[#420] Using tree service to list object versions

Signed-off-by: Denis Kirillov <denis@nspcc.ru>

api/cache/objectslist.go

@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"github.com/bluele/gcache"
+	"github.com/nspcc-dev/neofs-s3-gw/api/data"
 	cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
 	oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
 	"go.uber.org/zap"
@@ -78,6 +79,21 @@ func (l *ObjectsListCache) Get(key ObjectsListKey) []oid.ID {
 	return result
 }
 
+// GetVersions returns a list of ObjectInfo.
+func (l *ObjectsListCache) GetVersions(key ObjectsListKey) []*data.NodeVersion {
+	entry, err := l.cache.Get(key)
+	if err != nil {
+		return nil
+	}
+
+	result, ok := entry.([]*data.NodeVersion)
+	if !ok {
+		return nil
+	}
+
+	return result
+}
+
 // Put puts a list of objects to cache.
 func (l *ObjectsListCache) Put(key ObjectsListKey, oids []oid.ID) error {
 	if len(oids) == 0 {
@@ -87,6 +103,15 @@ func (l *ObjectsListCache) Put(key ObjectsListKey, oids []oid.ID) error {
 	return l.cache.Set(key, oids)
 }
 
+// PutVersions puts a list of object versions to cache.
+func (l *ObjectsListCache) PutVersions(key ObjectsListKey, versions []*data.NodeVersion) error {
+	if len(versions) == 0 {
+		return fmt.Errorf("list versions is empty, cid: %s, prefix: %s", key.cid, key.prefix)
+	}
+
+	return l.cache.Set(key, versions)
+}
+
 // CleanCacheEntriesContainingObject deletes entries containing specified object.
 func (l *ObjectsListCache) CleanCacheEntriesContainingObject(objectName string, cnr cid.ID) {
 	cidStr := cnr.EncodeToString()

api/data/info.go

@@ -31,6 +31,7 @@ type (
 		ID             oid.ID
 		CID            cid.ID
 		IsDir          bool
+		IsDeleteMarker bool
 
 		Bucket        string
 		Name          string

api/data/tree.go

@@ -0,0 +1,37 @@
+package data
+
+import (
+	"time"
+
+	oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
+	"github.com/nspcc-dev/neofs-sdk-go/user"
+)
+
+// NodeVersion represent node from tree service.
+type NodeVersion struct {
+	BaseNodeVersion
+	DeleteMarker  *DeleteMarkerInfo
+	IsUnversioned bool
+}
+
+// DeleteMarkerInfo is used to save object info if node in the tree service is delete marker.
+// We need this information because the "delete marker" object is no longer stored in NeoFS.
+type DeleteMarkerInfo struct {
+	FilePath string
+	Created  time.Time
+	Owner    user.ID
+}
+
+// ExtendedObjectInfo contains additional node info to be able to sort versions by timestamp.
+type ExtendedObjectInfo struct {
+	ObjectInfo  *ObjectInfo
+	NodeVersion *NodeVersion
+}
+
+// BaseNodeVersion is minimal node info from tree service.
+// Basically used for "system" object.
+type BaseNodeVersion struct {
+	ID        uint64
+	OID       oid.ID
+	Timestamp uint64
+}

api/layer/layer.go

@@ -8,6 +8,7 @@ import (
 	"io"
 	"net/url"
 	"strings"
+	"time"
 
 	"github.com/nats-io/nats.go"
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
@@ -562,11 +563,15 @@ func (n *layer) deleteObject(ctx context.Context, bkt *data.BucketInfo, settings
 		}
 
 		obj.DeleteMarkVersion = unversionedObjectVersionID
-		newVersion := &NodeVersion{
+		newVersion := &data.NodeVersion{
-			BaseNodeVersion: BaseNodeVersion{
+			BaseNodeVersion: data.BaseNodeVersion{
 				OID: *randOID,
 			},
-			IsDeleteMarker: true,
+			DeleteMarker: &data.DeleteMarkerInfo{
+				FilePath: obj.Name,
+				Created:  time.Now(),
+				Owner:    n.Owner(ctx),
+			},
 			IsUnversioned: true,
 		}
 
@@ -595,14 +600,14 @@ func (n *layer) deleteObject(ctx context.Context, bkt *data.BucketInfo, settings
 	return obj
 }
 
-func (n *layer) removeVersionIfFound(ctx context.Context, bkt *data.BucketInfo, versions []*NodeVersion, obj *VersionedObject) (string, error) {
+func (n *layer) removeVersionIfFound(ctx context.Context, bkt *data.BucketInfo, versions []*data.NodeVersion, obj *VersionedObject) (string, error) {
 	for _, version := range versions {
 		if version.OID.EncodeToString() != obj.VersionID {
 			continue
 		}
 
 		var deleteMarkVersion string
-		if version.IsDeleteMarker {
+		if version.DeleteMarker != nil {
 			deleteMarkVersion = obj.VersionID
 		}
 

api/layer/object.go

@@ -171,7 +171,7 @@ func (n *layer) PutObject(ctx context.Context, p *PutObjectParams) (*data.Object
 	own := n.Owner(ctx)
 
 	versioningEnabled := n.isVersioningEnabled(ctx, p.BktInfo)
-	newVersion := &NodeVersion{IsUnversioned: !versioningEnabled}
+	newVersion := &data.NodeVersion{IsUnversioned: !versioningEnabled}
 
 	r := p.Reader
 	if r != nil {
@@ -283,7 +283,7 @@ func (n *layer) headLastVersionIfNotDeleted(ctx context.Context, bkt *data.Bucke
 		return nil, err
 	}
 
-	if node.IsDeleteMarker {
+	if node.DeleteMarker != nil {
 		return nil, apiErrors.GetAPIError(apiErrors.ErrNoSuchKey)
 	}
 
@@ -365,7 +365,7 @@ func (n *layer) headVersion(ctx context.Context, bkt *data.BucketInfo, p *HeadOb
 		return nil, fmt.Errorf("couldn't get versions: %w", err)
 	}
 
-	var foundVersion *NodeVersion
+	var foundVersion *data.NodeVersion
 	for _, version := range versions {
 		if version.OID.EncodeToString() == p.VersionID {
 			foundVersion = version
@@ -554,42 +554,57 @@ func (n *layer) getLatestObjectsVersions(ctx context.Context, bkt *data.BucketIn
 	return objects, nil
 }
 
-func (n *layer) getAllObjectsVersions(ctx context.Context, bkt *data.BucketInfo, prefix, delimiter string) (map[string]*objectVersions, error) {
+func (n *layer) getAllObjectsVersions(ctx context.Context, bkt *data.BucketInfo, prefix, delimiter string) (map[string][]*data.ExtendedObjectInfo, error) {
 	var err error
 
 	cacheKey := cache.CreateObjectsListCacheKey(&bkt.CID, prefix, false)
-	ids := n.listsCache.Get(cacheKey)
+	nodeVersions := n.listsCache.GetVersions(cacheKey)
 
-	if ids == nil {
+	if nodeVersions == nil {
-		ids, err = n.objectSearch(ctx, &findParams{bkt: bkt, prefix: prefix})
+		nodeVersions, err = n.treeService.GetAllVersionsByPrefix(ctx, &bkt.CID, prefix)
 		if err != nil {
 			return nil, err
 		}
-		if err = n.listsCache.Put(cacheKey, ids); err != nil {
+		if err = n.listsCache.PutVersions(cacheKey, nodeVersions); err != nil {
 			n.log.Error("couldn't cache list of objects", zap.Error(err))
 		}
 	}
 
-	versions := make(map[string]*objectVersions, len(ids)/2)
+	versions := make(map[string][]*data.ExtendedObjectInfo, len(nodeVersions))
 
-	for i := 0; i < len(ids); i++ {
+	for _, nodeVersion := range nodeVersions {
-		obj := n.objectFromObjectsCacheOrNeoFS(ctx, bkt, ids[i])
+		oi := &data.ObjectInfo{}
+
+		if nodeVersion.DeleteMarker != nil { // delete marker does not match any object in NeoFS
+			oi.ID = nodeVersion.OID
+			oi.Name = nodeVersion.DeleteMarker.FilePath
+			oi.Owner = nodeVersion.DeleteMarker.Owner
+			oi.Created = nodeVersion.DeleteMarker.Created
+			oi.IsDeleteMarker = true
+		} else {
+			obj := n.objectFromObjectsCacheOrNeoFS(ctx, bkt, nodeVersion.OID)
 			if obj == nil {
 				continue
 			}
-		if oi := objectInfoFromMeta(bkt, obj, prefix, delimiter); oi != nil {
+			oi = objectInfoFromMeta(bkt, obj, prefix, delimiter)
-			if isSystem(oi) {
+			if oi == nil {
 				continue
 			}
+		}
+
+		eoi := &data.ExtendedObjectInfo{
+			ObjectInfo:  oi,
+			NodeVersion: nodeVersion,
+		}
 
 		objVersions, ok := versions[oi.Name]
 		if !ok {
-				objVersions = newObjectVersions(oi.Name)
+			objVersions = []*data.ExtendedObjectInfo{eoi}
+		} else if !oi.IsDir {
+			objVersions = append(objVersions, eoi)
 		}
-			objVersions.appendVersion(oi)
 		versions[oi.Name] = objVersions
 	}
-	}
 
 	return versions, nil
 }

api/layer/system_object.go

@@ -122,7 +122,7 @@ func (n *layer) putSystemObjectIntoNeoFS(ctx context.Context, p *PutSystemObject
 		return nil, err
 	}
 
-	newVersion := &BaseNodeVersion{OID: *id}
+	newVersion := &data.BaseNodeVersion{OID: *id}
 	if err = n.treeService.AddSystemVersion(ctx, &p.BktInfo.CID, p.ObjName, newVersion); err != nil {
 		return nil, fmt.Errorf("couldn't add new verion to tree service: %w", err)
 	}

api/layer/tree_service.go

@@ -30,28 +30,18 @@ type TreeService interface {
 	// DeleteBucketCORS removes a node from a system tree and returns objID which must be deleted in NeoFS
 	DeleteBucketCORS(ctx context.Context, cnrID *cid.ID) (*oid.ID, error)
 
-	GetVersions(ctx context.Context, cnrID *cid.ID, objectName string) ([]*NodeVersion, error)
+	GetVersions(ctx context.Context, cnrID *cid.ID, objectName string) ([]*data.NodeVersion, error)
-	GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*NodeVersion, error)
+	GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*data.NodeVersion, error)
 	GetLatestVersionsByPrefix(ctx context.Context, cnrID *cid.ID, prefix string) ([]oid.ID, error)
-	GetUnversioned(ctx context.Context, cnrID *cid.ID, objectName string) (*NodeVersion, error)
+	GetAllVersionsByPrefix(ctx context.Context, cnrID *cid.ID, prefix string) ([]*data.NodeVersion, error)
-	AddVersion(ctx context.Context, cnrID *cid.ID, objectName string, newVersion *NodeVersion) error
+	GetUnversioned(ctx context.Context, cnrID *cid.ID, objectName string) (*data.NodeVersion, error)
+	AddVersion(ctx context.Context, cnrID *cid.ID, objectName string, newVersion *data.NodeVersion) error
 	RemoveVersion(ctx context.Context, cnrID *cid.ID, nodeID uint64) error
 
-	AddSystemVersion(ctx context.Context, cnrID *cid.ID, objectName string, newVersion *BaseNodeVersion) error
+	AddSystemVersion(ctx context.Context, cnrID *cid.ID, objectName string, newVersion *data.BaseNodeVersion) error
-	GetSystemVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*BaseNodeVersion, error)
+	GetSystemVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*data.BaseNodeVersion, error)
 	RemoveSystemVersion(ctx context.Context, cnrID *cid.ID, nodeID uint64) error
 }
 
-type NodeVersion struct {
-	BaseNodeVersion
-	IsDeleteMarker bool
-	IsUnversioned  bool
-}
-
-type BaseNodeVersion struct {
-	ID  uint64
-	OID oid.ID
-}
-
 // ErrNodeNotFound is returned from Tree service in case of not found error.
 var ErrNodeNotFound = errors.New("not found")

api/layer/versioning.go

@@ -267,7 +267,6 @@ func (n *layer) ListObjectVersions(ctx context.Context, p *ListObjectVersionsPar
 	var (
 		allObjects = make([]*data.ObjectInfo, 0, p.MaxKeys)
 		res        = &ListObjectVersionsInfo{}
-		reverse    = true
 	)
 
 	versions, err := n.getAllObjectsVersions(ctx, p.BktInfo, p.Prefix, p.Delimiter)
@@ -282,7 +281,14 @@ func (n *layer) ListObjectVersions(ctx context.Context, p *ListObjectVersionsPar
 	sort.Strings(sortedNames)
 
 	for _, name := range sortedNames {
-		allObjects = append(allObjects, versions[name].getFiltered(reverse)...)
+		sortedVersions := versions[name]
+		sort.Slice(sortedVersions, func(i, j int) bool {
+			return sortedVersions[j].NodeVersion.Timestamp < sortedVersions[i].NodeVersion.Timestamp // sort in reverse order
+		})
+
+		for _, version := range sortedVersions {
+			allObjects = append(allObjects, version.ObjectInfo)
+		}
 	}
 
 	for i, obj := range allObjects {
@@ -325,7 +331,7 @@ func triageVersions(objVersions []*ObjectVersionInfo) ([]*ObjectVersionInfo, []*
 	var resDelMarkVersions []*ObjectVersionInfo
 
 	for _, version := range objVersions {
-		if version.Object.Headers[VersionsDeleteMarkAttr] == DelMarkFullObject {
+		if version.Object.IsDeleteMarker {
 			resDelMarkVersions = append(resDelMarkVersions, version)
 		} else {
 			resVersion = append(resVersion, version)

api/layer/versioning_test.go

@@ -11,6 +11,7 @@ import (
 	"github.com/nspcc-dev/neofs-s3-gw/api"
 	"github.com/nspcc-dev/neofs-s3-gw/api/data"
 	"github.com/nspcc-dev/neofs-s3-gw/creds/accessbox"
+	treetest "github.com/nspcc-dev/neofs-s3-gw/internal/neofstest/tree"
 	bearertest "github.com/nspcc-dev/neofs-sdk-go/bearer/test"
 	"github.com/nspcc-dev/neofs-sdk-go/object"
 	oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
@@ -166,6 +167,7 @@ func prepareContext(t *testing.T, cachesConfig ...*CachesConfig) *testContext {
 	layerCfg := &Config{
 		Caches:      config,
 		AnonKey:     AnonymousKey{Key: key},
+		TreeService: treetest.NewTreeService(),
 	}
 
 	return &testContext{
@@ -196,9 +198,8 @@ func TestSimpleVersioning(t *testing.T) {
 	obj1Content2 := []byte("content obj1 v2")
 	obj1v2 := tc.putObject(obj1Content2)
 
-	objv2, buffer2 := tc.getObject(tc.obj, "", false)
+	_, buffer2 := tc.getObject(tc.obj, "", false)
 	require.Equal(t, obj1Content2, buffer2)
-	require.Contains(t, objv2.Headers[versionsAddAttr], obj1v1.ID.EncodeToString())
 
 	_, buffer1 := tc.getObject(tc.obj, obj1v1.ID.EncodeToString(), false)
 	require.Equal(t, obj1Content1, buffer1)
@@ -215,9 +216,8 @@ func TestSimpleNoVersioning(t *testing.T) {
 	obj1Content2 := []byte("content obj1 v2")
 	obj1v2 := tc.putObject(obj1Content2)
 
-	objv2, buffer2 := tc.getObject(tc.obj, "", false)
+	_, buffer2 := tc.getObject(tc.obj, "", false)
 	require.Equal(t, obj1Content2, buffer2)
-	require.Contains(t, objv2.Headers[versionsDelAttr], obj1v1.ID.EncodeToString())
 
 	tc.getObject(tc.obj, obj1v1.ID.EncodeToString(), true)
 	tc.checkListObjects(obj1v2.ID)

internal/neofs/tree.go

@@ -7,6 +7,7 @@ import (
 	"io"
 	"strconv"
 	"strings"
+	"time"
 
 	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
 	"github.com/nspcc-dev/neofs-s3-gw/api"
@@ -16,6 +17,7 @@ import (
 	"github.com/nspcc-dev/neofs-s3-gw/internal/neofs/services/tree"
 	cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
 	oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
+	"github.com/nspcc-dev/neofs-sdk-go/user"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
 )
@@ -42,7 +44,12 @@ const (
 	fileNameKV          = "FileName"
 	systemNameKV        = "SystemName"
 	isUnversionedKV     = "IsUnversioned"
+
+	// keys for delete marker nodes
 	isDeleteMarkerKV = "IdDeleteMarker"
+	filePathKV       = "FilePath"
+	ownerKV          = "Owner"
+	createdKV        = "Created"
 
 	settingsFileName  = "bucket-settings"
 	notifConfFileName = "bucket-notifications"
@@ -111,23 +118,50 @@ func (n *TreeNode) Get(key string) (string, bool) {
 	return value, ok
 }
 
-func newNodeVersion(node NodeResponse) (*layer.NodeVersion, error) {
+func newNodeVersion(node NodeResponse) (*data.NodeVersion, error) {
 	treeNode, err := newTreeNode(node)
 	if err != nil {
 		return nil, fmt.Errorf("invalid tree node: %w", err)
 	}
 
+	return newNodeVersionFromTreeNode(treeNode), nil
+}
+
+func newNodeVersionFromTreeNode(treeNode *TreeNode) *data.NodeVersion {
 	_, isUnversioned := treeNode.Get(isUnversionedKV)
 	_, isDeleteMarker := treeNode.Get(isDeleteMarkerKV)
 
-	return &layer.NodeVersion{
+	version := &data.NodeVersion{
-		BaseNodeVersion: layer.BaseNodeVersion{
+		BaseNodeVersion: data.BaseNodeVersion{
 			ID:        treeNode.ID,
 			OID:       treeNode.ObjID,
+			Timestamp: treeNode.TimeStamp,
 		},
 		IsUnversioned: isUnversioned,
-		IsDeleteMarker: isDeleteMarker,
+	}
-	}, nil
+
+	if isDeleteMarker {
+		filePath, _ := treeNode.Get(filePathKV)
+
+		var created time.Time
+		if createdStr, ok := treeNode.Get(createdKV); ok {
+			if utcMilli, err := strconv.ParseInt(createdStr, 10, 64); err == nil {
+				created = time.UnixMilli(utcMilli)
+			}
+		}
+
+		var owner user.ID
+		if ownerStr, ok := treeNode.Get(ownerKV); ok {
+			_ = owner.DecodeString(ownerStr)
+		}
+
+		version.DeleteMarker = &data.DeleteMarkerInfo{
+			FilePath: filePath,
+			Created:  created,
+			Owner:    owner,
+		}
+	}
+	return version
 }
 
 func (c *TreeClient) GetSettingsNode(ctx context.Context, cnrID *cid.ID) (*data.BucketSettings, error) {
@@ -240,11 +274,11 @@ func (c *TreeClient) DeleteBucketCORS(ctx context.Context, cnrID *cid.ID) (*oid.
 	return nil, nil
 }
 
-func (c *TreeClient) GetVersions(ctx context.Context, cnrID *cid.ID, filepath string) ([]*layer.NodeVersion, error) {
+func (c *TreeClient) GetVersions(ctx context.Context, cnrID *cid.ID, filepath string) ([]*data.NodeVersion, error) {
 	return c.getVersions(ctx, cnrID, versionTree, filepath, false)
 }
 
-func (c *TreeClient) GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*layer.NodeVersion, error) {
+func (c *TreeClient) GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*data.NodeVersion, error) {
 	meta := []string{oidKV, isUnversionedKV, isDeleteMarkerKV}
 	path := pathFromName(objectName)
 
@@ -266,20 +300,14 @@ func (c *TreeClient) GetLatestVersionsByPrefix(ctx context.Context, cnrID *cid.I
 	tailPrefix := path[len(path)-1]
 
 	if len(path) > 1 {
-		meta := []string{fileNameKV}
+		var err error
-
+		rootID, err = c.getPrefixNodeID(ctx, cnrID, path[:len(path)-1])
-		nodes, err := c.getNodes(ctx, cnrID, versionTree, fileNameKV, path[:len(path)-1], meta, true)
 		if err != nil {
-			return nil, err
+			if errors.Is(err, layer.ErrNodeNotFound) {
-		}
-		if len(nodes) == 0 {
 				return nil, nil
 			}
-		if len(nodes) != 1 {
+			return nil, err
-			return nil, layer.ErrNodeNotFound
 		}
-
-		rootID = nodes[0].NodeId
 	}
 
 	subTree, err := c.getSubTree(ctx, cnrID, versionTree, rootID, 1)
@@ -289,18 +317,46 @@ func (c *TreeClient) GetLatestVersionsByPrefix(ctx context.Context, cnrID *cid.I
 
 	var result []oid.ID
 	for _, node := range subTree {
-		if node.GetNodeId() != 0 && hasPrefix(node, tailPrefix) {
+		if node.GetNodeId() != rootID && hasPrefix(node, tailPrefix) {
-			latestNodes, err := c.getSubTreeLatestVersions(ctx, cnrID, node.GetNodeId())
+			latestNodes, err := c.getSubTreeVersions(ctx, cnrID, node.GetNodeId(), true)
 			if err != nil {
 				return nil, err
 			}
-			result = append(result, latestNodes...)
+
+			for _, latest := range latestNodes {
+				result = append(result, latest.OID)
+			}
 		}
 	}
 
 	return result, nil
 }
 
+func (c *TreeClient) getPrefixNodeID(ctx context.Context, cnrID *cid.ID, prefixPath []string) (uint64, error) {
+	meta := []string{fileNameKV, oidKV}
+
+	nodes, err := c.getNodes(ctx, cnrID, versionTree, fileNameKV, prefixPath, meta, false)
+	if err != nil {
+		return 0, err
+	}
+
+	var intermediateNodes []uint64
+	for _, node := range nodes {
+		if !hasOID(node) {
+			intermediateNodes = append(intermediateNodes, node.GetNodeId())
+		}
+	}
+
+	if len(intermediateNodes) == 0 {
+		return 0, layer.ErrNodeNotFound
+	}
+	if len(intermediateNodes) > 1 {
+		return 0, fmt.Errorf("found more than one intermediate nodes")
+	}
+
+	return intermediateNodes[0], nil
+}
+
 func hasPrefix(node *tree.GetSubTreeResponse_Body, prefix string) bool {
 	for _, kv := range node.GetMeta() {
 		if kv.GetKey() == fileNameKV {
@@ -311,7 +367,17 @@ func hasPrefix(node *tree.GetSubTreeResponse_Body, prefix string) bool {
 	return false
 }
 
-func (c *TreeClient) getSubTreeLatestVersions(ctx context.Context, cnrID *cid.ID, nodeID uint64) ([]oid.ID, error) {
+func hasOID(node *tree.GetNodeByPathResponse_Info) bool {
+	for _, kv := range node.GetMeta() {
+		if kv.GetKey() == oidKV {
+			return true
+		}
+	}
+
+	return false
+}
+
+func (c *TreeClient) getSubTreeVersions(ctx context.Context, cnrID *cid.ID, nodeID uint64, latestOnly bool) ([]*data.NodeVersion, error) {
 	subTree, err := c.getSubTree(ctx, cnrID, versionTree, nodeID, maxGetSubTreeDepth)
 	if err != nil {
 		return nil, err
@@ -319,10 +385,10 @@ func (c *TreeClient) getSubTreeLatestVersions(ctx context.Context, cnrID *cid.ID
 
 	var emptyOID oid.ID
 
-	latestVersions := make(map[string]*TreeNode, len(subTree))
+	versions := make(map[string][]*data.NodeVersion, len(subTree))
 	for _, node := range subTree {
 		treeNode, err := newTreeNode(node)
-		if err != nil || treeNode.ObjID.Equals(emptyOID) { // invalid OID attribute
+		if err != nil || treeNode.ObjID.Equals(emptyOID) { // invalid or empty OID attribute
 			continue
 		}
 		fileName, ok := treeNode.Get(fileNameKV)
@@ -331,18 +397,24 @@ func (c *TreeClient) getSubTreeLatestVersions(ctx context.Context, cnrID *cid.ID
 		}
 
 		key := formLatestNodeKey(node.GetParentId(), fileName)
-		latest, ok := latestVersions[key]
+		versionNodes, ok := versions[key]
-		if !ok || latest.TimeStamp <= treeNode.TimeStamp { // todo also compare oid
+		if !ok {
-			latestVersions[key] = treeNode
+			versionNodes = []*data.NodeVersion{newNodeVersionFromTreeNode(treeNode)}
-		}
+		} else if !latestOnly {
+			versionNodes = append(versionNodes, newNodeVersionFromTreeNode(treeNode))
+		} else if versionNodes[0].Timestamp <= treeNode.TimeStamp {
+			versionNodes[0] = newNodeVersionFromTreeNode(treeNode)
 		}
 
-	result := make([]oid.ID, 0, len(latestVersions))
+		versions[key] = versionNodes
-	for _, treeNode := range latestVersions {
+	}
-		if _, ok := treeNode.Get(isDeleteMarkerKV); ok {
+
+	result := make([]*data.NodeVersion, 0, len(versions)) // consider use len(subTree)
+	for _, version := range versions {
+		if latestOnly && version[0].DeleteMarker != nil {
 			continue
 		}
-		result = append(result, treeNode.ObjID)
+		result = append(result, version...)
 	}
 
 	return result, nil
@@ -352,7 +424,42 @@ func formLatestNodeKey(parentID uint64, fileName string) string {
 	return strconv.FormatUint(parentID, 10) + fileName
 }
 
-func (c *TreeClient) GetSystemVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*layer.BaseNodeVersion, error) {
+func (c *TreeClient) GetAllVersionsByPrefix(ctx context.Context, cnrID *cid.ID, prefix string) ([]*data.NodeVersion, error) {
+	var rootID uint64
+	path := strings.Split(prefix, separator)
+	tailPrefix := path[len(path)-1]
+
+	if len(path) > 1 {
+		var err error
+		rootID, err = c.getPrefixNodeID(ctx, cnrID, path[:len(path)-1])
+		if err != nil {
+			if errors.Is(err, layer.ErrNodeNotFound) {
+				return nil, nil
+			}
+			return nil, err
+		}
+	}
+
+	subTree, err := c.getSubTree(ctx, cnrID, versionTree, rootID, 1)
+	if err != nil {
+		return nil, err
+	}
+
+	var result []*data.NodeVersion
+	for _, node := range subTree {
+		if node.GetNodeId() != rootID && hasPrefix(node, tailPrefix) {
+			versions, err := c.getSubTreeVersions(ctx, cnrID, node.GetNodeId(), false)
+			if err != nil {
+				return nil, err
+			}
+			result = append(result, versions...)
+		}
+	}
+
+	return result, nil
+}
+
+func (c *TreeClient) GetSystemVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*data.BaseNodeVersion, error) {
 	meta := []string{oidKV}
 	path := pathFromName(objectName)
 
@@ -363,7 +470,7 @@ func (c *TreeClient) GetSystemVersion(ctx context.Context, cnrID *cid.ID, object
 	return &node.BaseNodeVersion, nil
 }
 
-func (c *TreeClient) getLatestVersion(ctx context.Context, cnrID *cid.ID, treeID, attrPath string, path, meta []string) (*layer.NodeVersion, error) {
+func (c *TreeClient) getLatestVersion(ctx context.Context, cnrID *cid.ID, treeID, attrPath string, path, meta []string) (*data.NodeVersion, error) {
 	nodes, err := c.getNodes(ctx, cnrID, treeID, attrPath, path, meta, true)
 	if err != nil {
 		if strings.Contains(err.Error(), "not found") {
@@ -379,11 +486,11 @@ func (c *TreeClient) getLatestVersion(ctx context.Context, cnrID *cid.ID, treeID
 	return newNodeVersion(nodes[0])
 }
 
-func (c *TreeClient) GetUnversioned(ctx context.Context, cnrID *cid.ID, filepath string) (*layer.NodeVersion, error) {
+func (c *TreeClient) GetUnversioned(ctx context.Context, cnrID *cid.ID, filepath string) (*data.NodeVersion, error) {
 	return c.getUnversioned(ctx, cnrID, versionTree, filepath)
 }
 
-func (c *TreeClient) getUnversioned(ctx context.Context, cnrID *cid.ID, treeID, filepath string) (*layer.NodeVersion, error) {
+func (c *TreeClient) getUnversioned(ctx context.Context, cnrID *cid.ID, treeID, filepath string) (*data.NodeVersion, error) {
 	nodes, err := c.getVersions(ctx, cnrID, treeID, filepath, true)
 	if err != nil {
 		return nil, err
@@ -400,12 +507,12 @@ func (c *TreeClient) getUnversioned(ctx context.Context, cnrID *cid.ID, treeID,
 	return nodes[0], nil
 }
 
-func (c *TreeClient) AddVersion(ctx context.Context, cnrID *cid.ID, filepath string, version *layer.NodeVersion) error {
+func (c *TreeClient) AddVersion(ctx context.Context, cnrID *cid.ID, filepath string, version *data.NodeVersion) error {
 	return c.addVersion(ctx, cnrID, versionTree, fileNameKV, filepath, version)
 }
 
-func (c *TreeClient) AddSystemVersion(ctx context.Context, cnrID *cid.ID, filepath string, version *layer.BaseNodeVersion) error {
+func (c *TreeClient) AddSystemVersion(ctx context.Context, cnrID *cid.ID, filepath string, version *data.BaseNodeVersion) error {
-	newVersion := &layer.NodeVersion{
+	newVersion := &data.NodeVersion{
 		BaseNodeVersion: *version,
 		IsUnversioned:   true,
 	}
@@ -428,15 +535,18 @@ func (c *TreeClient) Close() error {
 	return nil
 }
 
-func (c *TreeClient) addVersion(ctx context.Context, cnrID *cid.ID, treeID, attrPath, filepath string, version *layer.NodeVersion) error {
+func (c *TreeClient) addVersion(ctx context.Context, cnrID *cid.ID, treeID, attrPath, filepath string, version *data.NodeVersion) error {
 	path := pathFromName(filepath)
 	meta := map[string]string{
 		oidKV:    version.OID.EncodeToString(),
 		attrPath: path[len(path)-1],
 	}
 
-	if version.IsDeleteMarker {
+	if version.DeleteMarker != nil {
 		meta[isDeleteMarkerKV] = "true"
+		meta[filePathKV] = version.DeleteMarker.FilePath
+		meta[ownerKV] = version.DeleteMarker.Owner.EncodeToString()
+		meta[createdKV] = strconv.FormatInt(version.DeleteMarker.Created.UTC().UnixMilli(), 10)
 	}
 
 	if version.IsUnversioned {
@@ -460,7 +570,7 @@ func (c *TreeClient) addVersion(ctx context.Context, cnrID *cid.ID, treeID, attr
 	return c.addNodeByPath(ctx, cnrID, treeID, path[:len(path)-1], meta)
 }
 
-func (c *TreeClient) getVersions(ctx context.Context, cnrID *cid.ID, treeID, filepath string, onlyUnversioned bool) ([]*layer.NodeVersion, error) {
+func (c *TreeClient) getVersions(ctx context.Context, cnrID *cid.ID, treeID, filepath string, onlyUnversioned bool) ([]*data.NodeVersion, error) {
 	keysToReturn := []string{oidKV, isUnversionedKV, isDeleteMarkerKV}
 	path := pathFromName(filepath)
 	nodes, err := c.getNodes(ctx, cnrID, treeID, fileNameKV, path, keysToReturn, false)
@@ -471,7 +581,7 @@ func (c *TreeClient) getVersions(ctx context.Context, cnrID *cid.ID, treeID, fil
 		return nil, fmt.Errorf("couldn't get nodes: %w", err)
 	}
 
-	result := make([]*layer.NodeVersion, 0, len(nodes))
+	result := make([]*data.NodeVersion, 0, len(nodes))
 	for _, node := range nodes {
 		nodeVersion, err := newNodeVersion(node)
 		if err != nil {

internal/neofstest/tree/tree_mock.go

@@ -2,25 +2,28 @@ package tree
 
 import (
 	"context"
+	"errors"
 	"sort"
+	"strings"
 
 	"github.com/nspcc-dev/neofs-s3-gw/api/data"
-	"github.com/nspcc-dev/neofs-s3-gw/api/layer"
 	cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
 	oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
 )
 
 type TreeServiceMock struct {
 	settings map[string]*data.BucketSettings
-	versions map[string]map[string][]*layer.NodeVersion
+	versions map[string]map[string][]*data.NodeVersion
-	system   map[string]map[string]*layer.BaseNodeVersion
+	system   map[string]map[string]*data.BaseNodeVersion
 }
 
+var ErrNodeNotFound = errors.New("not found")
+
 func NewTreeService() *TreeServiceMock {
 	return &TreeServiceMock{
 		settings: make(map[string]*data.BucketSettings),
-		versions: make(map[string]map[string][]*layer.NodeVersion),
+		versions: make(map[string]map[string][]*data.NodeVersion),
-		system:   make(map[string]map[string]*layer.BaseNodeVersion),
+		system:   make(map[string]map[string]*data.BaseNodeVersion),
 	}
 }
 
@@ -32,7 +35,7 @@ func (t *TreeServiceMock) PutSettingsNode(_ context.Context, id *cid.ID, setting
 func (t *TreeServiceMock) GetSettingsNode(_ context.Context, id *cid.ID) (*data.BucketSettings, error) {
 	settings, ok := t.settings[id.EncodeToString()]
 	if !ok {
-		return nil, layer.ErrNodeNotFound
+		return nil, ErrNodeNotFound
 	}
 
 	return settings, nil
@@ -58,19 +61,29 @@ func (t *TreeServiceMock) DeleteBucketCORS(ctx context.Context, cnrID *cid.ID) (
 	panic("implement me")
 }
 
-func (t *TreeServiceMock) GetVersions(ctx context.Context, cnrID *cid.ID, objectName string) ([]*layer.NodeVersion, error) {
+func (t *TreeServiceMock) GetVersions(_ context.Context, cnrID *cid.ID, objectName string) ([]*data.NodeVersion, error) {
-	panic("implement me")
-}
-
-func (t *TreeServiceMock) GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*layer.NodeVersion, error) {
 	cnrVersionsMap, ok := t.versions[cnrID.EncodeToString()]
 	if !ok {
-		return nil, layer.ErrNodeNotFound
+		return nil, ErrNodeNotFound
 	}
 
 	versions, ok := cnrVersionsMap[objectName]
 	if !ok {
-		return nil, layer.ErrNodeNotFound
+		return nil, ErrNodeNotFound
+	}
+
+	return versions, nil
+}
+
+func (t *TreeServiceMock) GetLatestVersion(ctx context.Context, cnrID *cid.ID, objectName string) (*data.NodeVersion, error) {
+	cnrVersionsMap, ok := t.versions[cnrID.EncodeToString()]
+	if !ok {
+		return nil, ErrNodeNotFound
+	}
+
+	versions, ok := cnrVersionsMap[objectName]
+	if !ok {
+		return nil, ErrNodeNotFound
 	}
 
 	sort.Slice(versions, func(i, j int) bool {
@@ -81,21 +94,42 @@ func (t *TreeServiceMock) GetLatestVersion(ctx context.Context, cnrID *cid.ID, o
 		return versions[len(versions)-1], nil
 	}
 
-	return nil, layer.ErrNodeNotFound
+	return nil, ErrNodeNotFound
 }
 
-func (t *TreeServiceMock) GetLatestVersionsByPrefix(ctx context.Context, cnrID *cid.ID, prefix string) ([]oid.ID, error) {
+func (t *TreeServiceMock) GetLatestVersionsByPrefix(_ context.Context, cnrID *cid.ID, prefix string) ([]oid.ID, error) {
-	panic("implement me")
-}
-
-func (t *TreeServiceMock) GetUnversioned(ctx context.Context, cnrID *cid.ID, objectName string) (*layer.NodeVersion, error) {
-	panic("implement me")
-}
-
-func (t *TreeServiceMock) AddVersion(_ context.Context, cnrID *cid.ID, objectName string, newVersion *layer.NodeVersion) error {
 	cnrVersionsMap, ok := t.versions[cnrID.EncodeToString()]
 	if !ok {
-		t.versions[cnrID.EncodeToString()] = map[string][]*layer.NodeVersion{
+		return nil, ErrNodeNotFound
+	}
+
+	var result []oid.ID
+
+	for key, versions := range cnrVersionsMap {
+		if !strings.HasPrefix(key, prefix) {
+			continue
+		}
+
+		sort.Slice(versions, func(i, j int) bool {
+			return versions[i].ID < versions[j].ID
+		})
+
+		if len(versions) != 0 {
+			result = append(result, versions[len(versions)-1].OID)
+		}
+	}
+
+	return result, nil
+}
+
+func (t *TreeServiceMock) GetUnversioned(ctx context.Context, cnrID *cid.ID, objectName string) (*data.NodeVersion, error) {
+	panic("implement me")
+}
+
+func (t *TreeServiceMock) AddVersion(_ context.Context, cnrID *cid.ID, objectName string, newVersion *data.NodeVersion) error {
+	cnrVersionsMap, ok := t.versions[cnrID.EncodeToString()]
+	if !ok {
+		t.versions[cnrID.EncodeToString()] = map[string][]*data.NodeVersion{
 			objectName: {newVersion},
 		}
 		return nil
@@ -103,7 +137,7 @@ func (t *TreeServiceMock) AddVersion(_ context.Context, cnrID *cid.ID, objectNam
 
 	versions, ok := cnrVersionsMap[objectName]
 	if !ok {
-		cnrVersionsMap[objectName] = []*layer.NodeVersion{newVersion}
+		cnrVersionsMap[objectName] = []*data.NodeVersion{newVersion}
 		return nil
 	}
 
@@ -115,7 +149,19 @@ func (t *TreeServiceMock) AddVersion(_ context.Context, cnrID *cid.ID, objectNam
 		newVersion.ID = versions[len(versions)-1].ID + 1
 	}
 
-	cnrVersionsMap[objectName] = append(versions, newVersion)
+	result := versions
+
+	if newVersion.IsUnversioned {
+		result = make([]*data.NodeVersion, 0, len(versions))
+		for _, node := range versions {
+			if !node.IsUnversioned {
+				result = append(result, node)
+			}
+
+		}
+	}
+
+	cnrVersionsMap[objectName] = append(result, newVersion)
 
 	return nil
 }
@@ -124,10 +170,10 @@ func (t *TreeServiceMock) RemoveVersion(ctx context.Context, cnrID *cid.ID, node
 	panic("implement me")
 }
 
-func (t *TreeServiceMock) AddSystemVersion(_ context.Context, cnrID *cid.ID, objectName string, newVersion *layer.BaseNodeVersion) error {
+func (t *TreeServiceMock) AddSystemVersion(_ context.Context, cnrID *cid.ID, objectName string, newVersion *data.BaseNodeVersion) error {
 	cnrSystemMap, ok := t.system[cnrID.EncodeToString()]
 	if !ok {
-		t.system[cnrID.EncodeToString()] = map[string]*layer.BaseNodeVersion{
+		t.system[cnrID.EncodeToString()] = map[string]*data.BaseNodeVersion{
 			objectName: newVersion,
 		}
 		return nil
@@ -138,15 +184,15 @@ func (t *TreeServiceMock) AddSystemVersion(_ context.Context, cnrID *cid.ID, obj
 	return nil
 }
 
-func (t *TreeServiceMock) GetSystemVersion(_ context.Context, cnrID *cid.ID, objectName string) (*layer.BaseNodeVersion, error) {
+func (t *TreeServiceMock) GetSystemVersion(_ context.Context, cnrID *cid.ID, objectName string) (*data.BaseNodeVersion, error) {
 	cnrSystemMap, ok := t.system[cnrID.EncodeToString()]
 	if !ok {
-		return nil, layer.ErrNodeNotFound
+		return nil, ErrNodeNotFound
 	}
 
 	sysVersion, ok := cnrSystemMap[objectName]
 	if !ok {
-		return nil, layer.ErrNodeNotFound
+		return nil, ErrNodeNotFound
 	}
 
 	return sysVersion, nil
@@ -155,3 +201,7 @@ func (t *TreeServiceMock) GetSystemVersion(_ context.Context, cnrID *cid.ID, obj
 func (t *TreeServiceMock) RemoveSystemVersion(ctx context.Context, cnrID *cid.ID, nodeID uint64) error {
 	panic("implement me")
 }
+
+func (t *TreeServiceMock) GetAllVersionsByPrefix(ctx context.Context, cnrID *cid.ID, prefix string) ([]*data.NodeVersion, error) {
+	panic("implement me")
+}