cmd/http-gw/app.go

@@ -16,6 +16,7 @@ import (
 
 	v2container "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/container"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/cache"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/frostfs"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/frostfs/services"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler/middleware"
@@ -600,10 +601,10 @@ func (a *app) reqNamespace(h fasthttp.RequestHandler) fasthttp.RequestHandler {
 	}
 }
 
-func (a *app) AppParams() *utils.AppParams {
-	return &utils.AppParams{
+func (a *app) AppParams() *handler.AppParams {
+	return &handler.AppParams{
 		Logger:   a.log,
-		Pool:     a.pool,
+		FrostFS:  frostfs.NewFrostFS(a.pool),
 		Owner:    a.owner,
 		Resolver: a.resolver,
 		Cache:    cache.NewBucketCache(getCacheOptions(a.cfg, a.log)),

internal/frostfs/frostfs.go

@@ -0,0 +1,260 @@
+package frostfs
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"strings"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+// FrostFS represents virtual connection to the FrostFS network.
+// It is used to provide an interface to dependent packages
+// which work with FrostFS.
+type FrostFS struct {
+	pool *pool.Pool
+}
+
+// NewFrostFS creates new FrostFS using provided pool.Pool.
+func NewFrostFS(p *pool.Pool) *FrostFS {
+	return &FrostFS{
+		pool: p,
+	}
+}
+
+// Container implements frostfs.FrostFS interface method.
+func (x *FrostFS) Container(ctx context.Context, layerPrm handler.PrmContainer) (*container.Container, error) {
+	prm := pool.PrmContainerGet{
+		ContainerID: layerPrm.ContainerID,
+	}
+
+	res, err := x.pool.GetContainer(ctx, prm)
+	if err != nil {
+		return nil, handleObjectError("read container via connection pool", err)
+	}
+
+	return &res, nil
+}
+
+// CreateObject implements frostfs.FrostFS interface method.
+func (x *FrostFS) CreateObject(ctx context.Context, prm handler.PrmObjectCreate) (oid.ID, error) {
+	var prmPut pool.PrmObjectPut
+	prmPut.SetHeader(*prm.Object)
+	prmPut.SetPayload(prm.Payload)
+	prmPut.SetClientCut(prm.ClientCut)
+	prmPut.WithoutHomomorphicHash(prm.WithoutHomomorphicHash)
+	prmPut.SetBufferMaxSize(prm.BufferMaxSize)
+
+	if prm.BearerToken != nil {
+		prmPut.UseBearer(*prm.BearerToken)
+	}
+
+	idObj, err := x.pool.PutObject(ctx, prmPut)
+	return idObj, handleObjectError("save object via connection pool", err)
+}
+
+// wraps io.ReadCloser and transforms Read errors related to access violation
+// to frostfs.ErrAccessDenied.
+type payloadReader struct {
+	io.ReadCloser
+}
+
+func (x payloadReader) Read(p []byte) (int, error) {
+	n, err := x.ReadCloser.Read(p)
+	if err != nil && errors.Is(err, io.EOF) {
+		return n, err
+	}
+	return n, handleObjectError("read payload", err)
+}
+
+// ReadObject implements frostfs.FrostFS interface method.
+func (x *FrostFS) ReadObject(ctx context.Context, prm handler.PrmObjectRead) (*handler.ObjectPart, error) {
+	var prmGet pool.PrmObjectGet
+	prmGet.SetAddress(prm.Address)
+
+	if prm.BearerToken != nil {
+		prmGet.UseBearer(*prm.BearerToken)
+	}
+
+	if prm.WithHeader {
+		if prm.WithPayload {
+			res, err := x.pool.GetObject(ctx, prmGet)
+			if err != nil {
+				return nil, handleObjectError("init full object reading via connection pool", err)
+			}
+
+			defer res.Payload.Close()
+
+			payload, err := io.ReadAll(res.Payload)
+			if err != nil {
+				return nil, handleObjectError("read full object payload", err)
+			}
+
+			res.Header.SetPayload(payload)
+
+			return &handler.ObjectPart{
+				Head: &res.Header,
+			}, nil
+		}
+
+		var prmHead pool.PrmObjectHead
+		prmHead.SetAddress(prm.Address)
+
+		if prm.BearerToken != nil {
+			prmHead.UseBearer(*prm.BearerToken)
+		}
+
+		hdr, err := x.pool.HeadObject(ctx, prmHead)
+		if err != nil {
+			return nil, handleObjectError("read object header via connection pool", err)
+		}
+
+		return &handler.ObjectPart{
+			Head: &hdr,
+		}, nil
+	} else if prm.PayloadRange[0]+prm.PayloadRange[1] == 0 {
+		res, err := x.pool.GetObject(ctx, prmGet)
+		if err != nil {
+			return nil, handleObjectError("init full payload range reading via connection pool", err)
+		}
+
+		return &handler.ObjectPart{
+			Payload: res.Payload,
+		}, nil
+	}
+
+	var prmRange pool.PrmObjectRange
+	prmRange.SetAddress(prm.Address)
+	prmRange.SetOffset(prm.PayloadRange[0])
+	prmRange.SetLength(prm.PayloadRange[1])
+
+	if prm.BearerToken != nil {
+		prmRange.UseBearer(*prm.BearerToken)
+	}
+
+	res, err := x.pool.ObjectRange(ctx, prmRange)
+	if err != nil {
+		return nil, handleObjectError("init payload range reading via connection pool", err)
+	}
+
+	return &handler.ObjectPart{
+		Payload: payloadReader{&res},
+	}, nil
+}
+
+// SearchObjects implements frostfs.FrostFS interface method.
+func (x *FrostFS) SearchObjects(ctx context.Context, prm handler.PrmObjectSearch) (handler.ResObjectSearch, error) {
+	var prmSearch pool.PrmObjectSearch
+	prmSearch.SetContainerID(prm.Container)
+	prmSearch.SetFilters(prm.Filters)
+
+	if prm.BearerToken != nil {
+		prmSearch.UseBearer(*prm.BearerToken)
+	}
+
+	res, err := x.pool.SearchObjects(ctx, prmSearch)
+	if err != nil {
+		return nil, handleObjectError("init object search via connection pool", err)
+	}
+
+	return &res, nil
+}
+
+// GetEpochDurations implements frostfs.FrostFS interface method.
+func (x *FrostFS) GetEpochDurations(ctx context.Context) (*utils.EpochDurations, error) {
+	networkInfo, err := x.pool.NetworkInfo(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	res := &utils.EpochDurations{
+		CurrentEpoch:  networkInfo.CurrentEpoch(),
+		MsPerBlock:    networkInfo.MsPerBlock(),
+		BlockPerEpoch: networkInfo.EpochDuration(),
+	}
+
+	if res.BlockPerEpoch == 0 {
+		return nil, fmt.Errorf("EpochDuration is empty")
+	}
+	return res, nil
+}
+
+// ResolverFrostFS represents virtual connection to the FrostFS network.
+// It implements resolver.FrostFS.
+type ResolverFrostFS struct {
+	pool *pool.Pool
+}
+
+// NewResolverFrostFS creates new ResolverFrostFS using provided pool.Pool.
+func NewResolverFrostFS(p *pool.Pool) *ResolverFrostFS {
+	return &ResolverFrostFS{pool: p}
+}
+
+// SystemDNS implements resolver.FrostFS interface method.
+func (x *ResolverFrostFS) SystemDNS(ctx context.Context) (string, error) {
+	networkInfo, err := x.pool.NetworkInfo(ctx)
+	if err != nil {
+		return "", handleObjectError("read network info via client", err)
+	}
+
+	domain := networkInfo.RawNetworkParameter("SystemDNS")
+	if domain == nil {
+		return "", errors.New("system DNS parameter not found or empty")
+	}
+
+	return string(domain), nil
+}
+
+func handleObjectError(msg string, err error) error {
+	if err == nil {
+		return nil
+	}
+
+	if reason, ok := IsErrObjectAccessDenied(err); ok {
+		return fmt.Errorf("%s: %w: %s", msg, handler.ErrAccessDenied, reason)
+	}
+
+	if IsTimeoutError(err) {
+		return fmt.Errorf("%s: %w: %s", msg, handler.ErrGatewayTimeout, err.Error())
+	}
+
+	return fmt.Errorf("%s: %w", msg, err)
+}
+
+func UnwrapErr(err error) error {
+	unwrappedErr := errors.Unwrap(err)
+	for unwrappedErr != nil {
+		err = unwrappedErr
+		unwrappedErr = errors.Unwrap(err)
+	}
+
+	return err
+}
+
+func IsErrObjectAccessDenied(err error) (string, bool) {
+	err = UnwrapErr(err)
+	switch err := err.(type) {
+	default:
+		return "", false
+	case *apistatus.ObjectAccessDenied:
+		return err.Reason(), true
+	}
+}
+
+func IsTimeoutError(err error) bool {
+	if strings.Contains(err.Error(), "timeout") ||
+		errors.Is(err, context.DeadlineExceeded) {
+		return true
+	}
+
+	return status.Code(UnwrapErr(err)) == codes.DeadlineExceeded
+}

internal/handler/download.go

@@ -17,7 +17,6 @@ import (
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	"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/pool"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/zap"
 )
@@ -46,19 +45,20 @@ func (h *Handler) DownloadByAttribute(c *fasthttp.RequestCtx) {
 	h.byAttribute(c, h.receiveFile)
 }
 
-func (h *Handler) search(ctx context.Context, cid *cid.ID, key, val string, op object.SearchMatchType) (pool.ResObjectSearch, error) {
+func (h *Handler) search(ctx context.Context, cnrID *cid.ID, key, val string, op object.SearchMatchType) (ResObjectSearch, error) {
 	filters := object.NewSearchFilters()
 	filters.AddRootFilter()
 	filters.AddFilter(key, val, op)
 
-	var prm pool.PrmObjectSearch
-	prm.SetContainerID(*cid)
-	prm.SetFilters(filters)
-	if btoken := bearerToken(ctx); btoken != nil {
-		prm.UseBearer(*btoken)
+	prm := PrmObjectSearch{
+		PrmAuth: PrmAuth{
+			BearerToken: bearerToken(ctx),
+		},
+		Container: *cnrID,
+		Filters:   filters,
 	}
 
-	return h.pool.SearchObjects(ctx, prm)
+	return h.frostfs.SearchObjects(ctx, prm)
 }
 
 func (h *Handler) addObjectToZip(zw *zip.Writer, obj *object.Object) (io.Writer, error) {
@@ -153,18 +153,21 @@ func (h *Handler) DownloadZipped(c *fasthttp.RequestCtx) {
 }
 
 func (h *Handler) zipObject(ctx context.Context, zipWriter *zip.Writer, addr oid.Address, btoken *bearer.Token, bufZip []byte) error {
-	var prm pool.PrmObjectGet
-	prm.SetAddress(addr)
-	if btoken != nil {
-		prm.UseBearer(*btoken)
+	prm := PrmObjectRead{
+		PrmAuth: PrmAuth{
+			BearerToken: btoken,
+		},
+		Address:     addr,
+		WithHeader:  true,
+		WithPayload: true,
 	}
 
-	resGet, err := h.pool.GetObject(ctx, prm)
+	resGet, err := h.frostfs.ReadObject(ctx, prm)
 	if err != nil {
 		return fmt.Errorf("get FrostFS object: %v", err)
 	}
 
-	objWriter, err := h.addObjectToZip(zipWriter, &resGet.Header)
+	objWriter, err := h.addObjectToZip(zipWriter, resGet.Head)
 	if err != nil {
 		return fmt.Errorf("zip create header: %v", err)
 	}

internal/handler/frostfs_mock.go

@@ -0,0 +1,260 @@
+package handler
+
+import (
+	"bytes"
+	"context"
+	"crypto/rand"
+	"crypto/sha256"
+	"fmt"
+	"io"
+	"strings"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/checksum"
+	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/acl"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	"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/user"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+)
+
+type TestFrostFS struct {
+	objects    map[string]*object.Object
+	containers map[string]*container.Container
+	accessList map[string]bool
+	key        *keys.PrivateKey
+}
+
+func NewTestFrostFS(key *keys.PrivateKey) *TestFrostFS {
+	return &TestFrostFS{
+		objects:    make(map[string]*object.Object),
+		containers: make(map[string]*container.Container),
+		accessList: make(map[string]bool),
+		key:        key,
+	}
+}
+
+func (t *TestFrostFS) ContainerID(name string) (*cid.ID, error) {
+	for id, cnr := range t.containers {
+		if container.Name(*cnr) == name {
+			var cnrID cid.ID
+			return &cnrID, cnrID.DecodeString(id)
+		}
+	}
+	return nil, fmt.Errorf("not found")
+}
+
+func (t *TestFrostFS) SetContainer(cnrID cid.ID, cnr *container.Container) {
+	t.containers[cnrID.EncodeToString()] = cnr
+}
+
+// AllowUserOperation grants access to object operations.
+// Empty userID and objID means any user and object respectively.
+func (t *TestFrostFS) AllowUserOperation(cnrID cid.ID, userID user.ID, op acl.Op, objID oid.ID) {
+	t.accessList[fmt.Sprintf("%s/%s/%s/%s", cnrID, userID, op, objID)] = true
+}
+
+func (t *TestFrostFS) Container(_ context.Context, prm PrmContainer) (*container.Container, error) {
+	for k, v := range t.containers {
+		if k == prm.ContainerID.EncodeToString() {
+			return v, nil
+		}
+	}
+
+	return nil, fmt.Errorf("container not found %s", prm.ContainerID)
+}
+
+func (t *TestFrostFS) requestOwner(btoken *bearer.Token) user.ID {
+	if btoken != nil {
+		return bearer.ResolveIssuer(*btoken)
+	}
+
+	var owner user.ID
+	user.IDFromKey(&owner, t.key.PrivateKey.PublicKey)
+	return owner
+}
+
+func (t *TestFrostFS) ReadObject(_ context.Context, prm PrmObjectRead) (*ObjectPart, error) {
+	sAddr := prm.Address.EncodeToString()
+
+	if obj, ok := t.objects[sAddr]; ok {
+		owner := t.requestOwner(prm.BearerToken)
+
+		if !t.isAllowed(prm.Address.Container(), owner, acl.OpObjectGet, prm.Address.Object()) {
+			return nil, ErrAccessDenied
+		}
+
+		payload := obj.Payload()
+
+		if prm.PayloadRange[0]+prm.PayloadRange[1] > 0 {
+			off := prm.PayloadRange[0]
+			payload = payload[off : off+prm.PayloadRange[1]]
+		}
+
+		return &ObjectPart{
+			Head:    obj,
+			Payload: io.NopCloser(bytes.NewReader(payload)),
+		}, nil
+	}
+
+	return nil, fmt.Errorf("%w: %s", &apistatus.ObjectNotFound{}, prm.Address)
+}
+func (t *TestFrostFS) CreateObject(_ context.Context, prm PrmObjectCreate) (oid.ID, error) {
+	b := make([]byte, 32)
+	if _, err := io.ReadFull(rand.Reader, b); err != nil {
+		return oid.ID{}, err
+	}
+	var id oid.ID
+	id.SetSHA256(sha256.Sum256(b))
+	prm.Object.SetID(id)
+
+	attrs := prm.Object.Attributes()
+	if prm.ClientCut {
+		a := object.NewAttribute()
+		a.SetKey("s3-client-cut")
+		a.SetValue("true")
+		attrs = append(attrs, *a)
+	}
+
+	prm.Object.SetAttributes(attrs...)
+
+	if prm.Payload != nil {
+		all, err := io.ReadAll(prm.Payload)
+		if err != nil {
+			return oid.ID{}, err
+		}
+		prm.Object.SetPayload(all)
+		prm.Object.SetPayloadSize(uint64(len(all)))
+		var hash checksum.Checksum
+		checksum.Calculate(&hash, checksum.SHA256, all)
+		prm.Object.SetPayloadChecksum(hash)
+	}
+
+	cnrID, _ := prm.Object.ContainerID()
+	objID, _ := prm.Object.ID()
+
+	owner := t.requestOwner(prm.BearerToken)
+
+	if !t.isAllowed(cnrID, owner, acl.OpObjectPut, objID) {
+		return oid.ID{}, ErrAccessDenied
+	}
+
+	addr := newAddress(cnrID, objID)
+	t.objects[addr.EncodeToString()] = prm.Object
+	return objID, nil
+}
+
+type resObjectSearchMock struct {
+	res []oid.ID
+}
+
+func (r *resObjectSearchMock) Read(buf []oid.ID) (int, error) {
+	for i := range buf {
+		if i > len(r.res)-1 {
+			return len(r.res), io.EOF
+		}
+		buf[i] = r.res[i]
+	}
+
+	r.res = r.res[len(buf):]
+
+	return len(buf), nil
+}
+
+func (r *resObjectSearchMock) Iterate(f func(oid.ID) bool) error {
+	for _, id := range r.res {
+		if f(id) {
+			return nil
+		}
+	}
+
+	return nil
+}
+
+func (r *resObjectSearchMock) Close() {}
+
+func (t *TestFrostFS) SearchObjects(_ context.Context, prm PrmObjectSearch) (ResObjectSearch, error) {
+	if !t.isAllowed(prm.Container, t.requestOwner(prm.BearerToken), acl.OpObjectSearch, oid.ID{}) {
+		return nil, ErrAccessDenied
+	}
+
+	cidStr := prm.Container.EncodeToString()
+	var res []oid.ID
+
+	if len(prm.Filters) == 1 { // match root filter
+		for k, v := range t.objects {
+			if strings.Contains(k, cidStr) {
+				id, _ := v.ID()
+				res = append(res, id)
+			}
+		}
+		return &resObjectSearchMock{res: res}, nil
+	}
+
+	filter := prm.Filters[1]
+	if len(prm.Filters) != 2 ||
+		filter.Operation() != object.MatchCommonPrefix && filter.Operation() != object.MatchStringEqual {
+		return nil, fmt.Errorf("usupported filters")
+	}
+
+	for k, v := range t.objects {
+		if strings.Contains(k, cidStr) && isMatched(v.Attributes(), filter) {
+			id, _ := v.ID()
+			res = append(res, id)
+		}
+	}
+
+	return &resObjectSearchMock{res: res}, nil
+}
+
+func isMatched(attributes []object.Attribute, filter object.SearchFilter) bool {
+	for _, attr := range attributes {
+		if attr.Key() == filter.Header() {
+			switch filter.Operation() {
+			case object.MatchStringEqual:
+				return attr.Value() == filter.Value()
+			case object.MatchCommonPrefix:
+				return strings.HasPrefix(attr.Value(), filter.Value())
+			default:
+				return false
+			}
+		}
+	}
+
+	return false
+}
+
+func (t *TestFrostFS) GetEpochDurations(context.Context) (*utils.EpochDurations, error) {
+	return &utils.EpochDurations{
+		CurrentEpoch:  10,
+		MsPerBlock:    1000,
+		BlockPerEpoch: 100,
+	}, nil
+}
+
+func (t *TestFrostFS) isAllowed(cnrID cid.ID, userID user.ID, op acl.Op, objID oid.ID) bool {
+	keysToCheck := []string{
+		fmt.Sprintf("%s/%s/%s/%s", cnrID, userID, op, objID),
+		fmt.Sprintf("%s/%s/%s/%s", cnrID, userID, op, oid.ID{}),
+		fmt.Sprintf("%s/%s/%s/%s", cnrID, user.ID{}, op, objID),
+		fmt.Sprintf("%s/%s/%s/%s", cnrID, user.ID{}, op, oid.ID{}),
+	}
+
+	for _, key := range keysToCheck {
+		if t.accessList[key] {
+			return true
+		}
+	}
+	return false
+}
+
+func newAddress(cnr cid.ID, obj oid.ID) oid.Address {
+	var addr oid.Address
+	addr.SetContainer(cnr)
+	addr.SetObject(obj)
+	return addr
+}

internal/handler/handler.go

@@ -12,16 +12,15 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler/middleware"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tree"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
 	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
 	"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/object"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/zap"
@@ -35,20 +34,125 @@ type Config interface {
 	NamespaceHeader() string
 }
 
+// PrmContainer groups parameters of FrostFS.Container operation.
+type PrmContainer struct {
+	// Container identifier.
+	ContainerID cid.ID
+}
+
+// PrmAuth groups authentication parameters for the FrostFS operation.
+type PrmAuth struct {
+	// Bearer token to be used for the operation. Overlaps PrivateKey. Optional.
+	BearerToken *bearer.Token
+}
+
+// PrmObjectRead groups parameters of FrostFS.ReadObject operation.
+type PrmObjectRead struct {
+	// Authentication parameters.
+	PrmAuth
+
+	// Address to read the object header from.
+	Address oid.Address
+
+	// Flag to read object header.
+	WithHeader bool
+
+	// Flag to read object payload. False overlaps payload range.
+	WithPayload bool
+
+	// Offset-length range of the object payload to be read.
+	PayloadRange [2]uint64
+}
+
+// ObjectPart represents partially read FrostFS object.
+type ObjectPart struct {
+	// Object header with optional in-memory payload part.
+	Head *object.Object
+
+	// Object payload part encapsulated in io.Reader primitive.
+	// Returns ErrAccessDenied on read access violation.
+	Payload io.ReadCloser
+}
+
+// PrmObjectCreate groups parameters of FrostFS.CreateObject operation.
+type PrmObjectCreate struct {
+	// Authentication parameters.
+	PrmAuth
+
+	Object *object.Object
+
+	// Object payload encapsulated in io.Reader primitive.
+	Payload io.Reader
+
+	// Enables client side object preparing.
+	ClientCut bool
+
+	// Disables using Tillich-Zémor hash for payload.
+	WithoutHomomorphicHash bool
+
+	// Sets max buffer size to read payload.
+	BufferMaxSize uint64
+}
+
+// PrmObjectSearch groups parameters of FrostFS.sear SearchObjects operation.
+type PrmObjectSearch struct {
+	// Authentication parameters.
+	PrmAuth
+
+	// Container to select the objects from.
+	Container cid.ID
+
+	Filters object.SearchFilters
+}
+
+type ResObjectSearch interface {
+	Read(buf []oid.ID) (int, error)
+	Iterate(f func(oid.ID) bool) error
+	Close()
+}
+
+var (
+	// ErrAccessDenied is returned from FrostFS in case of access violation.
+	ErrAccessDenied = errors.New("access denied")
+	// ErrGatewayTimeout is returned from FrostFS in case of timeout, deadline exceeded etc.
+	ErrGatewayTimeout = errors.New("gateway timeout")
+)
+
+// FrostFS represents virtual connection to FrostFS network.
+type FrostFS interface {
+	Container(context.Context, PrmContainer) (*container.Container, error)
+	ReadObject(context.Context, PrmObjectRead) (*ObjectPart, error)
+	CreateObject(context.Context, PrmObjectCreate) (oid.ID, error)
+	SearchObjects(context.Context, PrmObjectSearch) (ResObjectSearch, error)
+	utils.EpochInfoFetcher
+}
+
+type ContainerResolver interface {
+	Resolve(ctx context.Context, name string) (*cid.ID, error)
+}
+
 type Handler struct {
 	log               *zap.Logger
-	pool              *pool.Pool
+	frostfs           FrostFS
 	ownerID           *user.ID
 	config            Config
-	containerResolver *resolver.ContainerResolver
+	containerResolver ContainerResolver
 	tree              *tree.Tree
 	cache             *cache.BucketCache
 }
 
-func New(params *utils.AppParams, config Config, tree *tree.Tree) *Handler {
+type AppParams struct {
+	Logger   *zap.Logger
+	FrostFS  FrostFS
+	Owner    *user.ID
+	Resolver ContainerResolver
+	Cache    *cache.BucketCache
+}
+
+func New(params *AppParams, config Config, tree *tree.Tree) *Handler {
 	return &Handler{
 		log:               params.Logger,
-		pool:              params.Pool,
+		frostfs:           params.FrostFS,
 		ownerID:           params.Owner,
 		config:            config,
 		containerResolver: params.Resolver,
@@ -235,8 +339,8 @@ func (h *Handler) getBucketInfo(ctx context.Context, containerName string, log *
 }
 
 func (h *Handler) readContainer(ctx context.Context, cnrID cid.ID) (*data.BucketInfo, error) {
-	prm := pool.PrmContainerGet{ContainerID: cnrID}
-	res, err := h.pool.GetContainer(ctx, prm)
+	prm := PrmContainer{ContainerID: cnrID}
+	res, err := h.frostfs.Container(ctx, prm)
 	if err != nil {
 		return nil, fmt.Errorf("get frostfs container '%s': %w", cnrID.String(), err)
 	}
@@ -246,12 +350,12 @@ func (h *Handler) readContainer(ctx context.Context, cnrID cid.ID) (*data.Bucket
 		Name: cnrID.EncodeToString(),
 	}
 
-	if domain := container.ReadDomain(res); domain.Name() != "" {
+	if domain := container.ReadDomain(*res); domain.Name() != "" {
 		bktInfo.Name = domain.Name()
 		bktInfo.Zone = domain.Zone()
 	}
 
-	bktInfo.HomomorphicHashDisabled = container.IsHomomorphicHashingDisabled(res)
+	bktInfo.HomomorphicHashDisabled = container.IsHomomorphicHashingDisabled(*res)
 
 	return bktInfo, err
 }

internal/handler/handler_test.go

@@ -0,0 +1,296 @@
+package handler
+
+import (
+	"archive/zip"
+	"bytes"
+	"context"
+	"encoding/json"
+	"io"
+	"mime/multipart"
+	"net/http"
+	"testing"
+	"time"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/cache"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler/middleware"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tree"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/acl"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+	cidtest "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id/test"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
+	"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/user"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/stretchr/testify/require"
+	"github.com/valyala/fasthttp"
+	"go.uber.org/zap"
+)
+
+type treeClientMock struct {
+}
+
+func (t *treeClientMock) GetNodes(context.Context, *tree.GetNodesParams) ([]tree.NodeResponse, error) {
+	return nil, nil
+}
+
+type configMock struct {
+}
+
+func (c *configMock) DefaultTimestamp() bool {
+	return false
+}
+
+func (c *configMock) ZipCompression() bool {
+	return false
+}
+
+func (c *configMock) ClientCut() bool {
+	return false
+}
+
+func (c *configMock) BufferMaxSizeForPut() uint64 {
+	return 0
+}
+
+func (c *configMock) NamespaceHeader() string {
+	return ""
+}
+
+type handlerContext struct {
+	key   *keys.PrivateKey
+	owner user.ID
+
+	h       *Handler
+	frostfs *TestFrostFS
+	tree    *treeClientMock
+	cfg     *configMock
+}
+
+func (hc *handlerContext) Handler() *Handler {
+	return hc.h
+}
+
+func prepareHandlerContext() (*handlerContext, error) {
+	logger, err := zap.NewDevelopment()
+	if err != nil {
+		return nil, err
+	}
+
+	key, err := keys.NewPrivateKey()
+	if err != nil {
+		return nil, err
+	}
+
+	var owner user.ID
+	user.IDFromKey(&owner, key.PrivateKey.PublicKey)
+
+	testFrostFS := NewTestFrostFS(key)
+
+	testResolver := &resolver.Resolver{Name: "test_resolver"}
+	testResolver.SetResolveFunc(func(_ context.Context, name string) (*cid.ID, error) {
+		return testFrostFS.ContainerID(name)
+	})
+
+	params := &AppParams{
+		Logger:   logger,
+		FrostFS:  testFrostFS,
+		Owner:    &owner,
+		Resolver: testResolver,
+		Cache: cache.NewBucketCache(&cache.Config{
+			Size:     1,
+			Lifetime: 1,
+			Logger:   logger,
+		}),
+	}
+
+	treeMock := &treeClientMock{}
+	cfgMock := &configMock{}
+
+	handler := New(params, cfgMock, tree.NewTree(treeMock))
+
+	return &handlerContext{
+		key:     key,
+		owner:   owner,
+		h:       handler,
+		frostfs: testFrostFS,
+		tree:    treeMock,
+		cfg:     cfgMock,
+	}, nil
+}
+
+func (hc *handlerContext) prepareContainer(name string, basicACL acl.Basic) (cid.ID, *container.Container, error) {
+	var pp netmap.PlacementPolicy
+	err := pp.DecodeString("REP 1")
+	if err != nil {
+		return cid.ID{}, nil, err
+	}
+
+	var cnr container.Container
+	cnr.Init()
+	cnr.SetOwner(hc.owner)
+	cnr.SetPlacementPolicy(pp)
+	cnr.SetBasicACL(basicACL)
+
+	var domain container.Domain
+	domain.SetName(name)
+	container.WriteDomain(&cnr, domain)
+	container.SetName(&cnr, name)
+	container.SetCreationTime(&cnr, time.Now())
+
+	cnrID := cidtest.ID()
+
+	for op := acl.OpObjectGet; op < acl.OpObjectHash; op++ {
+		hc.frostfs.AllowUserOperation(cnrID, hc.owner, op, oid.ID{})
+		if basicACL.IsOpAllowed(op, acl.RoleOthers) {
+			hc.frostfs.AllowUserOperation(cnrID, user.ID{}, op, oid.ID{})
+		}
+	}
+
+	return cnrID, &cnr, nil
+}
+
+func TestBasic(t *testing.T) {
+	hc, err := prepareHandlerContext()
+	require.NoError(t, err)
+
+	bktName := "bucket"
+	cnrID, cnr, err := hc.prepareContainer(bktName, acl.PublicRWExtended)
+	require.NoError(t, err)
+	hc.frostfs.SetContainer(cnrID, cnr)
+
+	ctx := context.Background()
+	ctx = middleware.SetNamespace(ctx, "")
+
+	content := "hello"
+	r, err := prepareUploadRequest(ctx, cnrID.EncodeToString(), content)
+	require.NoError(t, err)
+
+	hc.Handler().Upload(r)
+	require.Equal(t, r.Response.StatusCode(), http.StatusOK)
+
+	var putRes putResponse
+	err = json.Unmarshal(r.Response.Body(), &putRes)
+	require.NoError(t, err)
+
+	obj := hc.frostfs.objects[putRes.ContainerID+"/"+putRes.ObjectID]
+	attr := object.NewAttribute()
+	attr.SetKey(object.AttributeFilePath)
+	attr.SetValue(objFileName)
+	obj.SetAttributes(append(obj.Attributes(), *attr)...)
+
+	t.Run("get", func(t *testing.T) {
+		r = prepareGetRequest(ctx, cnrID.EncodeToString(), putRes.ObjectID)
+		hc.Handler().DownloadByAddressOrBucketName(r)
+		require.Equal(t, content, string(r.Response.Body()))
+	})
+
+	t.Run("head", func(t *testing.T) {
+		r = prepareGetRequest(ctx, cnrID.EncodeToString(), putRes.ObjectID)
+		hc.Handler().HeadByAddressOrBucketName(r)
+		require.Equal(t, putRes.ObjectID, string(r.Response.Header.Peek(hdrObjectID)))
+		require.Equal(t, putRes.ContainerID, string(r.Response.Header.Peek(hdrContainerID)))
+	})
+
+	t.Run("get by attribute", func(t *testing.T) {
+		r = prepareGetByAttributeRequest(ctx, bktName, keyAttr, valAttr)
+		hc.Handler().DownloadByAttribute(r)
+		require.Equal(t, content, string(r.Response.Body()))
+	})
+
+	t.Run("head by attribute", func(t *testing.T) {
+		r = prepareGetByAttributeRequest(ctx, bktName, keyAttr, valAttr)
+		hc.Handler().HeadByAttribute(r)
+		require.Equal(t, putRes.ObjectID, string(r.Response.Header.Peek(hdrObjectID)))
+		require.Equal(t, putRes.ContainerID, string(r.Response.Header.Peek(hdrContainerID)))
+	})
+
+	t.Run("zip", func(t *testing.T) {
+		r = prepareGetZipped(ctx, bktName, "")
+		hc.Handler().DownloadZipped(r)
+
+		readerAt := bytes.NewReader(r.Response.Body())
+		zipReader, err := zip.NewReader(readerAt, int64(len(r.Response.Body())))
+		require.NoError(t, err)
+		require.Len(t, zipReader.File, 1)
+		require.Equal(t, objFileName, zipReader.File[0].Name)
+		f, err := zipReader.File[0].Open()
+		require.NoError(t, err)
+		defer func() {
+			inErr := f.Close()
+			require.NoError(t, inErr)
+		}()
+		data, err := io.ReadAll(f)
+		require.NoError(t, err)
+		require.Equal(t, content, string(data))
+	})
+}
+
+func prepareUploadRequest(ctx context.Context, bucket, content string) (*fasthttp.RequestCtx, error) {
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+	r.SetUserValue("cid", bucket)
+	return r, fillMultipartBody(r, content)
+}
+
+func prepareGetRequest(ctx context.Context, bucket, objID string) *fasthttp.RequestCtx {
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+	r.SetUserValue("cid", bucket)
+	r.SetUserValue("oid", objID)
+	return r
+}
+
+func prepareGetByAttributeRequest(ctx context.Context, bucket, attrKey, attrVal string) *fasthttp.RequestCtx {
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+	r.SetUserValue("cid", bucket)
+	r.SetUserValue("attr_key", attrKey)
+	r.SetUserValue("attr_val", attrVal)
+	return r
+}
+
+func prepareGetZipped(ctx context.Context, bucket, prefix string) *fasthttp.RequestCtx {
+	r := new(fasthttp.RequestCtx)
+	utils.SetContextToRequest(ctx, r)
+	r.SetUserValue("cid", bucket)
+	r.SetUserValue("prefix", prefix)
+	return r
+}
+
+const (
+	keyAttr     = "User-Attribute"
+	valAttr     = "user value"
+	objFileName = "newFile.txt"
+)
+
+func fillMultipartBody(r *fasthttp.RequestCtx, content string) error {
+	attributes := map[string]string{
+		object.AttributeFileName: objFileName,
+		keyAttr:                  valAttr,
+	}
+
+	var buff bytes.Buffer
+	w := multipart.NewWriter(&buff)
+	fw, err := w.CreateFormFile("file", attributes[object.AttributeFileName])
+	if err != nil {
+		return err
+	}
+
+	if _, err = io.Copy(fw, bytes.NewBufferString(content)); err != nil {
+		return err
+	}
+
+	if err = w.Close(); err != nil {
+		return err
+	}
+
+	r.Request.SetBodyStream(&buff, buff.Len())
+	r.Request.Header.Set("Content-Type", w.FormDataContentType())
+	r.Request.Header.Set("X-Attribute-"+keyAttr, valAttr)
+
+	return nil
+}

internal/handler/head.go

@@ -11,7 +11,6 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
 	"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/pool"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/zap"
 )
@@ -30,21 +29,23 @@ func (h *Handler) headObject(ctx context.Context, req request, objectAddress oid
 
 	btoken := bearerToken(ctx)
 
-	var prm pool.PrmObjectHead
-	prm.SetAddress(objectAddress)
-	if btoken != nil {
-		prm.UseBearer(*btoken)
+	prm := PrmObjectRead{
+		PrmAuth: PrmAuth{
+			BearerToken: btoken,
+		},
+		Address:    objectAddress,
+		WithHeader: true,
 	}
 
-	obj, err := h.pool.HeadObject(ctx, prm)
+	obj, err := h.frostfs.ReadObject(ctx, prm)
 	if err != nil {
 		req.handleFrostFSErr(err, start)
 		return
 	}
 
-	req.Response.Header.Set(fasthttp.HeaderContentLength, strconv.FormatUint(obj.PayloadSize(), 10))
+	req.Response.Header.Set(fasthttp.HeaderContentLength, strconv.FormatUint(obj.Head.PayloadSize(), 10))
 	var contentType string
-	for _, attr := range obj.Attributes() {
+	for _, attr := range obj.Head.Attributes() {
 		key := attr.Key()
 		val := attr.Value()
 		if !isValidToken(key) || !isValidValue(val) {
@@ -70,22 +71,24 @@ func (h *Handler) headObject(ctx context.Context, req request, objectAddress oid
 		}
 	}
 
-	idsToResponse(&req.Response, &obj)
+	idsToResponse(&req.Response, obj.Head)
 
 	if len(contentType) == 0 {
-		contentType, _, err = readContentType(obj.PayloadSize(), func(sz uint64) (io.Reader, error) {
-			var prmRange pool.PrmObjectRange
-			prmRange.SetAddress(objectAddress)
-			prmRange.SetLength(sz)
-			if btoken != nil {
-				prmRange.UseBearer(*btoken)
+		contentType, _, err = readContentType(obj.Head.PayloadSize(), func(sz uint64) (io.Reader, error) {
+			prmRange := PrmObjectRead{
+				PrmAuth: PrmAuth{
+					BearerToken: btoken,
+				},
+				Address:      objectAddress,
+				WithPayload:  true,
+				PayloadRange: [2]uint64{0, sz},
 			}
 
-			resObj, err := h.pool.ObjectRange(ctx, prmRange)
+			resObj, err := h.frostfs.ReadObject(ctx, prmRange)
 			if err != nil {
 				return nil, err
 			}
-			return &resObj, nil
+			return resObj.Payload, nil
 		})
 		if err != nil && err != io.EOF {
 			req.handleFrostFSErr(err, start)

internal/handler/reader.go

@@ -14,7 +14,6 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
 	"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/pool"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/zap"
 )
@@ -56,13 +55,16 @@ func (h *Handler) receiveFile(ctx context.Context, req request, objectAddress oi
 		filename string
 	)
 
-	var prm pool.PrmObjectGet
-	prm.SetAddress(objectAddress)
-	if btoken := bearerToken(ctx); btoken != nil {
-		prm.UseBearer(*btoken)
+	prm := PrmObjectRead{
+		PrmAuth: PrmAuth{
+			BearerToken: bearerToken(ctx),
+		},
+		Address:     objectAddress,
+		WithHeader:  true,
+		WithPayload: true,
 	}
 
-	rObj, err := h.pool.GetObject(ctx, prm)
+	rObj, err := h.frostfs.ReadObject(ctx, prm)
 	if err != nil {
 		req.handleFrostFSErr(err, start)
 		return
@@ -74,11 +76,11 @@ func (h *Handler) receiveFile(ctx context.Context, req request, objectAddress oi
 		dis = "attachment"
 	}
 
-	payloadSize := rObj.Header.PayloadSize()
+	payloadSize := rObj.Head.PayloadSize()
 
 	req.Response.Header.Set(fasthttp.HeaderContentLength, strconv.FormatUint(payloadSize, 10))
 	var contentType string
-	for _, attr := range rObj.Header.Attributes() {
+	for _, attr := range rObj.Head.Attributes() {
 		key := attr.Key()
 		val := attr.Value()
 		if !isValidToken(key) || !isValidValue(val) {
@@ -107,7 +109,7 @@ func (h *Handler) receiveFile(ctx context.Context, req request, objectAddress oi
 		}
 	}
 
-	idsToResponse(&req.Response, &rObj.Header)
+	idsToResponse(&req.Response, rObj.Head)
 
 	if len(contentType) == 0 {
 		// determine the Content-Type from the payload head

internal/handler/upload.go

@@ -15,7 +15,6 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
 	"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/pool"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/zap"
 )
@@ -98,7 +97,7 @@ func (h *Handler) Upload(req *fasthttp.RequestCtx) {
 		}
 	}
 
-	if err = utils.PrepareExpirationHeader(req, h.pool, filtered, now); err != nil {
+	if err = utils.PrepareExpirationHeader(req, h.frostfs, filtered, now); err != nil {
 		log.Error(logs.CouldNotPrepareExpirationHeader, zap.Error(err))
 		response.Error(req, "could not prepare expiration header: "+err.Error(), fasthttp.StatusBadRequest)
 		return
@@ -132,19 +131,18 @@ func (h *Handler) Upload(req *fasthttp.RequestCtx) {
 	obj.SetOwnerID(*h.ownerID)
 	obj.SetAttributes(attributes...)
 
-	var prm pool.PrmObjectPut
-	prm.SetHeader(*obj)
-	prm.SetPayload(file)
-	prm.SetClientCut(h.config.ClientCut())
-	prm.SetBufferMaxSize(h.config.BufferMaxSizeForPut())
-	prm.WithoutHomomorphicHash(bktInfo.HomomorphicHashDisabled)
-
-	bt := h.fetchBearerToken(ctx)
-	if bt != nil {
-		prm.UseBearer(*bt)
+	prm := PrmObjectCreate{
+		PrmAuth: PrmAuth{
+			BearerToken: h.fetchBearerToken(ctx),
+		},
+		Object:                 obj,
+		Payload:                file,
+		ClientCut:              h.config.ClientCut(),
+		WithoutHomomorphicHash: bktInfo.HomomorphicHashDisabled,
+		BufferMaxSize:          h.config.BufferMaxSizeForPut(),
 	}
 
-	if idObj, err = h.pool.PutObject(ctx, prm); err != nil {
+	if idObj, err = h.frostfs.CreateObject(ctx, prm); err != nil {
 		h.handlePutFrostFSErr(req, err)
 		return
 	}

utils/attributes.go

@@ -11,10 +11,18 @@ import (
 	"time"
 	"unicode"
 	"unicode/utf8"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 )
 
+type EpochDurations struct {
+	CurrentEpoch  uint64
+	MsPerBlock    int64
+	BlockPerEpoch uint64
+}
+
+type EpochInfoFetcher interface {
+	GetEpochDurations(context.Context) (*EpochDurations, error)
+}
+
 const (
 	UserAttributeHeaderPrefix = "X-Attribute-"
 )
@@ -151,7 +159,7 @@ func title(str string) string {
 	return string(r0) + str[size:]
 }
 
-func PrepareExpirationHeader(ctx context.Context, p *pool.Pool, headers map[string]string, now time.Time) error {
+func PrepareExpirationHeader(ctx context.Context, epochFetcher EpochInfoFetcher, headers map[string]string, now time.Time) error {
 	formatsNum := 0
 	index := -1
 	for i, transformer := range transformers {
@@ -165,7 +173,7 @@ func PrepareExpirationHeader(ctx context.Context, p *pool.Pool, headers map[stri
 	case 0:
 		return nil
 	case 1:
-		epochDuration, err := GetEpochDurations(ctx, p)
+		epochDuration, err := epochFetcher.GetEpochDurations(ctx)
 		if err != nil {
 			return fmt.Errorf("couldn't get epoch durations from network info: %w", err)
 		}

utils/params.go

@@ -1,17 +0,0 @@
-package utils
-
-import (
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/cache"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/resolver"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
-	"go.uber.org/zap"
-)
-
-type AppParams struct {
-	Logger   *zap.Logger
-	Pool     *pool.Pool
-	Owner    *user.ID
-	Resolver *resolver.ContainerResolver
-	Cache    *cache.BucketCache
-}

utils/util.go

@@ -2,36 +2,10 @@ package utils
 
 import (
 	"context"
-	"fmt"
 
-	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool"
 	"github.com/valyala/fasthttp"
 )
 
-type EpochDurations struct {
-	CurrentEpoch  uint64
-	MsPerBlock    int64
-	BlockPerEpoch uint64
-}
-
-func GetEpochDurations(ctx context.Context, p *pool.Pool) (*EpochDurations, error) {
-	networkInfo, err := p.NetworkInfo(ctx)
-	if err != nil {
-		return nil, err
-	}
-
-	res := &EpochDurations{
-		CurrentEpoch:  networkInfo.CurrentEpoch(),
-		MsPerBlock:    networkInfo.MsPerBlock(),
-		BlockPerEpoch: networkInfo.EpochDuration(),
-	}
-
-	if res.BlockPerEpoch == 0 {
-		return nil, fmt.Errorf("EpochDuration is empty")
-	}
-	return res, nil
-}
-
 // SetContextToRequest adds new context to fasthttp request.
 func SetContextToRequest(ctx context.Context, c *fasthttp.RequestCtx) {
 	c.SetUserValue("context", ctx)