[#166] Fix getting s3 object with the FrostFS OID name

Prioritize getting s3 object with the key, which equals to valid FrostFS OID, rather than getting non-existent object with OID via native protocol for GET and HEAD requests

Signed-off-by: Nikita Zinkevich <n.zinkevich@yadro.com>

cmd/http-gw/app.go

@@ -499,10 +499,10 @@ func (a *app) Serve() {
 		close(a.webDone)
 	}()
 
-	handler := handler.New(a.AppParams(), a.settings, tree.NewTree(frostfs.NewPoolWrapper(a.treePool)), workerPool)
+	handle := handler.New(a.AppParams(), a.settings, tree.NewTree(frostfs.NewPoolWrapper(a.treePool)), workerPool)
 
 	// Configure router.
-	a.configureRouter(handler)
+	a.configureRouter(handle)
 
 	a.startServices()
 	a.initServers(a.ctx)

internal/api/layer/tree_service.go

@@ -1,22 +0,0 @@
-package layer
-
-import (
-	"context"
-	"errors"
-
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/api"
-	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
-)
-
-// TreeService provide interface to interact with tree service using s3 data models.
-type TreeService interface {
-	GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*api.NodeVersion, error)
-}
-
-var (
-	// ErrNodeNotFound is returned from Tree service in case of not found error.
-	ErrNodeNotFound = errors.New("not found")
-
-	// ErrNodeAccessDenied is returned from Tree service in case of access denied error.
-	ErrNodeAccessDenied = errors.New("access denied")
-)

internal/data/tree.go

@@ -1,4 +1,4 @@
-package api
+package data
 
 import (
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
@@ -7,12 +7,13 @@ import (
 // NodeVersion represent node from tree service.
 type NodeVersion struct {
 	BaseNodeVersion
-	DeleteMarker bool
+	IsUnversioned bool
-	IsPrefixNode bool
 }
 
 // BaseNodeVersion is minimal node info from tree service.
 // Basically used for "system" object.
 type BaseNodeVersion struct {
-	OID oid.ID
+	ID             uint64
+	OID            oid.ID
+	IsDeleteMarker bool
 }

internal/handler/download.go

@@ -4,6 +4,7 @@ import (
 	"archive/zip"
 	"bufio"
 	"context"
+	"errors"
 	"fmt"
 	"io"
 	"net/http"
@@ -17,27 +18,53 @@ import (
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/zap"
 )
 
 // DownloadByAddressOrBucketName handles download requests using simple cid/oid or bucketname/key format.
 func (h *Handler) DownloadByAddressOrBucketName(c *fasthttp.RequestCtx) {
-	oidURLParam := c.UserValue("oid").(string)
+	cidParam := c.UserValue("cid").(string)
-	downloadQueryParam := c.QueryArgs().GetBool("download")
+	oidParam := c.UserValue("oid").(string)
+	downloadParam := c.QueryArgs().GetBool("download")
 
-	switch {
+	ctx := utils.GetContextFromRequest(c)
-	case isObjectID(oidURLParam):
+	log := utils.GetReqLogOrDefault(ctx, h.log).With(
-		h.byNativeAddress(c, h.receiveFile)
+		zap.String("cid", cidParam),
-	case !isContainerRoot(oidURLParam) && (downloadQueryParam || !isDir(oidURLParam)):
+		zap.String("oid", oidParam),
-		h.byS3Path(c, h.receiveFile)
+	)
-	default:
+
-		h.browseIndex(c)
+	bktInfo, err := h.getBucketInfo(ctx, cidParam, log)
+	if err != nil {
+		logAndSendBucketError(c, log, err)
+		return
+	}
+
+	checkS3Err := h.tree.CheckSettingsNodeExists(ctx, bktInfo)
+	if checkS3Err != nil && !errors.Is(checkS3Err, tree.ErrNodeNotFound) {
+		logAndSendBucketError(c, log, checkS3Err)
+		return
+	}
+
+	req := h.newRequest(c, log)
+
+	var objID oid.ID
+	if checkS3Err == nil && shouldDownload(oidParam, downloadParam) {
+		h.byS3Path(ctx, req, bktInfo.CID, oidParam, h.receiveFile)
+	} else if err = objID.DecodeString(oidParam); err == nil {
+		h.byNativeAddress(ctx, req, bktInfo.CID, objID, h.receiveFile)
+	} else {
+		h.browseIndex(c, checkS3Err != nil)
 	}
 }
 
-func (h *Handler) newRequest(ctx *fasthttp.RequestCtx, log *zap.Logger) *request {
+func shouldDownload(oidParam string, downloadParam bool) bool {
-	return &request{
+	return !isDir(oidParam) || downloadParam
+}
+
+func (h *Handler) newRequest(ctx *fasthttp.RequestCtx, log *zap.Logger) request {
+	return request{
 		RequestCtx: ctx,
 		log:        log,
 	}

internal/handler/handler.go

@@ -6,14 +6,13 @@ import (
 	"fmt"
 	"io"
 	"net/url"
-	"strings"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/cache"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/handler/middleware"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/layer"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/logs"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/response"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tree"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
 	apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
@@ -21,6 +20,7 @@ import (
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"github.com/panjf2000/ants/v2"
 	"github.com/valyala/fasthttp"
@@ -164,7 +164,7 @@ type Handler struct {
 	ownerID           *user.ID
 	config            Config
 	containerResolver ContainerResolver
-	tree              *tree.Tree
+	tree              layer.TreeService
 	cache             *cache.BucketCache
 	workerPool        *ants.Pool
 }
@@ -177,7 +177,7 @@ type AppParams struct {
 	Cache    *cache.BucketCache
 }
 
-func New(params *AppParams, config Config, tree *tree.Tree, workerPool *ants.Pool) *Handler {
+func New(params *AppParams, config Config, tree layer.TreeService, workerPool *ants.Pool) *Handler {
 	return &Handler{
 		log:               params.Logger,
 		frostfs:           params.FrostFS,
@@ -190,79 +190,45 @@ func New(params *AppParams, config Config, tree *tree.Tree, workerPool *ants.Poo
 	}
 }
 
-// byNativeAddress is a wrapper for function (e.g. request.headObject, request.receiveFile) that
+// resolveContainer decode container id, if it's not a valid container id
-// prepares request and object address to it.
+// then trey to resolve name using provided resolver.
-func (h *Handler) byNativeAddress(c *fasthttp.RequestCtx, f func(context.Context, request, oid.Address)) {
+func (h *Handler) resolveContainer(ctx context.Context, containerID string) (*cid.ID, error) {
-	idCnr, _ := c.UserValue("cid").(string)
+	cnrID := new(cid.ID)
-	idObj, _ := url.PathUnescape(c.UserValue("oid").(string))
+	err := cnrID.DecodeString(containerID)
-
-	ctx := utils.GetContextFromRequest(c)
-	reqLog := utils.GetReqLogOrDefault(ctx, h.log)
-	log := reqLog.With(zap.String("cid", idCnr), zap.String("oid", idObj))
-
-	bktInfo, err := h.getBucketInfo(ctx, idCnr, log)
 	if err != nil {
-		logAndSendBucketError(c, log, err)
+		cnrID, err = h.containerResolver.Resolve(ctx, containerID)
-		return
+		if err != nil && !errors.Is(err, tree.ErrNodeNotFound) {
+			err = fmt.Errorf("%w: %s", new(apistatus.ContainerNotFound), err.Error())
+		}
 	}
-
+	return cnrID, err
-	objID := new(oid.ID)
-	if err = objID.DecodeString(idObj); err != nil {
-		log.Error(logs.WrongObjectID, zap.Error(err))
-		response.Error(c, "wrong object id", fasthttp.StatusBadRequest)
-		return
-	}
-
-	addr := newAddress(bktInfo.CID, *objID)
-
-	f(ctx, *h.newRequest(c, log), addr)
 }
 
-// byS3Path is a wrapper for function (e.g. request.headObject, request.receiveFile) that
+func (h *Handler) byS3Path(ctx context.Context, req request, cnrID cid.ID, path string, handler func(context.Context, request, oid.Address)) {
-// resolves object address from S3-like path <bucket name>/<object key>.
+	c, log := req.RequestCtx, req.log
-func (h *Handler) byS3Path(c *fasthttp.RequestCtx, f func(context.Context, request, oid.Address)) {
-	bucketname := c.UserValue("cid").(string)
-	key := c.UserValue("oid").(string)
 
-	ctx := utils.GetContextFromRequest(c)
+	foundOID, err := h.tree.GetLatestVersion(ctx, &cnrID, path)
-	reqLog := utils.GetReqLogOrDefault(ctx, h.log)
-	log := reqLog.With(zap.String("bucketname", bucketname), zap.String("key", key))
-
-	unescapedKey, err := url.QueryUnescape(key)
 	if err != nil {
 		logAndSendBucketError(c, log, err)
 		return
 	}
-
+	if foundOID.IsDeleteMarker {
-	bktInfo, err := h.getBucketInfo(ctx, bucketname, log)
-	if err != nil {
-		logAndSendBucketError(c, log, err)
-		return
-	}
-
-	foundOid, err := h.tree.GetLatestVersion(ctx, &bktInfo.CID, unescapedKey)
-	if err != nil {
-		if errors.Is(err, tree.ErrNodeAccessDenied) {
-			response.Error(c, "Access Denied", fasthttp.StatusForbidden)
-		} else {
-			response.Error(c, "object wasn't found", fasthttp.StatusNotFound)
-			log.Error(logs.GetLatestObjectVersion, zap.Error(err))
-		}
-		return
-	}
-	if foundOid.DeleteMarker {
 		log.Error(logs.ObjectWasDeleted)
 		response.Error(c, "object deleted", fasthttp.StatusNotFound)
 		return
 	}
-	addr := newAddress(bktInfo.CID, foundOid.OID)
 
-	f(ctx, *h.newRequest(c, log), addr)
+	addr := newAddress(cnrID, foundOID.OID)
+	handler(ctx, h.newRequest(c, log), addr)
 }
 
-// byAttribute is a wrapper similar to byNativeAddress.
+func (h *Handler) byNativeAddress(ctx context.Context, req request, cnrID cid.ID, objID oid.ID, handler func(context.Context, request, oid.Address)) {
-func (h *Handler) byAttribute(c *fasthttp.RequestCtx, f func(context.Context, request, oid.Address)) {
+	addr := newAddress(cnrID, objID)
-	scid, _ := c.UserValue("cid").(string)
+	handler(ctx, req, addr)
+}
+
+func (h *Handler) byAttribute(c *fasthttp.RequestCtx, handler func(context.Context, request, oid.Address)) {
+	cidParam, _ := c.UserValue("cid").(string)
 	key, _ := c.UserValue("attr_key").(string)
 	val, _ := c.UserValue("attr_val").(string)
 
@@ -271,21 +237,21 @@ func (h *Handler) byAttribute(c *fasthttp.RequestCtx, f func(context.Context, re
 
 	key, err := url.QueryUnescape(key)
 	if err != nil {
-		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", scid), zap.String("attr_key", key), zap.Error(err))
+		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", cidParam), zap.String("attr_key", key), zap.Error(err))
 		response.Error(c, "could not unescape attr_key: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
 	val, err = url.QueryUnescape(val)
 	if err != nil {
-		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", scid), zap.String("attr_val", val), zap.Error(err))
+		log.Error(logs.FailedToUnescapeQuery, zap.String("cid", cidParam), zap.String("attr_val", val), zap.Error(err))
 		response.Error(c, "could not unescape attr_val: "+err.Error(), fasthttp.StatusBadRequest)
 		return
 	}
 
-	log = log.With(zap.String("cid", scid), zap.String("attr_key", key), zap.String("attr_val", val))
+	log = log.With(zap.String("cid", cidParam), zap.String("attr_key", key), zap.String("attr_val", val))
 
-	bktInfo, err := h.getBucketInfo(ctx, scid, log)
+	bktInfo, err := h.getBucketInfo(ctx, cidParam, log)
 	if err != nil {
 		logAndSendBucketError(c, log, err)
 		return
@@ -315,25 +281,11 @@ func (h *Handler) byAttribute(c *fasthttp.RequestCtx, f func(context.Context, re
 		return
 	}
 
-	var addrObj oid.Address
+	var addr oid.Address
-	addrObj.SetContainer(bktInfo.CID)
+	addr.SetContainer(bktInfo.CID)
-	addrObj.SetObject(buf[0])
+	addr.SetObject(buf[0])
 
-	f(ctx, *h.newRequest(c, log), addrObj)
+	handler(ctx, h.newRequest(c, log), addr)
-}
-
-// resolveContainer decode container id, if it's not a valid container id
-// then trey to resolve name using provided resolver.
-func (h *Handler) resolveContainer(ctx context.Context, containerID string) (*cid.ID, error) {
-	cnrID := new(cid.ID)
-	err := cnrID.DecodeString(containerID)
-	if err != nil {
-		cnrID, err = h.containerResolver.Resolve(ctx, containerID)
-		if err != nil && strings.Contains(err.Error(), "not found") {
-			err = fmt.Errorf("%w: %s", new(apistatus.ContainerNotFound), err.Error())
-		}
-	}
-	return cnrID, err
 }
 
 func (h *Handler) getBucketInfo(ctx context.Context, containerName string, log *zap.Logger) (*data.BucketInfo, error) {
@@ -388,7 +340,7 @@ func (h *Handler) readContainer(ctx context.Context, cnrID cid.ID) (*data.Bucket
 	return bktInfo, err
 }
 
-func (h *Handler) browseIndex(c *fasthttp.RequestCtx) {
+func (h *Handler) browseIndex(c *fasthttp.RequestCtx, isNativeList bool) {
 	if !h.config.IndexPageEnabled() {
 		c.SetStatusCode(fasthttp.StatusNotFound)
 		return
@@ -414,18 +366,9 @@ func (h *Handler) browseIndex(c *fasthttp.RequestCtx) {
 	}
 
 	listFunc := h.getDirObjectsS3
-	isNativeList := false
+	if isNativeList {
-
+		// tree probe failed, trying to use native
-	err = h.tree.CheckSettingsNodeExist(ctx, bktInfo)
+		listFunc = h.getDirObjectsNative
-	if err != nil {
-		if errors.Is(err, tree.ErrNodeNotFound) {
-			// tree probe failed, try to use native
-			listFunc = h.getDirObjectsNative
-			isNativeList = true
-		} else {
-			logAndSendBucketError(c, log, err)
-			return
-		}
 	}
 
 	h.browseObjects(c, browseParams{

internal/handler/handler_test.go

@@ -24,6 +24,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	treepool "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/panjf2000/ants/v2"
@@ -32,14 +33,29 @@ import (
 	"go.uber.org/zap"
 )
 
-type treeClientMock struct {
+type treeServiceMock struct {
+	system map[string]map[string]*data.BaseNodeVersion
 }
 
-func (t *treeClientMock) GetNodes(context.Context, *tree.GetNodesParams) ([]tree.NodeResponse, error) {
+func newTreeService() *treeServiceMock {
-	return nil, nil
+	return &treeServiceMock{
+		system: make(map[string]map[string]*data.BaseNodeVersion),
+	}
 }
 
-func (t *treeClientMock) GetSubTree(context.Context, *data.BucketInfo, string, []uint64, uint32, bool) ([]tree.NodeResponse, error) {
+func (t *treeServiceMock) CheckSettingsNodeExists(context.Context, *data.BucketInfo) error {
+	_, ok := t.system["bucket-settings"]
+	if !ok {
+		return treepool.ErrNodeNotFound
+	}
+	return nil
+}
+
+func (t *treeServiceMock) GetSubTreeByPrefix(context.Context, *data.BucketInfo, string, bool) ([]tree.NodeResponse, string, error) {
+	return nil, "", nil
+}
+
+func (t *treeServiceMock) GetLatestVersion(context.Context, *cid.ID, string) (*data.NodeVersion, error) {
 	return nil, nil
 }
 
@@ -84,7 +100,7 @@ type handlerContext struct {
 
 	h       *Handler
 	frostfs *TestFrostFS
-	tree    *treeClientMock
+	tree    *treeServiceMock
 	cfg     *configMock
 }
 
@@ -125,14 +141,14 @@ func prepareHandlerContext() (*handlerContext, error) {
 		}),
 	}
 
-	treeMock := &treeClientMock{}
+	treeMock := newTreeService()
 	cfgMock := &configMock{}
 
-	workerPool, err := ants.NewPool(1000)
+	workerPool, err := ants.NewPool(1)
 	if err != nil {
 		return nil, err
 	}
-	handler := New(params, cfgMock, tree.NewTree(treeMock), workerPool)
+	handler := New(params, cfgMock, treeMock, workerPool)
 
 	return &handlerContext{
 		key:     key,

internal/handler/head.go

@@ -2,6 +2,7 @@ package handler
 
 import (
 	"context"
+	"errors"
 	"io"
 	"net/http"
 	"strconv"
@@ -11,6 +12,7 @@ import (
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/utils"
 	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree"
 	"github.com/valyala/fasthttp"
 	"go.uber.org/zap"
 )
@@ -102,14 +104,36 @@ func idsToResponse(resp *fasthttp.Response, obj *object.Object) {
 
 // HeadByAddressOrBucketName handles head requests using simple cid/oid or bucketname/key format.
 func (h *Handler) HeadByAddressOrBucketName(c *fasthttp.RequestCtx) {
-	test, _ := c.UserValue("oid").(string)
+	cidParam, _ := c.UserValue("cid").(string)
-	var id oid.ID
+	oidParam, _ := c.UserValue("oid").(string)
 
-	err := id.DecodeString(test)
+	ctx := utils.GetContextFromRequest(c)
+	log := utils.GetReqLogOrDefault(ctx, h.log).With(
+		zap.String("cid", cidParam),
+		zap.String("oid", oidParam),
+	)
+
+	bktInfo, err := h.getBucketInfo(ctx, cidParam, log)
 	if err != nil {
-		h.byS3Path(c, h.headObject)
+		logAndSendBucketError(c, log, err)
+		return
+	}
+	checkS3Err := h.tree.CheckSettingsNodeExists(ctx, bktInfo)
+	if checkS3Err != nil && !errors.Is(checkS3Err, tree.ErrNodeNotFound) {
+		logAndSendBucketError(c, log, checkS3Err)
+		return
+	}
+
+	req := h.newRequest(c, log)
+
+	var objID oid.ID
+	if checkS3Err == nil {
+		h.byS3Path(ctx, req, bktInfo.CID, oidParam, h.headObject)
+	} else if err = objID.DecodeString(oidParam); err == nil {
+		h.byNativeAddress(ctx, req, bktInfo.CID, objID, h.headObject)
 	} else {
-		h.byNativeAddress(c, h.headObject)
+		logAndSendBucketError(c, log, checkS3Err)
+		return
 	}
 }
 

internal/handler/utils.go

@@ -42,16 +42,7 @@ func bearerToken(ctx context.Context) *bearer.Token {
 }
 
 func isDir(name string) bool {
-	return strings.HasSuffix(name, "/")
+	return name == "" || strings.HasSuffix(name, "/")
-}
-
-func isObjectID(s string) bool {
-	var objID oid.ID
-	return objID.DecodeString(s) == nil
-}
-
-func isContainerRoot(key string) bool {
-	return key == ""
 }
 
 func loadAttributes(attrs []object.Attribute) map[string]string {

internal/layer/tree_service.go

@@ -0,0 +1,16 @@
+package layer
+
+import (
+	"context"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
+	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/tree"
+	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
+)
+
+// TreeService provide interface to interact with tree service using s3 data models.
+type TreeService interface {
+	GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*data.NodeVersion, error)
+	GetSubTreeByPrefix(ctx context.Context, bktInfo *data.BucketInfo, prefix string, latestOnly bool) ([]tree.NodeResponse, string, error)
+	CheckSettingsNodeExists(ctx context.Context, bktInfo *data.BucketInfo) error
+}

internal/logs/logs.go

@@ -79,6 +79,11 @@ const (
 	InvalidLifetimeUsingDefaultValue                                      = "invalid lifetime, using default value (in seconds)"                                     // Error in ../../cmd/http-gw/settings.go
 	InvalidCacheSizeUsingDefaultValue                                     = "invalid cache size, using default value"                                                // Error in ../../cmd/http-gw/settings.go
 	FailedToUnescapeQuery                                                 = "failed to unescape query"
+	FailedToParseAddressInTreeNode                                        = "failed to parse object addr in tree node"
+	SettingsNodeInvalidOwnerKey                                           = "settings node: invalid owner key"
+	SystemNodeHasMultipleIDs                                              = "system node has multiple ids"
+	FailedToRemoveOldSystemNode                                           = "failed to remove old system node"
+	BucketSettingsNodeHasMultipleIDs                                      = "bucket settings node has multiple ids"
 	ServerReconnecting                                                    = "reconnecting server..."
 	ServerReconnectedSuccessfully                                         = "server reconnected successfully"
 	ServerReconnectFailed                                                 = "failed to reconnect server"

internal/service/frostfs/tree_pool_wrapper.go

@@ -2,8 +2,6 @@ package frostfs
 
 import (
 	"context"
-	"errors"
-	"fmt"
 	"io"
 
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
@@ -59,7 +57,7 @@ func (w *PoolWrapper) GetNodes(ctx context.Context, prm *tree.GetNodesParams) ([
 
 	nodes, err := w.p.GetNodes(ctx, poolPrm)
 	if err != nil {
-		return nil, handleError(err)
+		return nil, err
 	}
 
 	res := make([]tree.NodeResponse, len(nodes))
@@ -78,20 +76,6 @@ func getBearer(ctx context.Context) []byte {
 	return token.Marshal()
 }
 
-func handleError(err error) error {
-	if err == nil {
-		return nil
-	}
-	if errors.Is(err, treepool.ErrNodeNotFound) {
-		return fmt.Errorf("%w: %s", tree.ErrNodeNotFound, err.Error())
-	}
-	if errors.Is(err, treepool.ErrNodeAccessDenied) {
-		return fmt.Errorf("%w: %s", tree.ErrNodeAccessDenied, err.Error())
-	}
-
-	return err
-}
-
 func (w *PoolWrapper) GetSubTree(ctx context.Context, bktInfo *data.BucketInfo, treeID string, rootID []uint64, depth uint32, sort bool) ([]tree.NodeResponse, error) {
 	order := treepool.NoneOrder
 	if sort {
@@ -115,7 +99,7 @@ func (w *PoolWrapper) GetSubTree(ctx context.Context, bktInfo *data.BucketInfo,
 
 	subTreeReader, err := w.p.GetSubTree(ctx, poolPrm)
 	if err != nil {
-		return nil, handleError(err)
+		return nil, err
 	}
 
 	var subtree []tree.NodeResponse
@@ -126,7 +110,7 @@ func (w *PoolWrapper) GetSubTree(ctx context.Context, bktInfo *data.BucketInfo,
 		node, err = subTreeReader.Next()
 	}
 	if err != io.EOF {
-		return nil, handleError(err)
+		return nil, err
 	}
 
 	return subtree, nil

tree/tree.go

@@ -6,11 +6,10 @@ import (
 	"fmt"
 	"strings"
 
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/api"
-	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/api/layer"
 	"git.frostfs.info/TrueCloudLab/frostfs-http-gw/internal/data"
 	cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
 	oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
+	"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/pool/tree"
 )
 
 type (
@@ -46,14 +45,6 @@ type (
 	}
 )
 
-var (
-	// ErrNodeNotFound is returned from ServiceClient in case of not found error.
-	ErrNodeNotFound = layer.ErrNodeNotFound
-
-	// ErrNodeAccessDenied is returned from ServiceClient service in case of access denied error.
-	ErrNodeAccessDenied = layer.ErrNodeAccessDenied
-)
-
 const (
 	FileNameKey      = "FileName"
 	settingsFileName = "bucket-settings"
@@ -118,7 +109,7 @@ func (n *treeNode) FileName() (string, bool) {
 	return value, ok
 }
 
-func newNodeVersion(node NodeResponse) (*api.NodeVersion, error) {
+func newNodeVersion(node NodeResponse) (*data.NodeVersion, error) {
 	tNode, err := newTreeNode(node)
 	if err != nil {
 		return nil, fmt.Errorf("invalid tree node: %w", err)
@@ -127,15 +118,11 @@ func newNodeVersion(node NodeResponse) (*api.NodeVersion, error) {
 	return newNodeVersionFromTreeNode(tNode), nil
 }
 
-func newNodeVersionFromTreeNode(treeNode *treeNode) *api.NodeVersion {
+func newNodeVersionFromTreeNode(treeNode *treeNode) *data.NodeVersion {
-	_, isDeleteMarker := treeNode.Get(isDeleteMarkerKV)
+	version := &data.NodeVersion{
-	size, _ := treeNode.Get(sizeKV)
+		BaseNodeVersion: data.BaseNodeVersion{
-	version := &api.NodeVersion{
-		BaseNodeVersion: api.BaseNodeVersion{
 			OID: treeNode.ObjID,
 		},
-		DeleteMarker: isDeleteMarker,
-		IsPrefixNode: size == "",
 	}
 
 	return version
@@ -180,7 +167,7 @@ func (m *multiSystemNode) Old() []*treeNode {
 	return m.nodes[1:]
 }
 
-func (c *Tree) GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*api.NodeVersion, error) {
+func (c *Tree) GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*data.NodeVersion, error) {
 	nodes, err := c.GetVersions(ctx, cnrID, objectName)
 	if err != nil {
 		return nil, err
@@ -210,7 +197,7 @@ func (c *Tree) GetVersions(ctx context.Context, cnrID *cid.ID, objectName string
 	return c.service.GetNodes(ctx, p)
 }
 
-func (c *Tree) CheckSettingsNodeExist(ctx context.Context, bktInfo *data.BucketInfo) error {
+func (c *Tree) CheckSettingsNodeExists(ctx context.Context, bktInfo *data.BucketInfo) error {
 	_, err := c.getSystemNode(ctx, bktInfo, settingsFileName)
 	if err != nil {
 		return err
@@ -236,7 +223,7 @@ func (c *Tree) getSystemNode(ctx context.Context, bktInfo *data.BucketInfo, name
 	nodes = filterMultipartNodes(nodes)
 
 	if len(nodes) == 0 {
-		return nil, ErrNodeNotFound
+		return nil, tree.ErrNodeNotFound
 	}
 
 	return newMultiNode(nodes)
@@ -277,7 +264,7 @@ func getLatestVersionNode(nodes []NodeResponse) (NodeResponse, error) {
 	}
 
 	if targetIndexNode == -1 {
-		return nil, layer.ErrNodeNotFound
+		return nil, tree.ErrNodeNotFound
 	}
 
 	return nodes[targetIndexNode], nil
@@ -305,7 +292,7 @@ func (c *Tree) GetSubTreeByPrefix(ctx context.Context, bktInfo *data.BucketInfo,
 	}
 	subTree, err := c.service.GetSubTree(ctx, bktInfo, versionTree, rootID, 2, false)
 	if err != nil {
-		if errors.Is(err, layer.ErrNodeNotFound) {
+		if errors.Is(err, tree.ErrNodeNotFound) {
 			return nil, "", nil
 		}
 		return nil, "", err
@@ -386,7 +373,7 @@ func (c *Tree) getPrefixNodeID(ctx context.Context, bktInfo *data.BucketInfo, tr
 	}
 
 	if len(intermediateNodes) == 0 {
-		return nil, layer.ErrNodeNotFound
+		return nil, tree.ErrNodeNotFound
 	}
 
 	return intermediateNodes, nil