[#1452] container: Add ListStream method

* Added new method for listing containers to container service.
  It opens stream and sends containers in batches.

* Added TransportSplitter wrapper around ExecutionService to
  split container ID list read from contract in parts that are
  smaller than grpc max message size. Batch size can be changed
  in node configuration file (as in example config file).

* Changed `container list` implementaion in cli: now ListStream
  is called by default. Old List is called only if ListStream
  is not implemented.

* Changed `internalclient.ListContainersPrm`.`Account` to
  `OwnerID` since `client.PrmContainerList`.`Account` was
  renamed to `OwnerID` in sdk.

Signed-off-by: Ekaterina Lebedeva <ekaterina.lebedeva@yadro.com>

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

@@ -83,6 +83,25 @@ func (x ListContainersRes) SortedIDList() []cid.ID {
 	return list
 }
 
+func ListContainersStream(ctx context.Context, prm ListContainersPrm, processCnr func(id cid.ID) bool) (err error) {
+	cliPrm := &client.PrmContainerListStream{
+		XHeaders: prm.XHeaders,
+		OwnerID:  prm.OwnerID,
+		Session:  prm.Session,
+	}
+	rdr, err := prm.cli.ContainerListInit(ctx, *cliPrm)
+	if err != nil {
+		return fmt.Errorf("init container list: %w", err)
+	}
+
+	err = rdr.Iterate(processCnr)
+	if err != nil {
+		return fmt.Errorf("read container list: %w", err)
+	}
+
+	return
+}
+
 // PutContainerPrm groups parameters of PutContainer operation.
 type PutContainerPrm struct {
 	Client       *client.Client

cmd/frostfs-cli/modules/container/list.go

@@ -6,8 +6,11 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-cli/internal/key"
 	commonCmd "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/internal/common"
 	containerSDK "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"github.com/spf13/cobra"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
 )
 
 // flags of list command.
@@ -51,44 +54,60 @@ var listContainersCmd = &cobra.Command{
 
 		var prm internalclient.ListContainersPrm
 		prm.SetClient(cli)
-		prm.Account = idUser
-
-		res, err := internalclient.ListContainers(cmd.Context(), prm)
-		commonCmd.ExitOnErr(cmd, "rpc error: %w", err)
-
+		prm.OwnerID = idUser
 		prmGet := internalclient.GetContainerPrm{
 			Client: cli,
 		}
+		var containerIDs []cid.ID
+
+		err := internalclient.ListContainersStream(cmd.Context(), prm, func(id cid.ID) bool {
+			printContainer(cmd, prmGet, id)
+			return false
+		})
+		if err == nil {
+			return
+		}
+
+		if e, ok := status.FromError(err); ok && e.Code() == codes.Unimplemented {
+			res, err := internalclient.ListContainers(cmd.Context(), prm)
+			commonCmd.ExitOnErr(cmd, "rpc error: %w", err)
+			containerIDs = res.SortedIDList()
+		} else {
+			commonCmd.ExitOnErr(cmd, "rpc error: %w", err)
+		}
 
-		containerIDs := res.SortedIDList()
 		for _, cnrID := range containerIDs {
-			if flagVarListName == "" && !flagVarListPrintAttr {
-				cmd.Println(cnrID.String())
-				continue
-			}
-
-			prmGet.ClientParams.ContainerID = &cnrID
-			res, err := internalclient.GetContainer(cmd.Context(), prmGet)
-			if err != nil {
-				cmd.Printf("  failed to read attributes: %v\n", err)
-				continue
-			}
-
-			cnr := res.Container()
-			if cnrName := containerSDK.Name(cnr); flagVarListName != "" && cnrName != flagVarListName {
-				continue
-			}
-			cmd.Println(cnrID.String())
-
-			if flagVarListPrintAttr {
-				cnr.IterateUserAttributes(func(key, val string) {
-					cmd.Printf("  %s: %s\n", key, val)
-				})
-			}
+			printContainer(cmd, prmGet, cnrID)
 		}
 	},
 }
 
+func printContainer(cmd *cobra.Command, prmGet internalclient.GetContainerPrm, id cid.ID) {
+	if flagVarListName == "" && !flagVarListPrintAttr {
+		cmd.Println(id.String())
+		return
+	}
+
+	prmGet.ClientParams.ContainerID = &id
+	res, err := internalclient.GetContainer(cmd.Context(), prmGet)
+	if err != nil {
+		cmd.Printf("  failed to read attributes: %v\n", err)
+		return
+	}
+
+	cnr := res.Container()
+	if cnrName := containerSDK.Name(cnr); flagVarListName != "" && cnrName != flagVarListName {
+		return
+	}
+	cmd.Println(id.String())
+
+	if flagVarListPrintAttr {
+		cnr.IterateUserAttributes(func(key, val string) {
+			cmd.Printf("  %s: %s\n", key, val)
+		})
+	}
+}
+
 func initContainerListContainersCmd() {
 	commonflags.Init(listContainersCmd)
 

cmd/frostfs-node/config.go

@@ -606,9 +606,10 @@ type cfgAccounting struct {
 type cfgContainer struct {
 	scriptHash neogoutil.Uint160
 
-	parsers     map[event.Type]event.NotificationParser
-	subscribers map[event.Type][]event.Handler
-	workerPool  util.WorkerPool // pool for asynchronous handlers
+	parsers            map[event.Type]event.NotificationParser
+	subscribers        map[event.Type][]event.Handler
+	workerPool         util.WorkerPool // pool for asynchronous handlers
+	containerBatchSize uint32
 }
 
 type cfgFrostfsID struct {

cmd/frostfs-node/config/container/container.go

@@ -0,0 +1,27 @@
+package containerconfig
+
+import "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+
+const (
+	subsection           = "container"
+	listStreamSubsection = "list_stream"
+
+	// ContainerBatchSizeDefault represents he maximum amount of containers to send via stream at once.
+	ContainerBatchSizeDefault = 1000
+)
+
+// ContainerBatchSize returns the value of "batch_size" config parameter
+// from "list_stream" subsection of "container" section.
+//
+// Returns ContainerBatchSizeDefault if the value is missing or if
+// the value is not positive integer.
+func ContainerBatchSize(c *config.Config) uint32 {
+	if c.Sub(subsection).Sub(listStreamSubsection).Value("batch_size") == nil {
+		return ContainerBatchSizeDefault
+	}
+	size := config.Uint32Safe(c.Sub(subsection).Sub(listStreamSubsection), "batch_size")
+	if size == 0 {
+		return ContainerBatchSizeDefault
+	}
+	return size
+}

cmd/frostfs-node/config/container/container_test.go

@@ -0,0 +1,27 @@
+package containerconfig_test
+
+import (
+	"testing"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config"
+	containerconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/container"
+	configtest "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/test"
+	"github.com/stretchr/testify/require"
+)
+
+func TestContainerSection(t *testing.T) {
+	t.Run("defaults", func(t *testing.T) {
+		empty := configtest.EmptyConfig()
+		require.Equal(t, uint32(containerconfig.ContainerBatchSizeDefault), containerconfig.ContainerBatchSize(empty))
+	})
+
+	const path = "../../../../config/example/node"
+	fileConfigTest := func(c *config.Config) {
+		require.Equal(t, uint32(1000), containerconfig.ContainerBatchSize(c))
+	}
+
+	configtest.ForEachFileType(path, fileConfigTest)
+	t.Run("ENV", func(t *testing.T) {
+		configtest.ForEnvFileType(t, path, fileConfigTest)
+	})
+}

cmd/frostfs-node/container.go

@@ -5,6 +5,7 @@ import (
 	"context"
 	"net"
 
+	containerconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/container"
 	morphconfig "git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-node/config/morph"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/metrics"
@@ -47,6 +48,7 @@ func initContainerService(_ context.Context, c *cfg) {
 	}
 
 	c.shared.frostfsidClient = frostfsIDSubjectProvider
+	c.cfgContainer.containerBatchSize = containerconfig.ContainerBatchSize(c.appCfg)
 
 	defaultChainRouter := engine.NewDefaultChainRouterWithLocalOverrides(
 		c.cfgObject.cfgAccessPolicyEngine.accessPolicyEngine.MorphRuleChainStorage(),
@@ -56,7 +58,9 @@ func initContainerService(_ context.Context, c *cfg) {
 		&c.key.PrivateKey,
 		containerService.NewAPEServer(defaultChainRouter, cnrRdr,
 			newCachedIRFetcher(createInnerRingFetcher(c)), c.netMapSource, c.shared.frostfsidClient,
-			containerService.NewExecutionService(containerMorph.NewExecutor(cnrRdr, cnrWrt), c.respSvc),
+			containerService.NewSplitterService(
+				c.cfgContainer.containerBatchSize, c.respSvc,
+				containerService.NewExecutionService(containerMorph.NewExecutor(cnrRdr, cnrWrt), c.respSvc)),
 		),
 	)
 	service = containerService.NewAuditService(service, c.log, c.audit)

config/example/node.env

@@ -83,6 +83,9 @@ FROSTFS_POLICER_HEAD_TIMEOUT=15s
 FROSTFS_REPLICATOR_PUT_TIMEOUT=15s
 FROSTFS_REPLICATOR_POOL_SIZE=10
 
+# Container service section
+FROSTFS_CONTAINER_LIST_STREAM_BATCH_SIZE=500
+
 # Object service section
 FROSTFS_OBJECT_PUT_REMOTE_POOL_SIZE=100
 FROSTFS_OBJECT_PUT_LOCAL_POOL_SIZE=200

config/example/node.json

@@ -124,6 +124,11 @@
     "pool_size": 10,
     "put_timeout": "15s"
   },
+  "container": {
+    "list_stream": {
+      "batch_size": "500"
+    }
+  },
   "object": {
     "delete": {
       "tombstone_lifetime": 10

config/example/node.yaml

@@ -108,6 +108,10 @@ replicator:
   put_timeout: 15s  # timeout for the Replicator PUT remote operation
   pool_size: 10     # maximum amount of concurrent replications
 
+container:
+  list_stream:
+    batch_size: 500 # container_batch_size is the maximum amount of containers to send via stream at once
+
 object:
   delete:
     tombstone_lifetime: 10 # tombstone "local" lifetime in epochs

go.mod

@@ -8,7 +8,7 @@ require (
 	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 v0.0.0-20241112082307-f17779933e88
-	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20241206094944-81c423e7094d
+	git.frostfs.info/TrueCloudLab/frostfs-sdk-go v0.0.0-20241210104938-c4463df8d467
 	git.frostfs.info/TrueCloudLab/hrw v1.2.1
 	git.frostfs.info/TrueCloudLab/multinet v0.0.0-20241015075604-6cb0d80e0972
 	git.frostfs.info/TrueCloudLab/policy-engine v0.0.0-20240814080254-96225afacb88

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

@@ -80,3 +80,26 @@ func (s *Server) List(ctx context.Context, req *containerGRPC.ListRequest) (*con
 
 	return resp.ToGRPCMessage().(*containerGRPC.ListResponse), nil
 }
+
+type containerStreamerV2 struct {
+	containerGRPC.ContainerService_ListStreamServer
+}
+
+func (s *containerStreamerV2) Send(resp *container.ListStreamResponse) error {
+	return s.ContainerService_ListStreamServer.Send(
+		resp.ToGRPCMessage().(*containerGRPC.ListStreamResponse),
+	)
+}
+
+// ListStream converts gRPC ListRequest message and server-side stream and overtakes its data
+// to gRPC stream.
+func (s *Server) ListStream(req *containerGRPC.ListStreamRequest, gStream containerGRPC.ContainerService_ListStreamServer) error {
+	listReq := new(container.ListStreamRequest)
+	if err := listReq.FromGRPCMessage(req); err != nil {
+		return err
+	}
+
+	return s.srv.ListStream(listReq, &containerStreamerV2{
+		ContainerService_ListStreamServer: gStream,
+	})
+}

pkg/services/container/ape.go

@@ -175,6 +175,79 @@ func (ac *apeChecker) List(ctx context.Context, req *container.ListRequest) (*co
 	return nil, apeErr(nativeschema.MethodListContainers, s)
 }
 
+func (ac *apeChecker) ListStream(req *container.ListStreamRequest, stream ListStream) error {
+	ctx, span := tracing.StartSpanFromContext(stream.Context(), "apeChecker.ListStream")
+	defer span.End()
+
+	role, pk, err := ac.getRoleWithoutContainerID(req.GetBody().GetOwnerID(), req.GetMetaHeader(), req.GetVerificationHeader())
+	if err != nil {
+		return err
+	}
+
+	reqProps := map[string]string{
+		nativeschema.PropertyKeyActorPublicKey: hex.EncodeToString(pk.Bytes()),
+		nativeschema.PropertyKeyActorRole:      role,
+	}
+
+	reqProps, err = ac.fillWithUserClaimTags(reqProps, pk)
+	if err != nil {
+		return err
+	}
+	if p, ok := peer.FromContext(ctx); ok {
+		if tcpAddr, ok := p.Addr.(*net.TCPAddr); ok {
+			reqProps[commonschema.PropertyKeyFrostFSSourceIP] = tcpAddr.IP.String()
+		}
+	}
+
+	namespace, err := ac.namespaceByOwner(req.GetBody().GetOwnerID())
+	if err != nil {
+		return fmt.Errorf("could not get owner namespace: %w", err)
+	}
+	if err := ac.validateNamespaceByPublicKey(pk, namespace); err != nil {
+		return err
+	}
+
+	request := aperequest.NewRequest(
+		nativeschema.MethodListContainers,
+		aperequest.NewResource(
+			resourceName(namespace, ""),
+			make(map[string]string),
+		),
+		reqProps,
+	)
+
+	groups, err := aperequest.Groups(ac.frostFSIDClient, pk)
+	if err != nil {
+		return fmt.Errorf("failed to get group ids: %w", err)
+	}
+
+	// Policy contract keeps group related chains as namespace-group pair.
+	for i := range groups {
+		groups[i] = fmt.Sprintf("%s:%s", namespace, groups[i])
+	}
+
+	rt := policyengine.NewRequestTargetWithNamespace(namespace)
+	rt.User = &policyengine.Target{
+		Type: policyengine.User,
+		Name: fmt.Sprintf("%s:%s", namespace, pk.Address()),
+	}
+	rt.Groups = make([]policyengine.Target, len(groups))
+	for i := range groups {
+		rt.Groups[i] = policyengine.GroupTarget(groups[i])
+	}
+
+	s, found, err := ac.router.IsAllowed(apechain.Ingress, rt, request)
+	if err != nil {
+		return err
+	}
+
+	if found && s == apechain.Allow {
+		return ac.next.ListStream(req, stream)
+	}
+
+	return apeErr(nativeschema.MethodListContainers, s)
+}
+
 func (ac *apeChecker) Put(ctx context.Context, req *container.PutRequest) (*container.PutResponse, error) {
 	ctx, span := tracing.StartSpanFromContext(ctx, "apeChecker.Put")
 	defer span.End()

pkg/services/container/ape_test.go

@@ -1079,6 +1079,11 @@ func (s *srvStub) List(context.Context, *container.ListRequest) (*container.List
 	return &container.ListResponse{}, nil
 }
 
+func (s *srvStub) ListStream(*container.ListStreamRequest, ListStream) error {
+	s.calls["ListStream"]++
+	return nil
+}
+
 func (s *srvStub) Put(context.Context, *container.PutRequest) (*container.PutResponse, error) {
 	s.calls["Put"]++
 	return &container.PutResponse{}, nil

pkg/services/container/audit.go

@@ -63,6 +63,17 @@ func (a *auditService) List(ctx context.Context, req *container.ListRequest) (*c
 	return res, err
 }
 
+// ListStream implements Server.
+func (a *auditService) ListStream(req *container.ListStreamRequest, stream ListStream) error {
+	err := a.next.ListStream(req, stream)
+	if !a.enabled.Load() {
+		return err
+	}
+	audit.LogRequest(stream.Context(), a.log, container_grpc.ContainerService_ListStream_FullMethodName, req,
+		audit.TargetFromRef(req.GetBody().GetOwnerID(), &user.ID{}), err == nil)
+	return err
+}
+
 // Put implements Server.
 func (a *auditService) Put(ctx context.Context, req *container.PutRequest) (*container.PutResponse, error) {
 	res, err := a.next.Put(ctx, req)

pkg/services/container/executor.go

@@ -14,6 +14,7 @@ type ServiceExecutor interface {
 	Delete(context.Context, *session.Token, *container.DeleteRequestBody) (*container.DeleteResponseBody, error)
 	Get(context.Context, *container.GetRequestBody) (*container.GetResponseBody, error)
 	List(context.Context, *container.ListRequestBody) (*container.ListResponseBody, error)
+	ListStream(context.Context, *container.ListStreamRequest, ListStream) error
 }
 
 type executorSvc struct {
@@ -93,3 +94,11 @@ func (s *executorSvc) List(ctx context.Context, req *container.ListRequest) (*co
 	s.respSvc.SetMeta(resp)
 	return resp, nil
 }
+
+func (s *executorSvc) ListStream(req *container.ListStreamRequest, stream ListStream) error {
+	err := s.exec.ListStream(stream.Context(), req, stream)
+	if err != nil {
+		return fmt.Errorf("could not execute ListStream request: %w", err)
+	}
+	return nil
+}

pkg/services/container/morph/executor.go

@@ -200,3 +200,35 @@ func (s *morphExecutor) List(_ context.Context, body *container.ListRequestBody)
 
 	return res, nil
 }
+
+func (s *morphExecutor) ListStream(_ context.Context, req *container.ListStreamRequest, stream containerSvc.ListStream) error {
+	body := req.GetBody()
+	idV2 := body.GetOwnerID()
+	if idV2 == nil {
+		return errMissingUserID
+	}
+
+	var id user.ID
+
+	err := id.ReadFromV2(*idV2)
+	if err != nil {
+		return fmt.Errorf("invalid user ID: %w", err)
+	}
+
+	cnrs, err := s.rdr.ContainersOf(&id)
+	if err != nil {
+		return err
+	}
+
+	cidList := make([]refs.ContainerID, len(cnrs))
+	for i := range cnrs {
+		cnrs[i].WriteToV2(&cidList[i])
+	}
+
+	resBody := new(container.ListStreamResponseBody)
+	resBody.SetContainerIDs(cidList)
+	r := new(container.ListStreamResponse)
+	r.SetBody(resBody)
+
+	return stream.Send(r)
+}

pkg/services/container/server.go

@@ -3,6 +3,7 @@ package container
 import (
 	"context"
 
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/util"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/container"
 )
 
@@ -12,4 +13,11 @@ type Server interface {
 	Get(context.Context, *container.GetRequest) (*container.GetResponse, error)
 	Delete(context.Context, *container.DeleteRequest) (*container.DeleteResponse, error)
 	List(context.Context, *container.ListRequest) (*container.ListResponse, error)
+	ListStream(*container.ListStreamRequest, ListStream) error
+}
+
+// ListStream is an interface of FrostFS API v2 compatible search streamer.
+type ListStream interface {
+	util.ServerStream
+	Send(*container.ListStreamResponse) error
 }

pkg/services/container/sign.go

@@ -56,3 +56,40 @@ func (s *signService) List(ctx context.Context, req *container.ListRequest) (*co
 	resp, err := util.EnsureNonNilResponse(s.svc.List(ctx, req))
 	return resp, s.sigSvc.SignResponse(resp, err)
 }
+
+func (s *signService) ListStream(req *container.ListStreamRequest, stream ListStream) error {
+	if err := s.sigSvc.VerifyRequest(req); err != nil {
+		resp := new(container.ListStreamResponse)
+		_ = s.sigSvc.SignResponse(resp, err)
+		return stream.Send(resp)
+	}
+
+	ss := &listStreamSigner{
+		ListStream: stream,
+		sigSvc:     s.sigSvc,
+	}
+	err := s.svc.ListStream(req, ss)
+	if err != nil || !ss.nonEmptyResp {
+		return ss.send(new(container.ListStreamResponse), err)
+	}
+	return nil
+}
+
+type listStreamSigner struct {
+	ListStream
+	sigSvc *util.SignService
+
+	nonEmptyResp bool // set on first Send call
+}
+
+func (s *listStreamSigner) Send(resp *container.ListStreamResponse) error {
+	s.nonEmptyResp = true
+	return s.send(resp, nil)
+}
+
+func (s *listStreamSigner) send(resp *container.ListStreamResponse, err error) error {
+	if err := s.sigSvc.SignResponse(resp, err); err != nil {
+		return err
+	}
+	return s.ListStream.Send(resp)
+}

pkg/services/container/transport_splitter.go

@@ -0,0 +1,92 @@
+package container
+
+import (
+	"context"
+	"fmt"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/util"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/util/response"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/api/container"
+)
+
+type (
+	TransportSplitter struct {
+		next Server
+
+		respSvc   *response.Service
+		cnrAmount uint32
+	}
+
+	listStreamMsgSizeCtrl struct {
+		util.ServerStream
+		stream    ListStream
+		respSvc   *response.Service
+		cnrAmount uint32
+	}
+)
+
+func NewSplitterService(cnrAmount uint32, respSvc *response.Service, next Server) Server {
+	return &TransportSplitter{
+		next:      next,
+		respSvc:   respSvc,
+		cnrAmount: cnrAmount,
+	}
+}
+
+func (s *TransportSplitter) Put(ctx context.Context, req *container.PutRequest) (*container.PutResponse, error) {
+	return s.next.Put(ctx, req)
+}
+
+func (s *TransportSplitter) Delete(ctx context.Context, req *container.DeleteRequest) (*container.DeleteResponse, error) {
+	return s.next.Delete(ctx, req)
+}
+
+func (s *TransportSplitter) Get(ctx context.Context, req *container.GetRequest) (*container.GetResponse, error) {
+	return s.next.Get(ctx, req)
+}
+
+func (s *TransportSplitter) List(ctx context.Context, req *container.ListRequest) (*container.ListResponse, error) {
+	return s.next.List(ctx, req)
+}
+
+func (s *TransportSplitter) ListStream(req *container.ListStreamRequest, stream ListStream) error {
+	return s.next.ListStream(req, &listStreamMsgSizeCtrl{
+		ServerStream: stream,
+		stream:       stream,
+		respSvc:      s.respSvc,
+		cnrAmount:    s.cnrAmount,
+	})
+}
+
+func (s *listStreamMsgSizeCtrl) Send(resp *container.ListStreamResponse) error {
+	s.respSvc.SetMeta(resp)
+	body := resp.GetBody()
+	ids := body.GetContainerIDs()
+
+	var newResp *container.ListStreamResponse
+
+	for {
+		if newResp == nil {
+			newResp = new(container.ListStreamResponse)
+			newResp.SetBody(body)
+		}
+
+		cut := min(s.cnrAmount, uint32(len(ids)))
+
+		body.SetContainerIDs(ids[:cut])
+		newResp.SetMetaHeader(resp.GetMetaHeader())
+		newResp.SetVerificationHeader(resp.GetVerificationHeader())
+
+		if err := s.stream.Send(newResp); err != nil {
+			return fmt.Errorf("TransportSplitter: %w", err)
+		}
+
+		ids = ids[cut:]
+
+		if len(ids) == 0 {
+			break
+		}
+	}
+
+	return nil
+}