Merge pull request #31 from nspcc-dev/migrate-to-v2-api

Migrate to NeoFS API v2

README.md

@@ -1,11 +1,59 @@
 # NeoFS S3 Gate
 
-... 
+## Example of configuration
+
+```
+# Flags
+      --pprof                           enable pprof
+      --metrics                         enable prometheus metrics
+  -h, --help                            show help
+  -v, --version                         show version
+      --neofs-key string                set value to hex string, WIF string, or path to NeoFS private key file (use "generated" to generate key) (default "generated")
+      --auth-key string                 set path to file with auth (curve25519) private key to use in auth scheme
+      --verbose                         set debug mode of gRPC connections
+      --request_timeout duration        set gRPC request timeout (default 15s)
+      --connect_timeout duration        set gRPC connect timeout (default 30s)
+      --rebalance_timer duration        set gRPC connection rebalance timer (default 15s)
+      --max_clients_count int           set max-clients count (default 100)
+      --max_clients_deadline duration   set max-clients deadline (default 30s)
+  -t, --con_ttl duration                set gRPC connection time to live (default 5m0s)
+      --listen_address string           set address to listen (default "0.0.0.0:8080")
+  -p, --peers stringArray               set NeoFS nodes
+
+# Environments
+
+S3_AUTH-KEY = 
+S3_CON_TTL = 5m0s
+S3_CONNECT_TIMEOUT = 30s
+S3_KEEPALIVE_PERMIT_WITHOUT_STREAM = true
+S3_KEEPALIVE_TIME = 10s
+S3_KEEPALIVE_TIMEOUT = 10s
+S3_LISTEN_ADDRESS = 0.0.0.0:8080
+S3_LOGGER_FORMAT = console
+S3_LOGGER_LEVEL = debug
+S3_LOGGER_NO_DISCLAIMER = true
+S3_LOGGER_SAMPLING_INITIAL = 1000
+S3_LOGGER_SAMPLING_THEREAFTER = 1000
+S3_LOGGER_TRACE_LEVEL = panic
+S3_MAX_CLIENTS_COUNT = 100
+S3_MAX_CLIENTS_DEADLINE = 30s
+S3_METRICS = false
+S3_NEOFS-KEY = generated
+S3_PPROF = false
+S3_REBALANCE_TIMER = 15s
+S3_REQUEST_TIMEOUT = 15s
+S3_VERBOSE = false
+
+# Peers preset
+
+S3_PEERS_[N]_ADDRESS = string
+S3_PEERS_[N]_WEIGHT = 0..1 (float)
+``` 
 
 ---
 <footer>
 
-# MinIO Fork
+#### MinIO Fork
 
 Forked from https://github.com/minio/minio (https://github.com/minio/minio/releases/tag/RELEASE.2020-07-02T00-15-09Z)
 

api/handler/copy.go

@@ -49,6 +49,7 @@ func (h *handler) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
 				Description:    "",
 				HTTPStatusCode: http.StatusBadRequest,
 			}, r.URL)
+
 			return
 		}
 
@@ -78,6 +79,8 @@ func (h *handler) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
 			Description:    err.Error(),
 			HTTPStatusCode: http.StatusInternalServerError,
 		}, r.URL)
+
+		return
 	} else if err = api.EncodeToResponse(w, &CopyObjectResponse{LastModified: inf.Created.Format(time.RFC3339)}); err != nil {
 		h.log.Error("something went wrong",
 			zap.String("request_id", rid),
@@ -92,5 +95,12 @@ func (h *handler) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
 			Description:    err.Error(),
 			HTTPStatusCode: http.StatusInternalServerError,
 		}, r.URL)
+
+		return
 	}
+
+	h.log.Info("object is copied",
+		zap.String("bucket", inf.Bucket),
+		zap.String("object", inf.Name),
+		zap.Stringer("object_id", inf.ID()))
 }

api/handler/delete.go

@@ -153,5 +153,7 @@ func (h *handler) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *http.Re
 			Description:    err.Error(),
 			HTTPStatusCode: http.StatusInternalServerError,
 		}, r.URL)
+
+		return
 	}
 }

api/handler/get.go

@@ -21,12 +21,6 @@ func (h *handler) GetObjectHandler(w http.ResponseWriter, r *http.Request) {
 		rid = api.GetRequestID(r.Context())
 	)
 
-	params := &layer.GetObjectParams{
-		Bucket: bkt,
-		Object: obj,
-		Writer: w,
-	}
-
 	if inf, err = h.obj.GetObjectInfo(r.Context(), bkt, obj); err != nil {
 		h.log.Error("could not find object",
 			zap.String("request_id", rid),
@@ -43,7 +37,13 @@ func (h *handler) GetObjectHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	params.Length = inf.Size
+	params := &layer.GetObjectParams{
+		Bucket: inf.Bucket,
+		Object: inf.Name,
+		Writer: w,
+	}
+
+	// params.Length = inf.Size
 
 	if err = h.obj.GetObject(r.Context(), params); err != nil {
 		h.log.Error("could not get object",
@@ -62,8 +62,8 @@ func (h *handler) GetObjectHandler(w http.ResponseWriter, r *http.Request) {
 	}
 
 	w.Header().Set("Content-Type", inf.ContentType)
+	w.Header().Set("Last-Modified", inf.Created.Format(http.TimeFormat))
 	w.Header().Set("Content-Length", strconv.FormatInt(inf.Size, 10))
 
-	w.Header().Set("Last-Modified", inf.Created.Format(http.TimeFormat))
+	w.WriteHeader(http.StatusOK)
-
 }

api/handler/head.go

@@ -39,13 +39,11 @@ func (h *handler) HeadObjectHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	w.WriteHeader(http.StatusOK)
-
 	w.Header().Set("Content-Type", inf.ContentType)
 	w.Header().Set("Content-Length", strconv.FormatInt(inf.Size, 10))
-
 	w.Header().Set("Last-Modified", inf.Created.Format(http.TimeFormat))
 
+	w.WriteHeader(http.StatusOK)
 }
 
 func (h *handler) HeadBucketHandler(w http.ResponseWriter, r *http.Request) {

api/handler/info.go

@@ -36,5 +36,7 @@ func (h *handler) GetBucketLocationHandler(w http.ResponseWriter, r *http.Reques
 			Description:    err.Error(),
 			HTTPStatusCode: http.StatusInternalServerError,
 		}, r.URL)
+
+		return
 	}
 }

api/handler/list.go

@@ -5,6 +5,8 @@ import (
 	"strconv"
 	"time"
 
+	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
+	"github.com/nspcc-dev/neofs-api-go/pkg/token"
 	"github.com/nspcc-dev/neofs-s3-gate/api"
 	"github.com/nspcc-dev/neofs-s3-gate/api/layer"
 	"github.com/nspcc-dev/neofs-s3-gate/auth"
@@ -25,12 +27,14 @@ var maxObjectList = 10000 // Limit number of objects in a listObjectsResponse/li
 
 func (h *handler) ListBucketsHandler(w http.ResponseWriter, r *http.Request) {
 	var (
+		err error
+		own = owner.NewID()
+		tkn *token.BearerToken
 		res *ListBucketsResponse
 		rid = api.GetRequestID(r.Context())
 	)
 
-	tkn, err := auth.GetBearerToken(r.Context())
+	if tkn, err = auth.GetBearerToken(r.Context()); err != nil {
-	if err != nil {
 		h.log.Error("something went wrong",
 			zap.String("request_id", rid),
 			zap.Error(err))
@@ -41,6 +45,18 @@ func (h *handler) ListBucketsHandler(w http.ResponseWriter, r *http.Request) {
 			HTTPStatusCode: http.StatusInternalServerError,
 		}, r.URL)
 
+		return
+	} else if own, err = layer.GetOwnerID(tkn); err != nil {
+		h.log.Error("something went wrong",
+			zap.String("request_id", rid),
+			zap.Error(err))
+
+		api.WriteErrorResponse(r.Context(), w, api.Error{
+			Code:           api.GetAPIError(api.ErrBadRequest).Code,
+			Description:    err.Error(),
+			HTTPStatusCode: http.StatusBadRequest,
+		}, r.URL)
+
 		return
 	}
 
@@ -59,10 +75,14 @@ func (h *handler) ListBucketsHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	if len(list) > 0 {
+		own = list[0].Owner
+	}
+
 	res = &ListBucketsResponse{
 		Owner: Owner{
-			ID:          tkn.OwnerID.String(),
+			ID:          own.String(),
-			DisplayName: tkn.OwnerID.String(),
+			DisplayName: own.String(),
 		},
 	}
 

api/layer/container.go

@@ -2,11 +2,12 @@ package layer
 
 import (
 	"context"
+	"strconv"
 	"time"
 
-	"github.com/nspcc-dev/neofs-api-go/container"
+	"github.com/nspcc-dev/neofs-api-go/pkg/client"
-	"github.com/nspcc-dev/neofs-api-go/refs"
+	"github.com/nspcc-dev/neofs-api-go/pkg/container"
-	"github.com/nspcc-dev/neofs-api-go/service"
+	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
 	"github.com/nspcc-dev/neofs-s3-gate/api"
 	"github.com/nspcc-dev/neofs-s3-gate/auth"
 	"go.uber.org/zap"
@@ -15,7 +16,8 @@ import (
 type (
 	BucketInfo struct {
 		Name    string
-		CID     refs.CID
+		CID     *container.ID
+		Owner   *owner.ID
 		Created time.Time
 	}
 
@@ -28,60 +30,73 @@ type (
 	}
 )
 
-func (n *layer) containerInfo(ctx context.Context, cid refs.CID) (*BucketInfo, error) {
+func (n *layer) containerInfo(ctx context.Context, cid *container.ID) (*BucketInfo, error) {
-	rid := api.GetRequestID(ctx)
+	var (
+		rid = api.GetRequestID(ctx)
+
+		info = &BucketInfo{
+			CID:  cid,
+			Name: cid.String(),
+		}
+	)
+
 	bearer, err := auth.GetBearerToken(ctx)
 	if err != nil {
 		n.log.Error("could not receive bearer token",
+			zap.Stringer("cid", cid),
 			zap.String("request_id", rid),
 			zap.Error(err))
 		return nil, err
 	}
 
-	req := new(container.GetRequest)
-	req.SetCID(cid)
-	req.SetTTL(service.SingleForwardingTTL)
-	// req.SetBearer(bearer)
-
 	_ = bearer
 
-	if err = service.SignRequestData(n.key, req); err != nil {
+	cli, tkn, err := n.prepareClient(ctx)
-		n.log.Error("could not prepare request",
-			zap.String("request_id", rid),
-			zap.Error(err))
-		return nil, err
-	}
-
-	conn, err := n.cli.GetConnection(ctx)
 	if err != nil {
 		n.log.Error("could not prepare client",
+			zap.Stringer("cid", cid),
 			zap.String("request_id", rid),
 			zap.Error(err))
+
 		return nil, err
 	}
 
-	// todo: think about timeout
+	res, err := cli.GetContainer(ctx, cid, client.WithSession(tkn))
-	ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
-	defer cancel()
-
-	res, err := container.NewServiceClient(conn).Get(ctx, req)
 	if err != nil {
-		n.log.Error("could not list buckets",
+		n.log.Error("could not fetch container",
+			zap.Stringer("cid", cid),
 			zap.String("request_id", rid),
 			zap.Error(err))
+
 		return nil, err
 	}
 
-	_ = res
+	info.Owner = owner.NewIDFromV2(res.GetOwnerID())
 
-	return &BucketInfo{
+	for _, attr := range res.GetAttributes() {
-		CID:     cid,
+		switch key, val := attr.GetKey(), attr.GetValue(); key {
-		Name:    cid.String(), // should be fetched from container.GetResponse
+		case container.AttributeName:
-		Created: time.Time{},  // should be fetched from container.GetResponse
+			info.Name = val
-	}, nil
+		case container.AttributeTimestamp:
+			unix, err := strconv.ParseInt(attr.GetValue(), 10, 64)
+			if err != nil {
+				n.log.Error("could not parse container creation time",
+					zap.Stringer("cid", cid),
+					zap.String("request_id", rid),
+					zap.String("created_at", val),
+					zap.Error(err))
+
+				continue
+			}
+
+			info.Created = time.Unix(unix, 0)
+		}
+	}
+
+	return info, nil
 }
 
-func (n *layer) containerList(ctx context.Context) ([]BucketInfo, error) {
+func (n *layer) containerList(ctx context.Context) ([]*BucketInfo, error) {
 	rid := api.GetRequestID(ctx)
 	bearer, err := auth.GetBearerToken(ctx)
 	if err != nil {
@@ -91,21 +106,9 @@ func (n *layer) containerList(ctx context.Context) ([]BucketInfo, error) {
 		return nil, err
 	}
 
-	req := new(container.ListRequest)
-	req.OwnerID = n.uid
-	req.SetTTL(service.SingleForwardingTTL)
-	// req.SetBearer(bearer)
-
 	_ = bearer
 
-	if err := service.SignRequestData(n.key, req); err != nil {
+	cli, tkn, err := n.prepareClient(ctx)
-		n.log.Error("could not prepare request",
-			zap.String("request_id", rid),
-			zap.Error(err))
-		return nil, err
-	}
-
-	conn, err := n.cli.GetConnection(ctx)
 	if err != nil {
 		n.log.Error("could not prepare client",
 			zap.String("request_id", rid),
@@ -113,20 +116,24 @@ func (n *layer) containerList(ctx context.Context) ([]BucketInfo, error) {
 		return nil, err
 	}
 
-	// todo: think about timeout
+	// own, err := GetOwnerID(bearer)
-	ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
+	// if err != nil {
-	defer cancel()
+	// 	n.log.Error("could not fetch owner id",
+	// 		zap.String("request_id", rid),
+	// 		zap.Error(err))
+	// 	return nil, err
+	// }
 
-	res, err := container.NewServiceClient(conn).List(ctx, req)
+	res, err := cli.ListContainers(ctx, tkn.OwnerID(), client.WithSession(tkn))
 	if err != nil {
-		n.log.Error("could not list buckets",
+		n.log.Error("could not fetch container",
 			zap.String("request_id", rid),
 			zap.Error(err))
 		return nil, err
 	}
 
-	list := make([]BucketInfo, 0, len(res.CID))
+	list := make([]*BucketInfo, 0, len(res))
-	for _, cid := range res.CID {
+	for _, cid := range res {
 		info, err := n.containerInfo(ctx, cid)
 		if err != nil {
 			n.log.Error("could not fetch container info",
@@ -135,7 +142,7 @@ func (n *layer) containerList(ctx context.Context) ([]BucketInfo, error) {
 			continue
 		}
 
-		list = append(list, *info)
+		list = append(list, info)
 	}
 
 	return list, nil

api/layer/layer.go

@@ -4,14 +4,18 @@ import (
 	"context"
 	"crypto/ecdsa"
 	"io"
+	"net/url"
 	"strings"
 	"time"
 
-	"github.com/nspcc-dev/neofs-api-go/object"
+	"github.com/nspcc-dev/neofs-api-go/pkg"
-	"github.com/nspcc-dev/neofs-api-go/refs"
+	"github.com/nspcc-dev/neofs-api-go/pkg/client"
-	"github.com/nspcc-dev/neofs-api-go/service"
+	"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-s3-gate/api"
 	"github.com/nspcc-dev/neofs-s3-gate/api/pool"
+	"github.com/pkg/errors"
 	"go.uber.org/zap"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
@@ -19,10 +23,19 @@ import (
 
 type (
 	layer struct {
+		uid *owner.ID
 		log *zap.Logger
 		cli pool.Client
-		uid refs.OwnerID
 		key *ecdsa.PrivateKey
+
+		reqTimeout time.Duration
+	}
+
+	Params struct {
+		Pool    pool.Client
+		Logger  *zap.Logger
+		Timeout time.Duration
+		NFKey   *ecdsa.PrivateKey
 	}
 
 	GetObjectParams struct {
@@ -50,13 +63,13 @@ type (
 	}
 
 	NeoFS interface {
-		Get(ctx context.Context, address refs.Address) (*object.Object, error)
+		Get(ctx context.Context, address *object.Address) (*object.Object, error)
 	}
 
 	Client interface {
 		NeoFS
 
-		ListBuckets(ctx context.Context) ([]BucketInfo, error)
+		ListBuckets(ctx context.Context) ([]*BucketInfo, error)
 		GetBucketInfo(ctx context.Context, name string) (*BucketInfo, error)
 
 		GetObject(ctx context.Context, p *GetObjectParams) error
@@ -73,65 +86,47 @@ type (
 	}
 )
 
-// AWS3NameHeader key in the object neofs.
-const AWS3NameHeader = "filename"
-
 // NewGatewayLayer creates instance of layer. It checks credentials
 // and establishes gRPC connection with node.
-func NewLayer(log *zap.Logger, cli pool.Client, key *ecdsa.PrivateKey) (Client, error) {
+func NewLayer(p *Params) (Client, error) {
-	uid, err := refs.NewOwnerID(&key.PublicKey)
+	wallet, err := owner.NEO3WalletFromPublicKey(&p.NFKey.PublicKey)
 	if err != nil {
 		return nil, err
 	}
+
+	uid := owner.NewID()
+	uid.SetNeo3Wallet(wallet)
+
 	return &layer{
-		cli: cli,
-		key: key,
-		log: log,
 		uid: uid,
+		cli: p.Pool,
+		key: p.NFKey,
+		log: p.Logger,
+
+		reqTimeout: p.Timeout,
 	}, nil
 }
 
 // Get NeoFS Object by refs.Address (should be used by auth.Center)
-func (n *layer) Get(ctx context.Context, address refs.Address) (*object.Object, error) {
+func (n *layer) Get(ctx context.Context, address *object.Address) (*object.Object, error) {
-	conn, err := n.cli.GetConnection(ctx)
+	cli, tkn, err := n.prepareClient(ctx)
 	if err != nil {
 		return nil, err
 	}
 
-	token, err := n.cli.SessionToken(ctx, &pool.SessionParams{
+	gop := new(client.GetObjectParams)
-		Conn: conn,
+	gop.WithAddress(address)
-		Addr: address,
-		Verb: service.Token_Info_Get,
-	})
 
-	if err != nil {
+	return cli.GetObject(ctx, gop, client.WithSession(tkn))
-		return nil, err
-	}
-
-	req := new(object.GetRequest)
-	req.Address = address
-	req.SetTTL(service.SingleForwardingTTL)
-	req.SetToken(token)
-
-	err = service.SignRequestData(n.key, req)
-	if err != nil {
-		return nil, err
-	}
-
-	// todo: think about timeout
-	ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
-	defer cancel()
-
-	cli, err := object.NewServiceClient(conn).Get(ctx, req)
-	if err != nil {
-		return nil, err
-	}
-
-	return receiveObject(cli)
 }
 
 // GetBucketInfo returns bucket name.
 func (n *layer) GetBucketInfo(ctx context.Context, name string) (*BucketInfo, error) {
+	name, err := url.QueryUnescape(name)
+	if err != nil {
+		return nil, err
+	}
+
 	list, err := n.containerList(ctx)
 	if err != nil {
 		return nil, err
@@ -139,7 +134,7 @@ func (n *layer) GetBucketInfo(ctx context.Context, name string) (*BucketInfo, er
 
 	for _, bkt := range list {
 		if bkt.Name == name {
-			return &bkt, nil
+			return bkt, nil
 		}
 	}
 
@@ -148,7 +143,7 @@ func (n *layer) GetBucketInfo(ctx context.Context, name string) (*BucketInfo, er
 
 // ListBuckets returns all user containers. Name of the bucket is a container
 // id. Timestamp is omitted since it is not saved in neofs container.
-func (n *layer) ListBuckets(ctx context.Context) ([]BucketInfo, error) {
+func (n *layer) ListBuckets(ctx context.Context) ([]*BucketInfo, error) {
 	return n.containerList(ctx)
 }
 
@@ -160,31 +155,32 @@ func (n *layer) ListObjects(ctx context.Context, p *ListObjectsParams) (*ListObj
 	//       pagination must be implemented with cache, because search results
 	//       may be different between search calls
 	var (
+		err       error
+		bkt       *BucketInfo
+		ids       []*object.ID
 		result    ListObjectsInfo
 		uniqNames = make(map[string]struct{})
 	)
 
-	bkt, err := n.GetBucketInfo(ctx, p.Bucket)
+	if bkt, err = n.GetBucketInfo(ctx, p.Bucket); err != nil {
-	if err != nil {
+		return nil, err
+	} else if ids, err = n.objectSearch(ctx, &findParams{cid: bkt.CID}); err != nil {
 		return nil, err
 	}
 
-	objectIDs, err := n.objectSearchContainer(ctx, bkt.CID)
+	ln := len(ids)
-	if err != nil {
-		return nil, err
-	}
-
-	ln := len(objectIDs)
 	// todo: check what happens if there is more than maxKeys objects
 	if ln > p.MaxKeys {
-		result.IsTruncated = true
 		ln = p.MaxKeys
+		result.IsTruncated = true
 	}
 
-	result.Objects = make([]ObjectInfo, 0, ln)
+	result.Objects = make([]*ObjectInfo, 0, ln)
 
-	for i := 0; i < ln; i++ {
+	for _, id := range ids {
-		addr := refs.Address{ObjectID: objectIDs[i], CID: bkt.CID}
+		addr := object.NewAddress()
+		addr.SetObjectID(id)
+		addr.SetContainerID(bkt.CID)
 
 		meta, err := n.objectHead(ctx, addr)
 		if err != nil {
@@ -192,17 +188,17 @@ func (n *layer) ListObjects(ctx context.Context, p *ListObjectsParams) (*ListObj
 			continue
 		}
 
-		// ignore tombstone objects
+		// // ignore tombstone objects
-		_, hdr := meta.LastHeader(object.HeaderType(object.TombstoneHdr))
+		// _, hdr := meta.LastHeader(object.HeaderType(object.TombstoneHdr))
-		if hdr != nil {
+		// if hdr != nil {
-			continue
+		// 	continue
-		}
+		// }
 
 		// ignore storage group objects
-		_, hdr = meta.LastHeader(object.HeaderType(object.StorageGroupHdr))
+		// _, hdr = meta.LastHeader(object.HeaderType(object.StorageGroupHdr))
-		if hdr != nil {
+		// if hdr != nil {
-			continue
+		// 	continue
-		}
+		// }
 
 		// dirs don't exist in neofs, gateway stores full path to the file
 		// in object header, e.g. `filename`:`/this/is/path/file.txt`
@@ -222,11 +218,13 @@ func (n *layer) ListObjects(ctx context.Context, p *ListObjectsParams) (*ListObj
 			)
 
 			if ind < 0 { // if there are not sub-entities in tail - file
-				oi = objectInfoFromMeta(meta)
+				oi = objectInfoFromMeta(bkt, meta)
 			} else { // if there are sub-entities in tail - dir
 				oi = &ObjectInfo{
-					Owner:  meta.SystemHeader.OwnerID,
+					id: meta.GetID(),
-					Bucket: meta.SystemHeader.CID.String(),
+
+					Owner:  meta.GetOwnerID(),
+					Bucket: bkt.Name,
 					Name:   tail[:ind+1], // dir MUST have slash symbol in the end
 					// IsDir:  true,
 				}
@@ -236,7 +234,7 @@ func (n *layer) ListObjects(ctx context.Context, p *ListObjectsParams) (*ListObj
 			if _, ok := uniqNames[oi.Name]; !ok {
 				uniqNames[oi.Name] = struct{}{}
 
-				result.Objects = append(result.Objects, *oi)
+				result.Objects = append(result.Objects, oi)
 			}
 		}
 	}
@@ -246,105 +244,81 @@ func (n *layer) ListObjects(ctx context.Context, p *ListObjectsParams) (*ListObj
 
 // GetObject from storage.
 func (n *layer) GetObject(ctx context.Context, p *GetObjectParams) error {
-	cid, err := refs.CIDFromString(p.Bucket)
+	var (
-	if err != nil {
+		err error
+		oid *object.ID
+		bkt *BucketInfo
+	)
+
+	if bkt, err = n.GetBucketInfo(ctx, p.Bucket); err != nil {
+		return errors.Wrapf(err, "bucket = %s", p.Bucket)
+	} else if oid, err = n.objectFindID(ctx, &findParams{cid: bkt.CID, val: p.Object}); err != nil {
 		return err
 	}
 
-	oid, err := n.objectFindID(ctx, cid, p.Object, false)
+	addr := object.NewAddress()
-	if err != nil {
+	addr.SetObjectID(oid)
-		return err
+	addr.SetContainerID(bkt.CID)
-	}
+
+	_, err = n.objectGet(ctx, &getParams{
+		Writer: p.Writer,
 
-	addr := refs.Address{
-		ObjectID: oid,
-		CID:      cid,
-	}
-	_, err = n.objectGet(ctx, getParams{
 		addr: addr,
-		start:  p.Offset,
+
+		offset: p.Offset,
 		length: p.Length,
-		writer: p.Writer,
 	})
 
 	return err
 }
 
 // GetObjectInfo returns meta information about the object.
-func (n *layer) GetObjectInfo(ctx context.Context, bucketName, objectName string) (*ObjectInfo, error) {
+func (n *layer) GetObjectInfo(ctx context.Context, bucketName, filename string) (*ObjectInfo, error) {
-	var meta *object.Object
+	var (
-	if cid, err := refs.CIDFromString(bucketName); err != nil {
+		err  error
+		oid  *object.ID
+		bkt  *BucketInfo
+		meta *object.Object
+	)
+
+	if bkt, err = n.GetBucketInfo(ctx, bucketName); err != nil {
 		return nil, err
-	} else if oid, err := n.objectFindID(ctx, cid, objectName, false); err != nil {
+	} else if oid, err = n.objectFindID(ctx, &findParams{cid: bkt.CID, val: filename}); err != nil {
-		return nil, err
-	} else if meta, err = n.objectHead(ctx, refs.Address{CID: cid, ObjectID: oid}); err != nil {
 		return nil, err
 	}
-	return objectInfoFromMeta(meta), nil
+
+	addr := object.NewAddress()
+	addr.SetObjectID(oid)
+	addr.SetContainerID(bkt.CID)
+
+	if meta, err = n.objectHead(ctx, addr); err != nil {
+		return nil, err
+	}
+
+	return objectInfoFromMeta(bkt, meta), nil
+}
+
+func GetOwnerID(tkn *token.BearerToken) (*owner.ID, error) {
+
+	switch pkg.SDKVersion().GetMajor() {
+	case 2:
+		id := tkn.ToV2().GetBody().GetOwnerID()
+		return owner.NewIDFromV2(id), nil
+	default:
+		return nil, errors.New("unknown version")
+	}
 }
 
 // PutObject into storage.
 func (n *layer) PutObject(ctx context.Context, p *PutObjectParams) (*ObjectInfo, error) {
-	cid, err := refs.CIDFromString(p.Bucket)
+	return n.objectPut(ctx, p)
-	if err != nil {
-		return nil, err
-	}
-
-	_, err = n.objectFindID(ctx, cid, p.Object, true)
-	if err == nil {
-		return nil, &api.ObjectAlreadyExists{
-			Bucket: p.Bucket,
-			Object: p.Object,
-		}
-	}
-
-	oid, err := refs.NewObjectID()
-	if err != nil {
-		return nil, err
-	}
-
-	sgid, err := refs.NewSGID()
-	if err != nil {
-		return nil, err
-	}
-
-	addr := refs.Address{
-		ObjectID: oid,
-		CID:      cid,
-	}
-
-	meta, err := n.objectPut(ctx, putParams{
-		addr:        addr,
-		size:        p.Size,
-		name:        p.Object,
-		r:           p.Reader,
-		userHeaders: p.Header,
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	oi := objectInfoFromMeta(meta)
-
-	// for every object create storage group, otherwise object will be deleted
-	addr.ObjectID = sgid
-
-	_, err = n.storageGroupPut(ctx, sgParams{
-		addr:    addr,
-		objects: []refs.ObjectID{oid},
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	return oi, nil
 }
 
 // CopyObject from one bucket into another bucket.
 func (n *layer) CopyObject(ctx context.Context, p *CopyObjectParams) (*ObjectInfo, error) {
 	info, err := n.GetObjectInfo(ctx, p.SrcBucket, p.SrcObject)
 	if err != nil {
-		return nil, err
+		return nil, errors.Wrap(err, "get-object-info")
 	}
 
 	pr, pw := io.Pipe()
@@ -356,7 +330,9 @@ func (n *layer) CopyObject(ctx context.Context, p *CopyObjectParams) (*ObjectInf
 			Writer: pw,
 		})
 
-		_ = pw.CloseWithError(err)
+		if err = pw.CloseWithError(err); err != nil {
+			n.log.Error("could not get object", zap.Error(err))
+		}
 	}()
 
 	// set custom headers
@@ -374,28 +350,34 @@ func (n *layer) CopyObject(ctx context.Context, p *CopyObjectParams) (*ObjectInf
 }
 
 // DeleteObject removes all objects with passed nice name.
-func (n *layer) DeleteObject(ctx context.Context, bucket, object string) error {
+func (n *layer) DeleteObject(ctx context.Context, bucket, filename string) error {
-	cid, err := refs.CIDFromString(bucket)
+	var (
-	if err != nil {
+		err error
-		return &api.DeleteError{
+		ids []*object.ID
-			Err:    err,
+		bkt *BucketInfo
-			Object: object,
+	)
-		}
-	}
 
-	ids, err := n.objectFindIDs(ctx, cid, object)
+	if bkt, err = n.GetBucketInfo(ctx, bucket); err != nil {
-	if err != nil {
 		return &api.DeleteError{
 			Err:    err,
-			Object: object,
+			Object: filename,
+		}
+	} else if ids, err = n.objectSearch(ctx, &findParams{cid: bkt.CID, val: filename}); err != nil {
+		return &api.DeleteError{
+			Err:    err,
+			Object: filename,
 		}
 	}
 
 	for _, id := range ids {
-		if err = n.objectDelete(ctx, delParams{addr: refs.Address{CID: cid, ObjectID: id}}); err != nil {
+		addr := object.NewAddress()
+		addr.SetObjectID(id)
+		addr.SetContainerID(bkt.CID)
+
+		if err = n.objectDelete(ctx, addr); err != nil {
 			return &api.DeleteError{
 				Err:    err,
-				Object: object,
+				Object: filename,
 			}
 		}
 	}

api/layer/object.go

@@ -1,590 +1,232 @@
 package layer
 
 import (
+	"bufio"
+	"bytes"
 	"context"
 	"io"
+	"net/http"
+	"net/url"
+	"strconv"
 	"time"
 
-	"github.com/nspcc-dev/neofs-api-go/object"
+	"github.com/nspcc-dev/neofs-api-go/pkg/client"
-	"github.com/nspcc-dev/neofs-api-go/query"
+	"github.com/nspcc-dev/neofs-api-go/pkg/container"
-	"github.com/nspcc-dev/neofs-api-go/refs"
+	"github.com/nspcc-dev/neofs-api-go/pkg/object"
-	"github.com/nspcc-dev/neofs-api-go/service"
+	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
-	"github.com/nspcc-dev/neofs-api-go/storagegroup"
+	"github.com/nspcc-dev/neofs-api-go/pkg/token"
-	"github.com/nspcc-dev/neofs-s3-gate/api/pool"
+	"github.com/nspcc-dev/neofs-s3-gate/api"
 	"github.com/pkg/errors"
-	"go.uber.org/zap"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
 )
 
-const (
-	dataChunkSize = 3 * object.UnitsMB
-	objectVersion = 1
-)
-
 type (
-	putParams struct {
+	findParams struct {
-		addr        refs.Address
+		val string
-		name        string
+		cid *container.ID
-		size        int64
-		r           io.Reader
-		userHeaders map[string]string
-	}
-
-	sgParams struct {
-		addr    refs.Address
-		objects []refs.ObjectID
-	}
-
-	delParams struct {
-		addr refs.Address
 	}
 
 	getParams struct {
-		addr   refs.Address
+		io.Writer
-		start  int64
+
+		addr *object.Address
+
+		offset int64
 		length int64
-		writer io.Writer
 	}
 )
 
-// objectSearchContainer returns all available objects in the container.
+func (n *layer) prepareClient(ctx context.Context) (*client.Client, *token.SessionToken, error) {
-func (n *layer) objectSearchContainer(ctx context.Context, cid refs.CID) ([]refs.ObjectID, error) {
+	conn, err := n.cli.Connection(ctx)
-	var q query.Query
-	q.Filters = append(q.Filters, query.Filter{
-		Type: query.Filter_Exact,
-		Name: object.KeyRootObject,
-	})
-
-	conn, err := n.cli.GetConnection(ctx)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
-	queryBinary, err := q.Marshal()
+	tkn, err := n.cli.Token(ctx, conn)
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
-	token, err := n.cli.SessionToken(ctx, &pool.SessionParams{
+	cli, err := client.New(n.key, client.WithGRPCConnection(conn))
-		Conn: conn,
-		Addr: refs.Address{CID: cid},
-		Verb: service.Token_Info_Search,
-	})
 	if err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
-	req := new(object.SearchRequest)
+	return cli, tkn, nil
-	req.Query = queryBinary
-	req.QueryVersion = 1
-	req.ContainerID = cid
-	req.SetTTL(service.SingleForwardingTTL)
-	req.SetToken(token)
-	// req.SetBearer(bearerToken)
-
-	err = service.SignRequestData(n.key, req)
-	if err != nil {
-		return nil, err
-	}
-
-	// todo: think about timeout
-	ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
-	defer cancel()
-
-	searchClient, err := object.NewServiceClient(conn).Search(ctx, req)
-	if err != nil {
-		return nil, err
-	}
-
-	var (
-		response []refs.Address
-		result   []refs.ObjectID
-	)
-
-	for {
-		resp, err := searchClient.Recv()
-		if err != nil {
-			if err == io.EOF {
-				break
-			}
-
-			return nil, errors.New("search command received error")
-		}
-
-		response = append(response, resp.Addresses...)
-	}
-
-	for i := range response {
-		result = append(result, response[i].ObjectID)
-	}
-
-	return result, nil
 }
 
-// objectFindIDs returns object id's (uuid) based on they nice name in s3. If
+// objectSearch returns all available objects by search params.
-// nice name is uuid compatible, then function returns it.
+func (n *layer) objectSearch(ctx context.Context, p *findParams) ([]*object.ID, error) {
-func (n *layer) objectFindIDs(ctx context.Context, cid refs.CID, name string) ([]refs.ObjectID, error) {
+	filename, err := url.QueryUnescape(p.val)
-	var q query.Query
-
-	q.Filters = append(q.Filters, query.Filter{
-		Type: query.Filter_Exact,
-		Name: object.KeyRootObject,
-	})
-	q.Filters = append(q.Filters, query.Filter{
-		Type:  query.Filter_Exact,
-		Name:  AWS3NameHeader,
-		Value: name,
-	})
-
-	queryBinary, err := q.Marshal()
 	if err != nil {
 		return nil, err
 	}
 
-	conn, err := n.cli.GetConnection(ctx)
+	cli, tkn, err := n.prepareClient(ctx)
 	if err != nil {
 		return nil, err
 	}
 
-	token, err := n.cli.SessionToken(ctx, &pool.SessionParams{
+	filter := object.NewSearchFilters()
-		Conn: conn,
+	filter.AddRootFilter()
-		Addr: refs.Address{CID: cid},
+
-		Verb: service.Token_Info_Search,
+	sop := new(client.SearchObjectParams)
-	})
+	sop.WithContainerID(p.cid)
-	if err != nil {
+
-		return nil, err
+	if p.val != "" {
+		filter.AddFilter(object.AttributeFileName, filename, object.MatchStringEqual)
 	}
 
-	req := new(object.SearchRequest)
+	sop.WithSearchFilters(filter)
-	req.Query = queryBinary
-	req.QueryVersion = 1
-	req.ContainerID = cid
-	req.SetTTL(service.SingleForwardingTTL)
-	req.SetToken(token)
-	// req.SetBearer(bearerToken)
 
-	err = service.SignRequestData(n.key, req)
+	return cli.SearchObject(ctx, sop, client.WithSession(tkn))
-	if err != nil {
-		return nil, err
-	}
-
-	// todo: think about timeout
-	ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
-	defer cancel()
-
-	searchClient, err := object.NewServiceClient(conn).Search(ctx, req)
-	if err != nil {
-		return nil, err
-	}
-
-	var response []refs.Address
-
-	for {
-		resp, err := searchClient.Recv()
-		if err != nil {
-			if err == io.EOF {
-				break
-			}
-
-			return nil, errors.New("search command received error")
-		}
-
-		response = append(response, resp.Addresses...)
-	}
-
-	switch ln := len(response); {
-	case ln > 0:
-		result := make([]refs.ObjectID, 0, len(response))
-		for i := range response {
-			result = append(result, response[i].ObjectID)
-		}
-
-		return result, nil
-	default:
-		return nil, errors.New("object not found")
-	}
 }
 
 // objectFindID returns object id (uuid) based on it's nice name in s3. If
 // nice name is uuid compatible, then function returns it.
-func (n *layer) objectFindID(ctx context.Context, cid refs.CID, name string, put bool) (refs.ObjectID, error) {
+func (n *layer) objectFindID(ctx context.Context, p *findParams) (*object.ID, error) {
-	var id refs.ObjectID
+	if result, err := n.objectSearch(ctx, p); err != nil {
-
+		return nil, err
-	if result, err := n.objectFindIDs(ctx, cid, name); err != nil {
-		return id, err
 	} else if ln := len(result); ln == 0 {
-		// Minio lists all objects with and without nice names. All objects
+		return nil, status.Error(codes.NotFound, "object not found")
-		// without nice name still have "name" in terms of minio - uuid encoded
-		// into string. There is a tricky case when user upload object
-		// with nice name that is encoded uuid.
-		// There is an optimisation to parse name and return uuid if it name is uuid
-		// compatible. It _should not_ work in case of put operation, because object
-		// with uuid compatible nice name may not exist. Therefore this optimization
-		// breaks object put logic and must be turned off.
-		if !put {
-			err := id.Parse(name)
-			if err == nil {
-				return id, nil
-			}
-		}
-		return id, status.Error(codes.NotFound, "object not found")
 	} else if ln == 1 {
 		return result[0], nil
 	}
 
-	return id, errors.New("several objects with the same name found")
+	return nil, errors.New("several objects with the same name found")
 }
 
 // objectHead returns all object's headers.
-func (n *layer) objectHead(ctx context.Context, addr refs.Address) (*object.Object, error) {
+func (n *layer) objectHead(ctx context.Context, addr *object.Address) (*object.Object, error) {
-
+	cli, tkn, err := n.prepareClient(ctx)
-	conn, err := n.cli.GetConnection(ctx)
 	if err != nil {
 		return nil, err
 	}
 
-	token, err := n.cli.SessionToken(ctx, &pool.SessionParams{
+	ohp := new(client.ObjectHeaderParams)
-		Conn: conn,
+	ohp.WithAddress(addr)
-		Addr: addr,
+	ohp.WithAllFields()
-		Verb: service.Token_Info_Head,
-	})
-	if err != nil {
-		return nil, err
-	}
 
-	req := new(object.HeadRequest)
+	return cli.GetObjectHeader(ctx, ohp, client.WithSession(tkn))
-	req.Address = addr
-	req.FullHeaders = true
-	req.SetTTL(service.SingleForwardingTTL)
-	req.SetToken(token)
-	// req.SetBearer(bearerToken)
-
-	err = service.SignRequestData(n.key, req)
-	if err != nil {
-		return nil, err
-	}
-
-	// todo: think about timeout
-	ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
-	defer cancel()
-
-	res, err := object.NewServiceClient(conn).Head(ctx, req)
-	if err != nil {
-		return nil, err
-	}
-
-	return res.Object, nil
-}
-
-func receiveObject(cli object.Service_GetClient) (*object.Object, error) {
-	var (
-		off int
-		buf []byte
-		obj *object.Object
-	)
-
-	for {
-		resp, err := cli.Recv()
-		if err != nil {
-			if err == io.EOF {
-				break
-			}
-
-			return nil, err
-		}
-
-		switch o := resp.R.(type) {
-		case *object.GetResponse_Object:
-			if obj != nil {
-				return nil, errors.New("object headers already received")
-			} else if _, hdr := o.Object.LastHeader(object.HeaderType(object.TombstoneHdr)); hdr != nil {
-				return nil, errors.New("object already removed")
-			}
-
-			obj = o.Object
-			buf = make([]byte, obj.SystemHeader.PayloadLength)
-
-			if len(obj.Payload) > 0 {
-				off += copy(buf, obj.Payload)
-			}
-		case *object.GetResponse_Chunk:
-			if obj == nil {
-				return nil, errors.New("object headers not received")
-			}
-			off += copy(buf[off:], o.Chunk)
-		default:
-			return nil, errors.Errorf("unknown response %T", o)
-		}
-	}
-
-	if obj == nil {
-		return nil, errors.New("object headers not received")
-	}
-	obj.Payload = buf
-
-	return obj, nil
 }
 
 // objectGet and write it into provided io.Reader.
-func (n *layer) objectGet(ctx context.Context, p getParams) (*object.Object, error) {
+func (n *layer) objectGet(ctx context.Context, p *getParams) (*object.Object, error) {
-	conn, err := n.cli.GetConnection(ctx)
+	cli, tkn, err := n.prepareClient(ctx)
 	if err != nil {
 		return nil, err
 	}
 
-	token, err := n.cli.SessionToken(ctx, &pool.SessionParams{
+	// prepare length/offset writer
-		Conn: conn,
+	b := bufio.NewWriter(p.Writer)
-		Addr: p.addr,
+	w := newWriter(b, p.offset, p.length)
-		Verb: service.Token_Info_Get,
+	writer := newWriter(w, p.offset, p.length)
-	})
-	if err != nil {
-		return nil, err
-	}
 
-	// todo: replace object.Get() call by object.GetRange() for
+	gop := new(client.GetObjectParams)
-	//       true sequential reading support; it will be possible when
+	gop.WithAddress(p.addr)
-	//       object.GetRange() response message become gRPC stream.
+	gop.WithPayloadWriter(writer)
-	req := new(object.GetRequest)
-	req.Address = p.addr
-	req.SetTTL(service.SingleForwardingTTL)
-	req.SetToken(token)
-	// req.SetBearer(bearerToken)
 
-	err = service.SignRequestData(n.key, req)
+	return cli.GetObject(ctx, gop, client.WithSession(tkn))
-	if err != nil {
-		return nil, err
-	}
-
-	// todo: think about timeout
-	ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
-	defer cancel()
-
-	var obj *object.Object
-
-	if cli, err := object.NewServiceClient(conn).Get(ctx, req); err != nil {
-		return nil, err
-	} else if obj, err = receiveObject(cli); err != nil {
-		return nil, err
-	} else if ln := int64(obj.SystemHeader.PayloadLength); p.start+p.length > ln {
-		return nil, errors.Errorf("slice bounds out of range: len = %d, start = %d, offset = %d",
-			ln, p.start, p.length)
-	} else if _, err = p.writer.Write(obj.Payload[p.start : p.start+p.length]); err != nil {
-		return nil, err
-	}
-
-	// remove payload:
-	obj.Payload = nil
-
-	return obj, nil
 }
 
-// objectPut into neofs, took payload from io.Reader.
+// objectPut into NeoFS, took payload from io.Reader.
-func (n *layer) objectPut(ctx context.Context, p putParams) (*object.Object, error) {
+func (n *layer) objectPut(ctx context.Context, p *PutObjectParams) (*ObjectInfo, error) {
-	conn, err := n.cli.GetConnection(ctx)
+	var (
+		err error
+		obj string
+		own *owner.ID
+		oid *object.ID
+		bkt *BucketInfo
+		// brt *token.BearerToken
+	)
+
+	// if brt, err = auth.GetBearerToken(ctx); err != nil {
+	// 	return nil, err
+	// }
+
+	// else if own, err = GetOwnerID(brt); err != nil {
+	// 	return nil, err
+	// }
+
+	_ = own
+
+	if obj, err = url.QueryUnescape(p.Object); err != nil {
+		return nil, err
+	} else if bkt, err = n.GetBucketInfo(ctx, p.Bucket); err != nil {
+		return nil, err
+	} else if _, err = n.objectFindID(ctx, &findParams{cid: bkt.CID, val: p.Object}); err == nil {
+		return nil, &api.ObjectAlreadyExists{
+			Bucket: p.Bucket,
+			Object: p.Object,
+		}
+	}
+
+	cli, tkn, err := n.prepareClient(ctx)
 	if err != nil {
 		return nil, err
 	}
 
-	token, err := n.cli.SessionToken(ctx, &pool.SessionParams{
+	attributes := make([]*object.Attribute, 0, len(p.Header)+1)
-		Conn: conn,
+
-		Addr: p.addr,
+	unix := strconv.FormatInt(time.Now().UTC().Unix(), 10)
-		Verb: service.Token_Info_Put,
+
-	})
+	filename := object.NewAttribute()
-	if err != nil {
+	filename.SetKey(object.AttributeFileName)
-		n.log.Error("could not prepare token",
+	filename.SetValue(obj)
-			zap.Error(err))
+
-		return nil, err
+	createdAt := object.NewAttribute()
+	createdAt.SetKey(object.AttributeTimestamp)
+	createdAt.SetValue(unix)
+
+	attributes = append(attributes, filename, createdAt)
+
+	for k, v := range p.Header {
+		ua := object.NewAttribute()
+		ua.SetKey(k)
+		ua.SetValue(v)
+
+		attributes = append(attributes, ua)
 	}
 
-	putClient, err := object.NewServiceClient(conn).Put(ctx)
+	b := new(bytes.Buffer)
-	if err != nil {
+	r := io.TeeReader(p.Reader, b)
-		n.log.Error("could not prepare PutClient",
+
-			zap.Error(err))
+	raw := object.NewRaw()
-		return nil, err
+	raw.SetOwnerID(tkn.OwnerID()) // should be replaced with BearerToken.Issuer()
+	raw.SetContainerID(bkt.CID)
+	raw.SetAttributes(attributes...)
+
+	pop := new(client.PutObjectParams)
+	pop.WithPayloadReader(r)
+	pop.WithObject(raw.Object())
+
+	if oid, err = cli.PutObject(ctx, pop, client.WithSession(tkn)); err != nil {
+		return nil, errors.Wrapf(err, "owner_id = %s", tkn.OwnerID())
 	}
 
-	if p.userHeaders == nil {
+	return &ObjectInfo{
-		p.userHeaders = make(map[string]string)
+		id: oid,
-	}
 
-	// Set object name if not set before
+		Bucket:      p.Bucket,
-	if _, ok := p.userHeaders[AWS3NameHeader]; !ok {
+		Name:        p.Object,
-		p.userHeaders[AWS3NameHeader] = p.name
+		Size:        p.Size,
-	}
+		Created:     time.Now(),
-
+		ContentType: http.DetectContentType(b.Bytes()),
-	readBuffer := make([]byte, dataChunkSize)
+		Owner:       own,
-	obj := &object.Object{
+		Headers:     p.Header,
-		SystemHeader: object.SystemHeader{
+	}, nil
-			Version:       objectVersion,
-			ID:            p.addr.ObjectID,
-			OwnerID:       n.uid,
-			CID:           p.addr.CID,
-			PayloadLength: uint64(p.size),
-		},
-		Headers: parseUserHeaders(p.userHeaders),
-	}
-
-	req := object.MakePutRequestHeader(obj)
-	req.SetTTL(service.SingleForwardingTTL)
-	req.SetToken(token)
-	// req.SetBearer(bearerToken)
-
-	err = service.SignRequestData(n.key, req)
-	if err != nil {
-		n.log.Error("could not prepare request",
-			zap.Error(err))
-		return nil, err
-	}
-
-	err = putClient.Send(req)
-	if err != nil {
-		n.log.Error("could not send request",
-			zap.Error(err))
-		return nil, err
-	}
-
-	read, err := p.r.Read(readBuffer)
-	for read > 0 {
-		if err != nil && err != io.EOF {
-			n.log.Error("something went wrong",
-				zap.Error(err))
-			return nil, err
-		}
-
-		if read > 0 {
-			req := object.MakePutRequestChunk(readBuffer[:read])
-			req.SetTTL(service.SingleForwardingTTL)
-			// req.SetBearer(bearerToken)
-
-			err = service.SignRequestData(n.key, req)
-			if err != nil {
-				n.log.Error("could not sign chunk request",
-					zap.Error(err))
-				return nil, err
-			}
-
-			err = putClient.Send(req)
-			if err != nil && err != io.EOF {
-				n.log.Error("could not send chunk",
-					zap.Error(err))
-				return nil, err
-			}
-		}
-
-		read, err = p.r.Read(readBuffer)
-	}
-
-	_, err = putClient.CloseAndRecv()
-	if err != nil {
-		n.log.Error("could not finish request",
-			zap.Error(err))
-		return nil, err
-	}
-
-	// maybe make a head?
-	return obj, nil
-}
-
-// storageGroupPut prepares storage group object and put it into neofs.
-func (n *layer) storageGroupPut(ctx context.Context, p sgParams) (*object.Object, error) {
-	conn, err := n.cli.GetConnection(ctx)
-	if err != nil {
-		return nil, err
-	}
-
-	token, err := n.cli.SessionToken(ctx, &pool.SessionParams{
-		Conn: conn,
-		Addr: p.addr,
-		Verb: service.Token_Info_Put,
-	})
-	if err != nil {
-		return nil, err
-	}
-
-	// todo: think about timeout
-	ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
-	defer cancel()
-
-	putClient, err := object.NewServiceClient(conn).Put(ctx)
-	if err != nil {
-		return nil, err
-	}
-
-	sg := &object.Object{
-		SystemHeader: object.SystemHeader{
-			Version: objectVersion,
-			ID:      p.addr.ObjectID,
-			OwnerID: n.uid,
-			CID:     p.addr.CID,
-		},
-		Headers: make([]object.Header, 0, len(p.objects)),
-	}
-
-	for i := range p.objects {
-		sg.AddHeader(&object.Header{Value: &object.Header_Link{
-			Link: &object.Link{Type: object.Link_StorageGroup, ID: p.objects[i]},
-		}})
-	}
-
-	sg.SetStorageGroup(new(storagegroup.StorageGroup))
-
-	req := object.MakePutRequestHeader(sg)
-	req.SetTTL(service.SingleForwardingTTL)
-	req.SetToken(token)
-	// req.SetBearer(bearerToken)
-
-	err = service.SignRequestData(n.key, req)
-	if err != nil {
-		return nil, err
-	}
-
-	err = putClient.Send(req)
-	if err != nil {
-		return nil, err
-	}
-
-	_, err = putClient.CloseAndRecv()
-	if err != nil {
-		return nil, err
-	}
-
-	return sg, nil
 }
 
 // objectDelete puts tombstone object into neofs.
-func (n *layer) objectDelete(ctx context.Context, p delParams) error {
+func (n *layer) objectDelete(ctx context.Context, address *object.Address) error {
-	conn, err := n.cli.GetConnection(ctx)
+	cli, tkn, err := n.prepareClient(ctx)
 	if err != nil {
 		return err
 	}
 
-	token, err := n.cli.SessionToken(ctx, &pool.SessionParams{
+	dob := new(client.DeleteObjectParams)
-		Conn: conn,
+	dob.WithAddress(address)
-		Addr: p.addr,
-		Verb: service.Token_Info_Delete,
-	})
-	if err != nil {
-		return err
-	}
 
-	req := new(object.DeleteRequest)
+	return cli.DeleteObject(ctx, dob, client.WithSession(tkn))
-	req.Address = p.addr
-	req.OwnerID = n.uid
-	req.SetTTL(service.SingleForwardingTTL)
-	req.SetToken(token)
-	// req.SetBearer(bearerToken)
-
-	err = service.SignRequestData(n.key, req)
-	if err != nil {
-		return err
-	}
-
-	// todo: think about timeout
-	ctx, cancel := context.WithTimeout(ctx, 30*time.Second)
-	defer cancel()
-
-	_, err = object.NewServiceClient(conn).Delete(ctx, req)
-
-	return err
 }

api/layer/util.go

@@ -3,21 +3,24 @@ package layer
 import (
 	"net/http"
 	"os"
+	"strconv"
 	"strings"
 	"time"
 
-	"github.com/nspcc-dev/neofs-api-go/object"
+	"github.com/nspcc-dev/neofs-api-go/pkg/object"
-	"github.com/nspcc-dev/neofs-api-go/refs"
+	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
 )
 
 type (
 	ObjectInfo struct {
+		id *object.ID
+
 		Bucket      string
 		Name        string
 		Size        int64
 		ContentType string
 		Created     time.Time
-		Owner       refs.OwnerID
+		Owner       *owner.ID
 		Headers     map[string]string
 	}
 
@@ -39,7 +42,7 @@ type (
 		NextContinuationToken string
 
 		// List of objects info for this request.
-		Objects []ObjectInfo
+		Objects []*ObjectInfo
 
 		// List of prefixes for this request.
 		Prefixes []string
@@ -48,68 +51,63 @@ type (
 
 const pathSeparator = string(os.PathSeparator)
 
-func userHeaders(h []object.Header) map[string]string {
+func userHeaders(attrs []*object.Attribute) map[string]string {
-	result := make(map[string]string, len(h))
+	result := make(map[string]string, len(attrs))
 
-	for i := range h {
+	for _, attr := range attrs {
-		switch v := h[i].Value.(type) {
+		result[attr.GetKey()] = attr.GetValue()
-		case *object.Header_UserHeader:
-			result[v.UserHeader.Key] = v.UserHeader.Value
-		default:
-			continue
-		}
 	}
 
 	return result
 }
 
-func objectInfoFromMeta(meta *object.Object) *ObjectInfo {
+func objectInfoFromMeta(bkt *BucketInfo, meta *object.Object) *ObjectInfo {
-	aws3name := meta.SystemHeader.ID.String()
+	var (
+		creation time.Time
+		filename = meta.GetID().String()
+	)
 
-	userHeaders := userHeaders(meta.Headers)
+	userHeaders := userHeaders(meta.GetAttributes())
-	if name, ok := userHeaders[AWS3NameHeader]; ok {
+	if val, ok := userHeaders[object.AttributeFileName]; ok {
-		aws3name = name
+		filename = val
-		delete(userHeaders, name)
+		delete(userHeaders, object.AttributeFileName)
 	}
 
-	mimeType := http.DetectContentType(meta.Payload)
+	if val, ok := userHeaders[object.AttributeTimestamp]; !ok {
+		// ignore empty value
+	} else if dt, err := strconv.ParseInt(val, 10, 64); err == nil {
+		creation = time.Unix(dt, 0)
+		delete(userHeaders, object.AttributeTimestamp)
+	}
+
+	mimeType := http.DetectContentType(meta.GetPayload())
 
 	return &ObjectInfo{
-		Bucket:      meta.SystemHeader.CID.String(),
+		id: meta.GetID(),
-		Name:        aws3name,
+
+		Bucket:      bkt.Name,
+		Name:        filename,
+		Created:     creation,
 		ContentType: mimeType,
 		Headers:     userHeaders,
-		Size:        int64(meta.SystemHeader.PayloadLength),
+		Size:        int64(meta.GetPayloadSize()),
-		Created:     time.Unix(meta.SystemHeader.CreatedAt.UnixTime, 0),
 	}
 }
 
-func parseUserHeaders(h map[string]string) []object.Header {
-	headers := make([]object.Header, 0, len(h))
-
-	for k, v := range h {
-		uh := &object.UserHeader{Key: k, Value: v}
-		headers = append(headers, object.Header{
-			Value: &object.Header_UserHeader{UserHeader: uh},
-		})
-	}
-
-	return headers
-}
-
 func nameFromObject(o *object.Object) (string, string) {
-	var (
+	var name = o.GetID().String()
-		name string
-		uh   = userHeaders(o.Headers)
-	)
 
-	if _, ok := uh[AWS3NameHeader]; !ok {
+	for _, attr := range o.GetAttributes() {
-		name = o.SystemHeader.ID.String()
+		if attr.GetKey() == object.AttributeFileName {
-	} else {
+			name = attr.GetValue()
-		name = uh[AWS3NameHeader]
+
+			break
+		}
 	}
 
 	ind := strings.LastIndex(name, pathSeparator)
 
 	return name[ind+1:], name[:ind+1]
 }
+
+func (o *ObjectInfo) ID() *object.ID { return o.id }

api/layer/writer.go

@@ -0,0 +1,54 @@
+package layer
+
+import "io"
+
+type offsetWriter struct {
+	io.Writer
+
+	written int64
+	skipped int64
+
+	offset int64
+	length int64
+}
+
+func newWriter(w io.Writer, offset, length int64) io.Writer {
+	return &offsetWriter{
+		Writer: w,
+		offset: offset,
+		length: length,
+	}
+}
+
+func (w *offsetWriter) Write(p []byte) (int, error) {
+	ln := len(p)
+	length := int64(ln)
+	offset := w.offset - w.skipped
+
+	if length-offset < 0 {
+		w.skipped += length
+
+		return ln, nil
+	}
+
+	length -= offset
+
+	// Writer should write enough and stop writing
+	// 1. When passed zero length, it should write all bytes except offset
+	// 2. When the written buffer is almost filled (left < length),
+	//    should write some bytes to fill up the buffer
+	// 3. When the written buffer is filled, should stop to write
+
+	if left := w.length - w.written; left == 0 && w.length != 0 {
+		return 0, nil
+	} else if left > 0 && left < length {
+		length = left
+	}
+
+	n, err := w.Writer.Write(p[offset : offset+length])
+
+	w.written += int64(n)
+	w.skipped += offset
+
+	return n, err
+}

api/layer/writer_test.go

@@ -0,0 +1,114 @@
+package layer
+
+import (
+	"bytes"
+	"crypto/rand"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func testBuffer(t *testing.T) []byte {
+	buf := make([]byte, 1024)
+	_, err := rand.Read(buf)
+	require.NoError(t, err)
+
+	return buf
+}
+
+func TestOffsetWriter(t *testing.T) {
+	b := testBuffer(t)
+	k := 64
+	d := len(b) / k
+	s := int64(len(b))
+
+	t.Run("1024 / 100 / 100 bytes success", func(t *testing.T) {
+		w := new(bytes.Buffer)
+		o := int64(100)
+		l := int64(100)
+
+		wt := newWriter(w, o, l)
+		for i := 0; i < k; i++ {
+			_, err := wt.Write(b[i*d : (i+1)*d])
+			require.NoError(t, err)
+		}
+
+		wo := wt.(*offsetWriter)
+
+		require.Equal(t, o, wo.skipped)
+		require.Equal(t, l, wo.written)
+		require.Equal(t, b[o:o+l], w.Bytes())
+	})
+
+	t.Run("1024 / 0 / 100 bytes success", func(t *testing.T) {
+		w := new(bytes.Buffer)
+		o := int64(0)
+		l := int64(100)
+
+		wt := newWriter(w, o, l)
+		for i := 0; i < k; i++ {
+			_, err := wt.Write(b[i*d : (i+1)*d])
+			require.NoError(t, err)
+		}
+
+		wo := wt.(*offsetWriter)
+
+		require.Equal(t, o, wo.skipped)
+		require.Equal(t, l, wo.written)
+		require.Equal(t, b[o:o+l], w.Bytes())
+	})
+
+	t.Run("1024 / 0 / 1024 bytes success", func(t *testing.T) {
+		w := new(bytes.Buffer)
+		o := int64(0)
+		l := int64(1024)
+
+		wt := newWriter(w, o, l)
+		for i := 0; i < k; i++ {
+			_, err := wt.Write(b[i*d : (i+1)*d])
+			require.NoError(t, err)
+		}
+
+		wo := wt.(*offsetWriter)
+
+		require.Equal(t, o, wo.skipped)
+		require.Equal(t, l, wo.written)
+		require.Equal(t, b[o:o+l], w.Bytes())
+	})
+
+	t.Run("should read all data when empty length passed", func(t *testing.T) {
+		w := new(bytes.Buffer)
+		o := int64(0)
+		l := int64(0)
+
+		wt := newWriter(w, o, l)
+		for i := 0; i < k; i++ {
+			_, err := wt.Write(b[i*d : (i+1)*d])
+			require.NoError(t, err)
+		}
+
+		wo := wt.(*offsetWriter)
+
+		require.Equal(t, o, wo.skipped)
+		require.Equal(t, s, wo.written)
+		require.Equal(t, b, w.Bytes())
+	})
+
+	t.Run("should read all data when empty length passed", func(t *testing.T) {
+		w := new(bytes.Buffer)
+		o := int64(0)
+		l := s + 1
+
+		wt := newWriter(w, o, l)
+		for i := 0; i < k; i++ {
+			_, err := wt.Write(b[i*d : (i+1)*d])
+			require.NoError(t, err)
+		}
+
+		wo := wt.(*offsetWriter)
+
+		require.Equal(t, o, wo.skipped)
+		require.Equal(t, s, wo.written)
+		require.Equal(t, b, w.Bytes())
+	})
+}

api/pool/pool.go

@@ -8,8 +8,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/nspcc-dev/neofs-api-go/service"
+	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
-	"github.com/nspcc-dev/neofs-api-go/state"
+	"github.com/nspcc-dev/neofs-api-go/pkg/token"
 	"github.com/pkg/errors"
 	"go.uber.org/atomic"
 	"go.uber.org/zap"
@@ -30,8 +30,8 @@ type (
 
 	Client interface {
 		Status() error
-		GetConnection(context.Context) (*grpc.ClientConn, error)
+		Connection(context.Context) (*grpc.ClientConn, error)
-		SessionToken(ctx context.Context, params *SessionParams) (*service.Token, error)
+		Token(context.Context, *grpc.ClientConn) (*token.SessionToken, error)
 	}
 
 	Pool interface {
@@ -74,20 +74,27 @@ type (
 		currentIdx  *atomic.Int32
 		currentConn *grpc.ClientConn
 
-		reqHealth *state.HealthRequest
+		ping Pinger
 
 		*sync.Mutex
 		nodes  []*node
 		keys   []uint32
 		conns  map[uint32][]*node
+		tokens map[string]*token.SessionToken
+
+		oid *owner.ID
 		key *ecdsa.PrivateKey
-		tokens map[string]*service.Token
 
 		unhealthy *atomic.Error
 	}
+
+	Pinger interface {
+		Call(context.Context, *grpc.ClientConn) error
+	}
 )
 
 var (
+	errNoConnections        = errors.New("no connections")
 	errBootstrapping        = errors.New("bootstrapping")
 	errEmptyConnection      = errors.New("empty connection")
 	errNoHealthyConnections = errors.New("no active connections")
@@ -101,7 +108,7 @@ func New(cfg *Config) (Pool, error) {
 		keys:   make([]uint32, 0),
 		nodes:  make([]*node, 0),
 		conns:  make(map[uint32][]*node),
-		tokens: make(map[string]*service.Token),
+		tokens: make(map[string]*token.SessionToken),
 
 		currentIdx: atomic.NewInt32(-1),
 
@@ -114,6 +121,14 @@ func New(cfg *Config) (Pool, error) {
 		unhealthy: atomic.NewError(errBootstrapping),
 	}
 
+	p.oid = owner.NewID()
+	wallet, err := owner.NEO3WalletFromPublicKey(&p.key.PublicKey)
+	if err != nil {
+		return nil, err
+	}
+
+	p.oid.SetNeo3Wallet(wallet)
+
 	if cfg.GRPCVerbose {
 		grpclog.SetLoggerV2(cfg.GRPCLogger)
 	}
@@ -123,11 +138,8 @@ func New(cfg *Config) (Pool, error) {
 	rand.Seed(seed)
 	cfg.Logger.Info("used random seed", zap.Int64("seed", seed))
 
-	p.reqHealth = new(state.HealthRequest)
+	if p.ping, err = newV2Ping(cfg.PrivateKey); err != nil {
-	p.reqHealth.SetTTL(service.NonForwardingTTL)
+		return nil, err
-
-	if err := service.SignRequestData(cfg.PrivateKey, p.reqHealth); err != nil {
-		return nil, errors.Wrap(err, "could not sign `HealthRequest`")
 	}
 
 	for i := range cfg.Peers {
@@ -147,6 +159,10 @@ func New(cfg *Config) (Pool, error) {
 			zap.Uint32("weight", p.nodes[i].weight))
 	}
 
+	if len(p.nodes) == 0 {
+		return nil, errNoConnections
+	}
+
 	return p, nil
 }
 
@@ -174,12 +190,12 @@ func (p *pool) ReBalance(ctx context.Context) {
 	defer func() {
 		p.Unlock()
 
-		_, err := p.GetConnection(ctx)
+		_, err := p.Connection(ctx)
 		p.unhealthy.Store(err)
 	}()
 
 	keys := make(map[uint32]struct{})
-	tokens := make(map[string]*service.Token)
+	tokens := make(map[string]*token.SessionToken)
 
 	for i := range p.nodes {
 		var (
@@ -187,7 +203,7 @@ func (p *pool) ReBalance(ctx context.Context) {
 			exists bool
 			err    error
 			start  = time.Now()
-			tkn    *service.Token
+			tkn    *token.SessionToken
 			conn   = p.nodes[i].conn
 			weight = p.nodes[i].weight
 		)
@@ -222,7 +238,7 @@ func (p *pool) ReBalance(ctx context.Context) {
 
 			{ // try to prepare token
 				ctx, cancel := context.WithTimeout(ctx, p.reqTimeout)
-				tkn, err = generateToken(ctx, conn, p.key)
+				tkn, err = p.prepareToken(ctx, conn)
 				cancel()
 			}
 
@@ -240,7 +256,7 @@ func (p *pool) ReBalance(ctx context.Context) {
 			p.log.Debug("connected to node", zap.String("address", p.nodes[i].address))
 		} else if tkn, exists = p.tokens[conn.Target()]; exists {
 			// token exists, ignore
-		} else if tkn, err = generateToken(ctx, conn, p.key); err != nil {
+		} else if tkn, err = p.prepareToken(ctx, conn); err != nil {
 			p.log.Error("could not prepare session token",
 				zap.String("address", p.nodes[i].address),
 				zap.Error(err))
@@ -311,7 +327,7 @@ func (p *pool) ReBalance(ctx context.Context) {
 	})
 }
 
-func (p *pool) GetConnection(ctx context.Context) (*grpc.ClientConn, error) {
+func (p *pool) Connection(ctx context.Context) (*grpc.ClientConn, error) {
 	p.Lock()
 	defer p.Unlock()
 
@@ -361,16 +377,7 @@ func (p *pool) isAlive(ctx context.Context, cur *grpc.ClientConn) error {
 		ctx, cancel := context.WithTimeout(ctx, p.reqTimeout)
 		defer cancel()
 
-		res, err := state.NewStatusClient(cur).HealthCheck(ctx, p.reqHealth)
+		return p.ping.Call(ctx, cur)
-		if err != nil {
-			p.log.Warn("could not fetch health-check", zap.Error(err))
-
-			return err
-		} else if !res.Healthy {
-			return errors.New(res.Status)
-		}
-
-		return nil
 	default:
 		return errors.New(st.String())
 	}

api/pool/session.go

@@ -2,122 +2,51 @@ package pool
 
 import (
 	"context"
-	"crypto/ecdsa"
 	"math"
 
-	"github.com/nspcc-dev/neofs-api-go/refs"
+	"go.uber.org/zap"
-	"github.com/nspcc-dev/neofs-api-go/service"
+
-	"github.com/nspcc-dev/neofs-api-go/session"
+	"github.com/nspcc-dev/neofs-api-go/pkg/client"
-	crypto "github.com/nspcc-dev/neofs-crypto"
+	"github.com/nspcc-dev/neofs-api-go/pkg/token"
-	"github.com/pkg/errors"
 	"google.golang.org/grpc"
 )
 
-type (
+// SessionToken returns session token for connection
-	queryParams struct {
+func (p *pool) Token(ctx context.Context, conn *grpc.ClientConn) (*token.SessionToken, error) {
-		key  *ecdsa.PrivateKey
-		addr refs.Address
-		verb service.Token_Info_Verb
-	}
-
-	SessionParams struct {
-		Addr refs.Address
-		Conn *grpc.ClientConn
-		Verb service.Token_Info_Verb
-	}
-)
-
-func (p *pool) fetchToken(ctx context.Context, con *grpc.ClientConn) (*session.Token, error) {
 	p.Lock()
 	defer p.Unlock()
 
-	// if we had token for current connection - return it
+	if tkn, ok := p.tokens[conn.Target()]; ok && tkn != nil {
-	if tkn, ok := p.tokens[con.Target()]; ok {
 		return tkn, nil
 	}
 
-	// try to generate token for connection
+	// prepare session token
-	tkn, err := generateToken(ctx, con, p.key)
+	tkn, err := p.prepareToken(ctx, conn)
 	if err != nil {
 		return nil, err
 	}
 
-	p.tokens[con.Target()] = tkn
+	// save token for current connection
+	p.tokens[conn.Target()] = tkn
+
 	return tkn, nil
 }
 
-// SessionToken returns session token for connection
-func (p *pool) SessionToken(ctx context.Context, params *SessionParams) (*service.Token, error) {
-	var (
-		err error
-		tkn *session.Token
-	)
-
-	if params.Conn == nil {
-		return nil, errors.New("empty connection")
-	} else if tkn, err = p.fetchToken(ctx, params.Conn); err != nil {
-		return nil, err
-	}
-
-	return prepareToken(tkn, queryParams{
-		key:  p.key,
-		addr: params.Addr,
-		verb: params.Verb,
-	})
-}
-
 // creates token using
-func generateToken(ctx context.Context, con *grpc.ClientConn, key *ecdsa.PrivateKey) (*service.Token, error) {
+func (p *pool) prepareToken(ctx context.Context, conn *grpc.ClientConn) (*token.SessionToken, error) {
-	owner, err := refs.NewOwnerID(&key.PublicKey)
+	cli, err := client.New(p.key, client.WithGRPCConnection(conn))
 	if err != nil {
 		return nil, err
 	}
 
-	token := new(service.Token)
+	tkn, err := cli.CreateSession(ctx, math.MaxUint64)
-	token.SetOwnerID(owner)
-	token.SetExpirationEpoch(math.MaxUint64)
-	token.SetOwnerKey(crypto.MarshalPublicKey(&key.PublicKey))
-
-	creator, err := session.NewGRPCCreator(con, key)
 	if err != nil {
 		return nil, err
 	}
 
-	res, err := creator.Create(ctx, token)
+	p.log.Info("token created for connection",
-	if err != nil {
+		zap.String("address", conn.Target()),
-		return nil, err
+		zap.Stringer("owner", tkn.OwnerID()))
-	}
 
-	token.SetID(res.GetID())
+	return tkn, err
-	token.SetSessionKey(res.GetSessionKey())
-
-	return token, nil
-}
-
-func prepareToken(t *service.Token, p queryParams) (*service.Token, error) {
-	sig := make([]byte, len(t.Signature))
-	copy(sig, t.Signature)
-
-	token := &service.Token{
-		Token_Info: service.Token_Info{
-			ID:            t.ID,
-			OwnerID:       t.OwnerID,
-			Verb:          t.Verb,
-			Address:       t.Address,
-			TokenLifetime: t.TokenLifetime,
-			SessionKey:    t.SessionKey,
-			OwnerKey:      t.OwnerKey,
-		},
-		Signature: sig,
-	}
-
-	token.SetAddress(p.addr)
-	token.SetVerb(p.verb)
-
-	err := service.AddSignatureWithKey(p.key, service.NewSignedSessionToken(token))
-	if err != nil {
-		return nil, err
-	}
-
-	return token, nil
 }

api/pool/v2.go

@@ -0,0 +1,36 @@
+package pool
+
+import (
+	"context"
+	"crypto/ecdsa"
+
+	"github.com/nspcc-dev/neofs-api-go/v2/client"
+	"github.com/nspcc-dev/neofs-api-go/v2/netmap"
+	"github.com/nspcc-dev/neofs-api-go/v2/signature"
+	"github.com/pkg/errors"
+	"google.golang.org/grpc"
+)
+
+type v2Ping struct {
+	req *netmap.LocalNodeInfoRequest
+}
+
+func newV2Ping(key *ecdsa.PrivateKey) (Pinger, error) {
+	req := new(netmap.LocalNodeInfoRequest)
+
+	if err := signature.SignServiceMessage(key, req); err != nil {
+		return nil, errors.Wrap(err, "could not sign `PingRequest`")
+	}
+
+	return &v2Ping{req: req}, nil
+}
+
+func (v *v2Ping) Call(ctx context.Context, conn *grpc.ClientConn) error {
+	if cli, err := netmap.NewClient(netmap.WithGlobalOpts(client.WithGRPCConn(conn))); err != nil {
+		return err
+	} else if _, err := cli.LocalNodeInfo(ctx, v.req); err != nil {
+		return err
+	}
+
+	return nil
+}

api/response.go

@@ -122,6 +122,8 @@ func WriteErrorResponse(ctx context.Context, w http.ResponseWriter, err error, r
 	code := http.StatusBadRequest
 
 	if e, ok := err.(Error); ok {
+		code = e.HTTPStatusCode
+
 		switch e.Code {
 		case "SlowDown", "XNeoFSServerNotInitialized", "XNeoFSReadQuorum", "XNeoFSWriteQuorum":
 			// Set retry-after header to indicate user-agents to retry request after 120secs.
@@ -191,17 +193,22 @@ func EncodeResponse(response interface{}) []byte {
 
 // EncodeToResponse encodes the response into ResponseWriter.
 func EncodeToResponse(w http.ResponseWriter, response interface{}) error {
+	w.WriteHeader(http.StatusOK)
+
 	if _, err := w.Write(xmlHeader); err != nil {
 		return err
+	} else if err = xml.NewEncoder(w).Encode(response); err != nil {
+		return err
 	}
-	return xml.NewEncoder(w).Encode(response)
+
+	return nil
 }
 
-// WriteSuccessResponseXML writes success headers and response if any,
+// // WriteSuccessResponseXML writes success headers and response if any,
-// with content-type set to `application/xml`.
+// // with content-type set to `application/xml`.
-func WriteSuccessResponseXML(w http.ResponseWriter, response []byte) {
+// func WriteSuccessResponseXML(w http.ResponseWriter, response []byte) {
-	WriteResponse(w, http.StatusOK, response, MimeXML)
+// 	WriteResponse(w, http.StatusOK, response, MimeXML)
-}
+// }
 
 func WriteSuccessResponseHeadersOnly(w http.ResponseWriter) {
 	WriteResponse(w, http.StatusOK, nil, MimeNone)

api/router.go

@@ -137,7 +137,13 @@ func logErrorResponse(l *zap.Logger) mux.MiddlewareFunc {
 			if lw.statusCode >= http.StatusMultipleChoices {
 				l.Error("something went wrong",
 					zap.Int("status", lw.statusCode),
-					zap.String("method", mux.CurrentRoute(r).GetName()))
+					zap.String("method", mux.CurrentRoute(r).GetName()),
+					zap.String("description", http.StatusText(lw.statusCode)))
+			} else {
+				l.Info("call method",
+					zap.Int("status", lw.statusCode),
+					zap.String("method", mux.CurrentRoute(r).GetName()),
+					zap.String("description", http.StatusText(lw.statusCode)))
 			}
 		})
 	}
@@ -162,7 +168,7 @@ func Attach(r *mux.Router, m MaxClients, h Handler, center *auth.Center, log *za
 		setRequestID,
 
 		// -- logging error requests
-		// logErrorResponse(log),
+		logErrorResponse(log),
 	)
 
 	// Attach user authentication for all S3 routes.

auth/bearer-token.go

@@ -3,7 +3,7 @@ package auth
 import (
 	"context"
 
-	"github.com/nspcc-dev/neofs-api-go/service"
+	"github.com/nspcc-dev/neofs-api-go/pkg/token"
 	"github.com/pkg/errors"
 )
 
@@ -12,12 +12,12 @@ type contextKey string
 const bearerTokenContextKey contextKey = "bearer-token"
 
 // GetBearerToken returns a bearer token embedded into a context or error, if any.
-func GetBearerToken(ctx context.Context) (*service.BearerTokenMsg, error) {
+func GetBearerToken(ctx context.Context) (*token.BearerToken, error) {
 	bt := ctx.Value(bearerTokenContextKey)
 	if bt == nil {
 		return nil, errors.New("got nil bearer token")
 	}
-	v, ok := bt.(*service.BearerTokenMsg)
+	v, ok := bt.(*token.BearerToken)
 	if !ok {
 		return nil, errors.Errorf("extracted unexpected type other than bearer token's: %T", v)
 	}
@@ -25,6 +25,6 @@ func GetBearerToken(ctx context.Context) (*service.BearerTokenMsg, error) {
 }
 
 // SetBearerToken return a context with embedded bearer token.
-func SetBearerToken(ctx context.Context, bearerToken *service.BearerTokenMsg) context.Context {
+func SetBearerToken(ctx context.Context, bearerToken *token.BearerToken) context.Context {
 	return context.WithValue(ctx, bearerTokenContextKey, bearerToken)
 }

auth/center.go

@@ -11,71 +11,56 @@ import (
 	"strings"
 	"time"
 
-	aws_credentials "github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/aws/aws-sdk-go/aws/credentials"
 	v4 "github.com/aws/aws-sdk-go/aws/signer/v4"
-	"github.com/nspcc-dev/neofs-api-go/refs"
+	"github.com/nspcc-dev/neofs-api-go/pkg/token"
-	"github.com/nspcc-dev/neofs-api-go/service"
 	"github.com/nspcc-dev/neofs-authmate/accessbox/hcs"
-	"github.com/nspcc-dev/neofs-authmate/credentials"
+	"github.com/nspcc-dev/neofs-authmate/agents/s3"
-	"github.com/nspcc-dev/neofs-authmate/gates"
+	manager "github.com/nspcc-dev/neofs-authmate/manager/neofs"
-	manager "github.com/nspcc-dev/neofs-authmate/neofsmanager"
 	"github.com/pkg/errors"
 	"go.uber.org/zap"
 )
 
 var authorizationFieldRegexp = regexp.MustCompile(`AWS4-HMAC-SHA256 Credential=(?P<access_key_id_cid>[^/]+)/(?P<access_key_id_oid>[^/]+)/(?P<date>[^/]+)/(?P<region>[^/]*)/(?P<service>[^/]+)/aws4_request,\s*SignedHeaders=(?P<signed_header_fields>.+),\s*Signature=(?P<v4_signature>.+)`)
 
-const emptyStringSHA256 = `e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855`
+type (
+	Center struct {
+		man *manager.Manager
+		reg *regexpSubmatcher
 
-// Center is a central app's authentication/authorization management unit.
+		keys *hcs.X25519Keys
-type Center struct {
+	}
-	log              *zap.Logger
+
-	submatcher       *regexpSubmatcher
+	Params struct {
-	neofsCredentials *credentials.Credentials
+		Timeout time.Duration
-	manager          *manager.Manager
+
-	authKeys         *hcs.X25519Keys
+		Log *zap.Logger
-}
+		Con manager.Connector
+
+		GAKey *hcs.X25519Keys
+		NFKey *ecdsa.PrivateKey
+	}
+)
+
+// New creates an instance of AuthCenter.
+func New(ctx context.Context, p *Params) (*Center, error) {
+	m, err := manager.New(ctx,
+		manager.WithKey(p.NFKey),
+		manager.WithLogger(p.Log),
+		manager.WithConnector(p.Con))
 
-// NewCenter creates an instance of AuthCenter.
-func NewCenter(log *zap.Logger, neofsNodeAddress string) (*Center, error) {
-	m, err := manager.NewManager(neofsNodeAddress)
 	if err != nil {
 		return nil, err
 	}
 	return &Center{
-		log:        log,
+		man: m,
-		submatcher: &regexpSubmatcher{re: authorizationFieldRegexp},
+		reg: &regexpSubmatcher{re: authorizationFieldRegexp},
-		manager:    m,
+
+		keys: p.GAKey,
 	}, nil
 }
 
-func (center *Center) SetNeoFSKeys(key *ecdsa.PrivateKey) error {
+func (center *Center) AuthenticationPassed(request *http.Request) (*token.BearerToken, error) {
-	creds, err := credentials.NewFromKey(key)
-	if err != nil {
-		return err
-	}
-	center.neofsCredentials = creds
-	return nil
-}
-
-func (center *Center) GetNeoFSPrivateKey() *ecdsa.PrivateKey {
-	return center.neofsCredentials.Key()
-}
-
-func (center *Center) GetOwnerID() refs.OwnerID {
-	return center.neofsCredentials.OwnerID()
-}
-
-func (center *Center) SetAuthKeys(key hcs.X25519PrivateKey) error {
-	keys, err := hcs.NewKeys(key)
-	if err != nil {
-		return err
-	}
-	center.authKeys = keys
-	return nil
-}
-
-func (center *Center) AuthenticationPassed(request *http.Request) (*service.BearerTokenMsg, error) {
 	queryValues := request.URL.Query()
 	if queryValues.Get("X-Amz-Algorithm") == "AWS4-HMAC-SHA256" {
 		return nil, errors.New("pre-signed form of request is not supported")
@@ -84,7 +69,7 @@ func (center *Center) AuthenticationPassed(request *http.Request) (*service.Bear
 	if len(authHeaderField) != 1 {
 		return nil, errors.New("unsupported request: wrong length of Authorization header field")
 	}
-	sms1 := center.submatcher.getSubmatches(authHeaderField[0])
+	sms1 := center.reg.getSubmatches(authHeaderField[0])
 	if len(sms1) != 7 {
 		return nil, errors.New("bad Authorization header field")
 	}
@@ -97,7 +82,7 @@ func (center *Center) AuthenticationPassed(request *http.Request) (*service.Bear
 		return nil, errors.Wrap(err, "failed to parse x-amz-date header field")
 	}
 	accessKeyID := fmt.Sprintf("%s/%s", sms1["access_key_id_cid"], sms1["access_key_id_oid"])
-	bearerToken, secretAccessKey, err := center.fetchBearerToken(accessKeyID)
+	res, err := s3.NewAgent(center.man).ObtainSecret(request.Context(), center.keys, accessKeyID)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to fetch bearer token")
 	}
@@ -110,7 +95,7 @@ func (center *Center) AuthenticationPassed(request *http.Request) (*service.Bear
 			}
 		}
 	}
-	awsCreds := aws_credentials.NewStaticCredentials(accessKeyID, secretAccessKey, "")
+	awsCreds := credentials.NewStaticCredentials(accessKeyID, res.SecretAccessKey, "")
 	signer := v4.NewSigner(awsCreds)
 	body, err := readAndKeepBody(request)
 	if err != nil {
@@ -120,31 +105,11 @@ func (center *Center) AuthenticationPassed(request *http.Request) (*service.Bear
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to sign temporary HTTP request")
 	}
-	sms2 := center.submatcher.getSubmatches(otherRequest.Header.Get("Authorization"))
+	sms2 := center.reg.getSubmatches(otherRequest.Header.Get("Authorization"))
 	if sms1["v4_signature"] != sms2["v4_signature"] {
 		return nil, errors.Wrap(err, "failed to pass authentication procedure")
 	}
-	return bearerToken, nil
+	return res.BearerToken, nil
-}
-
-func (center *Center) fetchBearerToken(accessKeyID string) (*service.BearerTokenMsg, string, error) {
-	akid := new(refs.Address)
-	if err := akid.Parse(accessKeyID); err != nil {
-		return nil, "", errors.Wrap(err, "failed to parse access key id as refs.Address")
-	}
-	config := &gates.ObtainingConfig{
-		BaseConfig: gates.BaseConfig{
-			OperationalCredentials: center.neofsCredentials,
-			Manager:                center.manager,
-		},
-		GateKeys:      center.authKeys,
-		SecretAddress: akid,
-	}
-	res, err := gates.ObtainSecret(config)
-	if err != nil {
-		return nil, "", errors.Wrap(err, "failed to obtain secret")
-	}
-	return res.BearerToken, res.SecretAccessKey, nil
 }
 
 // TODO: Make this write into a smart buffer backed by a file on a fast drive.
@@ -160,7 +125,3 @@ func readAndKeepBody(request *http.Request) (*bytes.Reader, error) {
 	request.Body = ioutil.NopCloser(bytes.NewReader(payload))
 	return bytes.NewReader(payload), nil
 }
-
-func LoadGateAuthPrivateKey(path string) (hcs.X25519PrivateKey, error) {
-	return ioutil.ReadFile(path)
-}

auth/errors.go

@@ -1,17 +0,0 @@
-package auth
-
-import "fmt"
-
-const (
-	// Minimum length for MinIO access key.
-	accessKeyMinLen = 3
-
-	// Minimum length for MinIO secret key for both server and gateway mode.
-	secretKeyMinLen = 8
-)
-
-// Common errors generated for access and secret key validation.
-var (
-	ErrInvalidAccessKeyLength = fmt.Errorf("access key must be minimum %v or more characters long", accessKeyMinLen)
-	ErrInvalidSecretKeyLength = fmt.Errorf("secret key must be minimum %v or more characters long", secretKeyMinLen)
-)

cmd/gate/app-logger.go

@@ -3,11 +3,10 @@ package main
 import (
 	"strings"
 
-	"google.golang.org/grpc/grpclog"
-
 	"github.com/spf13/viper"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
+	"google.golang.org/grpc/grpclog"
 )
 
 type (

cmd/gate/app-settings.go

@@ -1,16 +1,20 @@
 package main
 
 import (
+	"context"
 	"crypto/ecdsa"
 	"crypto/elliptic"
 	"crypto/rand"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"os"
+	"sort"
 	"strconv"
 	"strings"
 	"time"
 
+	"github.com/nspcc-dev/neofs-authmate/accessbox/hcs"
 	crypto "github.com/nspcc-dev/neofs-crypto"
 	"github.com/nspcc-dev/neofs-s3-gate/api/pool"
 	"github.com/nspcc-dev/neofs-s3-gate/auth"
@@ -81,50 +85,75 @@ const ( // settings
 	cfgEnableProfiler = "pprof"
 	cfgListenAddress  = "listen_address"
 
+	// Peers
+	cfgPeers = "peers"
+
 	// Application
 	cfgApplicationName      = "app.name"
 	cfgApplicationVersion   = "app.version"
 	cfgApplicationBuildTime = "app.build_time"
+
+	// command line args
+	cmdHelp    = "help"
+	cmdVersion = "version"
 )
 
 type empty int
 
+var ignore = map[string]struct{}{
+	cfgApplicationName:      {},
+	cfgApplicationVersion:   {},
+	cfgApplicationBuildTime: {},
+
+	cfgPeers: {},
+
+	cmdHelp:    {},
+	cmdVersion: {},
+}
+
 func (empty) Read([]byte) (int, error) { return 0, io.EOF }
 
-func fetchAuthCenter(l *zap.Logger, v *viper.Viper, peers []pool.Peer) (*auth.Center, error) {
+func fetchGateAuthKeys(v *viper.Viper) (*hcs.X25519Keys, error) {
+	path := v.GetString(cfgGateAuthPrivateKey)
+
+	data, err := ioutil.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+
+	return hcs.NewKeys(data)
+}
+
+func fetchNeoFSKey(v *viper.Viper) (*ecdsa.PrivateKey, error) {
 	var (
 		err error
-		neofsPrivateKey *ecdsa.PrivateKey
+		key *ecdsa.PrivateKey
 	)
-	switch nfspk := v.GetString(cfgNeoFSPrivateKey); nfspk {
+
+	switch val := v.GetString(cfgNeoFSPrivateKey); val {
 	case generated:
-		neofsPrivateKey, err = ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+		key, err = ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
 		if err != nil {
 			return nil, errors.Wrap(err, "could not generate NeoFS private key")
 		}
 	default:
-		neofsPrivateKey, err = crypto.LoadPrivateKey(nfspk)
+		key, err = crypto.LoadPrivateKey(val)
 		if err != nil {
 			return nil, errors.Wrap(err, "could not load NeoFS private key")
 		}
 	}
-	gapk := v.GetString(cfgGateAuthPrivateKey)
+
-	gateAuthPrivateKey, err := auth.LoadGateAuthPrivateKey(gapk)
+	return key, nil
-	if err != nil {
+}
-		return nil, errors.Wrapf(err, "could not load gate auth private key %q", gapk)
+
-	}
+func fetchAuthCenter(ctx context.Context, p *authCenterParams) (*auth.Center, error) {
-	// NB: Maybe choose a peer more smarter.
+	return auth.New(ctx, &auth.Params{
-	center, err := auth.NewCenter(l, peers[0].Address)
+		Con:     p.Pool,
-	if err != nil {
+		Log:     p.Logger,
-		return nil, errors.Wrap(err, "failed to create auth center")
+		Timeout: p.Timeout,
-	}
+		GAKey:   p.GateAuthKeys,
-	if err = center.SetAuthKeys(gateAuthPrivateKey); err != nil {
+		NFKey:   p.NeoFSPrivateKey,
-		return nil, errors.Wrap(err, "failed to set gate auth keys")
+	})
-	}
-	if err = center.SetNeoFSKeys(neofsPrivateKey); err != nil {
-		return nil, errors.Wrap(err, "failed to set NeoFS keys")
-	}
-	return center, nil
 }
 
 func fetchPeers(l *zap.Logger, v *viper.Viper) []pool.Peer {
@@ -132,7 +161,7 @@ func fetchPeers(l *zap.Logger, v *viper.Viper) []pool.Peer {
 
 	for i := 0; ; i++ {
 
-		key := "peers." + strconv.Itoa(i) + "."
+		key := cfgPeers + "." + strconv.Itoa(i) + "."
 		address := v.GetString(key + "address")
 		weight := v.GetFloat64(key + "weight")
 
@@ -154,7 +183,7 @@ func newSettings() *viper.Viper {
 	v := viper.New()
 
 	v.AutomaticEnv()
-	v.SetEnvPrefix("S3")
+	v.SetEnvPrefix(misc.Prefix)
 	v.SetConfigType("yaml")
 	v.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
 
@@ -165,8 +194,8 @@ func newSettings() *viper.Viper {
 	flags.Bool(cfgEnableProfiler, false, "enable pprof")
 	flags.Bool(cfgEnableMetrics, false, "enable prometheus metrics")
 
-	help := flags.BoolP("help", "h", false, "show help")
+	help := flags.BoolP(cmdHelp, "h", false, "show help")
-	version := flags.BoolP("version", "v", false, "show version")
+	version := flags.BoolP(cmdVersion, "v", false, "show version")
 
 	flags.String(cfgNeoFSPrivateKey, generated, fmt.Sprintf(`set value to hex string, WIF string, or path to NeoFS private key file (use "%s" to generate key)`, generated))
 	flags.String(cfgGateAuthPrivateKey, "", "set path to file with auth (curve25519) private key to use in auth scheme")
@@ -182,7 +211,7 @@ func newSettings() *viper.Viper {
 	ttl := flags.DurationP(cfgConnectionTTL, "t", defaultTTL, "set gRPC connection time to live")
 
 	flags.String(cfgListenAddress, "0.0.0.0:8080", "set address to listen")
-	peers := flags.StringArrayP("peers", "p", nil, "set NeoFS nodes")
+	peers := flags.StringArrayP(cfgPeers, "p", nil, "set NeoFS nodes")
 
 	// set prefers:
 	v.Set(cfgApplicationName, misc.ApplicationName)
@@ -217,10 +246,40 @@ func newSettings() *viper.Viper {
 		panic(err)
 	}
 
+	if peers != nil && len(*peers) > 0 {
+		for i := range *peers {
+			v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".address", (*peers)[i])
+			v.SetDefault(cfgPeers+"."+strconv.Itoa(i)+".weight", 1)
+		}
+	}
+
 	switch {
 	case help != nil && *help:
 		fmt.Printf("NeoFS S3 Gateway %s (%s)\n", misc.Version, misc.Build)
 		flags.PrintDefaults()
+
+		fmt.Println()
+		fmt.Println("Default environments:")
+		fmt.Println()
+		keys := v.AllKeys()
+		sort.Strings(keys)
+
+		for i := range keys {
+			if _, ok := ignore[keys[i]]; ok {
+				continue
+			}
+
+			k := strings.Replace(keys[i], ".", "_", -1)
+			fmt.Printf("%s_%s = %v\n", misc.Prefix, strings.ToUpper(k), v.Get(keys[i]))
+		}
+
+		fmt.Println()
+		fmt.Println("Peers preset:")
+		fmt.Println()
+
+		fmt.Printf("%s_%s_[N]_ADDRESS = string\n", misc.Prefix, strings.ToUpper(cfgPeers))
+		fmt.Printf("%s_%s_[N]_WEIGHT = 0..1 (float)\n", misc.Prefix, strings.ToUpper(cfgPeers))
+
 		os.Exit(0)
 	case version != nil && *version:
 		fmt.Printf("NeoFS S3 Gateway %s (%s)\n", misc.Version, misc.Build)
@@ -229,12 +288,5 @@ func newSettings() *viper.Viper {
 		fmt.Printf("connection ttl should not be less than %s", defaultTTL)
 	}
 
-	if peers != nil && len(*peers) > 0 {
-		for i := range *peers {
-			v.SetDefault("peers."+strconv.Itoa(i)+".address", (*peers)[i])
-			v.SetDefault("peers."+strconv.Itoa(i)+".weight", 1)
-		}
-	}
-
 	return v
 }

cmd/gate/app.go

@@ -3,10 +3,13 @@ package main
 import (
 	"context"
 	"crypto/ecdsa"
+	"errors"
 	"net"
 	"net/http"
+	"os"
 	"time"
 
+	"github.com/nspcc-dev/neofs-authmate/accessbox/hcs"
 	"github.com/nspcc-dev/neofs-s3-gate/api"
 	"github.com/nspcc-dev/neofs-s3-gate/api/handler"
 	"github.com/nspcc-dev/neofs-s3-gate/api/layer"
@@ -19,8 +22,8 @@ import (
 
 type (
 	App struct {
-		center *auth.Center
 		cli pool.Pool
+		ctr *auth.Center
 		log *zap.Logger
 		cfg *viper.Viper
 		tls *tlsConfig
@@ -44,14 +47,18 @@ type (
 	}
 )
 
-func newApp(l *zap.Logger, v *viper.Viper) *App {
+func newApp(ctx context.Context, l *zap.Logger, v *viper.Viper) *App {
 	var (
 		err    error
 		cli    pool.Pool
 		tls    *tlsConfig
 		caller api.Handler
+		ctr    *auth.Center
 		obj    layer.Client
-		key        *ecdsa.PrivateKey
+
+		gaKey *hcs.X25519Keys
+		nfKey *ecdsa.PrivateKey
+
 		reBalance  = defaultRebalanceTimer
 		conTimeout = defaultConnectTimeout
 		reqTimeout = defaultRequestTimeout
@@ -59,19 +66,6 @@ func newApp(l *zap.Logger, v *viper.Viper) *App {
 		maxClientsCount    = defaultMaxClientsCount
 		maxClientsDeadline = defaultMaxClientsDeadline
 	)
-	peers := fetchPeers(l, v)
-	center, err := fetchAuthCenter(l, v, peers)
-	if err != nil {
-		l.Fatal("failed to initialize auth center", zap.Error(err))
-	}
-	key = center.GetNeoFSPrivateKey()
-
-	if v.IsSet(cfgTLSKeyFile) && v.IsSet(cfgTLSCertFile) {
-		tls = &tlsConfig{
-			KeyFile:  v.GetString(cfgTLSKeyFile),
-			CertFile: v.GetString(cfgTLSCertFile),
-		}
-	}
 
 	if v := v.GetDuration(cfgConnectTimeout); v > 0 {
 		conTimeout = v
@@ -89,15 +83,36 @@ func newApp(l *zap.Logger, v *viper.Viper) *App {
 		maxClientsDeadline = v
 	}
 
+	if v := v.GetDuration(cfgRebalanceTimer); v > 0 {
+		reBalance = v
+	}
+
+	if nfKey, err = fetchNeoFSKey(v); err != nil {
+		l.Fatal("could not load NeoFS private key")
+	}
+
+	if gaKey, err = fetchGateAuthKeys(v); err != nil {
+		l.Fatal("could not load gate auth key")
+	}
+
+	if v.IsSet(cfgTLSKeyFile) && v.IsSet(cfgTLSCertFile) {
+		tls = &tlsConfig{
+			KeyFile:  v.GetString(cfgTLSKeyFile),
+			CertFile: v.GetString(cfgTLSCertFile),
+		}
+	}
+
+	peers := fetchPeers(l, v)
+
 	poolConfig := &pool.Config{
+		ConnectTimeout: conTimeout,
+		RequestTimeout: reqTimeout,
 		ConnectionTTL:  v.GetDuration(cfgConnectionTTL),
-		ConnectTimeout: v.GetDuration(cfgConnectTimeout),
-		RequestTimeout: v.GetDuration(cfgRequestTimeout),
 
 		Peers: peers,
 
 		Logger:     l,
-		PrivateKey: key,
+		PrivateKey: nfKey,
 
 		GRPCLogger:  gRPCLogger(l),
 		GRPCVerbose: v.GetBool(cfgGRPCVerbose),
@@ -105,27 +120,54 @@ func newApp(l *zap.Logger, v *viper.Viper) *App {
 		ClientParameters: keepalive.ClientParameters{},
 	}
 
-	if v := v.GetDuration(cfgRebalanceTimer); v > 0 {
-		reBalance = v
-	}
-
 	if cli, err = pool.New(poolConfig); err != nil {
 		l.Fatal("could not prepare pool connections", zap.Error(err))
 	}
 
+	{ // prepare auth center
+		ctx, cancel := context.WithTimeout(ctx, conTimeout)
+		defer cancel()
+
+		params := &authCenterParams{
+			Logger: l,
+			Pool:   cli,
+
+			Timeout: conTimeout,
+
+			GateAuthKeys:    gaKey,
+			NeoFSPrivateKey: nfKey,
+		}
+
+		if ctr, err = fetchAuthCenter(ctx, params); err != nil {
+			l.Fatal("failed to initialize auth center", zap.Error(err))
+		}
+	}
+
 	{ // should establish connection with NeoFS Storage Nodes
-		ctx, cancel := context.WithTimeout(context.Background(), conTimeout)
+		ctx, cancel := context.WithTimeout(ctx, conTimeout)
 		defer cancel()
 
 		cli.ReBalance(ctx)
 
-		if _, err = cli.GetConnection(ctx); err != nil {
+		if _, err = cli.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))
 		}
 	}
 
-	if obj, err = layer.NewLayer(l, cli, key); err != nil {
+	layerParams := &layer.Params{
+		Pool:    cli,
+		Logger:  l,
+		Timeout: reqTimeout,
+		NFKey:   nfKey,
+	}
+
+	if obj, err = layer.NewLayer(layerParams); err != nil {
 		l.Fatal("could not prepare ObjectLayer", zap.Error(err))
 	}
 
@@ -134,7 +176,7 @@ func newApp(l *zap.Logger, v *viper.Viper) *App {
 	}
 
 	return &App{
-		center: center,
+		ctr: ctr,
 		cli: cli,
 		log: l,
 		cfg: v,
@@ -189,10 +231,11 @@ func (a *App) Server(ctx context.Context) {
 	attachProfiler(router, a.cfg, a.log)
 
 	// Attach S3 API:
-	api.Attach(router, a.maxClients, a.api, a.center, a.log)
+	api.Attach(router, a.maxClients, a.api, a.ctr, a.log)
 
 	// Use mux.Router as http.Handler
 	srv.Handler = router
+	srv.ErrorLog = zap.NewStdLog(a.log)
 
 	go func() {
 		a.log.Info("starting server",

cmd/gate/app_option.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"crypto/ecdsa"
+	"time"
+
+	"github.com/nspcc-dev/neofs-authmate/accessbox/hcs"
+	"github.com/nspcc-dev/neofs-s3-gate/api/pool"
+	"go.uber.org/zap"
+)
+
+type (
+	authCenterParams struct {
+		Pool    pool.Client
+		Logger  *zap.Logger
+		Timeout time.Duration
+
+		GateAuthKeys    *hcs.X25519Keys
+		NeoFSPrivateKey *ecdsa.PrivateKey
+	}
+)

cmd/gate/main.go

@@ -4,8 +4,8 @@ func main() {
 	var (
 		v = newSettings()
 		l = newLogger(v)
-		a = newApp(l, v)
 		g = newGracefulContext(l)
+		a = newApp(g, l, v)
 	)
 
 	go a.Server(g)

go.mod

@@ -3,16 +3,14 @@ module github.com/nspcc-dev/neofs-s3-gate
 go 1.14
 
 require (
-	github.com/awalterschulze/gographviz v2.0.1+incompatible // indirect
+	github.com/aws/aws-sdk-go v1.27.0
-	github.com/aws/aws-sdk-go v1.33.20
 	github.com/fsnotify/fsnotify v1.4.9 // indirect
-	github.com/google/uuid v1.1.1
+	github.com/google/uuid v1.1.2
 	github.com/gorilla/mux v1.7.4
 	github.com/mitchellh/mapstructure v1.3.3 // indirect
-	github.com/mr-tron/base58 v1.2.0 // indirect
+	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
-	github.com/nspcc-dev/hrw v1.0.9 // indirect
+	github.com/nspcc-dev/neofs-api-go v1.3.1-0.20201020152448-c8f46f7d9762
-	github.com/nspcc-dev/neofs-api-go v1.3.0
+	github.com/nspcc-dev/neofs-authmate v0.0.0
-	github.com/nspcc-dev/neofs-authmate v0.0.0-20200806174343-d3b2deb75d54
 	github.com/nspcc-dev/neofs-crypto v0.3.0
 	github.com/pelletier/go-toml v1.8.0 // indirect
 	github.com/pkg/errors v0.9.1
@@ -23,13 +21,22 @@ require (
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
 	github.com/spf13/pflag v1.0.5
 	github.com/spf13/viper v1.7.1
+	github.com/stretchr/testify v1.6.1
 	go.uber.org/atomic v1.6.0
-	go.uber.org/zap v1.15.0
+	go.uber.org/zap v1.16.0
-	golang.org/x/net v0.0.0-20200707034311-ab3426394381 // indirect
+	golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f // indirect
 	golang.org/x/sys v0.0.0-20200806125547-5acd03effb82 // indirect
 	golang.org/x/text v0.3.3 // indirect
+	golang.org/x/tools v0.0.0-20200925191224-5d1fdd8fa346 // indirect
 	google.golang.org/genproto v0.0.0-20200806141610-86f49bd18e98 // indirect
-	google.golang.org/grpc v1.31.0
+	google.golang.org/grpc v1.33.0
 	google.golang.org/protobuf v1.25.0 // indirect
+	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
 	gopkg.in/ini.v1 v1.57.0 // indirect
 )
+
+// temporary
+replace (
+	github.com/nspcc-dev/neofs-api-go => ../neofs-api
+	github.com/nspcc-dev/neofs-authmate => ../neofs-authmate
+)

go.sum

@@ -18,15 +18,18 @@ github.com/CityOfZion/neo-go v0.62.1-pre.0.20191114145240-e740fbe708f8/go.mod h1
 github.com/CityOfZion/neo-go v0.70.1-pre.0.20191209120015-fccb0085941e/go.mod h1:0enZl0az8xA6PVkwzEOwPWVJGqlt/GO4hA4kmQ5Xzig=
 github.com/CityOfZion/neo-go v0.70.1-pre.0.20191212173117-32ac01130d4c/go.mod h1:JtlHfeqLywZLswKIKFnAp+yzezY4Dji9qlfQKB2OD/I=
 github.com/CityOfZion/neo-go v0.71.1-pre.0.20200129171427-f773ec69fb84/go.mod h1:FLI526IrRWHmcsO+mHsCbj64pJZhwQFTLJZu+A4PGOA=
+github.com/DataDog/zstd v1.4.1 h1:3oxKN3wbHibqx897utPC2LTQU4J+IHWWJO+glkAkpFM=
 github.com/DataDog/zstd v1.4.1/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
 github.com/Knetic/govaluate v3.0.1-0.20171022003610-9aa49832a739+incompatible/go.mod h1:r7JcOSlj0wfOMncg0iLm8Leh48TZaKVeNIfJntJ2wa0=
 github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
 github.com/Shopify/toxiproxy v2.1.4+incompatible/go.mod h1:OXgGpZ6Cli1/URJOF1DMxUHB2q5Ap20/P/eIdh4G0pI=
 github.com/VividCortex/gohistogram v1.0.0/go.mod h1:Pf5mBqqDxYaXu3hDrrU+w6nw50o/4+TcAqDqk/vUH7g=
+github.com/Workiva/go-datastructures v1.0.50 h1:slDmfW6KCHcC7U+LP3DDBbm4fqTwZGn1beOFPfGaLvo=
 github.com/Workiva/go-datastructures v1.0.50/go.mod h1:Z+F2Rca0qCsVYDS8z7bAGm8f3UkzuWYS/oBZz5a7VVA=
 github.com/abiosoft/ishell v2.0.0+incompatible/go.mod h1:HQR9AqF2R3P4XXpMpI0NAzgHf/aS6+zVXRj14cVk9qg=
 github.com/abiosoft/readline v0.0.0-20180607040430-155bce2042db/go.mod h1:rB3B4rKii8V21ydCbIzH5hZiCQE7f5E9SzUb/ZZx530=
+github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
 github.com/afex/hystrix-go v0.0.0-20180502004556-fa1af6a1f4f5/go.mod h1:SkGFH1ia65gfNATL8TAiHDNxPzPdmEL5uirI2Uyuz6c=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
@@ -42,15 +45,9 @@ github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5
 github.com/armon/go-metrics v0.0.0-20180917152333-f0300d1749da/go.mod h1:Q73ZrmVTwzkszR9V5SSuryQ31EELlFMUz1kKyl939pY=
 github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310/go.mod h1:ufUuZ+zHj4x4TnLV4JWEpy2hxWSpsRywHrMgIH9cCH8=
 github.com/aryann/difflib v0.0.0-20170710044230-e206f873d14a/go.mod h1:DAHtR1m6lCRdSC2Tm3DSWRPvIPr6xNKyeHdqDQSQT+A=
-github.com/awalterschulze/gographviz v0.0.0-20181013152038-b2885df04310 h1:t+qxRrRtwNiUYA+Xh2jSXhoG2grnMCMKX4Fg6lx9X1U=
-github.com/awalterschulze/gographviz v0.0.0-20181013152038-b2885df04310/go.mod h1:GEV5wmg4YquNw7v1kkyoX9etIk8yVmXj+AkDHuuETHs=
-github.com/awalterschulze/gographviz v2.0.1+incompatible h1:XIECBRq9VPEQqkQL5pw2OtjCAdrtIgFKoJU8eT98AS8=
-github.com/awalterschulze/gographviz v2.0.1+incompatible/go.mod h1:GEV5wmg4YquNw7v1kkyoX9etIk8yVmXj+AkDHuuETHs=
 github.com/aws/aws-lambda-go v1.13.3/go.mod h1:4UKl9IzQMoD+QF79YdCuzCwp8VbmG4VAQwij/eHl5CU=
 github.com/aws/aws-sdk-go v1.27.0 h1:0xphMHGMLBrPMfxR2AmVjZKcMEESEgWF8Kru94BNByk=
 github.com/aws/aws-sdk-go v1.27.0/go.mod h1:KmX6BPdI08NWTb3/sm4ZGu5ShLoqVDhKgpiN924inxo=
-github.com/aws/aws-sdk-go v1.33.20 h1:mtXKHmMQO6o0i2GTjyiVNZGlXqJDCUbiik0OQeMds/o=
-github.com/aws/aws-sdk-go v1.33.20/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
 github.com/aws/aws-sdk-go-v2 v0.18.0/go.mod h1:JWVYvqSMppoMJC0x5wdwiImzgXTI9FuZwxzkQq9wy+g=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
@@ -58,6 +55,15 @@ github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs=
 github.com/bketelsen/crypt v0.0.3-0.20200106085610-5cbc8cc4026c/go.mod h1:MKsuJmJgSg28kpZDP6UIiPt0e0Oz0kqKNGyRaWEPv84=
+github.com/btcsuite/btcd v0.20.1-beta h1:Ik4hyJqN8Jfyv3S4AGBOmyouMsYE3EdYODkMbQjwPGw=
+github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
+github.com/btcsuite/btclog v0.0.0-20170628155309-84c8d2346e9f/go.mod h1:TdznJufoqS23FtqVCzL0ZqgP5MqXbb4fg/WgDys70nA=
+github.com/btcsuite/btcutil v0.0.0-20190425235716-9e5f4b9a998d/go.mod h1:+5NJ2+qvTyV9exUAL/rxXi3DcLg2Ts+ymUAY5y4NvMg=
+github.com/btcsuite/go-socks v0.0.0-20170105172521-4720035b7bfd/go.mod h1:HHNXQzUsZCxOoE+CPiyCTO6x34Zs86zZUiwtpXoGdtg=
+github.com/btcsuite/goleveldb v0.0.0-20160330041536-7834afc9e8cd/go.mod h1:F+uVaaLLH7j4eDXPRvw78tMflu7Ie2bzYOH4Y8rRKBY=
+github.com/btcsuite/snappy-go v0.0.0-20151229074030-0bdef8d06723/go.mod h1:8woku9dyThutzjeg+3xrA5iCpBRH8XEEg3lh6TiUghc=
+github.com/btcsuite/websocket v0.0.0-20150119174127-31079b680792/go.mod h1:ghJtEyQwv5/p4Mg4C0fgbePVuGr935/5ddU9Z3TmDRY=
+github.com/btcsuite/winsvc v1.0.0/go.mod h1:jsenWakMcC0zFBFurPLEAyrnc/teJEM1O46fmI40EZs=
 github.com/casbin/casbin/v2 v2.1.2/go.mod h1:YcPU1XXisHhLzuxH9coDNf2FbKpjGlbCg3n9yuLkIJQ=
 github.com/cenkalti/backoff v2.2.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM=
 github.com/census-instrumentation/opencensus-proto v0.2.1 h1:glEXhBS5PSLLv4IXzLA5yPRVX4bilULVyxxbrfOtDAk=
@@ -89,19 +95,26 @@ github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7
 github.com/coreos/pkg v0.0.0-20160727233714-3ac0863d7acf/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
 github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f h1:lBNOc5arjvs8E5mO2tbpBpLoyyu8B6e44T7hJy6potg=
 github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
+github.com/cpuguy83/go-md2man v1.0.10 h1:BSKMNlYxDvnunlTymqtgONjNnaRV1sTpcovwwjF22jk=
 github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
+github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
 github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
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@@ -185,6 +199,8 @@ github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm4
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@@ -239,17 +255,16 @@ github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpO
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@@ -400,8 +400,6 @@ github.com/prometheus/client_golang v0.9.3/go.mod h1:/TN21ttK/J9q6uSwhBd54HahCDf
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@@ -416,8 +414,6 @@ github.com/prometheus/common v0.2.0/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y8
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@@ -427,22 +423,24 @@ github.com/prometheus/procfs v0.0.0-20190507164030-5867b95ac084/go.mod h1:TjEm7z
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@@ -474,8 +472,6 @@ github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnIn
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@@ -486,28 +482,31 @@ github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
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@@ -529,8 +528,9 @@ go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee h1:0mgffUl7nfd+FpvXMVz4IDEa
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@@ -540,9 +540,10 @@ golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8U
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 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -558,11 +559,15 @@ golang.org/x/lint v0.0.0-20190409202823-959b441ac422/go.mod h1:6SW0HCj/g11FgYtHl
 golang.org/x/lint v0.0.0-20190909230951-414d861bb4ac/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/lint v0.0.0-20190930215403-16217165b5de h1:5hukYrvBGR8/eNkX5mdUezrA6JiaEZDtJb9Ei+1LlBs=
 golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
+golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f h1:J5lckAjkw6qYlOZNj90mLYNTEKDvWeuc1yieZ8qUzUE=
+golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f/go.mod h1:5qLYkcX4OjUUV8bRuDixDT3tpyyb+LUpUlRWLxfhWrs=
 golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
 golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod h1:E/iHnbuqvinMTCcRqshq8CkpyQDoeVncDDYHnLhea+o=
 golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
 golang.org/x/mod v0.1.0/go.mod h1:0QHyrYULN0/3qlju5TqG8bIK38QM8yzMo5ekMj3DlcY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
+golang.org/x/mod v0.3.0 h1:RM4zey1++hCTbCVQfnWeKs9/IEsaBLA8vTkd0WVtmH4=
+golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -572,7 +577,6 @@ golang.org/x/net v0.0.0-20181201002055-351d144fa1fc/go.mod h1:mL1N/T3taQHkDXs73r
 golang.org/x/net v0.0.0-20181220203305-927f97764cc3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190125091013-d26f9f9a57f3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190206173232-65e2d4e15006/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
@@ -582,10 +586,9 @@ golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190813141303-74dc4d7220e7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
-golang.org/x/net v0.0.0-20200707034311-ab3426394381 h1:VXak5I6aEWmAXeQjA+QSZzlgNrpq9mjcfDemuexIKsU=
+golang.org/x/net v0.0.0-20200822124328-c89045814202 h1:VvcQYSHwXgi7W+TpUR6A9g6Up98WAHf3f/ulnJ62IyA=
-golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
+golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
@@ -596,6 +599,7 @@ golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e h1:vcxGaoTs7kV8m5Np9uUNQin4BrLOthgV7252N8V+FwY=
 golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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 golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -605,7 +609,6 @@ golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181122145206-62eef0e2fa9b/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181205085412-a5c9d58dba9a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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 golang.org/x/sys v0.0.0-20190204203706-41f3e6584952/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -625,7 +628,6 @@ golang.org/x/sys v0.0.0-20191008105621-543471e840be/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20191010194322-b09406accb47/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191220142924-d4481acd189f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200113162924-86b910548bc1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200420163511-1957bb5e6d1f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -649,7 +651,6 @@ golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGm
 golang.org/x/tools v0.0.0-20180318012157-96caea41033d/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20181030221726-6c7e314b6563/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
 golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
@@ -669,12 +670,18 @@ golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191112195655-aa38f8e97acc h1:NCy3Ohtk6Iny5V/reW2Ktypo4zIpWBdRJ1uFMjBxdg8=
 golang.org/x/tools v0.0.0-20191112195655-aa38f8e97acc/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
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 golang.org/x/tools v0.0.0-20200103221440-774c71fcf114 h1:DnSr2mCsxyCE6ZgIkmcWUQY2R5cH/6wL7eIxEmQOMSE=
 golang.org/x/tools v0.0.0-20200103221440-774c71fcf114/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
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 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
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 google.golang.org/api v0.3.1/go.mod h1:6wY9I6uQWHQ8EM57III9mq/AjF+i8G65rmVagqKMtkk=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
@@ -715,10 +722,8 @@ google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
 google.golang.org/grpc v1.29.1 h1:EC2SB8S04d2r73uptxphDSUG+kTKVgjRPF+N3xpxRB4=
 google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk=
-google.golang.org/grpc v1.30.0 h1:M5a8xTlYTxwMn5ZFkwhRabsygDY5G8TYLyQDBxJNAxE=
+google.golang.org/grpc v1.33.0 h1:IBKSUNL2uBS2DkJBncPP+TwT0sp9tgA8A75NjHt6umg=
-google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/grpc v1.33.0/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
-google.golang.org/grpc v1.31.0 h1:T7P4R73V3SSDPhH7WW7ATbfViLtmamH0DKrP3f9AuDI=
-google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -737,6 +742,8 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f h1:BLraFXnmrev5lT+xlilqcH8XK9/i0At2xKjWk4p6zsU=
+gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
@@ -756,6 +763,8 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

misc/build.go

@@ -1,6 +1,10 @@
 package misc
 
-const ApplicationName = "neofs-s3-gate"
+const (
+	Prefix = "S3"
+
+	ApplicationName = "neofs-s3-gate"
+)
 
 var (
 	Build   = "now"