@@ -162,6 +169,7 @@ func newApp(ctx context.Context, opt ...Option) App {
 	if err != nil {
 		a.log.Fatal("failed to dial pool", zap.Error(err))
 	}
+	a.key = getWalletKey(a.log, a.cfg)

@@ -0,0 +1,61 @@
+package wallet

@@ -44,6 +50,7 @@ type (
 		services  []*metrics.Service
 		settings  *appSettings
 		servers   []Server
+		treeSvc   *tree.Tree

@@ -0,0 +1,28 @@
+package accessbox

@@ -0,0 +292,4 @@
+}
+
+func getBearer(ctx context.Context, bktInfo *data.BucketInfo) []byte {
+	if bd, ok := ctx.Value(api.BoxData).(*accessbox.Box); ok && bd != nil && bd.Gate != nil {

@@ -0,0 +1,174 @@
+package layer

@@ -0,0 +8,4 @@
+)
+
+// TreeService provide interface to interact with tree service using s3 data models.
+type TreeService interface {

@@ -0,0 +1,7 @@
+package api

@@ -0,0 +1,39 @@
+package data

@@ -0,0 +1,50 @@
+package data

@@ -0,0 +1,127 @@
+package data

@@ -211,6 +213,7 @@ type Downloader struct {
 	pool              *pool.Pool
 	containerResolver *resolver.ContainerResolver
 	settings          *Settings
+	tree              *tree.Tree

@@ -0,0 +21,4 @@
+
+	// ServiceClient is a client to interact with tree service.
+	// Each method must return ErrNodeNotFound or ErrNodeAccessDenied if relevant.
+	ServiceClient interface {

@@ -0,0 +40,4 @@
+	}
+
+	GetNodesParams struct {
+		BktInfo    *data.BucketInfo

@@ -0,0 +256,4 @@
+	return nil
+}
+
+func (c *ServiceClientGRPC) RemoveNode(ctx context.Context, bktInfo *data.BucketInfo, treeID string, nodeID uint64) error {

@@ -0,0 +65,4 @@
+}
+
+// MultipartInfo is multipart upload information.
+type MultipartInfo struct {

@@ -119,3 +124,3 @@
 	a.webServer.StreamRequestBody = a.cfg.GetBool(cfgWebStreamRequestBody)
 	// -- -- -- -- -- -- -- -- -- -- -- -- -- --
-	key, err = getFrostFSKey(a)
+	pvtKey, err := getFrostFSKey(a)

@@ -120,2 +125,3 @@
 	// -- -- -- -- -- -- -- -- -- -- -- -- -- --
-	key, err = getFrostFSKey(a)
+	pvtKey, err := getFrostFSKey(a)
+	key = &pvtKey.PrivateKey

@@ -469,3 +477,3 @@
 	r.GET("/zip/{cid}/{prefix:*}", a.logger(downloadRoutes.DownloadZipped))
 	a.log.Info("added path /zip/{cid}/{prefix}")
-
+	r.GET("/s3get/{bucketname}/{key}", a.logger(downloadRoutes.DownloadByBucketName))

@@ -283,0 +314,4 @@
+	addr.SetContainer(*cnrID)
+
+	// TODO where i've to take UID?
+	foundOid, err := d.tree.GetLatestVersion(d.appCtx, cnrID, user.ID{}, key)

@@ -283,0 +315,4 @@
+
+	// TODO where i've to take UID?
+	foundOid, err := d.tree.GetLatestVersion(d.appCtx, cnrID, user.ID{}, key)
+	if err != nil {

@@ -283,0 +292,4 @@
+// prepares request and object address to it.
+func (d *Downloader) byBucketname(c *fasthttp.RequestCtx, f func(request, *pool.Pool, oid.Address)) {
+	var (
+		bucketname, _ = c.UserValue("bucketname").(string)

@@ -0,0 +30,4 @@
+type BaseNodeVersion struct {
+	ID        uint64
+	ParenID   uint64
+	OID       oid.ID

@@ -0,0 +180,4 @@
+}
+
+func (c *Tree) GetLatestVersion(ctx context.Context, cnrID *cid.ID, UID user.ID, objectName string) (*api.NodeVersion, error) {
+	meta := []string{oidKV, isUnversionedKV, isDeleteMarkerKV, etagKV, sizeKV}

@@ -0,0 +10,4 @@
+// NodeVersion represent node from tree service.
+type NodeVersion struct {
+	BaseNodeVersion
+	DeleteMarker  *DeleteMarkerInfo

@@ -0,0 +11,4 @@
+type NodeVersion struct {
+	BaseNodeVersion
+	DeleteMarker  *DeleteMarkerInfo
+	IsUnversioned bool

@@ -468,4 +472,3 @@
 	a.log.Info("added path /get_by_attribute/{cid}/{attr_key}/{attr_val:*}")
 	r.GET("/zip/{cid}/{prefix:*}", a.logger(downloadRoutes.DownloadZipped))
 	a.log.Info("added path /zip/{cid}/{prefix}")
-

@@ -0,0 +31,4 @@
+		ObjID     oid.ID
+		TimeStamp uint64
+		Size      int64
+		Meta      map[string]string

@@ -0,0 +121,4 @@
+	return value, ok
+}
+
+func newNodeVersion(filePath string, node NodeResponse) (*api.NodeVersion, error) {

@@ -113,1 +112,3 @@
-	d.byAddress(c, request.headObject)
+// HeadByAddressOrBucketName handles head requests using simple cid/oid or bucketname/key format.
+func (d *Downloader) HeadByAddressOrBucketName(c *fasthttp.RequestCtx) {
+	test, _ := c.UserValue("cid").(string)

@@ -0,0 +10,4 @@
+	DeleteMarker bool
+}
+
+func (v NodeVersion) IsDeleteMarker() bool {

@@ -127,2 +134,4 @@
+	}
 }
 
+

@@ -0,0 +129,4 @@
+		},
+	}
+
+	if isDeleteMarker {

@@ -0,0 +57,4 @@
+	// keys for delete marker nodes.
+	isDeleteMarkerKV = "IsDeleteMarker"
+	ownerKV          = "Owner"
+	createdKV        = "Created"

@@ -0,0 +136,4 @@
+}
+
+func (c *Tree) GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*api.NodeVersion, error) {
+	meta := []string{oidKV, isUnversionedKV, isDeleteMarkerKV}

@@ -0,0 +1,520 @@
+//*

@@ -293,0 +329,4 @@
+
+	foundOid, err := d.tree.GetLatestVersion(d.appCtx, cnrID, key)
+	if err != nil || foundOid.IsDeleteMarker() {
+		log.Error("object wasn't found", zap.Error(err))

@@ -293,0 +322,4 @@
+		response.Error(c, "could not fetch and store bearer token: "+err.Error(), fasthttp.StatusBadRequest)
+		return
+	}
+	d.appCtx = ctx

@@ -293,0 +333,4 @@
+		return
+	}
+	if foundOid.DeleteMarker {
+		response.Error(c, "object deleted", fasthttp.StatusNotFound)

@@ -0,0 +75,4 @@
+	GetMeta() []Meta
+	GetNodeID() uint64
+	GetParentID() uint64
+	GetTimestamp() uint64

@@ -293,0 +324,4 @@
+	}
+
+	var addr oid.Address
+	addr.SetContainer(*cnrID)

@@ -40,2 +39,4 @@
 	@mkdir -p $@
 
+# Synchronize tree service
+sync-tree:

@@ -478,2 +482,2 @@
-	r.GET("/get/{cid}/{oid}", a.logger(downloadRoutes.DownloadByAddress))
-	r.HEAD("/get/{cid}/{oid}", a.logger(downloadRoutes.HeadByAddress))
+	r.GET("/get/{cid}/{oid}", a.logger(downloadRoutes.DownloadByAddressOrBucketName))
+	r.HEAD("/get/{cid}/{oid}", a.logger(downloadRoutes.HeadByAddressOrBucketName))

@@ -293,0 +337,4 @@
+	var addr oid.Address
+	addr.SetContainer(*cnrID)
+
+	addr.SetObject(foundOid.OID)