7 @@ func init() {
 	}
 
 	initObjectPutCmd()
+	initObjectPatchCmd()
 	initObjectDeleteCmd()
 	initObjectGetCmd()
 	initObjectSearchCmd()

cmd/frostfs-cli/modules/object/util.go

@@ -306,6 +306,8 @@ func finalizeSession(cmd *cobra.Command, dst SessionPrm, tok *session.Object, ke
 	case *internal.PutObjectPrm:
 		common.PrintVerbose(cmd, "Binding session to object PUT...")
 		tok.ForVerb(session.VerbObjectPut)
+	case *internal.PatchObjectPrm:
+		tok.ForVerb(session.VerbObjectPatch)
 	case *internal.DeleteObjectPrm:
 		common.PrintVerbose(cmd, "Binding session to object DELETE...")
 		tok.ForVerb(session.VerbObjectDelete)

cmd/frostfs-cli/modules/util/ape.go

@@ -239,6 +239,8 @@ func parseAction(lexeme string) ([]string, bool, error) {
 		return []string{nativeschema.MethodRangeObject}, true, nil
 	case "object.hash":
 		return []string{nativeschema.MethodHashObject}, true, nil
+	case "object.patch":
+		return []string{nativeschema.MethodPatchObject}, true, nil
 	case "object.*":
 		return []string{
 			nativeschema.MethodPutObject,
@@ -248,6 +250,7 @@ func parseAction(lexeme string) ([]string, bool, error) {
 			nativeschema.MethodSearchObject,
 			nativeschema.MethodRangeObject,
 			nativeschema.MethodHashObject,
+			nativeschema.MethodPatchObject,
 		}, true, nil
 	case "container.put":
 		return []string{nativeschema.MethodPutContainer}, false, nil

cmd/frostfs-node/object.go

@@ -28,6 +28,7 @@ import (
 	deletesvcV2 "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/delete/v2"
 	getsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/get"
 	getsvcV2 "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/get/v2"
+	patchsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/patch"
 	putsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/put"
 	putsvcV2 "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/put/v2"
 	searchsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/search"
@@ -54,6 +55,8 @@ type objectSvc struct {
 	get *getsvcV2.Service
 
 	delete *deletesvcV2.Service
+
+	patch *patchsvc.Service
 }
 
 func (c *cfg) MaxObjectSize() uint64 {
@@ -71,6 +74,10 @@ func (s *objectSvc) Put() (objectService.PutObjectStream, error) {
 	return s.put.Put()
 }
 
+func (s *objectSvc) Patch() (objectService.PatchObjectStream, error) {
+	return s.patch.Patch()
+}
+
 func (s *objectSvc) PutSingle(ctx context.Context, req *object.PutSingleRequest) (*object.PutSingleResponse, error) {
 	return s.put.PutSingle(ctx, req)
 }
@@ -181,10 +188,12 @@ func initObjectService(c *cfg) {
 
 	sDeleteV2 := createDeleteServiceV2(sDelete)
 
+	sPatch := createPatchSvc(sGet, sPut, keyStorage)
+
 	// build service pipeline
 	// grpc | audit | <metrics> | signature | response | acl | ape | split
 
-	splitSvc := createSplitService(c, sPutV2, sGetV2, sSearchV2, sDeleteV2)
+	splitSvc := createSplitService(c, sPutV2, sGetV2, sSearchV2, sDeleteV2, sPatch)
 
 	apeSvc := createAPEService(c, splitSvc)
 
@@ -353,6 +362,10 @@ func createPutSvcV2(sPut *putsvc.Service, keyStorage *util.KeyStorage) *putsvcV2
 	return putsvcV2.NewService(sPut, keyStorage)
 }
 
+func createPatchSvc(sGet *getsvc.Service, sPut *putsvc.Service, keyStorage *util.KeyStorage) *patchsvc.Service {
+	return patchsvc.NewService(keyStorage, sGet, sPut)
+}
+
 func createSearchSvc(c *cfg, keyStorage *util.KeyStorage, traverseGen *util.TraverserGenerator, coreConstructor *cache.ClientCache) *searchsvc.Service {
 	ls := c.cfgObject.cfgLocalStorage.localStorage
 
@@ -425,7 +438,7 @@ func createDeleteServiceV2(sDelete *deletesvc.Service) *deletesvcV2.Service {
 }
 
 func createSplitService(c *cfg, sPutV2 *putsvcV2.Service, sGetV2 *getsvcV2.Service,
-	sSearchV2 *searchsvcV2.Service, sDeleteV2 *deletesvcV2.Service,
+	sSearchV2 *searchsvcV2.Service, sDeleteV2 *deletesvcV2.Service, sPatch *patchsvc.Service,
 ) *objectService.TransportSplitter {
 	return objectService.NewTransportSplitter(
 		c.cfgGRPC.maxChunkSize,
@@ -435,6 +448,7 @@ func createSplitService(c *cfg, sPutV2 *putsvcV2.Service, sGetV2 *getsvcV2.Servi
 			search: sSearchV2,
 			get:    sGetV2,
 			delete: sDeleteV2,
+			patch:  sPatch,
 		},
 	)
 }

go.mod

@@ -4,14 +4,14 @@ go 1.21
 
 require (
 	code.gitea.io/sdk/gitea v0.17.1
-	git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.16.1-0.20240726072425-3dfa2f4fd65e
+	git.frostfs.info/TrueCloudLab/frostfs-api-go/v2 v2.16.1-0.20240813155151-d112a28d382f
 	git.frostfs.info/TrueCloudLab/frostfs-contract v0.19.3-0.20240621131249-49e5270f673e
 	git.frostfs.info/TrueCloudLab/frostfs-crypto v0.6.0
 	git.frostfs.info/TrueCloudLab/frostfs-locode-db v0.4.1-0.20240710074952-65761deb5c0d
 	git.frostfs.info/TrueCloudLab/frostfs-observability v0.0.0-20231101111734-b3ad3335ff65
-	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20240726111349-9da46f566fec
+	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20240813155821-98aabc45a720
 	git.frostfs.info/TrueCloudLab/hrw v1.2.1
-	git.frostfs.info/TrueCloudLab/policy-engine v0.0.0-20240712081403-2628f6184984
+	git.frostfs.info/TrueCloudLab/policy-engine v0.0.0-20240814080254-96225afacb88
 	git.frostfs.info/TrueCloudLab/tzhash v1.8.0
 	git.frostfs.info/TrueCloudLab/zapjournald v0.0.0-20240124114243-cb2e66427d02
 	github.com/cheggaaa/pb v1.0.29

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

@@ -24,6 +24,48 @@ func New(c objectSvc.ServiceServer) *Server {
 	}
 }
 
+// Patch opens internal Object patch stream and feeds it by the data read from gRPC stream.
+func (s *Server) Patch(gStream objectGRPC.ObjectService_PatchServer) error {
+	stream, err := s.srv.Patch()
+	if err != nil {
+		return err
+	}
+
+	for {
+		req, err := gStream.Recv()
+		if err != nil {
+			if errors.Is(err, io.EOF) {
+				resp, err := stream.CloseAndRecv(gStream.Context())
+				if err != nil {
+					return err
+				}
+
+				return gStream.SendAndClose(resp.ToGRPCMessage().(*objectGRPC.PatchResponse))
+			}
+
+			return err
+		}
+
+		patchReq := new(object.PatchRequest)
+		if err := patchReq.FromGRPCMessage(req); err != nil {
+			return err
+		}
+
+		if err := stream.Send(gStream.Context(), patchReq); err != nil {
+			if errors.Is(err, util.ErrAbortStream) {
+				resp, err := stream.CloseAndRecv(gStream.Context())
+				if err != nil {
+					return err
+				}
+
+				return gStream.SendAndClose(resp.ToGRPCMessage().(*objectGRPC.PatchResponse))
+			}
+
+			return err
+		}
+	}
+}
+
 // Put opens internal Object service Put stream and overtakes data from gRPC stream to it.
 func (s *Server) Put(gStream objectGRPC.ObjectService_PutServer) error {
 	stream, err := s.srv.Put()

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

@@ -35,6 +35,12 @@ type putStreamBasicChecker struct {
 	next   object.PutObjectStream
 }
 
+type patchStreamBasicChecker struct {
+	source       *Service
+	next         object.PatchObjectStream
+	nonFirstSend bool
+}
+
 type getStreamBasicChecker struct {
 	checker ACLChecker
 
@@ -249,6 +255,15 @@ func (b Service) Put() (object.PutObjectStream, error) {
 	}, err
 }
 
+func (b Service) Patch() (object.PatchObjectStream, error) {
+	streamer, err := b.next.Patch()
+
+	return &patchStreamBasicChecker{
+		source: &b,
+		next:   streamer,
+	}, err
+}
+
 func (b Service) Head(
 	ctx context.Context,
 	request *objectV2.HeadRequest,
@@ -734,6 +749,65 @@ func (g *searchStreamBasicChecker) Send(resp *objectV2.SearchResponse) error {
 	return g.SearchStream.Send(resp)
 }
 
+func (p *patchStreamBasicChecker) Send(ctx context.Context, request *objectV2.PatchRequest) error {
+	body := request.GetBody()
+	if body == nil {
+		return errEmptyBody
+	}
+
+	if !p.nonFirstSend {
+		p.nonFirstSend = true
+
+		cnr, err := getContainerIDFromRequest(request)
+		if err != nil {
+			return err
+		}
+
+		objV2 := request.GetBody().GetAddress().GetObjectID()
+		if objV2 == nil {
+			return errors.New("missing oid")
+		}
+		obj := new(oid.ID)
+		err = obj.ReadFromV2(*objV2)
+		if err != nil {
+			return err
+		}
+
+		var sTok *sessionSDK.Object
+		sTok, err = readSessionToken(cnr, obj, request.GetMetaHeader().GetSessionToken())
+		if err != nil {
+			return err
+		}
+
+		bTok, err := originalBearerToken(request.GetMetaHeader())
+		if err != nil {
+			return err
+		}
+
+		req := MetaWithToken{
+			vheader: request.GetVerificationHeader(),
+			token:   sTok,
+			bearer:  bTok,
+			src:     request,
+		}
+
+		reqInfo, err := p.source.findRequestInfoWithoutACLOperationAssert(req, cnr)
+		if err != nil {
+			return err
+		}
+
+		reqInfo.obj = obj
+
+		ctx = requestContext(ctx, reqInfo)
+	}
+
+	return p.next.Send(ctx, request)
+}
+
+func (p patchStreamBasicChecker) CloseAndRecv(ctx context.Context) (*objectV2.PatchResponse, error) {
+	return p.next.CloseAndRecv(ctx)
+}
+
 func (b Service) findRequestInfo(req MetaWithToken, idCnr cid.ID, op acl.Op) (info RequestInfo, err error) {
 	cnr, err := b.containers.Get(idCnr) // fetch actual container
 	if err != nil {
@@ -790,3 +864,56 @@ func (b Service) findRequestInfo(req MetaWithToken, idCnr cid.ID, op acl.Op) (in
 
 	return info, nil
 }
+
+// findRequestInfoWithoutACLOperationAssert is findRequestInfo without session token verb assert.
+func (b Service) findRequestInfoWithoutACLOperationAssert(req MetaWithToken, idCnr cid.ID) (info RequestInfo, err error) {
+	cnr, err := b.containers.Get(idCnr) // fetch actual container
+	if err != nil {
+		return info, err
+	}
+
+	if req.token != nil {
+		currentEpoch, err := b.nm.Epoch()
+		if err != nil {
+			return info, errors.New("can't fetch current epoch")
+		}
+		if req.token.ExpiredAt(currentEpoch) {
+			return info, new(apistatus.SessionTokenExpired)
+		}
+		if req.token.InvalidAt(currentEpoch) {
+			return info, fmt.Errorf("%s: token is invalid at %d epoch)",
+				invalidRequestMessage, currentEpoch)
+		}
+	}
+
+	// find request role and key
+	ownerID, ownerKey, err := req.RequestOwner()
+	if err != nil {
+		return info, err
+	}
+	res, err := b.c.Classify(ownerID, ownerKey, idCnr, cnr.Value)
+	if err != nil {
+		return info, err
+	}
+
+	info.basicACL = cnr.Value.BasicACL()
+	info.requestRole = res.Role
+	info.cnrOwner = cnr.Value.Owner()
+	info.idCnr = idCnr
+
+	cnrNamespace, hasNamespace := strings.CutSuffix(cnrSDK.ReadDomain(cnr.Value).Zone(), ".ns")
+	if hasNamespace {
+		info.cnrNamespace = cnrNamespace
+	}
+
+	// it is assumed that at the moment the key will be valid,
+	// otherwise the request would not pass validation
+	info.senderKey = res.Key
+
+	// add bearer token if it is present in request
+	info.bearer = req.bearer
+
+	info.srcRequest = req.src
+
+	return info, nil
+}

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

@@ -46,6 +46,8 @@ func getContainerIDFromRequest(req any) (cid.ID, error) {
 		idV2 = v.GetBody().GetAddress().GetContainerID()
 	case *objectV2.PutSingleRequest:
 		idV2 = v.GetBody().GetObject().GetHeader().GetContainerID()
+	case *objectV2.PatchRequest:
+		idV2 = v.GetBody().GetAddress().GetContainerID()
 	default:
 		return cid.ID{}, errors.New("unknown request type")
 	}
@@ -174,7 +176,7 @@ func isOwnerFromKey(id user.ID, key *keys.PublicKey) bool {
 func assertVerb(tok sessionSDK.Object, op acl.Op) bool {
 	switch op {
 	case acl.OpObjectPut:
-		return tok.AssertVerb(sessionSDK.VerbObjectPut, sessionSDK.VerbObjectDelete)
+		return tok.AssertVerb(sessionSDK.VerbObjectPut, sessionSDK.VerbObjectDelete, sessionSDK.VerbObjectPatch)
 	case acl.OpObjectDelete:
 		return tok.AssertVerb(sessionSDK.VerbObjectDelete)
 	case acl.OpObjectGet:
@@ -185,11 +187,13 @@ func assertVerb(tok sessionSDK.Object, op acl.Op) bool {
 			sessionSDK.VerbObjectGet,
 			sessionSDK.VerbObjectDelete,
 			sessionSDK.VerbObjectRange,
-			sessionSDK.VerbObjectRangeHash)
+			sessionSDK.VerbObjectRangeHash,
+			sessionSDK.VerbObjectPatch,
+		)
 	case acl.OpObjectSearch:
 		return tok.AssertVerb(sessionSDK.VerbObjectSearch, sessionSDK.VerbObjectDelete)
 	case acl.OpObjectRange:
-		return tok.AssertVerb(sessionSDK.VerbObjectRange, sessionSDK.VerbObjectRangeHash)
+		return tok.AssertVerb(sessionSDK.VerbObjectRange, sessionSDK.VerbObjectRangeHash, sessionSDK.VerbObjectPatch)
 	case acl.OpObjectHash:
 		return tok.AssertVerb(sessionSDK.VerbObjectRangeHash)
 	}

pkg/services/object/ape/request.go

@@ -103,7 +103,8 @@ func (c *checkerImpl) newAPERequest(ctx context.Context, prm Prm) (aperequest.Re
 		nativeschema.MethodHeadObject,
 		nativeschema.MethodRangeObject,
 		nativeschema.MethodHashObject,
-		nativeschema.MethodDeleteObject:
+		nativeschema.MethodDeleteObject,
+		nativeschema.MethodPatchObject:
 		if prm.Object == nil {
 			return defaultRequest, fmt.Errorf("method %s: %w", prm.Method, errMissingOID)
 		}

pkg/services/object/ape/service.go

@@ -204,6 +204,62 @@ func (c *Service) Put() (objectSvc.PutObjectStream, error) {
 	}, err
 }
 
+type patchStreamBasicChecker struct {
+	apeChecker Checker
+
+	next objectSvc.PatchObjectStream
+
+	nonFirstSend bool
+}
+
+func (p *patchStreamBasicChecker) Send(ctx context.Context, request *objectV2.PatchRequest) error {
+	if !p.nonFirstSend {
+		p.nonFirstSend = true
+
+		reqCtx, err := requestContext(ctx)
+		if err != nil {
+			return toStatusErr(err)
+		}
+
+		cnrID, objID, err := getAddressParamsSDK(request.GetBody().GetAddress().GetContainerID(), request.GetBody().GetAddress().GetObjectID())
+		if err != nil {
+			return toStatusErr(err)
+		}
+
+		prm := Prm{
+			Namespace:      reqCtx.Namespace,
+			Container:      cnrID,
+			Object:         objID,
+			Method:         nativeschema.MethodPatchObject,
+			SenderKey:      hex.EncodeToString(reqCtx.SenderKey),
+			ContainerOwner: reqCtx.ContainerOwner,
+			Role:           nativeSchemaRole(reqCtx.Role),
+			SoftAPECheck:   reqCtx.SoftAPECheck,
+			BearerToken:    reqCtx.BearerToken,
+			XHeaders:       request.GetMetaHeader().GetXHeaders(),
+		}
+
+		if err := p.apeChecker.CheckAPE(ctx, prm); err != nil {
+			return toStatusErr(err)
+		}
+	}
+
+	return p.next.Send(ctx, request)
+}
+
+func (p patchStreamBasicChecker) CloseAndRecv(ctx context.Context) (*objectV2.PatchResponse, error) {
+	return p.next.CloseAndRecv(ctx)
+}
+
+func (c *Service) Patch() (objectSvc.PatchObjectStream, error) {
+	streamer, err := c.next.Patch()
+
+	return &patchStreamBasicChecker{
+		apeChecker: c.apeChecker,
+		next:       streamer,
+	}, err
+}
+
 func (c *Service) Head(ctx context.Context, request *objectV2.HeadRequest) (*objectV2.HeadResponse, error) {
 	cnrID, objID, err := getAddressParamsSDK(request.GetBody().GetAddress().GetContainerID(), request.GetBody().GetAddress().GetObjectID())
 	if err != nil {

pkg/services/object/audit.go

@@ -170,3 +170,64 @@ func (a *auditPutStream) Send(ctx context.Context, req *object.PutRequest) error
 	}
 	return err
 }
+
+type auditPatchStream struct {
+	stream PatchObjectStream
+	log    *logger.Logger
+
+	failed      bool
+	key         []byte
+	containerID *refs.ContainerID
+	objectID    *refs.ObjectID
+
+	nonFirstSend bool
+}
+
+func (a *auditService) Patch() (PatchObjectStream, error) {
+	res, err := a.next.Patch()
+	if !a.enabled.Load() {
+		return res, err
+	}
+	if err != nil {
+		audit.LogRequest(a.log, objectGRPC.ObjectService_Patch_FullMethodName, nil, nil, false)
+		return res, err
+	}
+	return &auditPatchStream{
+		stream: res,
+		log:    a.log,
+	}, nil
+}
+
+// CloseAndRecv implements PatchObjectStream.
+func (a *auditPatchStream) CloseAndRecv(ctx context.Context) (*object.PatchResponse, error) {
+	resp, err := a.stream.CloseAndRecv(ctx)
+	if err != nil {
+		a.failed = true
+	}
+	a.objectID = resp.GetBody().ObjectID
+	audit.LogRequestWithKey(a.log, objectGRPC.ObjectService_Patch_FullMethodName, a.key,
+		audit.TargetFromContainerIDObjectID(a.containerID, a.objectID),
+		!a.failed)
+	return resp, err
+}
+
+// Send implements PatchObjectStream.
+func (a *auditPatchStream) Send(ctx context.Context, req *object.PatchRequest) error {
+	if !a.nonFirstSend {
+		a.containerID = req.GetBody().GetAddress().GetContainerID()
+		a.objectID = req.GetBody().GetAddress().GetObjectID()
+		a.key = req.GetVerificationHeader().GetBodySignature().GetKey()
+		a.nonFirstSend = true
+	}
+
+	err := a.stream.Send(ctx, req)
+	if err != nil {
+		a.failed = true
+	}
+	if !errors.Is(err, util.ErrAbortStream) { // CloseAndRecv will not be called, so log here
+		audit.LogRequestWithKey(a.log, objectGRPC.ObjectService_Patch_FullMethodName, a.key,
+			audit.TargetFromContainerIDObjectID(a.containerID, a.objectID),
+			!a.failed)
+	}
+	return err
+}

pkg/services/object/common.go

@@ -48,6 +48,14 @@ func (x *Common) Put() (PutObjectStream, error) {
 	return x.nextHandler.Put()
 }
 
+func (x *Common) Patch() (PatchObjectStream, error) {
+	if x.state.IsMaintenance() {
+		return nil, new(apistatus.NodeUnderMaintenance)
+	}
+
+	return x.nextHandler.Patch()
+}
+
 func (x *Common) Head(ctx context.Context, req *objectV2.HeadRequest) (*objectV2.HeadResponse, error) {
 	if x.state.IsMaintenance() {
 		return nil, new(apistatus.NodeUnderMaintenance)

pkg/services/object/get/prm.go

@@ -124,6 +124,10 @@ func (p *commonPrm) SetRequestForwarder(f RequestForwarder) {
 	p.forwarder = f
 }
 
+func (p *commonPrm) SetSignerKey(signerKey *ecdsa.PrivateKey) {
+	p.signerKey = signerKey
+}
+
 // WithAddress sets object address to be read.
 func (p *commonPrm) WithAddress(addr oid.Address) {
 	p.addr = addr

pkg/services/object/metrics.go

@@ -27,6 +27,12 @@ type (
 		start   time.Time
 	}
 
+	patchStreamMetric struct {
+		stream  PatchObjectStream
+		metrics MetricRegister
+		start   time.Time
+	}
+
 	MetricRegister interface {
 		AddRequestDuration(string, time.Duration, bool)
 		AddPayloadSize(string, int)
@@ -76,6 +82,24 @@ func (m MetricCollector) Put() (PutObjectStream, error) {
 	return m.next.Put()
 }
 
+func (m MetricCollector) Patch() (PatchObjectStream, error) {
+	if m.enabled {
+		t := time.Now()
+
+		stream, err := m.next.Patch()
+		if err != nil {
+			return nil, err
+		}
+
+		return &patchStreamMetric{
+			stream:  stream,
+			metrics: m.metrics,
+			start:   t,
+		}, nil
+	}
+	return m.next.Patch()
+}
+
 func (m MetricCollector) PutSingle(ctx context.Context, request *object.PutSingleRequest) (*object.PutSingleResponse, error) {
 	if m.enabled {
 		t := time.Now()
@@ -189,3 +213,16 @@ func (s putStreamMetric) CloseAndRecv(ctx context.Context) (*object.PutResponse,
 
 	return res, err
 }
+func (s patchStreamMetric) Send(ctx context.Context, req *object.PatchRequest) error {
+	s.metrics.AddPayloadSize("Patch", len(req.GetBody().GetPatch().GetChunk()))
+
+	return s.stream.Send(ctx, req)
+}
+
+func (s patchStreamMetric) CloseAndRecv(ctx context.Context) (*object.PatchResponse, error) {
+	res, err := s.stream.CloseAndRecv(ctx)
+
+	s.metrics.AddRequestDuration("Patch", time.Since(s.start), err == nil)
+
+	return res, err
+}

pkg/services/object/patch/range_provider.go

@@ -0,0 +1,63 @@
+package patchsvc
+
+import (
+	"context"
+	"crypto/ecdsa"
+	"io"
+
+	getsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/get"
+	objectUtil "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
+	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	patcherSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/patcher"
+)
+
+func (p *pipeChunkWriter) WriteChunk(_ context.Context, chunk []byte) error {
+	_, err := p.wr.Write(chunk)
+	return err
+}
+
+type rangeProvider struct {
+	getSvc *getsvc.Service
+
+	addr oid.Address
+
+	commonPrm *objectUtil.CommonPrm
+
+	localNodeKey *ecdsa.PrivateKey
+}
+
+var _ patcherSDK.RangeProvider = (*rangeProvider)(nil)
+
+func (r *rangeProvider) GetRange(ctx context.Context, rng *objectSDK.Range) io.Reader {
+	pipeReader, pipeWriter := io.Pipe()
+
+	var rngPrm getsvc.RangePrm
+	rngPrm.SetSignerKey(r.localNodeKey)
+	rngPrm.SetCommonParameters(r.commonPrm)
+
+	rngPrm.WithAddress(r.addr)
+	rngPrm.SetChunkWriter(&pipeChunkWriter{
+		wr: pipeWriter,
+	})
+	rngPrm.SetRange(rng)
+
+	getRangeErr := make(chan error)
+
+	go func() {
+		defer pipeWriter.Close()
+
+		select {
+		case <-ctx.Done():
+			pipeWriter.CloseWithError(ctx.Err())
+		case err := <-getRangeErr:
+			pipeWriter.CloseWithError(err)
+		}
+	}()
+
+	go func() {
+		getRangeErr <- r.getSvc.GetRange(ctx, rngPrm)
+	}()
+
+	return pipeReader
+}

pkg/services/object/patch/service.go

@@ -0,0 +1,44 @@
+package patchsvc
+
+import (
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object"
+	getsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/get"
+	putsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/put"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
+)
+
+// Service implements Put operation of Object service v2.
+type Service struct {
+	keyStorage *util.KeyStorage
+
+	getSvc *getsvc.Service
+
+	putSvc *putsvc.Service
+}
+
+// NewService constructs Service instance from provided options.
+func NewService(ks *util.KeyStorage, getSvc *getsvc.Service, putSvc *putsvc.Service) *Service {
+	return &Service{
+		keyStorage: ks,
+
+		getSvc: getSvc,
+
+		putSvc: putSvc,
+	}
+}
+
+// Put calls internal service and returns v2 object streamer.
+func (s *Service) Patch() (object.PatchObjectStream, error) {
+	nodeKey, err := s.keyStorage.GetKey(nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return &Streamer{
+		getSvc: s.getSvc,
+
+		putSvc: s.putSvc,
+
+		localNodeKey: nodeKey,
+	}, nil
+}

pkg/services/object/patch/streamer.go

@@ -0,0 +1,221 @@
+package patchsvc
+
+import (
+	"context"
+	"crypto/ecdsa"
+	"errors"
+	"fmt"
+	"io"
+
+	objectV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
+	refsV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
+	getsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/get"
+	putsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/put"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
+	"git.frostfs.info/TrueCloudLab/frostfs-observability/tracing"
+	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/patcher"
+)
+
+// Streamer for the patch handler is a pipeline that merges two incoming streams of patches
+// and original object payload chunks. The merged result is fed to Put stream target.
+type Streamer struct {
+	// Patcher must be initialized at first Streamer.Send call.
+	patcher patcher.PatchApplier
+
+	nonFirstSend bool
+
+	getSvc *getsvc.Service
+
+	putSvc *putsvc.Service
+
+	localNodeKey *ecdsa.PrivateKey
+}
+
+type pipeChunkWriter struct {
+	wr *io.PipeWriter
+}
+
+type headResponseWriter struct {
+	body *objectV2.HeadResponseBody
+}
+
+func (w *headResponseWriter) WriteHeader(_ context.Context, hdr *objectSDK.Object) error {
+	w.body.SetHeaderPart(toFullObjectHeader(hdr))
+	return nil
+}
+
+func toFullObjectHeader(hdr *objectSDK.Object) objectV2.GetHeaderPart {
+	obj := hdr.ToV2()
+
+	hs := new(objectV2.HeaderWithSignature)
+	hs.SetHeader(obj.GetHeader())
+	hs.SetSignature(obj.GetSignature())
+
+	return hs
+}
+
+func (s *Streamer) init(ctx context.Context, req *objectV2.PatchRequest) error {
+	hdrWithSig, addr, err := s.readHeader(ctx, req)
+	if err != nil {
+		return err
+	}
+
+	commonPrm, err := util.CommonPrmFromV2(req)
+	if err != nil {
+		return err
+	}
+	commonPrm.WithLocalOnly(false)
+
+	rangeProvider := &rangeProvider{
+		getSvc: s.getSvc,
+
+		addr: addr,
+
+		commonPrm: commonPrm,
+
+		localNodeKey: s.localNodeKey,
+	}
+
+	putstm, err := s.putSvc.Put()
+	if err != nil {
+		return err
+	}
+
+	hdr := hdrWithSig.GetHeader()
+	oV2 := new(objectV2.Object)
+	hV2 := new(objectV2.Header)
+	oV2.SetHeader(hV2)
+	oV2.GetHeader().SetContainerID(hdr.GetContainerID())
+	oV2.GetHeader().SetPayloadLength(hdr.GetPayloadLength())
+	oV2.GetHeader().SetAttributes(hdr.GetAttributes())
+
+	ownerID, err := newOwnerID(req.GetVerificationHeader())
+	if err != nil {
+		return err
+	}
+	oV2.GetHeader().SetOwnerID(ownerID)
+
+	prm, err := s.putInitPrm(req, oV2)
+	if err != nil {
+		return err
+	}
+
+	err = putstm.Init(ctx, prm)
+	if err != nil {
+		return err
+	}
+
+	patcherPrm := patcher.Params{
+		Header: objectSDK.NewFromV2(oV2),
+
+		RangeProvider: rangeProvider,
+
+		ObjectWriter: putstm.Target(),
+	}
+
+	s.patcher = patcher.New(patcherPrm)
+	return nil
+}
+
+func (s *Streamer) readHeader(ctx context.Context, req *objectV2.PatchRequest) (hdrWithSig *objectV2.HeaderWithSignature, addr oid.Address, err error) {
+	addrV2 := req.GetBody().GetAddress()
+	if addrV2 == nil {
+		err = errors.New("patch request has nil-address")
+		return
+	}
+
+	if err = addr.ReadFromV2(*addrV2); err != nil {
+		err = fmt.Errorf("read address error: %w", err)
+		return
+	}
+
+	commonPrm, err := util.CommonPrmFromV2(req)
+	if err != nil {
+		return
+	}
+	commonPrm.WithLocalOnly(false)
+
+	var p getsvc.HeadPrm
+	p.SetSignerKey(s.localNodeKey)
+	p.SetCommonParameters(commonPrm)
+
+	resp := new(objectV2.HeadResponse)
+	resp.SetBody(new(objectV2.HeadResponseBody))
+
+	p.WithAddress(addr)
+	p.SetHeaderWriter(&headResponseWriter{
+		body: resp.GetBody(),
+	})
+
+	err = s.getSvc.Head(ctx, p)
+	if err != nil {
+		err = fmt.Errorf("get header error: %w", err)
+		return
+	}
+
+	var ok bool
+	hdrPart := resp.GetBody().GetHeaderPart()
+	if hdrWithSig, ok = hdrPart.(*objectV2.HeaderWithSignature); !ok {
+		err = fmt.Errorf("unexpected header type: %T", hdrPart)
+	}
+	return
+}
+
+func (s *Streamer) Send(ctx context.Context, req *objectV2.PatchRequest) error {
+	ctx, span := tracing.StartSpanFromContext(ctx, "patch.streamer.Send")
+	defer span.End()
+
+	defer func() {
+		s.nonFirstSend = true
+	}()
+
+	if !s.nonFirstSend {
+		if err := s.init(ctx, req); err != nil {
+			return fmt.Errorf("streamer init error: %w", err)
+		}
+	}
+
+	patch := new(objectSDK.Patch)
+	patch.FromV2(req.GetBody())
+
+	if !s.nonFirstSend {
+		err := s.patcher.ApplyAttributesPatch(ctx, patch.NewAttributes, patch.ReplaceAttributes)
+		if err != nil {
+			return fmt.Errorf("patch attributes: %w", err)
+		}
+	}
+
+	if patch.PayloadPatch != nil {
+		err := s.patcher.ApplyPayloadPatch(ctx, patch.PayloadPatch)
+		if err != nil {
+			return fmt.Errorf("patch payload: %w", err)
+		}
+	} else if s.nonFirstSend {
+		return errors.New("invalid non-first patch: empty payload")
+	}
+
+	return nil
+}
+
+func (s *Streamer) CloseAndRecv(ctx context.Context) (*objectV2.PatchResponse, error) {
+	patcherResp, err := s.patcher.Close(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	oidV2 := new(refsV2.ObjectID)
+
+	if patcherResp.AccessIdentifiers.ParentID != nil {
+		patcherResp.AccessIdentifiers.ParentID.WriteToV2(oidV2)
+	} else {
+		patcherResp.AccessIdentifiers.SelfID.WriteToV2(oidV2)
+	}
+
+	return &objectV2.PatchResponse{
+		Body: &objectV2.PatchResponseBody{
+			ObjectID: oidV2,
+		},
+	}, nil
+}

pkg/services/object/patch/util.go

@@ -0,0 +1,53 @@
+package patchsvc
+
+import (
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"errors"
+	"fmt"
+
+	objectV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
+	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
+	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/session"
+	putsvc "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/put"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
+	objectSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+)
+
+// putInitPrm initializes put paramerer for Put stream.
+func (s *Streamer) putInitPrm(req *objectV2.PatchRequest, obj *objectV2.Object) (*putsvc.PutInitPrm, error) {
+	commonPrm, err := util.CommonPrmFromV2(req)
+	if err != nil {
+		return nil, err
+	}
+
+	prm := new(putsvc.PutInitPrm)
+	prm.WithObject(objectSDK.NewFromV2(obj)).
+		WithCommonPrm(commonPrm).
+		WithPrivateKey(s.localNodeKey)
+
+	return prm, nil
+}
+
+func newOwnerID(vh *session.RequestVerificationHeader) (*refs.OwnerID, error) {
+	for vh.GetOrigin() != nil {
+		vh = vh.GetOrigin()
+	}
+	sig := vh.GetBodySignature()
+	if sig == nil {
+		return nil, errors.New("empty body signature")
+	}
+	key, err := keys.NewPublicKeyFromBytes(sig.GetKey(), elliptic.P256())
+	if err != nil {
+		return nil, fmt.Errorf("invalid signature key: %w", err)
+	}
+
+	var userID user.ID
+	user.IDFromKey(&userID, (ecdsa.PublicKey)(*key))
+	ownID := new(refs.OwnerID)
+	userID.WriteToV2(ownID)
+
+	return ownID, nil
+}

pkg/services/object/put/prm.go

@@ -2,6 +2,7 @@ package putsvc
 
 import (
 	"context"
+	"crypto/ecdsa"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/client"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/util"
@@ -20,6 +21,8 @@ type PutInitPrm struct {
 	traverseOpts []placement.Option
 
 	relay func(context.Context, client.NodeInfo, client.MultiAddressClient) error
+
+	privateKey *ecdsa.PrivateKey
 }
 
 type PutChunkPrm struct {
@@ -65,3 +68,11 @@ func (p *PutChunkPrm) WithChunk(v []byte) *PutChunkPrm {
 
 	return p
 }
+
+func (p *PutInitPrm) WithPrivateKey(v *ecdsa.PrivateKey) *PutInitPrm {
+	if p != nil {
+		p.privateKey = v
+	}
+
+	return p
+}

pkg/services/object/put/streamer.go

@@ -47,6 +47,11 @@ func (p *Streamer) Init(ctx context.Context, prm *PutInitPrm) error {
 	return nil
 }
 
+// Target accesses underlying target chunked object writer.
+func (p *Streamer) Target() transformer.ChunkedObjectWriter {
+	return p.target
+}
+
 // MaxObjectSize returns maximum payload size for the streaming session.
 //
 // Must be called after the successful Init.
@@ -79,11 +84,15 @@ func (p *Streamer) initTarget(prm *PutInitPrm) error {
 func (p *Streamer) initUntrustedTarget(prm *PutInitPrm) error {
 	p.relay = prm.relay
 
+	if prm.privateKey != nil {
+		p.privateKey = prm.privateKey
+	} else {
 		nodeKey, err := p.cfg.keyStorage.GetKey(nil)
 		if err != nil {
 			return err
 		}
 		p.privateKey = nodeKey
+	}
 
 	// prepare untrusted-Put object target
 	p.target = &validatingPreparedTarget{
@@ -136,7 +145,11 @@ func (p *Streamer) initTrustedTarget(prm *PutInitPrm) error {
 		}
 	}
 
+	if prm.privateKey != nil {
+		p.privateKey = prm.privateKey
+	} else {
 		p.privateKey = key
+	}
 	p.target = &validatingTarget{
 		fmt: p.fmtValidator,
 		nextTarget: transformer.NewPayloadSizeLimiter(transformer.Params{

pkg/services/object/response.go

@@ -37,6 +37,11 @@ type putStreamResponser struct {
 	respSvc *response.Service
 }
 
+type patchStreamResponser struct {
+	stream  PatchObjectStream
+	respSvc *response.Service
+}
+
 // NewResponseService returns object service instance that passes internal service
 // call to response service.
 func NewResponseService(objSvc ServiceServer, respSvc *response.Service) *ResponseService {
@@ -87,6 +92,35 @@ func (s *ResponseService) Put() (PutObjectStream, error) {
 	}, nil
 }
 
+func (s *patchStreamResponser) Send(ctx context.Context, req *object.PatchRequest) error {
+	if err := s.stream.Send(ctx, req); err != nil {
+		return fmt.Errorf("could not send the request: %w", err)
+	}
+	return nil
+}
+
+func (s *patchStreamResponser) CloseAndRecv(ctx context.Context) (*object.PatchResponse, error) {
+	r, err := s.stream.CloseAndRecv(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("could not close stream and receive response: %w", err)
+	}
+
+	s.respSvc.SetMeta(r)
+	return r, nil
+}
+
+func (s *ResponseService) Patch() (PatchObjectStream, error) {
+	stream, err := s.svc.Patch()
+	if err != nil {
+		return nil, fmt.Errorf("could not create Put object streamer: %w", err)
+	}
+
+	return &patchStreamResponser{
+		stream:  stream,
+		respSvc: s.respSvc,
+	}, nil
+}
+
 func (s *ResponseService) PutSingle(ctx context.Context, req *object.PutSingleRequest) (*object.PutSingleResponse, error) {
 	resp, err := s.svc.PutSingle(ctx, req)
 	if err != nil {

pkg/services/object/server.go

@@ -31,11 +31,18 @@ type PutObjectStream interface {
 	CloseAndRecv(context.Context) (*object.PutResponse, error)
 }
 
+// PatchObjectStream is an interface of FrostFS API v2 compatible patch streamer.
+type PatchObjectStream interface {
+	Send(context.Context, *object.PatchRequest) error
+	CloseAndRecv(context.Context) (*object.PatchResponse, error)
+}
+
 // ServiceServer is an interface of utility
 // serving v2 Object service.
 type ServiceServer interface {
 	Get(*object.GetRequest, GetObjectStream) error
 	Put() (PutObjectStream, error)
+	Patch() (PatchObjectStream, error)
 	Head(context.Context, *object.HeadRequest) (*object.HeadResponse, error)
 	Search(*object.SearchRequest, SearchStream) error
 	Delete(context.Context, *object.DeleteRequest) (*object.DeleteResponse, error)

pkg/services/object/sign.go

@@ -35,6 +35,12 @@ type putStreamSigner struct {
 	err    error
 }
 
+type patchStreamSigner struct {
+	sigSvc *util.SignService
+	stream PatchObjectStream
+	err    error
+}
+
 type getRangeStreamSigner struct {
 	GetObjectRangeStream
 	sigSvc *util.SignService
@@ -112,6 +118,42 @@ func (s *SignService) Put() (PutObjectStream, error) {
 	}, nil
 }
 
+func (s *patchStreamSigner) Send(ctx context.Context, req *object.PatchRequest) error {
+	if s.err = s.sigSvc.VerifyRequest(req); s.err != nil {
+		return util.ErrAbortStream
+	}
+	if s.err = s.stream.Send(ctx, req); s.err != nil {
+		return util.ErrAbortStream
+	}
+	return nil
+}
+
+func (s *patchStreamSigner) CloseAndRecv(ctx context.Context) (resp *object.PatchResponse, err error) {
+	if s.err != nil {
+		err = s.err
+		resp = new(object.PatchResponse)
+	} else {
+		resp, err = s.stream.CloseAndRecv(ctx)
+		if err != nil {
+			return nil, fmt.Errorf("could not close stream and receive response: %w", err)
+		}
+	}
+
+	return resp, s.sigSvc.SignResponse(resp, err)
+}
+
+func (s *SignService) Patch() (PatchObjectStream, error) {
+	stream, err := s.svc.Patch()
+	if err != nil {
+		return nil, fmt.Errorf("could not create Put object streamer: %w", err)
+	}
+
+	return &patchStreamSigner{
+		stream: stream,
+		sigSvc: s.sigSvc,
+	}, nil
+}
+
 func (s *SignService) Head(ctx context.Context, req *object.HeadRequest) (*object.HeadResponse, error) {
 	if err := s.sigSvc.VerifyRequest(req); err != nil {
 		resp := new(object.HeadResponse)

pkg/services/object/transport_splitter.go

@@ -91,6 +91,10 @@ func (c TransportSplitter) Put() (PutObjectStream, error) {
 	return c.next.Put()
 }
 
+func (c TransportSplitter) Patch() (PatchObjectStream, error) {
+	return c.next.Patch()
+}
+
 func (c TransportSplitter) Head(ctx context.Context, request *object.HeadRequest) (*object.HeadResponse, error) {
 	return c.next.Head(ctx, request)
 }