From d19ce030722338c6fcfe7f291b45a5ee75a005fd Mon Sep 17 00:00:00 2001
From: Roman Khimov <roman@nspcc.ru>
Date: Wed, 26 May 2021 19:48:27 +0300
Subject: [PATCH] *: drop old sdk dependecies, bump neofs-api-go version

I'm not sure it works, but it's enough code-wise for now. We're reusing some
http-gw components here that are to be moved into sdk-go in future.

Signed-off-by: Roman Khimov <roman@nspcc.ru>
---
 api/auth/center.go                   | 10 +--
 api/layer/container.go               | 20 +++++-
 api/layer/layer.go                   | 25 ++++---
 api/layer/object.go                  | 55 ++++++++++++----
 api/user-auth.go                     |  6 +-
 authmate/authmate.go                 | 57 ++++++++++++----
 cmd/authmate/main.go                 | 32 +++++----
 cmd/s3-gw/app-healthy.go             |  1 +
 cmd/s3-gw/app-settings.go            | 14 ++--
 cmd/s3-gw/app.go                     | 97 ++++++++--------------------
 cmd/s3-gw/main.go                    |  3 +-
 creds/accessbox/bearer_token_test.go |  2 +-
 creds/bearer/credentials.go          | 45 +++++++++++--
 go.mod                               |  8 +--
 go.sum                               | 51 +++++++++++----
 15 files changed, 263 insertions(+), 163 deletions(-)

diff --git a/api/auth/center.go b/api/auth/center.go
index cc889a26..da4945e5 100644
--- a/api/auth/center.go
+++ b/api/auth/center.go
@@ -12,12 +12,12 @@ import (
 
 	"github.com/aws/aws-sdk-go/aws/credentials"
 	v4 "github.com/aws/aws-sdk-go/aws/signer/v4"
-	sdk "github.com/nspcc-dev/cdn-sdk"
-	"github.com/nspcc-dev/neofs-s3-gw/creds/bearer"
-	"github.com/nspcc-dev/neofs-s3-gw/creds/hcs"
 	"github.com/nspcc-dev/neofs-api-go/pkg/object"
 	"github.com/nspcc-dev/neofs-api-go/pkg/token"
+	sdk "github.com/nspcc-dev/neofs-http-gw/neofs"
 	"github.com/nspcc-dev/neofs-s3-gw/authmate"
+	"github.com/nspcc-dev/neofs-s3-gw/creds/bearer"
+	"github.com/nspcc-dev/neofs-s3-gw/creds/hcs"
 	"go.uber.org/zap"
 )
 
@@ -36,7 +36,7 @@ type (
 
 	// Params stores node connection parameters.
 	Params struct {
-		Client     sdk.Client
+		Client     sdk.ClientPlant
 		Logger     *zap.Logger
 		Credential hcs.Credentials
 	}
@@ -55,7 +55,7 @@ func (p prs) Seek(_ int64, _ int) (int64, error) {
 var _ io.ReadSeeker = prs(0)
 
 // New creates an instance of AuthCenter.
-func New(obj sdk.ObjectClient, key hcs.PrivateKey) Center {
+func New(obj sdk.ClientPlant, key hcs.PrivateKey) Center {
 	return &center{
 		cli: bearer.New(obj, key),
 		reg: &regexpSubmatcher{re: authorizationFieldRegexp},
diff --git a/api/layer/container.go b/api/layer/container.go
index 439d91dc..524da132 100644
--- a/api/layer/container.go
+++ b/api/layer/container.go
@@ -42,7 +42,15 @@ func (n *layer) containerInfo(ctx context.Context, cid *container.ID) (*BucketIn
 		}
 	)
 
-	if res, err = n.cli.Container().Get(ctx, cid); err != nil {
+	conn, _, err := n.cli.ConnectionArtifacts()
+	if err != nil {
+		n.log.Error("failed to get connection from the pool",
+			zap.String("request_id", rid),
+			zap.Error(err))
+		return nil, err
+	}
+	res, err = conn.GetContainer(ctx, cid)
+	if err != nil {
 		n.log.Error("could not fetch container",
 			zap.Stringer("cid", cid),
 			zap.String("request_id", rid),
@@ -84,7 +92,15 @@ func (n *layer) containerList(ctx context.Context) ([]*BucketInfo, error) {
 		rid = api.GetRequestID(ctx)
 	)
 
-	if res, err = n.cli.Container().List(ctx, own); err != nil {
+	conn, _, err := n.cli.ConnectionArtifacts()
+	if err != nil {
+		n.log.Error("failed to get connection from the pool",
+			zap.String("request_id", rid),
+			zap.Error(err))
+		return nil, err
+	}
+	res, err = conn.ListContainers(ctx, own)
+	if err != nil {
 		n.log.Error("could not fetch container",
 			zap.String("request_id", rid),
 			zap.Error(err))
diff --git a/api/layer/layer.go b/api/layer/layer.go
index f93c2a6c..2838b448 100644
--- a/api/layer/layer.go
+++ b/api/layer/layer.go
@@ -8,13 +8,15 @@ import (
 	"net/url"
 	"time"
 
-	sdk "github.com/nspcc-dev/cdn-sdk"
-	"github.com/nspcc-dev/neofs-s3-gw/creds/neofs"
-	"github.com/nspcc-dev/cdn-sdk/pool"
+	"github.com/nspcc-dev/neofs-api-go/pkg/client"
 	"github.com/nspcc-dev/neofs-api-go/pkg/container"
 	"github.com/nspcc-dev/neofs-api-go/pkg/object"
 	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
+	"github.com/nspcc-dev/neofs-api-go/pkg/token"
+	"github.com/nspcc-dev/neofs-http-gw/connections"
+	sdk "github.com/nspcc-dev/neofs-http-gw/neofs"
 	"github.com/nspcc-dev/neofs-s3-gw/api"
+	"github.com/nspcc-dev/neofs-s3-gw/creds/neofs"
 	"go.uber.org/zap"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
@@ -22,13 +24,13 @@ import (
 
 type (
 	layer struct {
-		cli sdk.Client
+		cli sdk.ClientPlant
 		log *zap.Logger
 	}
 
 	// Params stores basic API parameters.
 	Params struct {
-		Pool       pool.Client
+		Pool       connections.Pool
 		Logger     *zap.Logger
 		Timeout    time.Duration
 		Credential neofs.Credentials
@@ -96,7 +98,7 @@ var (
 
 // NewLayer creates instance of layer. It checks credentials
 // and establishes gRPC connection with node.
-func NewLayer(log *zap.Logger, cli sdk.Client) Client {
+func NewLayer(log *zap.Logger, cli sdk.ClientPlant) Client {
 	return &layer{
 		cli: cli,
 		log: log,
@@ -105,16 +107,21 @@ func NewLayer(log *zap.Logger, cli sdk.Client) Client {
 
 // Owner returns owner id from BearerToken (context) or from client owner.
 func (n *layer) Owner(ctx context.Context) *owner.ID {
-	if tkn, err := sdk.BearerToken(ctx); err != nil && tkn != nil {
+	if tkn, ok := ctx.Value(api.BearerTokenKey).(*token.BearerToken); ok && tkn != nil {
 		return tkn.Issuer()
 	}
 
-	return n.cli.Owner()
+	return n.cli.OwnerID()
 }
 
 // Get NeoFS Object by refs.Address (should be used by auth.Center).
 func (n *layer) Get(ctx context.Context, address *object.Address) (*object.Object, error) {
-	return n.cli.Object().Get(ctx, address)
+	conn, tok, err := n.cli.ConnectionArtifacts()
+	if err != nil {
+		return nil, err
+	}
+	ops := new(client.GetObjectParams).WithAddress(address)
+	return conn.GetObject(ctx, ops, client.WithSession(tok))
 }
 
 // GetBucketInfo returns bucket info by name.
diff --git a/api/layer/object.go b/api/layer/object.go
index c1232420..c24e0e86 100644
--- a/api/layer/object.go
+++ b/api/layer/object.go
@@ -8,7 +8,7 @@ import (
 	"strconv"
 	"time"
 
-	sdk "github.com/nspcc-dev/cdn-sdk"
+	"github.com/nspcc-dev/neofs-api-go/pkg/client"
 	"github.com/nspcc-dev/neofs-api-go/pkg/container"
 	"github.com/nspcc-dev/neofs-api-go/pkg/object"
 	"github.com/nspcc-dev/neofs-s3-gw/api"
@@ -33,16 +33,20 @@ type (
 
 // objectSearch returns all available objects by search params.
 func (n *layer) objectSearch(ctx context.Context, p *findParams) ([]*object.ID, error) {
-	opts := []sdk.ObjectSearchOption{
-		sdk.SearchRootObjects(),
-	}
+	var opts object.SearchFilters
+
+	opts.AddRootFilter()
 
 	if filename, err := url.QueryUnescape(p.val); err != nil {
 		return nil, err
 	} else if filename != "" {
-		opts = append(opts, sdk.SearchByFilename(filename))
+		opts.AddFilter(object.AttributeFileName, filename, object.MatchStringEqual)
 	}
-	return n.cli.Object().Search(ctx, p.cid, opts...)
+	conn, _, err := n.cli.ConnectionArtifacts()
+	if err != nil {
+		return nil, err
+	}
+	return conn.SearchObject(ctx, new(client.SearchObjectParams).WithContainerID(p.cid).WithSearchFilters(opts))
 }
 
 // objectFindID returns object id (uuid) based on it's nice name in s3. If
@@ -61,14 +65,24 @@ func (n *layer) objectFindID(ctx context.Context, p *findParams) (*object.ID, er
 
 // objectHead returns all object's headers.
 func (n *layer) objectHead(ctx context.Context, address *object.Address) (*object.Object, error) {
-	return n.cli.Object().Head(ctx, address, sdk.WithFullHeaders())
+	conn, _, err := n.cli.ConnectionArtifacts()
+	if err != nil {
+		return nil, err
+	}
+	ops := new(client.ObjectHeaderParams).WithAddress(address).WithAllFields()
+	return conn.GetObjectHeader(ctx, ops)
 }
 
 // objectGet and write it into provided io.Reader.
 func (n *layer) objectGet(ctx context.Context, p *getParams) (*object.Object, error) {
+	conn, tok, err := n.cli.ConnectionArtifacts()
+	if err != nil {
+		return nil, err
+	}
 	// prepare length/offset writer
 	w := newWriter(p.Writer, p.offset, p.length)
-	return n.cli.Object().Get(ctx, p.address, sdk.WithGetWriter(w))
+	ops := new(client.GetObjectParams).WithAddress(p.address).WithPayloadWriter(w)
+	return conn.GetObject(ctx, ops, client.WithSession(tok))
 }
 
 // objectPut into NeoFS, took payload from io.Reader.
@@ -78,8 +92,6 @@ func (n *layer) objectPut(ctx context.Context, p *PutObjectParams) (*ObjectInfo,
 		obj string
 		bkt *BucketInfo
 		own = n.Owner(ctx)
-
-		address *object.Address
 	)
 
 	if obj, err = url.QueryUnescape(p.Object); err != nil {
@@ -123,12 +135,23 @@ func (n *layer) objectPut(ctx context.Context, p *PutObjectParams) (*ObjectInfo,
 	raw.SetAttributes(attributes...)
 
 	r := newDetector(p.Reader)
-	if address, err = n.cli.Object().Put(ctx, raw.Object(), sdk.WithPutReader(r)); err != nil {
+	conn, tok, err := n.cli.ConnectionArtifacts()
+	if err != nil {
+		return nil, err
+	}
+
+	ops := new(client.PutObjectParams).WithObject(raw.Object()).WithPayloadReader(r)
+	oid, err := conn.PutObject(
+		ctx,
+		ops,
+		client.WithSession(tok),
+	)
+	if err != nil {
 		return nil, err
 	}
 
 	return &ObjectInfo{
-		id: address.ObjectID(),
+		id: oid,
 
 		Owner:       own,
 		Bucket:      p.Bucket,
@@ -142,5 +165,11 @@ func (n *layer) objectPut(ctx context.Context, p *PutObjectParams) (*ObjectInfo,
 
 // objectDelete puts tombstone object into neofs.
 func (n *layer) objectDelete(ctx context.Context, address *object.Address) error {
-	return n.cli.Object().Delete(ctx, address)
+	conn, _, err := n.cli.ConnectionArtifacts()
+	if err != nil {
+		return err
+	}
+	dop := new(client.DeleteObjectParams)
+	dop.WithAddress(address)
+	return conn.DeleteObject(ctx, dop)
 }
diff --git a/api/user-auth.go b/api/user-auth.go
index 4e00112a..9f0a398d 100644
--- a/api/user-auth.go
+++ b/api/user-auth.go
@@ -1,14 +1,16 @@
 package api
 
 import (
+	"context"
 	"net/http"
 
 	"github.com/gorilla/mux"
-	sdk "github.com/nspcc-dev/cdn-sdk"
 	"github.com/nspcc-dev/neofs-s3-gw/api/auth"
 	"go.uber.org/zap"
 )
 
+const BearerTokenKey = "__context_bearer_token_key"
+
 // AttachUserAuth adds user authentication via center to router using log for logging.
 func AttachUserAuth(router *mux.Router, center auth.Center, log *zap.Logger) {
 	router.Use(func(h http.Handler) http.Handler {
@@ -21,7 +23,7 @@ func AttachUserAuth(router *mux.Router, center auth.Center, log *zap.Logger) {
 			}
 
 			h.ServeHTTP(w, r.WithContext(
-				sdk.SetBearerToken(r.Context(), token)))
+				context.WithValue(r.Context(), BearerTokenKey, token)))
 		})
 	})
 }
diff --git a/authmate/authmate.go b/authmate/authmate.go
index 7023c1d6..1872d39c 100644
--- a/authmate/authmate.go
+++ b/authmate/authmate.go
@@ -12,30 +12,34 @@ import (
 	"strconv"
 	"time"
 
-	sdk "github.com/nspcc-dev/cdn-sdk"
-	"github.com/nspcc-dev/neofs-s3-gw/creds/bearer"
-	"github.com/nspcc-dev/neofs-s3-gw/creds/hcs"
-	"github.com/nspcc-dev/neofs-s3-gw/creds/neofs"
 	"github.com/nspcc-dev/neofs-api-go/pkg/acl/eacl"
 	"github.com/nspcc-dev/neofs-api-go/pkg/container"
 	"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
 	"github.com/nspcc-dev/neofs-api-go/pkg/object"
 	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
 	"github.com/nspcc-dev/neofs-api-go/pkg/token"
+	sdk "github.com/nspcc-dev/neofs-http-gw/neofs"
 	"github.com/nspcc-dev/neofs-node/pkg/policy"
+	"github.com/nspcc-dev/neofs-s3-gw/creds/bearer"
+	"github.com/nspcc-dev/neofs-s3-gw/creds/hcs"
+	"github.com/nspcc-dev/neofs-s3-gw/creds/neofs"
 	"go.uber.org/zap"
 )
 
-const defaultAuthContainerBasicACL uint32 = 0b00111100100011001000110011001100
+const (
+	defaultAuthContainerBasicACL uint32 = 0b00111100100011001000110011001100
+	containerCreationTimeout            = 120 * time.Second
+	containerPollInterval               = 5 * time.Second
+)
 
 // Agent contains client communicating with NeoFS and logger.
 type Agent struct {
-	cli sdk.Client
+	cli sdk.ClientPlant
 	log *zap.Logger
 }
 
 // New creates an object of type Agent that consists of Client and logger.
-func New(log *zap.Logger, client sdk.Client) *Agent {
+func New(log *zap.Logger, client sdk.ClientPlant) *Agent {
 	return &Agent{log: log, cli: client}
 }
 
@@ -71,9 +75,14 @@ type (
 )
 
 func (a *Agent) checkContainer(ctx context.Context, cid *container.ID, friendlyName string) (*container.ID, error) {
+	conn, _, err := a.cli.ConnectionArtifacts()
+	if err != nil {
+		return nil, err
+	}
+
 	if cid != nil {
 		// check that container exists
-		_, err := a.cli.Container().Get(ctx, cid)
+		_, err = conn.GetContainer(ctx, cid)
 		return cid, err
 	}
 
@@ -88,9 +97,31 @@ func (a *Agent) checkContainer(ctx context.Context, cid *container.ID, friendlyN
 		container.WithAttribute(container.AttributeName, friendlyName),
 		container.WithAttribute(container.AttributeTimestamp, strconv.FormatInt(time.Now().Unix(), 10)))
 
-	return a.cli.Container().Put(ctx, cnr,
-		sdk.ContainerPutAndWait(),
-		sdk.ContainerPutWithTimeout(120*time.Second))
+	cid, err = conn.PutContainer(ctx, cnr)
+	if err != nil {
+		return nil, err
+	}
+
+	wctx, cancel := context.WithTimeout(ctx, containerCreationTimeout)
+	defer cancel()
+	ticker := time.NewTimer(containerPollInterval)
+	defer ticker.Stop()
+	wdone := wctx.Done()
+	done := ctx.Done()
+	for {
+		select {
+		case <-done:
+			return nil, ctx.Err()
+		case <-wdone:
+			return nil, wctx.Err()
+		case <-ticker.C:
+			_, err = conn.GetContainer(ctx, cid)
+			if err == nil {
+				return cid, nil
+			}
+			ticker.Reset(containerPollInterval)
+		}
+	}
 }
 
 // IssueSecret creates an auth token, puts it in the NeoFS network and writes to io.Writer a new secret access key.
@@ -122,7 +153,7 @@ func (a *Agent) IssueSecret(ctx context.Context, w io.Writer, options *IssueSecr
 		zap.Stringer("owner_tkn", tkn.Issuer()))
 
 	address, err := bearer.
-		New(a.cli.Object(), options.OwnerPrivateKey).
+		New(a.cli, options.OwnerPrivateKey).
 		Put(ctx, cid, tkn, options.GatesPublicKeys...)
 	if err != nil {
 		return fmt.Errorf("failed to put bearer token: %w", err)
@@ -147,7 +178,7 @@ func (a *Agent) IssueSecret(ctx context.Context, w io.Writer, options *IssueSecr
 // ObtainSecret receives an existing secret access key from NeoFS and
 // writes to io.Writer the secret access key.
 func (a *Agent) ObtainSecret(ctx context.Context, w io.Writer, options *ObtainSecretOptions) error {
-	bearerCreds := bearer.New(a.cli.Object(), options.GatePrivateKey)
+	bearerCreds := bearer.New(a.cli, options.GatePrivateKey)
 	address := object.NewAddress()
 	if err := address.Parse(options.SecretAddress); err != nil {
 		return fmt.Errorf("failed to parse secret address: %w", err)
diff --git a/cmd/authmate/main.go b/cmd/authmate/main.go
index 2e452990..6787289b 100644
--- a/cmd/authmate/main.go
+++ b/cmd/authmate/main.go
@@ -10,12 +10,12 @@ import (
 	"syscall"
 	"time"
 
-	sdk "github.com/nspcc-dev/cdn-sdk"
+	"github.com/nspcc-dev/neofs-api-go/pkg/container"
+	"github.com/nspcc-dev/neofs-http-gw/connections"
+	sdk "github.com/nspcc-dev/neofs-http-gw/neofs"
+	"github.com/nspcc-dev/neofs-s3-gw/authmate"
 	"github.com/nspcc-dev/neofs-s3-gw/creds/hcs"
 	"github.com/nspcc-dev/neofs-s3-gw/creds/neofs"
-	"github.com/nspcc-dev/cdn-sdk/pool"
-	"github.com/nspcc-dev/neofs-api-go/pkg/container"
-	"github.com/nspcc-dev/neofs-s3-gw/authmate"
 	"github.com/nspcc-dev/neofs-s3-gw/internal/version"
 	"github.com/urfave/cli/v2"
 	"go.uber.org/zap"
@@ -365,25 +365,23 @@ func fetchHCSCredentials(val string) (hcs.Credentials, error) {
 	return hcs.NewCredentials(val)
 }
 
-func createSDKClient(ctx context.Context, log *zap.Logger, neofsCreds neofs.Credentials, peerAddress string) (sdk.Client, error) {
+func createSDKClient(ctx context.Context, log *zap.Logger, neofsCreds neofs.Credentials, peerAddress string) (sdk.ClientPlant, error) {
 	log.Debug("prepare connection pool")
 
-	p, err := pool.New(ctx,
-		pool.WithLogger(log),
-		pool.WithAddress(peerAddress),
-		pool.WithCredentials(neofsCreds),
-		pool.WithAPIPreparer(sdk.APIPreparer),
-		pool.WithConnectTimeout(poolConnectTimeout),
-		pool.WithRequestTimeout(poolRequestTimeout))
+	pb := new(connections.PoolBuilder)
+	pb.AddNode(peerAddress, 1)
+
+	opts := &connections.PoolBuilderOptions{
+		Key:                   neofsCreds.PrivateKey(),
+		NodeConnectionTimeout: poolConnectTimeout,
+		NodeRequestTimeout:    poolRequestTimeout,
+	}
+	pool, err := pb.Build(ctx, opts)
 	if err != nil {
 		return nil, fmt.Errorf("failed to create connection pool: %w", err)
 	}
 
 	log.Debug("prepare sdk client")
 
-	return sdk.New(ctx,
-		sdk.WithLogger(log),
-		sdk.WithCredentials(neofsCreds),
-		sdk.WithConnectionPool(p),
-		sdk.WithAPIPreparer(sdk.APIPreparer))
+	return sdk.NewClientPlant(ctx, pool, neofsCreds)
 }
diff --git a/cmd/s3-gw/app-healthy.go b/cmd/s3-gw/app-healthy.go
index ca487a93..61294ed9 100644
--- a/cmd/s3-gw/app-healthy.go
+++ b/cmd/s3-gw/app-healthy.go
@@ -18,6 +18,7 @@ const (
 	defaultContentType = "text/plain; charset=utf-8"
 )
 
+//nolint:deadcode,unused // TODO
 func attachHealthy(r *mux.Router, h Healthy) {
 	healthy := r.PathPrefix(systemPath + "/-").
 		Subrouter().
diff --git a/cmd/s3-gw/app-settings.go b/cmd/s3-gw/app-settings.go
index 0ab9638f..dac553b2 100644
--- a/cmd/s3-gw/app-settings.go
+++ b/cmd/s3-gw/app-settings.go
@@ -9,6 +9,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/nspcc-dev/neofs-http-gw/connections"
 	"github.com/nspcc-dev/neofs-s3-gw/internal/version"
 	"github.com/spf13/pflag"
 	"github.com/spf13/viper"
@@ -110,8 +111,8 @@ var ignore = map[string]struct{}{
 
 func (empty) Read([]byte) (int, error) { return 0, io.EOF }
 
-func fetchPeers(l *zap.Logger, v *viper.Viper) map[string]float64 {
-	peers := make(map[string]float64)
+func fetchPeers(l *zap.Logger, v *viper.Viper) *connections.PoolBuilder {
+	pb := new(connections.PoolBuilder)
 
 	for i := 0; ; i++ {
 		key := cfgPeers + "." + strconv.Itoa(i) + "."
@@ -122,14 +123,17 @@ func fetchPeers(l *zap.Logger, v *viper.Viper) map[string]float64 {
 			l.Warn("skip, empty address")
 			break
 		}
+		if weight <= 0 { // unspecified or wrong
+			weight = 1
+		}
+		pb.AddNode(address, weight)
 
-		peers[address] = weight
-		l.Info("add connection peer",
+		l.Info("added connection peer",
 			zap.String("address", address),
 			zap.Float64("weight", weight))
 	}
 
-	return peers
+	return pb
 }
 
 func fetchDomains(v *viper.Viper) []string {
diff --git a/cmd/s3-gw/app.go b/cmd/s3-gw/app.go
index ada6a01b..6736fc73 100644
--- a/cmd/s3-gw/app.go
+++ b/cmd/s3-gw/app.go
@@ -2,29 +2,26 @@ package main
 
 import (
 	"context"
-	"errors"
+	"math"
 	"net"
 	"net/http"
-	"os"
 
-	sdk "github.com/nspcc-dev/cdn-sdk"
-	"github.com/nspcc-dev/neofs-s3-gw/creds/hcs"
-	"github.com/nspcc-dev/neofs-s3-gw/creds/neofs"
-	"github.com/nspcc-dev/cdn-sdk/pool"
+	"github.com/nspcc-dev/neofs-http-gw/connections"
+	sdk "github.com/nspcc-dev/neofs-http-gw/neofs"
 	"github.com/nspcc-dev/neofs-s3-gw/api"
 	"github.com/nspcc-dev/neofs-s3-gw/api/auth"
 	"github.com/nspcc-dev/neofs-s3-gw/api/handler"
 	"github.com/nspcc-dev/neofs-s3-gw/api/layer"
+	"github.com/nspcc-dev/neofs-s3-gw/creds/hcs"
+	"github.com/nspcc-dev/neofs-s3-gw/creds/neofs"
 	"github.com/spf13/viper"
 	"go.uber.org/zap"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/keepalive"
 )
 
 type (
 	// App is the main application structure.
 	App struct {
-		cli pool.Client
+		cli sdk.ClientPlant
 		ctr auth.Center
 		log *zap.Logger
 		cfg *viper.Viper
@@ -46,10 +43,10 @@ type (
 
 func newApp(ctx context.Context, l *zap.Logger, v *viper.Viper) *App {
 	var (
+		pool   connections.Pool
 		err    error
 		tls    *tlsConfig
-		cli    sdk.Client
-		con    pool.Client
+		cli    sdk.ClientPlant
 		caller api.Handler
 		ctr    auth.Center
 		obj    layer.Client
@@ -57,7 +54,7 @@ func newApp(ctx context.Context, l *zap.Logger, v *viper.Viper) *App {
 		hcsCred hcs.Credentials
 		nfsCred neofs.Credentials
 
-		peers = fetchPeers(l, v)
+		poolPeers = fetchPeers(l, v)
 
 		reBalance  = defaultRebalanceTimer
 		conTimeout = defaultConnectTimeout
@@ -109,56 +106,30 @@ func newApp(ctx context.Context, l *zap.Logger, v *viper.Viper) *App {
 		zap.String("HCS", hcsCredential),
 		zap.String("NeoFS", nfsCredential))
 
-	poolOptions := []pool.Option{
-		pool.WithLogger(l),
-		pool.WithWeightPool(peers),
-		pool.WithCredentials(nfsCred),
-		pool.WithTickerTimeout(reBalance),
-		pool.WithConnectTimeout(conTimeout),
-		pool.WithRequestTimeout(reqTimeout),
-		pool.WithAPIPreparer(sdk.APIPreparer),
-		pool.WithGRPCOptions(
-			grpc.WithBlock(),
-			grpc.WithInsecure(),
-			grpc.WithKeepaliveParams(keepalive.ClientParameters{
-				Time:                v.GetDuration(cfgKeepaliveTime),
-				Timeout:             v.GetDuration(cfgKeepaliveTimeout),
-				PermitWithoutStream: v.GetBool(cfgKeepalivePermitWithoutStream),
-			}))}
-
-	if con, err = pool.New(ctx, poolOptions...); err != nil {
-		l.Fatal("could not prepare pool connections", zap.Error(err))
+	opts := &connections.PoolBuilderOptions{
+		Key:                     nfsCred.PrivateKey(),
+		NodeConnectionTimeout:   conTimeout,
+		NodeRequestTimeout:      reqTimeout,
+		ClientRebalanceInterval: reBalance,
+		SessionExpirationEpoch:  math.MaxUint64,
+		KeepaliveTime:           v.GetDuration(cfgKeepaliveTime),
+		KeepaliveTimeout:        v.GetDuration(cfgKeepaliveTimeout),
+		KeepalivePermitWoStream: v.GetBool(cfgKeepalivePermitWithoutStream),
 	}
-
-	{ // should establish connection with NeoFS Storage Nodes
-		ctx, cancel := context.WithTimeout(ctx, conTimeout)
-		defer cancel()
-
-		if _, err = con.Connection(ctx); err != nil {
-			if errors.Is(err, context.Canceled) {
-				l.Info("connection canceled")
-				os.Exit(0)
-			}
-
-			l.Fatal("could not establish connection",
-				zap.Error(err))
-		}
+	pool, err = poolPeers.Build(ctx, opts)
+	if err != nil {
+		l.Fatal("failed to create connection pool", zap.Error(err))
 	}
-
-	if cli, err = sdk.New(ctx,
-		sdk.WithLogger(l),
-		sdk.WithConnectionPool(con),
-		sdk.WithCredentials(nfsCred),
-		sdk.WithAPIPreparer(sdk.APIPreparer)); err != nil {
-		l.Fatal("could not prepare sdk client",
-			zap.Error(err))
+	cli, err = sdk.NewClientPlant(ctx, pool, nfsCred)
+	if err != nil {
+		l.Fatal("failed to create neofs client plant")
 	}
 
 	// prepare object layer
 	obj = layer.NewLayer(l, cli)
 
 	// prepare auth center
-	ctr = auth.New(cli.Object(), hcsCred.PrivateKey())
+	ctr = auth.New(cli, hcsCred.PrivateKey())
 
 	if caller, err = handler.New(l, obj); err != nil {
 		l.Fatal("could not initialize API handler", zap.Error(err))
@@ -166,7 +137,7 @@ func newApp(ctx context.Context, l *zap.Logger, v *viper.Viper) *App {
 
 	return &App{
 		ctr: ctr,
-		cli: con,
+		cli: cli,
 		log: l,
 		cfg: v,
 		obj: obj,
@@ -184,12 +155,7 @@ func newApp(ctx context.Context, l *zap.Logger, v *viper.Viper) *App {
 func (a *App) Wait() {
 	a.log.Info("application started")
 
-	select {
-	case <-a.wrkDone: // wait for worker is stopped
-		<-a.webDone
-	case <-a.webDone: // wait for web-server is stopped
-		<-a.wrkDone
-	}
+	<-a.webDone // wait for web-server to be stopped
 
 	a.log.Info("application finished")
 }
@@ -212,7 +178,7 @@ func (a *App) Server(ctx context.Context) {
 	router := newS3Router()
 
 	// Attach app-specific routes:
-	attachHealthy(router, a.cli)
+	//	attachHealthy(router, a.cli)
 	attachMetrics(router, a.cfg, a.log)
 	attachProfiler(router, a.cfg, a.log)
 
@@ -258,10 +224,3 @@ func (a *App) Server(ctx context.Context) {
 
 	close(a.webDone)
 }
-
-// Worker runs client worker.
-func (a *App) Worker(ctx context.Context) {
-	a.cli.Worker(ctx)
-	a.log.Info("stopping worker")
-	close(a.wrkDone)
-}
diff --git a/cmd/s3-gw/main.go b/cmd/s3-gw/main.go
index 35f6ff32..088e5635 100644
--- a/cmd/s3-gw/main.go
+++ b/cmd/s3-gw/main.go
@@ -5,7 +5,7 @@ import (
 	"os/signal"
 	"syscall"
 
-	"github.com/nspcc-dev/cdn-sdk/logger"
+	"github.com/nspcc-dev/neofs-http-gw/logger"
 	"github.com/spf13/viper"
 	"go.uber.org/zap"
 )
@@ -49,7 +49,6 @@ func main() {
 	)
 
 	go a.Server(g)
-	go a.Worker(g)
 
 	a.Wait()
 }
diff --git a/creds/accessbox/bearer_token_test.go b/creds/accessbox/bearer_token_test.go
index 7382af7b..bcaba33f 100644
--- a/creds/accessbox/bearer_token_test.go
+++ b/creds/accessbox/bearer_token_test.go
@@ -9,9 +9,9 @@ import (
 	"strconv"
 	"testing"
 
-	"github.com/nspcc-dev/neofs-s3-gw/creds/hcs"
 	"github.com/nspcc-dev/neofs-api-go/pkg/acl/eacl"
 	"github.com/nspcc-dev/neofs-api-go/pkg/token"
+	"github.com/nspcc-dev/neofs-s3-gw/creds/hcs"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/creds/bearer/credentials.go b/creds/bearer/credentials.go
index 458ae23e..b401014a 100644
--- a/creds/bearer/credentials.go
+++ b/creds/bearer/credentials.go
@@ -8,12 +8,13 @@ import (
 	"sync"
 	"time"
 
-	sdk "github.com/nspcc-dev/cdn-sdk"
+	"github.com/nspcc-dev/neofs-api-go/pkg/client"
 	"github.com/nspcc-dev/neofs-api-go/pkg/container"
 	"github.com/nspcc-dev/neofs-api-go/pkg/object"
 	"github.com/nspcc-dev/neofs-api-go/pkg/token"
-	"github.com/nspcc-dev/neofs-s3-gw/creds/hcs"
+	sdk "github.com/nspcc-dev/neofs-http-gw/neofs"
 	"github.com/nspcc-dev/neofs-s3-gw/creds/accessbox"
+	"github.com/nspcc-dev/neofs-s3-gw/creds/hcs"
 )
 
 type (
@@ -24,7 +25,7 @@ type (
 
 	cred struct {
 		key hcs.PrivateKey
-		obj sdk.ObjectClient
+		obj sdk.ClientPlant
 	}
 )
 
@@ -41,7 +42,7 @@ var bufferPool = sync.Pool{
 
 var _ = New
 
-func New(cli sdk.ObjectClient, key hcs.PrivateKey) Credentials {
+func New(cli sdk.ClientPlant, key hcs.PrivateKey) Credentials {
 	return &cred{obj: cli, key: key}
 }
 
@@ -60,9 +61,23 @@ func (c *cred) Get(ctx context.Context, address *object.Address) (*token.BearerT
 
 	box := accessbox.NewBearerBox(nil)
 
-	if _, err := c.obj.Get(ctx, address, sdk.WithGetWriter(buf)); err != nil {
+	conn, tok, err := c.obj.ConnectionArtifacts()
+	if err != nil {
 		return nil, err
-	} else if err = accessbox.NewDecoder(buf, c.key).Decode(box); err != nil {
+	}
+	ops := new(client.GetObjectParams).WithAddress(address).WithPayloadWriter(buf)
+
+	_, err = conn.GetObject(
+		ctx,
+		ops,
+		client.WithSession(tok),
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	err = accessbox.NewDecoder(buf, c.key).Decode(box)
+	if err != nil {
 		return nil, err
 	}
 
@@ -88,6 +103,10 @@ func (c *cred) Put(ctx context.Context, cid *container.ID, tkn *token.BearerToke
 		return nil, err
 	}
 
+	conn, tok, err := c.obj.ConnectionArtifacts()
+	if err != nil {
+		return nil, err
+	}
 	timestamp := object.NewAttribute()
 	timestamp.SetKey(object.AttributeTimestamp)
 	timestamp.SetValue(created)
@@ -101,5 +120,17 @@ func (c *cred) Put(ctx context.Context, cid *container.ID, tkn *token.BearerToke
 	raw.SetOwnerID(tkn.Issuer())
 	raw.SetAttributes(filename, timestamp)
 
-	return c.obj.Put(ctx, raw.Object(), sdk.WithPutReader(buf))
+	ops := new(client.PutObjectParams).WithObject(raw.Object()).WithPayloadReader(buf)
+	oid, err := conn.PutObject(
+		ctx,
+		ops,
+		client.WithSession(tok),
+	)
+	if err != nil {
+		return nil, err
+	}
+	address := object.NewAddress()
+	address.SetObjectID(oid)
+	address.SetContainerID(cid)
+	return address, nil
 }
diff --git a/go.mod b/go.mod
index 8002da2a..0b40bd8d 100644
--- a/go.mod
+++ b/go.mod
@@ -6,9 +6,9 @@ require (
 	github.com/aws/aws-sdk-go v1.37.9
 	github.com/google/uuid v1.2.0
 	github.com/gorilla/mux v1.8.0
-	github.com/nspcc-dev/cdn-sdk v0.3.4
-	github.com/nspcc-dev/neofs-api-go v1.23.0
+	github.com/nspcc-dev/neofs-api-go v1.26.1
 	github.com/nspcc-dev/neofs-crypto v0.3.0
+	github.com/nspcc-dev/neofs-http-gw v0.15.1
 	github.com/nspcc-dev/neofs-node v1.22.0
 	github.com/prometheus/client_golang v1.9.0
 	github.com/spf13/pflag v1.0.5
@@ -16,6 +16,6 @@ require (
 	github.com/stretchr/testify v1.7.0
 	github.com/urfave/cli/v2 v2.3.0
 	go.uber.org/zap v1.16.0
-	golang.org/x/crypto v0.0.0-20201002170205-7f63de1d35b0
-	google.golang.org/grpc v1.35.0
+	golang.org/x/crypto v0.0.0-20210322153248-0c34fe9e7dc2
+	google.golang.org/grpc v1.36.1
 )
diff --git a/go.sum b/go.sum
index d05cdf9a..3ba68e3c 100644
--- a/go.sum
+++ b/go.sum
@@ -40,6 +40,8 @@ github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRF
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/alicebob/gopher-json v0.0.0-20180125190556-5a6b3ba71ee6/go.mod h1:SGnFV6hVsYE877CKEZ6tDNTjaSXYUk6QqoIK6PrAtcc=
 github.com/alicebob/miniredis v2.5.0+incompatible/go.mod h1:8HZjEj4yU0dwhYHky+DxYx+6BMjkBbe5ONFIF1MXffk=
+github.com/andybalholm/brotli v1.0.0/go.mod h1:loMXtMfwqflxFJPmdbJO0a3KNoPuLBgiu3qAvBg8x/Y=
+github.com/andybalholm/brotli v1.0.1/go.mod h1:loMXtMfwqflxFJPmdbJO0a3KNoPuLBgiu3qAvBg8x/Y=
 github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
 github.com/apache/thrift v0.13.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
 github.com/armon/circbuf v0.0.0-20150827004946-bbbad097214e/go.mod h1:3U/XgcO3hCbHZ8TKRvWD2dDTCfh9M9ya+I9JpbB7O8o=
@@ -122,6 +124,7 @@ github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1m
 github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/etcd-io/bbolt v1.3.3/go.mod h1:ZF2nL25h33cCyBtcyWeZ2/I3HQOfTP+0PIEvHjkjCrw=
+github.com/fasthttp/router v1.3.5/go.mod h1:BylQKgvh6YQkR0mvL60+HJyTaGwcn5d8UFNweOb/Nw8=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:rZfgFAXFS/z/lEd6LJmf9HVZ1LkgYiHx5pHhV5DR16M=
 github.com/franela/goblin v0.0.0-20200105215937-c9ffbefa60db/go.mod h1:7dvUGVsVBjqR7JHJk0brhHOZYGmfBYOrK0ZhYMEtBr4=
@@ -256,7 +259,9 @@ github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8
 github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/kkdai/bstream v0.0.0-20161212061736-f391b8402d23/go.mod h1:J+Gs4SYgM6CZQHDETBtE9HaSEkGmuNXF86RwHhHUvq4=
+github.com/klauspost/compress v1.10.7/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
 github.com/klauspost/compress v1.11.3/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
+github.com/klauspost/compress v1.11.8/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
 github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
@@ -317,27 +322,30 @@ github.com/nats-io/nats.go v1.9.1/go.mod h1:ZjDU1L/7fJ09jvUSRVBR2e7+RnLiiIQyqyzE
 github.com/nats-io/nkeys v0.1.0/go.mod h1:xpnFELMwJABBLVhffcfd1MZx6VsNRFpEugbxziKVo7w=
 github.com/nats-io/nkeys v0.1.3/go.mod h1:xpnFELMwJABBLVhffcfd1MZx6VsNRFpEugbxziKVo7w=
 github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c=
-github.com/nspcc-dev/cdn-sdk v0.3.4 h1:RtYWuF9xDWrkVwu6sFRWlyZ+ToYM7Y9h8B93Fg4CPEA=
-github.com/nspcc-dev/cdn-sdk v0.3.4/go.mod h1:JC4dT16H5HilyZcb8sTxL/TMC1FSEKMuFAqRsmAPoAk=
 github.com/nspcc-dev/dbft v0.0.0-20191205084618-dacb1a30c254/go.mod h1:w1Ln2aT+dBlPhLnuZhBV+DfPEdS2CHWWLp5JTScY3bw=
 github.com/nspcc-dev/dbft v0.0.0-20191209120240-0d6b7568d9ae/go.mod h1:3FjXOoHmA51EGfb5GS/HOv7VdmngNRTssSeQ729dvGY=
 github.com/nspcc-dev/dbft v0.0.0-20200117124306-478e5cfbf03a/go.mod h1:/YFK+XOxxg0Bfm6P92lY5eDSLYfp06XOdL8KAVgXjVk=
 github.com/nspcc-dev/dbft v0.0.0-20200219114139-199d286ed6c1/go.mod h1:O0qtn62prQSqizzoagHmuuKoz8QMkU3SzBoKdEvm3aQ=
 github.com/nspcc-dev/dbft v0.0.0-20200711144034-c526ccc6f570/go.mod h1:1FYQXSbb6/9HQIkoF8XO7W/S8N7AZRkBsgwbcXRvk0E=
 github.com/nspcc-dev/dbft v0.0.0-20201221101812-e13a1a1c3cb2/go.mod h1:I5D0W3tu3epdt2RMCTxS//HDr4S+OHRqajouQTOAHI8=
+github.com/nspcc-dev/dbft v0.0.0-20210302103605-cc75991b7cfb/go.mod h1:U8MSnEShH+o5hexfWJdze6uMFJteP0ko7J2frO7Yu1Y=
 github.com/nspcc-dev/hrw v1.0.9 h1:17VcAuTtrstmFppBjfRiia4K2wA/ukXZhLFS8Y8rz5Y=
 github.com/nspcc-dev/hrw v1.0.9/go.mod h1:l/W2vx83vMQo6aStyx2AuZrJ+07lGv2JQGlVkPG06MU=
 github.com/nspcc-dev/neo-go v0.73.1-pre.0.20200303142215-f5a1b928ce09/go.mod h1:pPYwPZ2ks+uMnlRLUyXOpLieaDQSEaf4NM3zHVbRjmg=
 github.com/nspcc-dev/neo-go v0.91.0/go.mod h1:G6HdOWvzQ6tlvFdvFSN/PgCzLPN/X/X4d5hTjFRUDcc=
-github.com/nspcc-dev/neo-go v0.92.0 h1:iKHpKLzpwE6RSXnQb0BoYWi+H1P/hNyQbMpPG0mY57Q=
 github.com/nspcc-dev/neo-go v0.92.0/go.mod h1:L7PyTzjK1j/PCAxvbKiVFkCMZDvsv82JbXlPxaH1t0Q=
+github.com/nspcc-dev/neo-go v0.95.0 h1:bttArYkIuhBJWSZsZ1xVW8MJsj5SvZwAhqVN3HZPNbo=
+github.com/nspcc-dev/neo-go v0.95.0/go.mod h1:bW07ge1WFXsBgqrcPpLUr6OcyQxHqM26MZNesWMdH0c=
 github.com/nspcc-dev/neofs-api-go v1.22.0/go.mod h1:G7dqincfdjBrAbL5nxVp82emF05fSVEqe59ICsoRDI8=
-github.com/nspcc-dev/neofs-api-go v1.23.0 h1:t4FB5uVY99UkYR0Hiyi1SHjZuqzf4qicw7tf7BBnkHk=
-github.com/nspcc-dev/neofs-api-go v1.23.0/go.mod h1:G7dqincfdjBrAbL5nxVp82emF05fSVEqe59ICsoRDI8=
+github.com/nspcc-dev/neofs-api-go v1.24.0/go.mod h1:G7dqincfdjBrAbL5nxVp82emF05fSVEqe59ICsoRDI8=
+github.com/nspcc-dev/neofs-api-go v1.26.1 h1:GMIuEB6Hv9IXP9SJd/1f8Df6gRriPkSplpmpJXgQ/1I=
+github.com/nspcc-dev/neofs-api-go v1.26.1/go.mod h1:SHuH1Ba3U/h3j+8HHbb3Cns1LfMlEb88guWog9Qi68Y=
 github.com/nspcc-dev/neofs-crypto v0.2.0/go.mod h1:F/96fUzPM3wR+UGsPi3faVNmFlA9KAEAUQR7dMxZmNA=
 github.com/nspcc-dev/neofs-crypto v0.2.3/go.mod h1:8w16GEJbH6791ktVqHN9YRNH3s9BEEKYxGhlFnp0cDw=
 github.com/nspcc-dev/neofs-crypto v0.3.0 h1:zlr3pgoxuzrmGCxc5W8dGVfA9Rro8diFvVnBg0L4ifM=
 github.com/nspcc-dev/neofs-crypto v0.3.0/go.mod h1:8w16GEJbH6791ktVqHN9YRNH3s9BEEKYxGhlFnp0cDw=
+github.com/nspcc-dev/neofs-http-gw v0.15.1 h1:0T0g3LeFw5XsxKeWSASNtPOpz0eblhdXmx8coIES5gw=
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@@ -427,6 +435,7 @@ github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0
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@@ -484,6 +493,11 @@ github.com/urfave/cli v1.22.1 h1:+mkCCcOFKPnCmVYVcURKps1Xe+3zP90gSYGNfRkjoIY=
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@@ -528,8 +542,9 @@ golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4/go.mod h1:yigFU9vqHzYiE8U
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@@ -571,10 +586,12 @@ golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLL
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@@ -609,24 +626,30 @@ golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -697,8 +720,8 @@ google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQ
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-google.golang.org/grpc v1.35.0 h1:TwIQcH3es+MojMVojxxfQ3l3OF2KzlRxML2xZq0kRo8=
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