Merge pull request #207 from KirillovDenis/feature/122-poc_versioning

[#122] Add enabling versioning

api/cache/buckets.go

@@ -0,0 +1,77 @@
+package cache
+
+import (
+	"time"
+
+	"github.com/bluele/gcache"
+	cid "github.com/nspcc-dev/neofs-api-go/pkg/container/id"
+	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
+)
+
+type (
+	// BucketCache provides interface for lru cache for objects.
+	BucketCache interface {
+		Get(key string) *BucketInfo
+		Put(bkt *BucketInfo) error
+		Delete(key string) bool
+	}
+
+	// BucketInfo stores basic bucket data.
+	BucketInfo struct {
+		Name     string
+		CID      *cid.ID
+		Owner    *owner.ID
+		Created  time.Time
+		BasicACL uint32
+	}
+
+	// GetBucketCache contains cache with objects and lifetime of cache entries.
+	GetBucketCache struct {
+		cache    gcache.Cache
+		lifetime time.Duration
+	}
+)
+
+// NewBucketCache creates an object of BucketCache.
+func NewBucketCache(cacheSize int, lifetime time.Duration) *GetBucketCache {
+	gc := gcache.New(cacheSize).LRU().Build()
+
+	return &GetBucketCache{cache: gc, lifetime: lifetime}
+}
+
+// Get returns cached object.
+func (o *GetBucketCache) Get(key string) *BucketInfo {
+	entry, err := o.cache.Get(key)
+	if err != nil {
+		return nil
+	}
+
+	result, ok := entry.(*BucketInfo)
+	if !ok {
+		return nil
+	}
+
+	return result
+}
+
+// Put puts an object to cache.
+func (o *GetBucketCache) Put(bkt *BucketInfo) error {
+	return o.cache.SetWithExpire(bkt.Name, bkt, o.lifetime)
+}
+
+// Delete deletes an object from cache.
+func (o *GetBucketCache) Delete(key string) bool {
+	return o.cache.Remove(key)
+}
+
+const bktVersionSettingsObject = ".s3-versioning-settings"
+
+// SettingsObjectName is system name for bucket settings file.
+func (b *BucketInfo) SettingsObjectName() string {
+	return bktVersionSettingsObject
+}
+
+// SettingsObjectKey is key to use in SystemCache.
+func (b *BucketInfo) SettingsObjectKey() string {
+	return b.Name + bktVersionSettingsObject
+}

api/cache/names.go

@@ -0,0 +1,57 @@
+package cache
+
+import (
+	"time"
+
+	"github.com/bluele/gcache"
+	"github.com/nspcc-dev/neofs-api-go/pkg/object"
+)
+
+// ObjectsNameCache provides interface for lru cache for objects.
+// This cache contains mapping nice name to object addresses.
+// Key is bucketName+objectName.
+type ObjectsNameCache interface {
+	Get(key string) *object.Address
+	Put(key string, address *object.Address) error
+	Delete(key string) bool
+}
+
+type (
+	// NameCache contains cache with objects and lifetime of cache entries.
+	NameCache struct {
+		cache    gcache.Cache
+		lifetime time.Duration
+	}
+)
+
+// NewObjectsNameCache creates an object of ObjectsNameCache.
+func NewObjectsNameCache(cacheSize int, lifetime time.Duration) *NameCache {
+	gc := gcache.New(cacheSize).LRU().Build()
+
+	return &NameCache{cache: gc, lifetime: lifetime}
+}
+
+// Get returns cached object.
+func (o *NameCache) Get(key string) *object.Address {
+	entry, err := o.cache.Get(key)
+	if err != nil {
+		return nil
+	}
+
+	result, ok := entry.(*object.Address)
+	if !ok {
+		return nil
+	}
+
+	return result
+}
+
+// Put puts an object to cache.
+func (o *NameCache) Put(key string, address *object.Address) error {
+	return o.cache.SetWithExpire(key, address, o.lifetime)
+}
+
+// Delete deletes an object from cache.
+func (o *NameCache) Delete(key string) bool {
+	return o.cache.Remove(key)
+}

api/cache/object_cache.go

@@ -10,7 +10,7 @@ import (
 // ObjectsCache provides interface for lru cache for objects.
 type ObjectsCache interface {
 	Get(address *object.Address) *object.Object
-	Put(address *object.Address, obj object.Object) error
+	Put(obj object.Object) error
 	Delete(address *object.Address) bool
 }
 
@@ -52,8 +52,8 @@ func (o *ObjectHeadersCache) Get(address *object.Address) *object.Object {
 }
 
 // Put puts an object to cache.
-func (o *ObjectHeadersCache) Put(address *object.Address, obj object.Object) error {
-	return o.cache.SetWithExpire(address.String(), obj, o.lifetime)
+func (o *ObjectHeadersCache) Put(obj object.Object) error {
+	return o.cache.SetWithExpire(obj.ContainerID().String()+"/"+obj.ID().String(), obj, o.lifetime)
 }
 
 // Delete deletes an object from cache.

api/cache/object_cache_test.go

@@ -4,6 +4,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/nspcc-dev/neofs-api-go/pkg/object"
 	objecttest "github.com/nspcc-dev/neofs-api-go/pkg/object/test"
 	"github.com/stretchr/testify/require"
 )
@@ -14,23 +15,23 @@ const (
 )
 
 func TestCache(t *testing.T) {
-	var (
-		address = objecttest.Address()
-		object  = objecttest.Object()
-	)
+	obj := objecttest.Object()
+	address := object.NewAddress()
+	address.SetContainerID(obj.ContainerID())
+	address.SetObjectID(obj.ID())
 
 	t.Run("check get", func(t *testing.T) {
 		cache := New(cachesize, lifetime)
-		err := cache.Put(address, *object)
+		err := cache.Put(*obj)
 		require.NoError(t, err)
 
 		actual := cache.Get(address)
-		require.Equal(t, object, actual)
+		require.Equal(t, obj, actual)
 	})
 
 	t.Run("check delete", func(t *testing.T) {
 		cache := New(cachesize, lifetime)
-		err := cache.Put(address, *object)
+		err := cache.Put(*obj)
 		require.NoError(t, err)
 
 		cache.Delete(address)

api/cache/system.go

@@ -0,0 +1,57 @@
+package cache
+
+import (
+	"time"
+
+	"github.com/bluele/gcache"
+	"github.com/nspcc-dev/neofs-api-go/pkg/object"
+)
+
+type (
+	// SystemCache provides interface for lru cache for objects.
+	// This cache contains "system" objects (bucket versioning settings, tagging object etc.).
+	// Key is bucketName+systemFileName.
+	SystemCache interface {
+		Get(key string) *object.Object
+		Put(key string, obj *object.Object) error
+		Delete(key string) bool
+	}
+
+	// SysCache contains cache with objects and lifetime of cache entries.
+	SysCache struct {
+		cache    gcache.Cache
+		lifetime time.Duration
+	}
+)
+
+// NewSystemCache creates an object of SystemCache.
+func NewSystemCache(cacheSize int, lifetime time.Duration) *SysCache {
+	gc := gcache.New(cacheSize).LRU().Build()
+
+	return &SysCache{cache: gc, lifetime: lifetime}
+}
+
+// Get returns cached object.
+func (o *SysCache) Get(key string) *object.Object {
+	entry, err := o.cache.Get(key)
+	if err != nil {
+		return nil
+	}
+
+	result, ok := entry.(*object.Object)
+	if !ok {
+		return nil
+	}
+
+	return result
+}
+
+// Put puts an object to cache.
+func (o *SysCache) Put(key string, obj *object.Object) error {
+	return o.cache.SetWithExpire(key, obj, o.lifetime)
+}
+
+// Delete deletes an object from cache.
+func (o *SysCache) Delete(key string) bool {
+	return o.cache.Remove(key)
+}

api/errors/errors.go

@@ -66,6 +66,7 @@ const (
 	ErrNoSuchKey
 	ErrNoSuchUpload
 	ErrNoSuchVersion
+	ErrInvalidVersion
 	ErrNotImplemented
 	ErrPreconditionFailed
 	ErrNotModified
@@ -529,6 +530,12 @@ var errorCodes = errorCodeMap{
 		Description:    "Indicates that the version ID specified in the request does not match an existing version.",
 		HTTPStatusCode: http.StatusNotFound,
 	},
+	ErrInvalidVersion: {
+		ErrCode:        ErrInvalidVersion,
+		Code:           "InvalidArgument",
+		Description:    "Invalid version id specified",
+		HTTPStatusCode: http.StatusBadRequest,
+	},
 	ErrNotImplemented: {
 		ErrCode:        ErrNotImplemented,
 		Code:           "NotImplemented",
@@ -1917,26 +1924,18 @@ func GetAPIError(code ErrorCode) Error {
 	return errorCodes.toAPIErr(ErrInternalError)
 }
 
-// GenericError - generic object layer error.
-type GenericError struct {
-	Bucket string
-	Object string
+// ObjectError - error that linked to specific object.
+type ObjectError struct {
+	Err     error
+	Object  string
+	Version string
 }
 
-// ObjectAlreadyExists object already exists.
-// This type should be removed when s3-gw will support versioning.
-type ObjectAlreadyExists GenericError
-
-func (e ObjectAlreadyExists) Error() string {
-	return "Object: " + e.Bucket + "#" + e.Object + " already exists"
+func (e ObjectError) Error() string {
+	return fmt.Sprintf("%s (%s:%s)", e.Err, e.Object, e.Version)
 }
 
-// DeleteError - returns when cant remove object.
-type DeleteError struct {
-	Err    error
-	Object string
-}
-
-func (e DeleteError) Error() string {
-	return fmt.Sprintf("%s (%s)", e.Err, e.Object)
+// ObjectVersion get "object:version" string.
+func (e ObjectError) ObjectVersion() string {
+	return e.Object + ":" + e.Version
 }

api/handler/acl.go

@@ -13,6 +13,7 @@ import (
 	"github.com/nspcc-dev/neofs-api-go/pkg/acl/eacl"
 	"github.com/nspcc-dev/neofs-api-go/pkg/object"
 	"github.com/nspcc-dev/neofs-s3-gw/api"
+	"github.com/nspcc-dev/neofs-s3-gw/api/cache"
 	"github.com/nspcc-dev/neofs-s3-gw/api/errors"
 	"github.com/nspcc-dev/neofs-s3-gw/api/layer"
 )
@@ -239,7 +240,13 @@ func (h *handler) PutObjectACLHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if _, err = h.obj.GetObjectInfo(r.Context(), reqInfo.BucketName, reqInfo.ObjectName); err != nil {
+	p := &layer.HeadObjectParams{
+		Bucket:    reqInfo.BucketName,
+		Object:    reqInfo.ObjectName,
+		VersionID: reqInfo.URL.Query().Get(api.QueryVersionID),
+	}
+
+	if _, err = h.obj.GetObjectInfo(r.Context(), p); err != nil {
 		h.logAndSendError(w, "could not get object info", reqInfo, err)
 		return
 	}
@@ -273,7 +280,7 @@ func (h *handler) GetBucketPolicyHandler(w http.ResponseWriter, r *http.Request)
 	}
 }
 
-func checkOwner(info *layer.BucketInfo, owner string) error {
+func checkOwner(info *cache.BucketInfo, owner string) error {
 	if owner == "" {
 		return nil
 	}

api/handler/copy.go

@@ -32,10 +32,11 @@ func path2BucketObject(path string) (bucket, prefix string) {
 func (h *handler) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
 	var (
 		err      error
-		inf      *layer.ObjectInfo
+		info     *layer.ObjectInfo
 		metadata map[string]string
 
-		reqInfo = api.GetReqInfo(r.Context())
+		reqInfo   = api.GetReqInfo(r.Context())
+		versionID string
 	)
 
 	src := r.Header.Get("X-Amz-Copy-Source")
@@ -45,14 +46,7 @@ func (h *handler) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
 	// of the version ID to null. If you have enabled versioning, Amazon S3 assigns a
 	// unique version ID value for the object.
 	if u, err := url.Parse(src); err == nil {
-		// Check if versionId query param was added, if yes then check if
-		// its non "null" value, we should error out since we do not support
-		// any versions other than "null".
-		if vid := u.Query().Get("versionId"); vid != "" && vid != "null" {
-			h.logAndSendError(w, "no such version", reqInfo, errors.GetAPIError(errors.ErrNoSuchVersion))
-			return
-		}
-
+		versionID = u.Query().Get(api.QueryVersionID)
 		src = u.Path
 	}
 
@@ -63,6 +57,11 @@ func (h *handler) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
 		h.logAndSendError(w, "could not parse request params", reqInfo, err)
 		return
 	}
+	p := &layer.HeadObjectParams{
+		Bucket:    srcBucket,
+		Object:    srcObject,
+		VersionID: versionID,
+	}
 
 	if args.MetadataDirective == replaceMetadataDirective {
 		metadata = parseMetadata(r)
@@ -80,47 +79,46 @@ func (h *handler) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if inf, err = h.obj.GetObjectInfo(r.Context(), srcBucket, srcObject); err != nil {
+	if info, err = h.obj.GetObjectInfo(r.Context(), p); err != nil {
 		h.logAndSendError(w, "could not find object", reqInfo, err)
 		return
 	}
 
-	if err = checkPreconditions(inf, args.Conditional); err != nil {
+	if err = checkPreconditions(info, args.Conditional); err != nil {
 		h.logAndSendError(w, "precondition failed", reqInfo, errors.GetAPIError(errors.ErrPreconditionFailed))
 		return
 	}
 
 	if metadata == nil {
-		if len(inf.ContentType) > 0 {
-			inf.Headers[api.ContentType] = inf.ContentType
+		if len(info.ContentType) > 0 {
+			info.Headers[api.ContentType] = info.ContentType
 		}
-		metadata = inf.Headers
+		metadata = info.Headers
 	} else if contentType := r.Header.Get(api.ContentType); len(contentType) > 0 {
 		metadata[api.ContentType] = contentType
 	}
 
 	params := &layer.CopyObjectParams{
-		SrcBucket: srcBucket,
+		SrcObject: info,
 		DstBucket: reqInfo.BucketName,
-		SrcObject: srcObject,
 		DstObject: reqInfo.ObjectName,
-		SrcSize:   inf.Size,
+		SrcSize:   info.Size,
 		Header:    metadata,
 	}
 
 	additional := []zap.Field{zap.String("src_bucket_name", srcBucket), zap.String("src_object_name", srcObject)}
-	if inf, err = h.obj.CopyObject(r.Context(), params); err != nil {
+	if info, err = h.obj.CopyObject(r.Context(), params); err != nil {
 		h.logAndSendError(w, "couldn't copy object", reqInfo, err, additional...)
 		return
-	} else if err = api.EncodeToResponse(w, &CopyObjectResponse{LastModified: inf.Created.Format(time.RFC3339), ETag: inf.HashSum}); err != nil {
+	} else if err = api.EncodeToResponse(w, &CopyObjectResponse{LastModified: info.Created.Format(time.RFC3339), ETag: info.HashSum}); err != nil {
 		h.logAndSendError(w, "something went wrong", reqInfo, err, additional...)
 		return
 	}
 
 	h.log.Info("object is copied",
-		zap.String("bucket", inf.Bucket),
-		zap.String("object", inf.Name),
-		zap.Stringer("object_id", inf.ID()))
+		zap.String("bucket", info.Bucket),
+		zap.String("object", info.Name),
+		zap.Stringer("object_id", info.ID()))
 }
 
 func parseCopyObjectArgs(headers http.Header) (*copyObjectArgs, error) {

api/handler/delete.go

@@ -8,6 +8,7 @@ import (
 	"github.com/nspcc-dev/neofs-s3-gw/api/errors"
 	"github.com/nspcc-dev/neofs-s3-gw/api/layer"
 	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
 )
 
 // DeleteObjectsRequest - xml carrying the object key names which needs to be deleted.
@@ -21,13 +22,15 @@ type DeleteObjectsRequest struct {
 // ObjectIdentifier carries key name for the object to delete.
 type ObjectIdentifier struct {
 	ObjectName string `xml:"Key"`
+	VersionID  string `xml:"VersionId,omitempty"`
 }
 
 // DeleteError structure.
 type DeleteError struct {
-	Code    string
-	Message string
-	Key     string
+	Code      string
+	Message   string
+	Key       string
+	VersionID string `xml:"versionId,omitempty"`
 }
 
 // DeleteObjectsResponse container for multiple object deletes.
@@ -43,18 +46,22 @@ type DeleteObjectsResponse struct {
 
 func (h *handler) DeleteObjectHandler(w http.ResponseWriter, r *http.Request) {
 	reqInfo := api.GetReqInfo(r.Context())
+	versionedObject := []*layer.VersionedObject{{
+		Name:      reqInfo.ObjectName,
+		VersionID: reqInfo.URL.Query().Get(api.QueryVersionID),
+	}}
 
 	if err := h.checkBucketOwner(r, reqInfo.BucketName); err != nil {
 		h.logAndSendError(w, "expected owner doesn't match", reqInfo, err)
 		return
 	}
 
-	if err := h.obj.DeleteObject(r.Context(), reqInfo.BucketName, reqInfo.ObjectName); err != nil {
+	if errs := h.obj.DeleteObjects(r.Context(), reqInfo.BucketName, versionedObject); len(errs) != 0 && errs[0] != nil {
 		h.log.Error("could not delete object",
 			zap.String("request_id", reqInfo.RequestID),
 			zap.String("bucket_name", reqInfo.BucketName),
 			zap.String("object_name", reqInfo.ObjectName),
-			zap.Error(err))
+			zap.Error(errs[0]))
 
 		// Ignore delete errors:
 
@@ -93,11 +100,15 @@ func (h *handler) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *http.Re
 		return
 	}
 
-	removed := make(map[string]struct{})
-	toRemove := make([]string, 0, len(requested.Objects))
+	removed := make(map[string]*layer.VersionedObject)
+	toRemove := make([]*layer.VersionedObject, 0, len(requested.Objects))
 	for _, obj := range requested.Objects {
-		removed[obj.ObjectName] = struct{}{}
-		toRemove = append(toRemove, obj.ObjectName)
+		versionedObj := &layer.VersionedObject{
+			Name:      obj.ObjectName,
+			VersionID: obj.VersionID,
+		}
+		toRemove = append(toRemove, versionedObj)
+		removed[versionedObj.String()] = versionedObj
 	}
 
 	response := &DeleteObjectsResponse{
@@ -110,35 +121,45 @@ func (h *handler) DeleteMultipleObjectsHandler(w http.ResponseWriter, r *http.Re
 		return
 	}
 
+	marshaler := zapcore.ArrayMarshalerFunc(func(encoder zapcore.ArrayEncoder) error {
+		for _, obj := range toRemove {
+			encoder.AppendString(obj.String())
+		}
+		return nil
+	})
+
 	if errs := h.obj.DeleteObjects(r.Context(), reqInfo.BucketName, toRemove); errs != nil && !requested.Quiet {
 		additional := []zap.Field{
-			zap.Strings("objects_name", toRemove),
+			zap.Array("objects", marshaler),
 			zap.Errors("errors", errs),
 		}
 		h.logAndSendError(w, "could not delete objects", reqInfo, nil, additional...)
 
 		for _, e := range errs {
-			if err, ok := e.(*errors.DeleteError); ok {
+			if err, ok := e.(*errors.ObjectError); ok {
 				code := "BadRequest"
-				desc := err.Error()
+				if s3err, ok := err.Err.(errors.Error); ok {
+					code = s3err.Code
+				}
 
 				response.Errors = append(response.Errors, DeleteError{
-					Code:    code,
-					Message: desc,
-					Key:     err.Object,
+					Code:      code,
+					Message:   err.Error(),
+					Key:       err.Object,
+					VersionID: err.Version,
 				})
 
-				delete(removed, err.Object)
+				delete(removed, err.ObjectVersion())
 			}
 		}
 	}
 
-	for key := range removed {
-		response.DeletedObjects = append(response.DeletedObjects, ObjectIdentifier{ObjectName: key})
+	for _, val := range removed {
+		response.DeletedObjects = append(response.DeletedObjects, ObjectIdentifier{ObjectName: val.Name, VersionID: val.VersionID})
 	}
 
 	if err := api.EncodeToResponse(w, response); err != nil {
-		h.logAndSendError(w, "could not write response", reqInfo, err, zap.Strings("objects_name", toRemove))
+		h.logAndSendError(w, "could not write response", reqInfo, err, zap.Array("objects", marshaler))
 		return
 	}
 }

api/handler/get.go

@@ -72,6 +72,7 @@ func writeHeaders(h http.Header, info *layer.ObjectInfo) {
 	h.Set(api.LastModified, info.Created.UTC().Format(http.TimeFormat))
 	h.Set(api.ContentLength, strconv.FormatInt(info.Size, 10))
 	h.Set(api.ETag, info.HashSum)
+	h.Set(api.AmzVersionID, info.ID().String())
 
 	for key, val := range info.Headers {
 		h[api.MetadataPrefix+key] = []string{val}
@@ -81,7 +82,7 @@ func writeHeaders(h http.Header, info *layer.ObjectInfo) {
 func (h *handler) GetObjectHandler(w http.ResponseWriter, r *http.Request) {
 	var (
 		err    error
-		inf    *layer.ObjectInfo
+		info   *layer.ObjectInfo
 		params *layer.RangeParams
 
 		reqInfo = api.GetReqInfo(r.Context())
@@ -98,47 +99,53 @@ func (h *handler) GetObjectHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if inf, err = h.obj.GetObjectInfo(r.Context(), reqInfo.BucketName, reqInfo.ObjectName); err != nil {
+	p := &layer.HeadObjectParams{
+		Bucket:    reqInfo.BucketName,
+		Object:    reqInfo.ObjectName,
+		VersionID: reqInfo.URL.Query().Get(api.QueryVersionID),
+	}
+
+	if info, err = h.obj.GetObjectInfo(r.Context(), p); err != nil {
 		h.logAndSendError(w, "could not find object", reqInfo, err)
 		return
 	}
 
-	if err = checkPreconditions(inf, args.Conditional); err != nil {
+	if err = checkPreconditions(info, args.Conditional); err != nil {
 		h.logAndSendError(w, "precondition failed", reqInfo, err)
 		return
 	}
 
-	if params, err = fetchRangeHeader(r.Header, uint64(inf.Size)); err != nil {
+	if params, err = fetchRangeHeader(r.Header, uint64(info.Size)); err != nil {
 		h.logAndSendError(w, "could not parse range header", reqInfo, err)
 		return
 	}
-	writeHeaders(w.Header(), inf)
+	writeHeaders(w.Header(), info)
 	if params != nil {
-		writeRangeHeaders(w, params, inf.Size)
+		writeRangeHeaders(w, params, info.Size)
 	}
 
 	getParams := &layer.GetObjectParams{
-		Bucket: inf.Bucket,
-		Object: inf.Name,
-		Writer: w,
-		Range:  params,
+		ObjectInfo: info,
+		Writer:     w,
+		Range:      params,
+		VersionID:  p.VersionID,
 	}
 	if err = h.obj.GetObject(r.Context(), getParams); err != nil {
 		h.logAndSendError(w, "could not get object", reqInfo, err)
 	}
 }
 
-func checkPreconditions(inf *layer.ObjectInfo, args *conditionalArgs) error {
-	if len(args.IfMatch) > 0 && args.IfMatch != inf.HashSum {
+func checkPreconditions(info *layer.ObjectInfo, args *conditionalArgs) error {
+	if len(args.IfMatch) > 0 && args.IfMatch != info.HashSum {
 		return errors.GetAPIError(errors.ErrPreconditionFailed)
 	}
-	if len(args.IfNoneMatch) > 0 && args.IfNoneMatch == inf.HashSum {
+	if len(args.IfNoneMatch) > 0 && args.IfNoneMatch == info.HashSum {
 		return errors.GetAPIError(errors.ErrNotModified)
 	}
-	if args.IfModifiedSince != nil && inf.Created.Before(*args.IfModifiedSince) {
+	if args.IfModifiedSince != nil && info.Created.Before(*args.IfModifiedSince) {
 		return errors.GetAPIError(errors.ErrNotModified)
 	}
-	if args.IfUnmodifiedSince != nil && inf.Created.After(*args.IfUnmodifiedSince) {
+	if args.IfUnmodifiedSince != nil && info.Created.After(*args.IfUnmodifiedSince) {
 		if len(args.IfMatch) == 0 {
 			return errors.GetAPIError(errors.ErrPreconditionFailed)
 		}

api/handler/head.go

@@ -25,8 +25,8 @@ func getRangeToDetectContentType(maxSize int64) *layer.RangeParams {
 
 func (h *handler) HeadObjectHandler(w http.ResponseWriter, r *http.Request) {
 	var (
-		err error
-		inf *layer.ObjectInfo
+		err  error
+		info *layer.ObjectInfo
 
 		reqInfo = api.GetReqInfo(r.Context())
 	)
@@ -36,23 +36,33 @@ func (h *handler) HeadObjectHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if inf, err = h.obj.GetObjectInfo(r.Context(), reqInfo.BucketName, reqInfo.ObjectName); err != nil {
+	p := &layer.HeadObjectParams{
+		Bucket:    reqInfo.BucketName,
+		Object:    reqInfo.ObjectName,
+		VersionID: reqInfo.URL.Query().Get(api.QueryVersionID),
+	}
+
+	if info, err = h.obj.GetObjectInfo(r.Context(), p); err != nil {
 		h.logAndSendError(w, "could not fetch object info", reqInfo, err)
 		return
 	}
-	buffer := bytes.NewBuffer(make([]byte, 0, sizeToDetectType))
-	getParams := &layer.GetObjectParams{
-		Bucket: inf.Bucket,
-		Object: inf.Name,
-		Writer: buffer,
-		Range:  getRangeToDetectContentType(inf.Size),
+
+	if len(info.ContentType) == 0 {
+		buffer := bytes.NewBuffer(make([]byte, 0, sizeToDetectType))
+		getParams := &layer.GetObjectParams{
+			ObjectInfo: info,
+			Writer:     buffer,
+			Range:      getRangeToDetectContentType(info.Size),
+			VersionID:  reqInfo.URL.Query().Get(api.QueryVersionID),
+		}
+		if err = h.obj.GetObject(r.Context(), getParams); err != nil {
+			h.logAndSendError(w, "could not get object", reqInfo, err, zap.Stringer("oid", info.ID()))
+			return
+		}
+		info.ContentType = http.DetectContentType(buffer.Bytes())
 	}
-	if err = h.obj.GetObject(r.Context(), getParams); err != nil {
-		h.logAndSendError(w, "could not get object", reqInfo, err, zap.Stringer("oid", inf.ID()))
-		return
-	}
-	inf.ContentType = http.DetectContentType(buffer.Bytes())
-	writeHeaders(w.Header(), inf)
+
+	writeHeaders(w.Header(), info)
 	w.WriteHeader(http.StatusOK)
 }
 

api/handler/list.go

@@ -9,13 +9,6 @@ import (
 	"github.com/nspcc-dev/neofs-s3-gw/api"
 )
 
-// VersioningConfiguration contains VersioningConfiguration XML representation.
-type VersioningConfiguration struct {
-	XMLName xml.Name `xml:"VersioningConfiguration"`
-	Text    string   `xml:",chardata"`
-	Xmlns   string   `xml:"xmlns,attr"`
-}
-
 // ListMultipartUploadsResult contains ListMultipartUploadsResult XML representation.
 type ListMultipartUploadsResult struct {
 	XMLName xml.Name `xml:"ListMultipartUploadsResult"`
@@ -62,20 +55,6 @@ func (h *handler) ListBucketsHandler(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-// GetBucketVersioningHandler implements bucket versioning getter handler.
-func (h *handler) GetBucketVersioningHandler(w http.ResponseWriter, r *http.Request) {
-	var (
-		reqInfo = api.GetReqInfo(r.Context())
-		res     = new(VersioningConfiguration)
-	)
-
-	res.Xmlns = "http://s3.amazonaws.com/doc/2006-03-01/"
-
-	if err := api.EncodeToResponse(w, res); err != nil {
-		h.logAndSendError(w, "something went wrong", reqInfo, err)
-	}
-}
-
 // ListMultipartUploadsHandler implements multipart uploads listing handler.
 func (h *handler) ListMultipartUploadsHandler(w http.ResponseWriter, r *http.Request) {
 	var (

api/handler/not_support.go

@@ -23,10 +23,6 @@ func (h *handler) PutBucketTaggingHandler(w http.ResponseWriter, r *http.Request
 	h.logAndSendError(w, "not supported", api.GetReqInfo(r.Context()), errors.GetAPIError(errors.ErrNotSupported))
 }
 
-func (h *handler) PutBucketVersioningHandler(w http.ResponseWriter, r *http.Request) {
-	h.logAndSendError(w, "not supported", api.GetReqInfo(r.Context()), errors.GetAPIError(errors.ErrNotSupported))
-}
-
 func (h *handler) PutBucketNotificationHandler(w http.ResponseWriter, r *http.Request) {
 	h.logAndSendError(w, "not supported", api.GetReqInfo(r.Context()), errors.GetAPIError(errors.ErrNotSupported))
 }

api/handler/object_list.go

@@ -217,6 +217,16 @@ func (h *handler) ListBucketObjectVersionsHandler(w http.ResponseWriter, r *http
 		return
 	}
 
+	bktInfo, err := h.obj.GetBucketInfo(r.Context(), reqInfo.BucketName)
+	if err != nil {
+		h.logAndSendError(w, "could not get bucket info", reqInfo, err)
+		return
+	}
+	if err = checkOwner(bktInfo, r.Header.Get(api.AmzExpectedBucketOwner)); err != nil {
+		h.logAndSendError(w, "expected owner doesn't match", reqInfo, err)
+		return
+	}
+
 	info, err := h.obj.ListObjectVersions(r.Context(), p)
 	if err != nil {
 		h.logAndSendError(w, "something went wrong", reqInfo, err)
@@ -263,7 +273,7 @@ func encodeListObjectVersionsToResponse(info *layer.ListObjectVersionsInfo, buck
 	}
 
 	for _, prefix := range info.CommonPrefixes {
-		res.CommonPrefixes = append(res.CommonPrefixes, CommonPrefix{Prefix: *prefix})
+		res.CommonPrefixes = append(res.CommonPrefixes, CommonPrefix{Prefix: prefix})
 	}
 
 	for _, ver := range info.Version {
@@ -276,7 +286,7 @@ func encodeListObjectVersionsToResponse(info *layer.ListObjectVersionsInfo, buck
 				DisplayName: ver.Object.Owner.String(),
 			},
 			Size:      ver.Object.Size,
-			VersionID: ver.VersionID,
+			VersionID: ver.Object.Version(),
 			ETag:      ver.Object.HashSum,
 		})
 	}
@@ -284,13 +294,13 @@ func encodeListObjectVersionsToResponse(info *layer.ListObjectVersionsInfo, buck
 	for _, del := range info.DeleteMarker {
 		res.DeleteMarker = append(res.DeleteMarker, DeleteMarkerEntry{
 			IsLatest:     del.IsLatest,
-			Key:          del.Key,
-			LastModified: del.LastModified,
+			Key:          del.Object.Name,
+			LastModified: del.Object.Created.Format(time.RFC3339),
 			Owner: Owner{
-				ID:          del.Owner.String(),
-				DisplayName: del.Owner.String(),
+				ID:          del.Object.Owner.String(),
+				DisplayName: del.Object.Owner.String(),
 			},
-			VersionID: del.VersionID,
+			VersionID: del.Object.Version(),
 		})
 	}
 

api/handler/put.go

@@ -114,6 +114,12 @@ func (h *handler) PutObjectHandler(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
+	if versioning, err := h.obj.GetBucketVersioning(r.Context(), reqInfo.BucketName); err != nil {
+		h.log.Warn("couldn't get bucket versioning", zap.String("bucket name", reqInfo.BucketName), zap.Error(err))
+	} else if versioning.VersioningEnabled {
+		w.Header().Set(api.AmzVersionID, info.Version())
+	}
+
 	w.Header().Set(api.ETag, info.HashSum)
 	api.WriteSuccessResponseHeadersOnly(w)
 }

api/handler/response.go

@@ -164,6 +164,13 @@ type ListObjectsVersionsResponse struct {
 	CommonPrefixes      []CommonPrefix          `xml:"CommonPrefixes"`
 }
 
+// VersioningConfiguration contains VersioningConfiguration XML representation.
+type VersioningConfiguration struct {
+	XMLName   xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ VersioningConfiguration"`
+	Status    string   `xml:"Status,omitempty"`
+	MfaDelete string   `xml:"MfaDelete,omitempty"`
+}
+
 // MarshalXML - StringMap marshals into XML.
 func (s StringMap) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
 	tokens := []xml.Token{start}

api/handler/versioning.go

@@ -0,0 +1,85 @@
+package handler
+
+import (
+	"encoding/xml"
+	"net/http"
+
+	"github.com/nspcc-dev/neofs-s3-gw/api"
+	"github.com/nspcc-dev/neofs-s3-gw/api/errors"
+	"github.com/nspcc-dev/neofs-s3-gw/api/layer"
+	"go.uber.org/zap"
+)
+
+func (h *handler) PutBucketVersioningHandler(w http.ResponseWriter, r *http.Request) {
+	reqInfo := api.GetReqInfo(r.Context())
+
+	configuration := new(VersioningConfiguration)
+	if err := xml.NewDecoder(r.Body).Decode(configuration); err != nil {
+		h.logAndSendError(w, "couldn't decode versioning configuration", reqInfo, errors.GetAPIError(errors.ErrIllegalVersioningConfigurationException))
+		return
+	}
+
+	p := &layer.PutVersioningParams{
+		Bucket:   reqInfo.BucketName,
+		Settings: &layer.BucketSettings{VersioningEnabled: configuration.Status == "Enabled"},
+	}
+
+	bktInfo, err := h.obj.GetBucketInfo(r.Context(), reqInfo.BucketName)
+	if err != nil {
+		h.logAndSendError(w, "could not get bucket info", reqInfo, err)
+		return
+	}
+	if err = checkOwner(bktInfo, r.Header.Get(api.AmzExpectedBucketOwner)); err != nil {
+		h.logAndSendError(w, "expected owner doesn't match", reqInfo, err)
+		return
+	}
+
+	if _, err := h.obj.PutBucketVersioning(r.Context(), p); err != nil {
+		h.logAndSendError(w, "couldn't put update versioning settings", reqInfo, err)
+	}
+}
+
+// GetBucketVersioningHandler implements bucket versioning getter handler.
+func (h *handler) GetBucketVersioningHandler(w http.ResponseWriter, r *http.Request) {
+	reqInfo := api.GetReqInfo(r.Context())
+
+	bktInfo, err := h.obj.GetBucketInfo(r.Context(), reqInfo.BucketName)
+	if err != nil {
+		h.logAndSendError(w, "could not get bucket info", reqInfo, err)
+		return
+	}
+	if err = checkOwner(bktInfo, r.Header.Get(api.AmzExpectedBucketOwner)); err != nil {
+		h.logAndSendError(w, "expected owner doesn't match", reqInfo, err)
+		return
+	}
+
+	settings, err := h.obj.GetBucketVersioning(r.Context(), reqInfo.BucketName)
+	if err != nil {
+		if errors.IsS3Error(err, errors.ErrNoSuchBucket) {
+			h.logAndSendError(w, "couldn't get versioning settings", reqInfo, err)
+			return
+		}
+		h.log.Warn("couldn't get version settings object: default version settings will be used",
+			zap.String("request_id", reqInfo.RequestID),
+			zap.String("method", reqInfo.API),
+			zap.String("bucket_name", reqInfo.BucketName),
+			zap.Error(err))
+	}
+
+	if err = api.EncodeToResponse(w, formVersioningConfiguration(settings)); err != nil {
+		h.logAndSendError(w, "something went wrong", reqInfo, err)
+	}
+}
+
+func formVersioningConfiguration(settings *layer.BucketSettings) *VersioningConfiguration {
+	res := &VersioningConfiguration{}
+	if settings == nil {
+		return res
+	}
+	if settings.VersioningEnabled {
+		res.Status = "Enabled"
+	} else {
+		res.Status = "Suspended"
+	}
+	return res
+}

api/headers.go

@@ -4,6 +4,7 @@ package api
 const (
 	MetadataPrefix       = "X-Amz-Meta-"
 	AmzMetadataDirective = "X-Amz-Metadata-Directive"
+	AmzVersionID         = "X-Amz-Version-Id"
 
 	LastModified       = "Last-Modified"
 	Date               = "Date"
@@ -43,3 +44,8 @@ const (
 
 	ContainerID = "X-Container-Id"
 )
+
+// S3 request query params.
+const (
+	QueryVersionID = "versionId"
+)

api/layer/container.go

@@ -11,37 +11,29 @@ import (
 	"github.com/nspcc-dev/neofs-api-go/pkg/acl/eacl"
 	"github.com/nspcc-dev/neofs-api-go/pkg/container"
 	cid "github.com/nspcc-dev/neofs-api-go/pkg/container/id"
-	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
 	"github.com/nspcc-dev/neofs-s3-gw/api"
+	"github.com/nspcc-dev/neofs-s3-gw/api/cache"
 	"github.com/nspcc-dev/neofs-s3-gw/api/errors"
 	"github.com/nspcc-dev/neofs-sdk-go/pkg/pool"
 	"go.uber.org/zap"
 )
 
 type (
-	// BucketInfo stores basic bucket data.
-	BucketInfo struct {
-		Name     string
-		CID      *cid.ID
-		Owner    *owner.ID
-		Created  time.Time
-		BasicACL uint32
-	}
 	// BucketACL extends BucketInfo by eacl.Table.
 	BucketACL struct {
-		Info *BucketInfo
+		Info *cache.BucketInfo
 		EACL *eacl.Table
 	}
 )
 
-func (n *layer) containerInfo(ctx context.Context, cid *cid.ID) (*BucketInfo, error) {
+func (n *layer) containerInfo(ctx context.Context, cid *cid.ID) (*cache.BucketInfo, error) {
 	var (
 		err       error
 		res       *container.Container
 		rid       = api.GetRequestID(ctx)
 		bearerOpt = n.BearerOpt(ctx)
 
-		info = &BucketInfo{
+		info = &cache.BucketInfo{
 			CID:  cid,
 			Name: cid.String(),
 		}
@@ -82,10 +74,17 @@ func (n *layer) containerInfo(ctx context.Context, cid *cid.ID) (*BucketInfo, er
 		}
 	}
 
+	if err := n.bucketCache.Put(info); err != nil {
+		n.log.Warn("could not put bucket info into cache",
+			zap.Stringer("cid", cid),
+			zap.String("bucket_name", info.Name),
+			zap.Error(err))
+	}
+
 	return info, nil
 }
 
-func (n *layer) containerList(ctx context.Context) ([]*BucketInfo, error) {
+func (n *layer) containerList(ctx context.Context) ([]*cache.BucketInfo, error) {
 	var (
 		err       error
 		own       = n.Owner(ctx)
@@ -101,7 +100,7 @@ func (n *layer) containerList(ctx context.Context) ([]*BucketInfo, error) {
 		return nil, err
 	}
 
-	list := make([]*BucketInfo, 0, len(res))
+	list := make([]*cache.BucketInfo, 0, len(res))
 	for _, cid := range res {
 		info, err := n.containerInfo(ctx, cid)
 		if err != nil {
@@ -118,29 +117,42 @@ func (n *layer) containerList(ctx context.Context) ([]*BucketInfo, error) {
 }
 
 func (n *layer) createContainer(ctx context.Context, p *CreateBucketParams) (*cid.ID, error) {
+	var err error
+	bktInfo := &cache.BucketInfo{
+		Name:     p.Name,
+		Owner:    n.Owner(ctx),
+		Created:  time.Now(),
+		BasicACL: p.ACL,
+	}
 	cnr := container.New(
 		container.WithPolicy(p.Policy),
 		container.WithCustomBasicACL(p.ACL),
 		container.WithAttribute(container.AttributeName, p.Name),
-		container.WithAttribute(container.AttributeTimestamp, strconv.FormatInt(time.Now().Unix(), 10)))
+		container.WithAttribute(container.AttributeTimestamp, strconv.FormatInt(bktInfo.Created.Unix(), 10)))
 
 	cnr.SetSessionToken(p.BoxData.Gate.SessionToken)
-	cnr.SetOwnerID(n.Owner(ctx))
+	cnr.SetOwnerID(bktInfo.Owner)
 
-	cid, err := n.pool.PutContainer(ctx, cnr)
-	if err != nil {
-		return nil, fmt.Errorf("failed to create a bucket: %w", err)
-	}
-
-	if err = n.pool.WaitForContainerPresence(ctx, cid, pool.DefaultPollingParams()); err != nil {
+	if bktInfo.CID, err = n.pool.PutContainer(ctx, cnr); err != nil {
 		return nil, err
 	}
 
-	if err := n.setContainerEACLTable(ctx, cid, p.EACL); err != nil {
+	if err = n.pool.WaitForContainerPresence(ctx, bktInfo.CID, pool.DefaultPollingParams()); err != nil {
 		return nil, err
 	}
 
-	return cid, nil
+	if err = n.setContainerEACLTable(ctx, bktInfo.CID, p.EACL); err != nil {
+		return nil, err
+	}
+
+	if err = n.bucketCache.Put(bktInfo); err != nil {
+		n.log.Warn("couldn't put bucket info into cache",
+			zap.String("bucket name", bktInfo.Name),
+			zap.Stringer("bucket cid", bktInfo.CID),
+			zap.Error(err))
+	}
+
+	return bktInfo.CID, nil
 }
 
 func (n *layer) setContainerEACLTable(ctx context.Context, cid *cid.ID, table *eacl.Table) error {

api/layer/detector.go

@@ -3,24 +3,56 @@ package layer
 import (
 	"io"
 	"net/http"
-	"sync"
 )
 
-type detector struct {
-	io.Reader
-	sync.Once
+type (
+	detector struct {
+		io.Reader
+		err  error
+		data []byte
+	}
+	errReader struct {
+		data   []byte
+		err    error
+		offset int
+	}
+)
 
-	contentType string
+const contentTypeDetectSize = 512
+
+func newReader(data []byte, err error) *errReader {
+	return &errReader{data: data, err: err}
 }
 
-func newDetector(r io.Reader) *detector {
-	return &detector{Reader: r}
+func (r *errReader) Read(b []byte) (int, error) {
+	if r.offset >= len(r.data) {
+		return 0, io.EOF
+	}
+	n := copy(b, r.data[r.offset:])
+	r.offset += n
+	if r.offset >= len(r.data) {
+		return n, r.err
+	}
+	return n, nil
 }
 
-func (d *detector) Read(data []byte) (int, error) {
-	d.Do(func() {
-		d.contentType = http.DetectContentType(data)
-	})
-
-	return d.Reader.Read(data)
+func newDetector(reader io.Reader) *detector {
+	return &detector{
+		data:   make([]byte, contentTypeDetectSize),
+		Reader: reader,
+	}
+}
+
+func (d *detector) Detect() (string, error) {
+	n, err := d.Reader.Read(d.data)
+	if err != nil && err != io.EOF {
+		d.err = err
+		return "", err
+	}
+	d.data = d.data[:n]
+	return http.DetectContentType(d.data), nil
+}
+
+func (d *detector) MultiReader() io.Reader {
+	return io.MultiReader(newReader(d.data, d.err), d.Reader)
 }

api/layer/layer.go

@@ -1,12 +1,12 @@
 package layer
 
 import (
+	"bytes"
 	"context"
 	"crypto/ecdsa"
 	"fmt"
 	"io"
 	"net/url"
-	"sort"
 	"time"
 
 	"github.com/nspcc-dev/neofs-api-go/pkg/acl/eacl"
@@ -25,10 +25,13 @@ import (
 
 type (
 	layer struct {
-		pool         pool.Pool
-		log          *zap.Logger
-		listObjCache ObjectsListCache
-		objCache     cache.ObjectsCache
+		pool        pool.Pool
+		log         *zap.Logger
+		listsCache  ObjectsListCache
+		objCache    cache.ObjectsCache
+		namesCache  cache.ObjectsNameCache
+		bucketCache cache.BucketCache
+		systemCache cache.SystemCache
 	}
 
 	// CacheConfig contains params for caches.
@@ -48,12 +51,19 @@ type (
 
 	// GetObjectParams stores object get request parameters.
 	GetObjectParams struct {
-		Range  *RangeParams
-		Bucket string
-		Object string
-		Offset int64
-		Length int64
-		Writer io.Writer
+		Range      *RangeParams
+		ObjectInfo *ObjectInfo
+		Offset     int64
+		Length     int64
+		Writer     io.Writer
+		VersionID  string
+	}
+
+	// HeadObjectParams stores object head request parameters.
+	HeadObjectParams struct {
+		Bucket    string
+		Object    string
+		VersionID string
 	}
 
 	// RangeParams stores range header request parameters.
@@ -71,11 +81,21 @@ type (
 		Header map[string]string
 	}
 
+	// PutVersioningParams stores object copy request parameters.
+	PutVersioningParams struct {
+		Bucket   string
+		Settings *BucketSettings
+	}
+
+	// BucketSettings stores settings such as versioning.
+	BucketSettings struct {
+		VersioningEnabled bool
+	}
+
 	// CopyObjectParams stores object copy request parameters.
 	CopyObjectParams struct {
-		SrcBucket string
+		SrcObject *ObjectInfo
 		DstBucket string
-		SrcObject string
 		DstObject string
 		SrcSize   int64
 		Header    map[string]string
@@ -108,6 +128,12 @@ type (
 		Encode          string
 	}
 
+	// VersionedObject stores object name and version.
+	VersionedObject struct {
+		Name      string
+		VersionID string
+	}
+
 	// NeoFS provides basic NeoFS interface.
 	NeoFS interface {
 		Get(ctx context.Context, address *object.Address) (*object.Object, error)
@@ -117,15 +143,18 @@ type (
 	Client interface {
 		NeoFS
 
-		ListBuckets(ctx context.Context) ([]*BucketInfo, error)
-		GetBucketInfo(ctx context.Context, name string) (*BucketInfo, error)
+		PutBucketVersioning(ctx context.Context, p *PutVersioningParams) (*ObjectInfo, error)
+		GetBucketVersioning(ctx context.Context, name string) (*BucketSettings, error)
+
+		ListBuckets(ctx context.Context) ([]*cache.BucketInfo, error)
+		GetBucketInfo(ctx context.Context, name string) (*cache.BucketInfo, error)
 		GetBucketACL(ctx context.Context, name string) (*BucketACL, error)
 		PutBucketACL(ctx context.Context, p *PutBucketACLParams) error
 		CreateBucket(ctx context.Context, p *CreateBucketParams) (*cid.ID, error)
 		DeleteBucket(ctx context.Context, p *DeleteBucketParams) error
 
 		GetObject(ctx context.Context, p *GetObjectParams) error
-		GetObjectInfo(ctx context.Context, bucketName, objectName string) (*ObjectInfo, error)
+		GetObjectInfo(ctx context.Context, p *HeadObjectParams) (*ObjectInfo, error)
 
 		PutObject(ctx context.Context, p *PutObjectParams) (*ObjectInfo, error)
 
@@ -135,23 +164,26 @@ type (
 		ListObjectsV2(ctx context.Context, p *ListObjectsParamsV2) (*ListObjectsInfoV2, error)
 		ListObjectVersions(ctx context.Context, p *ListObjectVersionsParams) (*ListObjectVersionsInfo, error)
 
-		DeleteObject(ctx context.Context, bucket, object string) error
-		DeleteObjects(ctx context.Context, bucket string, objects []string) []error
+		DeleteObjects(ctx context.Context, bucket string, objects []*VersionedObject) []error
 	}
 )
 
-const (
-	unversionedObjectVersionID = "null"
-)
+func (t *VersionedObject) String() string {
+	return t.Name + ":" + t.VersionID
+}
 
 // NewLayer creates instance of layer. It checks credentials
 // and establishes gRPC connection with node.
 func NewLayer(log *zap.Logger, conns pool.Pool, config *CacheConfig) Client {
 	return &layer{
-		pool:         conns,
-		log:          log,
-		listObjCache: newListObjectsCache(config.ListObjectsLifetime),
-		objCache:     cache.New(config.Size, config.Lifetime),
+		pool:       conns,
+		log:        log,
+		listsCache: newListObjectsCache(config.ListObjectsLifetime),
+		objCache:   cache.New(config.Size, config.Lifetime),
+		//todo reconsider cache params
+		namesCache:  cache.NewObjectsNameCache(1000, time.Minute),
+		bucketCache: cache.NewBucketCache(150, time.Minute),
+		systemCache: cache.NewSystemCache(1000, 5*time.Minute),
 	}
 }
 
@@ -189,12 +221,16 @@ func (n *layer) Get(ctx context.Context, address *object.Address) (*object.Objec
 }
 
 // GetBucketInfo returns bucket info by name.
-func (n *layer) GetBucketInfo(ctx context.Context, name string) (*BucketInfo, error) {
+func (n *layer) GetBucketInfo(ctx context.Context, name string) (*cache.BucketInfo, error) {
 	name, err := url.QueryUnescape(name)
 	if err != nil {
 		return nil, err
 	}
 
+	if bktInfo := n.bucketCache.Get(name); bktInfo != nil {
+		return bktInfo, nil
+	}
+
 	containerID := new(cid.ID)
 	if err := containerID.Parse(name); err != nil {
 		list, err := n.containerList(ctx)
@@ -243,33 +279,20 @@ func (n *layer) PutBucketACL(ctx context.Context, param *PutBucketACLParams) err
 
 // 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) ([]*cache.BucketInfo, error) {
 	return n.containerList(ctx)
 }
 
 // GetObject from storage.
 func (n *layer) GetObject(ctx context.Context, p *GetObjectParams) error {
-	var (
-		err error
-		oid *object.ID
-		bkt *BucketInfo
-	)
-
-	if bkt, err = n.GetBucketInfo(ctx, p.Bucket); err != nil {
-		return fmt.Errorf("couldn't find bucket: %s : %w", p.Bucket, err)
-	} else if oid, err = n.objectFindID(ctx, &findParams{cid: bkt.CID, val: p.Object}); err != nil {
-		return fmt.Errorf("search of the object failed: cid: %s, val: %s : %w", bkt.CID, p.Object, err)
-	}
-
-	addr := object.NewAddress()
-	addr.SetObjectID(oid)
-	addr.SetContainerID(bkt.CID)
+	var err error
 
 	params := &getParams{
-		Writer:  p.Writer,
-		address: addr,
-		offset:  p.Offset,
-		length:  p.Length,
+		Writer: p.Writer,
+		cid:    p.ObjectInfo.CID(),
+		oid:    p.ObjectInfo.ID(),
+		offset: p.Offset,
+		length: p.Length,
 	}
 
 	if p.Range != nil {
@@ -284,64 +307,58 @@ func (n *layer) GetObject(ctx context.Context, p *GetObjectParams) error {
 	}
 
 	if err != nil {
-		n.objCache.Delete(addr)
-		return fmt.Errorf("couldn't get object, cid: %s : %w", bkt.CID, err)
+		n.objCache.Delete(p.ObjectInfo.Address())
+		return fmt.Errorf("couldn't get object, cid: %s : %w", p.ObjectInfo.CID(), err)
 	}
 
 	return nil
 }
 
-func (n *layer) checkObject(ctx context.Context, cid *cid.ID, filename string) error {
-	var err error
-
-	if _, err = n.objectFindID(ctx, &findParams{cid: cid, val: filename}); err == nil {
-		return new(errors.ObjectAlreadyExists)
-	}
-
-	return err
-}
-
 // GetObjectInfo returns meta information about the object.
-func (n *layer) GetObjectInfo(ctx context.Context, bucketName, filename string) (*ObjectInfo, error) {
-	var (
-		err  error
-		oid  *object.ID
-		bkt  *BucketInfo
-		meta *object.Object
-	)
-
-	if bkt, err = n.GetBucketInfo(ctx, bucketName); err != nil {
+func (n *layer) GetObjectInfo(ctx context.Context, p *HeadObjectParams) (*ObjectInfo, error) {
+	bkt, err := n.GetBucketInfo(ctx, p.Bucket)
+	if err != nil {
 		n.log.Error("could not fetch bucket info", zap.Error(err))
 		return nil, err
-	} else if oid, err = n.objectFindID(ctx, &findParams{cid: bkt.CID, val: filename}); err != nil {
-		n.log.Error("could not find object id", zap.Error(err))
+	}
+
+	if len(p.VersionID) == 0 {
+		return n.headLastVersionIfNotDeleted(ctx, bkt, p.Object)
+	}
+
+	return n.headVersion(ctx, bkt, p.VersionID)
+}
+
+func (n *layer) getSettingsObjectInfo(ctx context.Context, bkt *cache.BucketInfo) (*ObjectInfo, error) {
+	if meta := n.systemCache.Get(bkt.SettingsObjectKey()); meta != nil {
+		return objInfoFromMeta(bkt, meta), nil
+	}
+
+	oid, err := n.objectFindID(ctx, &findParams{cid: bkt.CID, attr: objectSystemAttributeName, val: bkt.SettingsObjectName()})
+	if err != nil {
 		return nil, err
 	}
 
-	addr := object.NewAddress()
-	addr.SetObjectID(oid)
-	addr.SetContainerID(bkt.CID)
-
-	/* todo: now we get an address via request to NeoFS and try to find the object with the address in cache
-	 but it will be resolved after implementation of local cache with nicenames and address of objects
-	for get/head requests */
-	meta = n.objCache.Get(addr)
-	if meta == nil {
-		meta, err = n.objectHead(ctx, addr)
-		if err != nil {
-			n.log.Error("could not fetch object head", zap.Error(err))
-			return nil, err
-		}
-		if err = n.objCache.Put(addr, *meta); err != nil {
-			n.log.Error("couldn't cache an object", zap.Error(err))
-		}
+	meta, err := n.objectHead(ctx, bkt.CID, oid)
+	if err != nil {
+		n.log.Error("could not fetch object head", zap.Error(err))
+		return nil, err
 	}
-	return objectInfoFromMeta(bkt, meta, "", ""), nil
+	if err = n.systemCache.Put(bkt.SettingsObjectKey(), meta); err != nil {
+		n.log.Error("couldn't cache system object", zap.Error(err))
+	}
+
+	return objInfoFromMeta(bkt, meta), nil
 }
 
 // PutObject into storage.
 func (n *layer) PutObject(ctx context.Context, p *PutObjectParams) (*ObjectInfo, error) {
-	return n.objectPut(ctx, p)
+	bkt, err := n.GetBucketInfo(ctx, p.Bucket)
+	if err != nil {
+		return nil, err
+	}
+
+	return n.objectPut(ctx, bkt, p)
 }
 
 // CopyObject from one bucket into another bucket.
@@ -350,9 +367,8 @@ func (n *layer) CopyObject(ctx context.Context, p *CopyObjectParams) (*ObjectInf
 
 	go func() {
 		err := n.GetObject(ctx, &GetObjectParams{
-			Bucket: p.SrcBucket,
-			Object: p.SrcObject,
-			Writer: pw,
+			ObjectInfo: p.SrcObject,
+			Writer:     pw,
 		})
 
 		if err = pw.CloseWithError(err); err != nil {
@@ -370,35 +386,47 @@ 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, filename string) error {
+func (n *layer) deleteObject(ctx context.Context, bkt *cache.BucketInfo, obj *VersionedObject) error {
 	var (
 		err error
 		ids []*object.ID
-		bkt *BucketInfo
 	)
 
-	if bkt, err = n.GetBucketInfo(ctx, bucket); err != nil {
-		return &errors.DeleteError{
-			Err:    err,
-			Object: filename,
+	versioningEnabled := n.isVersioningEnabled(ctx, bkt)
+	if !versioningEnabled && obj.VersionID != unversionedObjectVersionID && obj.VersionID != "" {
+		return errors.GetAPIError(errors.ErrInvalidVersion)
+	}
+
+	if versioningEnabled {
+		p := &PutObjectParams{
+			Object: obj.Name,
+			Reader: bytes.NewReader(nil),
+			Header: map[string]string{versionsDeleteMarkAttr: obj.VersionID},
 		}
-	} else if ids, err = n.objectSearch(ctx, &findParams{cid: bkt.CID, val: filename}); err != nil {
-		return &errors.DeleteError{
-			Err:    err,
-			Object: filename,
+		if len(obj.VersionID) != 0 {
+			id, err := n.checkVersionsExist(ctx, bkt, obj)
+			if err != nil {
+				return err
+			}
+			ids = []*object.ID{id}
+
+			p.Header[versionsDelAttr] = obj.VersionID
+		} else {
+			p.Header[versionsDeleteMarkAttr] = delMarkFullObject
+		}
+		if _, err = n.objectPut(ctx, bkt, p); err != nil {
+			return err
+		}
+	} else {
+		ids, err = n.objectSearch(ctx, &findParams{cid: bkt.CID, val: obj.Name})
+		if err != nil {
+			return err
 		}
 	}
 
 	for _, id := range ids {
-		addr := object.NewAddress()
-		addr.SetObjectID(id)
-		addr.SetContainerID(bkt.CID)
-
-		if err = n.objectDelete(ctx, addr); err != nil {
-			return &errors.DeleteError{
-				Err:    err,
-				Object: filename,
-			}
+		if err = n.objectDelete(ctx, bkt.CID, id); err != nil {
+			return err
 		}
 	}
 
@@ -406,12 +434,17 @@ func (n *layer) DeleteObject(ctx context.Context, bucket, filename string) error
 }
 
 // DeleteObjects from the storage.
-func (n *layer) DeleteObjects(ctx context.Context, bucket string, objects []string) []error {
+func (n *layer) DeleteObjects(ctx context.Context, bucket string, objects []*VersionedObject) []error {
 	var errs = make([]error, 0, len(objects))
 
-	for i := range objects {
-		if err := n.DeleteObject(ctx, bucket, objects[i]); err != nil {
-			errs = append(errs, err)
+	bkt, err := n.GetBucketInfo(ctx, bucket)
+	if err != nil {
+		return append(errs, err)
+	}
+
+	for _, obj := range objects {
+		if err := n.deleteObject(ctx, bkt, obj); err != nil {
+			errs = append(errs, &errors.ObjectError{Err: err, Object: obj.Name, Version: obj.VersionID})
 		}
 	}
 
@@ -436,75 +469,17 @@ func (n *layer) DeleteBucket(ctx context.Context, p *DeleteBucketParams) error {
 		return err
 	}
 
-	return n.deleteContainer(ctx, bucketInfo.CID)
-}
-
-func (n *layer) ListObjectVersions(ctx context.Context, p *ListObjectVersionsParams) (*ListObjectVersionsInfo, error) {
-	var (
-		res       = ListObjectVersionsInfo{}
-		err       error
-		bkt       *BucketInfo
-		ids       []*object.ID
-		uniqNames = make(map[string]bool)
-	)
-
-	if bkt, err = n.GetBucketInfo(ctx, p.Bucket); err != nil {
-		return nil, err
-	} else if ids, err = n.objectSearch(ctx, &findParams{cid: bkt.CID}); err != nil {
-		return nil, err
-	}
-
-	versions := make([]*ObjectVersionInfo, 0, len(ids))
-	// todo: deletemarkers is empty now, we will use it after proper realization of versioning
-	deleted := make([]*DeletedObjectInfo, 0, len(ids))
-	res.DeleteMarker = deleted
-
-	for _, id := range ids {
-		addr := object.NewAddress()
-		addr.SetObjectID(id)
-		addr.SetContainerID(bkt.CID)
-
-		meta, err := n.objectHead(ctx, addr)
-		if err != nil {
-			n.log.Warn("could not fetch object meta", zap.Error(err))
-			continue
-		}
-		if ov := objectVersionInfoFromMeta(bkt, meta, p.Prefix, p.Delimiter); ov != nil {
-			if _, ok := uniqNames[ov.Object.Name]; ok {
-				continue
-			}
-			if len(p.KeyMarker) > 0 && ov.Object.Name <= p.KeyMarker {
-				continue
-			}
-			uniqNames[ov.Object.Name] = ov.Object.isDir
-			versions = append(versions, ov)
-		}
-	}
-
-	sort.Slice(versions, func(i, j int) bool {
-		return versions[i].Object.Name < versions[j].Object.Name
-	})
-
-	if len(versions) > p.MaxKeys {
-		res.IsTruncated = true
-
-		lastVersion := versions[p.MaxKeys-1]
-		res.KeyMarker = lastVersion.Object.Name
-		res.VersionIDMarker = lastVersion.VersionID
-
-		nextVersion := versions[p.MaxKeys]
-		res.NextKeyMarker = nextVersion.Object.Name
-		res.NextVersionIDMarker = nextVersion.VersionID
-
-		versions = versions[:p.MaxKeys]
-	}
-
-	for _, ov := range versions {
-		if isDir := uniqNames[ov.Object.Name]; isDir {
-			res.CommonPrefixes = append(res.CommonPrefixes, &ov.Object.Name)
-		} else {
-			res.Version = append(res.Version, ov)
-		}
-	}
-	return &res, nil
+	objects, err := n.listSortedObjectsFromNeoFS(ctx, allObjectParams{Bucket: bucketInfo})
+	if err != nil {
+		return err
+	}
+	if len(objects) != 0 {
+		return errors.GetAPIError(errors.ErrBucketNotEmpty)
+	}
+
+	if err = n.deleteContainer(ctx, bucketInfo.CID); err != nil {
+		return err
+	}
+	n.bucketCache.Delete(bucketInfo.Name)
+	return nil
 }

api/layer/object.go

@@ -7,28 +7,34 @@ import (
 	"net/url"
 	"sort"
 	"strconv"
+	"strings"
 	"time"
 
 	"github.com/nspcc-dev/neofs-api-go/pkg/client"
 	cid "github.com/nspcc-dev/neofs-api-go/pkg/container/id"
 	"github.com/nspcc-dev/neofs-api-go/pkg/object"
+	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
+	"github.com/nspcc-dev/neofs-s3-gw/api"
+	"github.com/nspcc-dev/neofs-s3-gw/api/cache"
 	apiErrors "github.com/nspcc-dev/neofs-s3-gw/api/errors"
 	"go.uber.org/zap"
 )
 
 type (
 	findParams struct {
-		val string
-		cid *cid.ID
+		attr string
+		val  string
+		cid  *cid.ID
 	}
 
 	getParams struct {
 		io.Writer
 		*object.Range
 
-		offset  int64
-		length  int64
-		address *object.Address
+		offset int64
+		length int64
+		cid    *cid.ID
+		oid    *object.ID
 	}
 
 	// ListObjectsParamsCommon contains common parameters for ListObjectsV1 and ListObjectsV2.
@@ -55,7 +61,7 @@ type (
 	}
 
 	allObjectParams struct {
-		Bucket    *BucketInfo
+		Bucket    *cache.BucketInfo
 		Delimiter string
 		Prefix    string
 	}
@@ -70,7 +76,11 @@ func (n *layer) objectSearch(ctx context.Context, p *findParams) ([]*object.ID,
 	if filename, err := url.QueryUnescape(p.val); err != nil {
 		return nil, err
 	} else if filename != "" {
-		opts.AddFilter(object.AttributeFileName, filename, object.MatchStringEqual)
+		if p.attr == "" {
+			opts.AddFilter(object.AttributeFileName, filename, object.MatchStringEqual)
+		} else {
+			opts.AddFilter(p.attr, filename, object.MatchStringEqual)
+		}
 	}
 	return n.pool.SearchObject(ctx, new(client.SearchObjectParams).WithContainerID(p.cid).WithSearchFilters(opts), n.BearerOpt(ctx))
 }
@@ -89,9 +99,16 @@ func (n *layer) objectFindID(ctx context.Context, p *findParams) (*object.ID, er
 	return nil, errors.New("several objects with the same name found")
 }
 
+func newAddress(cid *cid.ID, oid *object.ID) *object.Address {
+	address := object.NewAddress()
+	address.SetContainerID(cid)
+	address.SetObjectID(oid)
+	return address
+}
+
 // objectHead returns all object's headers.
-func (n *layer) objectHead(ctx context.Context, address *object.Address) (*object.Object, error) {
-	ops := new(client.ObjectHeaderParams).WithAddress(address).WithAllFields()
+func (n *layer) objectHead(ctx context.Context, cid *cid.ID, oid *object.ID) (*object.Object, error) {
+	ops := new(client.ObjectHeaderParams).WithAddress(newAddress(cid, oid)).WithAllFields()
 	return n.pool.GetObjectHeader(ctx, ops, n.BearerOpt(ctx))
 }
 
@@ -99,54 +116,96 @@ func (n *layer) objectHead(ctx context.Context, address *object.Address) (*objec
 func (n *layer) objectGet(ctx context.Context, p *getParams) (*object.Object, error) {
 	// prepare length/offset writer
 	w := newWriter(p.Writer, p.offset, p.length)
-	ops := new(client.GetObjectParams).WithAddress(p.address).WithPayloadWriter(w)
+	ops := new(client.GetObjectParams).WithAddress(newAddress(p.cid, p.oid)).WithPayloadWriter(w)
 	return n.pool.GetObject(ctx, ops, n.BearerOpt(ctx))
 }
 
 // objectRange gets object range and writes it into provided io.Writer.
 func (n *layer) objectRange(ctx context.Context, p *getParams) ([]byte, error) {
 	w := newWriter(p.Writer, p.offset, p.length)
-	ops := new(client.RangeDataParams).WithAddress(p.address).WithDataWriter(w).WithRange(p.Range)
+	ops := new(client.RangeDataParams).WithAddress(newAddress(p.cid, p.oid)).WithDataWriter(w).WithRange(p.Range)
 	return n.pool.ObjectPayloadRangeData(ctx, ops, n.BearerOpt(ctx))
 }
 
 // objectPut into NeoFS, took payload from io.Reader.
-func (n *layer) objectPut(ctx context.Context, p *PutObjectParams) (*ObjectInfo, error) {
-	var (
-		err error
-		obj string
-		bkt *BucketInfo
-		own = n.Owner(ctx)
-	)
+func (n *layer) objectPut(ctx context.Context, bkt *cache.BucketInfo, p *PutObjectParams) (*ObjectInfo, error) {
+	own := n.Owner(ctx)
+	obj, err := url.QueryUnescape(p.Object)
+	if err != nil {
+		return nil, err
+	}
 
-	if obj, err = url.QueryUnescape(p.Object); err != nil {
+	versioningEnabled := n.isVersioningEnabled(ctx, bkt)
+	versions, err := n.headVersions(ctx, bkt, obj)
+	if err != nil && !apiErrors.IsS3Error(err, apiErrors.ErrNoSuchKey) {
 		return nil, err
-	} else if bkt, err = n.GetBucketInfo(ctx, p.Bucket); err != nil {
-		return nil, err
-	} else if err = n.checkObject(ctx, bkt.CID, p.Object); err != nil {
-		var errExist *apiErrors.ObjectAlreadyExists
-		if ok := errors.As(err, &errExist); ok {
-			errExist.Bucket = p.Bucket
-			errExist.Object = p.Object
-			return nil, errExist
+	}
+	idsToDeleteArr := updateCRDT2PSetHeaders(p, versions, versioningEnabled)
+
+	r := p.Reader
+	if len(p.Header[api.ContentType]) == 0 {
+		d := newDetector(r)
+		if contentType, err := d.Detect(); err == nil {
+			p.Header[api.ContentType] = contentType
 		}
+		r = d.MultiReader()
+	}
+	rawObject := formRawObject(p, bkt.CID, own, obj)
 
-		if !apiErrors.IsS3Error(err, apiErrors.ErrNoSuchKey) {
-			return nil, err
+	ops := new(client.PutObjectParams).WithObject(rawObject.Object()).WithPayloadReader(r)
+	oid, err := n.pool.PutObject(ctx, ops, n.BearerOpt(ctx))
+	if err != nil {
+		return nil, err
+	}
+
+	if p.Header[versionsDeleteMarkAttr] == delMarkFullObject {
+		if last := versions.getLast(); last != nil {
+			n.objCache.Delete(last.Address())
 		}
 	}
 
-	attributes := make([]*object.Attribute, 0, len(p.Header)+1)
+	meta, err := n.objectHead(ctx, bkt.CID, oid)
+	if err != nil {
+		return nil, err
+	}
 
-	unix := strconv.FormatInt(time.Now().UTC().Unix(), 10)
+	if err = n.objCache.Put(*meta); err != nil {
+		n.log.Error("couldn't cache an object", zap.Error(err))
+	}
 
+	for _, id := range idsToDeleteArr {
+		if err = n.objectDelete(ctx, bkt.CID, id); err != nil {
+			n.log.Warn("couldn't delete object",
+				zap.Stringer("version id", id),
+				zap.Error(err))
+		}
+	}
+
+	return &ObjectInfo{
+		id:       oid,
+		bucketID: bkt.CID,
+
+		Owner:         own,
+		Bucket:        p.Bucket,
+		Name:          p.Object,
+		Size:          p.Size,
+		Created:       time.Now(),
+		CreationEpoch: meta.CreationEpoch(),
+		Headers:       p.Header,
+		ContentType:   p.Header[api.ContentType],
+		HashSum:       meta.PayloadChecksum().String(),
+	}, nil
+}
+
+func formRawObject(p *PutObjectParams, bktID *cid.ID, own *owner.ID, obj string) *object.RawObject {
+	attributes := make([]*object.Attribute, 0, len(p.Header)+2)
 	filename := object.NewAttribute()
 	filename.SetKey(object.AttributeFileName)
 	filename.SetValue(obj)
 
 	createdAt := object.NewAttribute()
 	createdAt.SetKey(object.AttributeTimestamp)
-	createdAt.SetValue(unix)
+	createdAt.SetValue(strconv.FormatInt(time.Now().UTC().Unix(), 10))
 
 	attributes = append(attributes, filename, createdAt)
 
@@ -160,49 +219,155 @@ func (n *layer) objectPut(ctx context.Context, p *PutObjectParams) (*ObjectInfo,
 
 	raw := object.NewRaw()
 	raw.SetOwnerID(own)
-	raw.SetContainerID(bkt.CID)
+	raw.SetContainerID(bktID)
 	raw.SetAttributes(attributes...)
 
-	r := newDetector(p.Reader)
+	return raw
+}
 
-	ops := new(client.PutObjectParams).WithObject(raw.Object()).WithPayloadReader(r)
-	oid, err := n.pool.PutObject(
-		ctx,
-		ops,
-		n.BearerOpt(ctx),
-	)
+func updateCRDT2PSetHeaders(p *PutObjectParams, versions *objectVersions, versioningEnabled bool) []*object.ID {
+	var idsToDeleteArr []*object.ID
+	if versions == nil {
+		return idsToDeleteArr
+	}
+
+	if versioningEnabled {
+		if len(versions.addList) != 0 {
+			p.Header[versionsAddAttr] = versions.getAddHeader()
+		}
+
+		deleted := versions.getDelHeader()
+		// p.Header[versionsDelAttr] can be not empty when deleting specific version
+		if delAttr := p.Header[versionsDelAttr]; len(delAttr) != 0 {
+			if len(deleted) != 0 {
+				p.Header[versionsDelAttr] = deleted + "," + delAttr
+			} else {
+				p.Header[versionsDelAttr] = delAttr
+			}
+		} else if len(deleted) != 0 {
+			p.Header[versionsDelAttr] = deleted
+		}
+	} else {
+		versionsDeletedStr := versions.getDelHeader()
+		if len(versionsDeletedStr) != 0 {
+			versionsDeletedStr += ","
+		}
+
+		if lastVersion := versions.getLast(); lastVersion != nil {
+			p.Header[versionsDelAttr] = versionsDeletedStr + lastVersion.Version()
+			idsToDeleteArr = append(idsToDeleteArr, lastVersion.ID())
+		} else if len(versionsDeletedStr) != 0 {
+			p.Header[versionsDelAttr] = versionsDeletedStr
+		}
+
+		for _, version := range versions.objects {
+			if contains(versions.delList, version.Version()) {
+				idsToDeleteArr = append(idsToDeleteArr, version.ID())
+			}
+		}
+	}
+
+	return idsToDeleteArr
+}
+
+func (n *layer) headLastVersionIfNotDeleted(ctx context.Context, bkt *cache.BucketInfo, objectName string) (*ObjectInfo, error) {
+	if address := n.namesCache.Get(bkt.Name + "/" + objectName); address != nil {
+		if headInfo := n.objCache.Get(address); headInfo != nil {
+			return objInfoFromMeta(bkt, headInfo), nil
+		}
+	}
+
+	versions, err := n.headVersions(ctx, bkt, objectName)
 	if err != nil {
 		return nil, err
 	}
 
-	addr := object.NewAddress()
-	addr.SetObjectID(oid)
-	addr.SetContainerID(bkt.CID)
-	meta, err := n.objectHead(ctx, addr)
+	lastVersion := versions.getLast()
+	if lastVersion == nil {
+		return nil, apiErrors.GetAPIError(apiErrors.ErrNoSuchKey)
+	}
+
+	if err = n.namesCache.Put(lastVersion.NiceName(), lastVersion.Address()); err != nil {
+		n.log.Warn("couldn't put obj address to head cache",
+			zap.String("obj nice name", lastVersion.NiceName()),
+			zap.Error(err))
+	}
+
+	return lastVersion, nil
+}
+
+func (n *layer) headVersions(ctx context.Context, bkt *cache.BucketInfo, objectName string) (*objectVersions, error) {
+	ids, err := n.objectSearch(ctx, &findParams{cid: bkt.CID, val: objectName})
 	if err != nil {
 		return nil, err
 	}
 
-	if err = n.objCache.Put(addr, *meta); err != nil {
-		n.log.Error("couldn't cache an object", zap.Error(err))
+	if len(ids) == 0 {
+		return nil, apiErrors.GetAPIError(apiErrors.ErrNoSuchKey)
 	}
 
-	return &ObjectInfo{
-		id: oid,
+	versions := newObjectVersions(objectName)
+	for _, id := range ids {
+		meta, err := n.objectHead(ctx, bkt.CID, id)
+		if err != nil {
+			n.log.Warn("couldn't head object",
+				zap.Stringer("object id", id),
+				zap.Stringer("bucket id", bkt.CID),
+				zap.Error(err))
+			continue
+		}
+		if err = n.objCache.Put(*meta); err != nil {
+			n.log.Warn("couldn't put meta to objects cache",
+				zap.Stringer("object id", id),
+				zap.Stringer("bucket id", bkt.CID),
+				zap.Error(err))
+		}
 
-		Owner:       own,
-		Bucket:      p.Bucket,
-		Name:        p.Object,
-		Size:        p.Size,
-		Created:     time.Now(),
-		Headers:     p.Header,
-		ContentType: r.contentType,
-		HashSum:     meta.PayloadChecksum().String(),
-	}, nil
+		if oi := objectInfoFromMeta(bkt, meta, "", ""); oi != nil {
+			if isSystem(oi) {
+				continue
+			}
+			versions.appendVersion(oi)
+		}
+	}
+
+	return versions, nil
+}
+
+func (n *layer) headVersion(ctx context.Context, bkt *cache.BucketInfo, versionID string) (*ObjectInfo, error) {
+	oid := object.NewID()
+	if err := oid.Parse(versionID); err != nil {
+		return nil, err
+	}
+
+	if headInfo := n.objCache.Get(newAddress(bkt.CID, oid)); headInfo != nil {
+		return objInfoFromMeta(bkt, headInfo), nil
+	}
+
+	meta, err := n.objectHead(ctx, bkt.CID, oid)
+	if err != nil {
+		if strings.Contains(err.Error(), "not found") {
+			return nil, apiErrors.GetAPIError(apiErrors.ErrNoSuchVersion)
+		}
+		return nil, err
+	}
+
+	objInfo := objectInfoFromMeta(bkt, meta, "", "")
+	if err = n.objCache.Put(*meta); err != nil {
+		n.log.Warn("couldn't put obj to object cache",
+			zap.String("bucket name", objInfo.Bucket),
+			zap.Stringer("bucket cid", objInfo.CID()),
+			zap.String("object name", objInfo.Name),
+			zap.Stringer("object id", objInfo.ID()),
+			zap.Error(err))
+	}
+
+	return objInfo, nil
 }
 
 // objectDelete puts tombstone object into neofs.
-func (n *layer) objectDelete(ctx context.Context, address *object.Address) error {
+func (n *layer) objectDelete(ctx context.Context, cid *cid.ID, oid *object.ID) error {
+	address := newAddress(cid, oid)
 	dop := new(client.DeleteObjectParams)
 	dop.WithAddress(address)
 	n.objCache.Delete(address)
@@ -284,37 +449,16 @@ func (n *layer) ListObjectsV2(ctx context.Context, p *ListObjectsParamsV2) (*Lis
 }
 
 func (n *layer) listSortedObjectsFromNeoFS(ctx context.Context, p allObjectParams) ([]*ObjectInfo, error) {
-	var (
-		err       error
-		ids       []*object.ID
-		uniqNames = make(map[string]bool)
-	)
-
-	if ids, err = n.objectSearch(ctx, &findParams{cid: p.Bucket.CID}); err != nil {
+	versions, err := n.getAllObjectsVersions(ctx, p.Bucket, p.Prefix, p.Delimiter)
+	if err != nil {
 		return nil, err
 	}
 
-	objects := make([]*ObjectInfo, 0, len(ids))
-
-	for _, id := range ids {
-		addr := object.NewAddress()
-		addr.SetObjectID(id)
-		addr.SetContainerID(p.Bucket.CID)
-
-		meta, err := n.objectHead(ctx, addr)
-		if err != nil {
-			n.log.Warn("could not fetch object meta", zap.Error(err))
-			continue
-		}
-		if oi := objectInfoFromMeta(p.Bucket, meta, p.Prefix, p.Delimiter); oi != nil {
-			// use only unique dir names
-			if _, ok := uniqNames[oi.Name]; ok {
-				continue
-			}
-
-			uniqNames[oi.Name] = oi.isDir
-
-			objects = append(objects, oi)
+	objects := make([]*ObjectInfo, 0, len(versions))
+	for _, v := range versions {
+		lastVersion := v.getLast()
+		if lastVersion != nil {
+			objects = append(objects, lastVersion)
 		}
 	}
 
@@ -325,6 +469,59 @@ func (n *layer) listSortedObjectsFromNeoFS(ctx context.Context, p allObjectParam
 	return objects, nil
 }
 
+func (n *layer) getAllObjectsVersions(ctx context.Context, bkt *cache.BucketInfo, prefix, delimiter string) (map[string]*objectVersions, error) {
+	ids, err := n.objectSearch(ctx, &findParams{cid: bkt.CID})
+	if err != nil {
+		return nil, err
+	}
+
+	versions := make(map[string]*objectVersions, len(ids)/2)
+	for _, id := range ids {
+		meta, err := n.objectHead(ctx, bkt.CID, id)
+		if err != nil {
+			n.log.Warn("could not fetch object meta", zap.Error(err))
+			continue
+		}
+		if oi := objectInfoFromMeta(bkt, meta, prefix, delimiter); oi != nil {
+			if isSystem(oi) {
+				continue
+			}
+
+			objVersions, ok := versions[oi.Name]
+			if !ok {
+				objVersions = newObjectVersions(oi.Name)
+			}
+			objVersions.appendVersion(oi)
+			versions[oi.Name] = objVersions
+		}
+	}
+
+	return versions, nil
+}
+
+func getExistedVersions(versions *objectVersions) []string {
+	var res []string
+	for _, add := range versions.addList {
+		if !contains(versions.delList, add) {
+			res = append(res, add)
+		}
+	}
+	return res
+}
+
+func splitVersions(header string) []string {
+	if len(header) == 0 {
+		return nil
+	}
+
+	return strings.Split(header, ",")
+}
+
+func isSystem(obj *ObjectInfo) bool {
+	return len(obj.Headers[objectSystemAttributeName]) > 0 ||
+		len(obj.Headers[attrVersionsIgnore]) > 0
+}
+
 func trimAfterObjectName(startAfter string, objects []*ObjectInfo) []*ObjectInfo {
 	if len(objects) != 0 && objects[len(objects)-1].Name <= startAfter {
 		return nil
@@ -366,7 +563,7 @@ func triageObjects(allObjects []*ObjectInfo) (prefixes []string, objects []*Obje
 func (n *layer) listAllObjects(ctx context.Context, p ListObjectsParamsCommon) ([]*ObjectInfo, error) {
 	var (
 		err        error
-		bkt        *BucketInfo
+		bkt        *cache.BucketInfo
 		cacheKey   cacheOptions
 		allObjects []*ObjectInfo
 	)
@@ -375,11 +572,11 @@ func (n *layer) listAllObjects(ctx context.Context, p ListObjectsParamsCommon) (
 		return nil, err
 	}
 
-	if cacheKey, err = createKey(ctx, bkt.CID, p.Prefix, p.Delimiter); err != nil {
+	if cacheKey, err = createKey(ctx, bkt.CID, listObjectsMethod, p.Prefix, p.Delimiter); err != nil {
 		return nil, err
 	}
 
-	allObjects = n.listObjCache.Get(cacheKey)
+	allObjects = n.listsCache.Get(cacheKey)
 
 	if allObjects == nil {
 		allObjects, err = n.listSortedObjectsFromNeoFS(ctx, allObjectParams{
@@ -392,8 +589,18 @@ func (n *layer) listAllObjects(ctx context.Context, p ListObjectsParamsCommon) (
 		}
 
 		// putting to cache a copy of allObjects because allObjects can be modified further
-		n.listObjCache.Put(cacheKey, append([]*ObjectInfo(nil), allObjects...))
+		n.listsCache.Put(cacheKey, append([]*ObjectInfo(nil), allObjects...))
 	}
 
 	return allObjects, nil
 }
+
+func (n *layer) isVersioningEnabled(ctx context.Context, bktInfo *cache.BucketInfo) bool {
+	settings, err := n.getBucketSettings(ctx, bktInfo)
+	if err != nil {
+		n.log.Warn("couldn't get versioning settings object", zap.Error(err))
+		return false
+	}
+
+	return settings.VersioningEnabled
+}

api/layer/object_list_cache.go

@@ -30,6 +30,11 @@ type (
 // DefaultObjectsListCacheLifetime is a default lifetime of entries in cache of ListObjects.
 const DefaultObjectsListCacheLifetime = time.Second * 60
 
+const (
+	listObjectsMethod  = "listObjects"
+	listVersionsMethod = "listVersions"
+)
+
 type (
 	listObjectsCache struct {
 		cacheLifetime time.Duration
@@ -40,6 +45,7 @@ type (
 		list []*ObjectInfo
 	}
 	cacheOptions struct {
+		method    string
 		key       string
 		delimiter string
 		prefix    string
@@ -78,12 +84,13 @@ func (l *listObjectsCache) Put(key cacheOptions, objects []*ObjectInfo) {
 	})
 }
 
-func createKey(ctx context.Context, cid *cid.ID, prefix, delimiter string) (cacheOptions, error) {
+func createKey(ctx context.Context, cid *cid.ID, method, prefix, delimiter string) (cacheOptions, error) {
 	box, err := GetBoxData(ctx)
 	if err != nil {
 		return cacheOptions{}, err
 	}
 	p := cacheOptions{
+		method:    method,
 		key:       box.Gate.AccessKey + cid.String(),
 		delimiter: delimiter,
 		prefix:    prefix,

api/layer/util.go

@@ -8,26 +8,30 @@ import (
 	"strings"
 	"time"
 
+	cid "github.com/nspcc-dev/neofs-api-go/pkg/container/id"
 	"github.com/nspcc-dev/neofs-api-go/pkg/object"
 	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
 	"github.com/nspcc-dev/neofs-s3-gw/api"
+	"github.com/nspcc-dev/neofs-s3-gw/api/cache"
 	"github.com/nspcc-dev/neofs-s3-gw/creds/accessbox"
 )
 
 type (
 	// ObjectInfo holds S3 object data.
 	ObjectInfo struct {
-		id    *object.ID
-		isDir bool
+		id       *object.ID
+		bucketID *cid.ID
+		isDir    bool
 
-		Bucket      string
-		Name        string
-		Size        int64
-		ContentType string
-		Created     time.Time
-		HashSum     string
-		Owner       *owner.ID
-		Headers     map[string]string
+		Bucket        string
+		Name          string
+		Size          int64
+		ContentType   string
+		Created       time.Time
+		CreationEpoch uint64
+		HashSum       string
+		Owner         *owner.ID
+		Headers       map[string]string
 	}
 
 	// ListObjectsInfo contains common fields of data for ListObjectsV1 and ListObjectsV2.
@@ -51,29 +55,19 @@ type (
 
 	// ObjectVersionInfo stores info about objects versions.
 	ObjectVersionInfo struct {
-		Object    *ObjectInfo
-		IsLatest  bool
-		VersionID string
-	}
-
-	// DeletedObjectInfo stores info about deleted versions of objects.
-	DeletedObjectInfo struct {
-		Owner        *owner.ID
-		Key          string
-		VersionID    string
-		IsLatest     bool
-		LastModified string
+		Object   *ObjectInfo
+		IsLatest bool
 	}
 
 	// ListObjectVersionsInfo stores info and list of objects' versions.
 	ListObjectVersionsInfo struct {
-		CommonPrefixes      []*string
+		CommonPrefixes      []string
 		IsTruncated         bool
 		KeyMarker           string
 		NextKeyMarker       string
 		NextVersionIDMarker string
 		Version             []*ObjectVersionInfo
-		DeleteMarker        []*DeletedObjectInfo
+		DeleteMarker        []*ObjectVersionInfo
 		VersionIDMarker     string
 	}
 )
@@ -91,7 +85,11 @@ func userHeaders(attrs []*object.Attribute) map[string]string {
 	return result
 }
 
-func objectInfoFromMeta(bkt *BucketInfo, meta *object.Object, prefix, delimiter string) *ObjectInfo {
+func objInfoFromMeta(bkt *cache.BucketInfo, meta *object.Object) *ObjectInfo {
+	return objectInfoFromMeta(bkt, meta, "", "")
+}
+
+func objectInfoFromMeta(bkt *cache.BucketInfo, meta *object.Object, prefix, delimiter string) *ObjectInfo {
 	var (
 		isDir    bool
 		size     int64
@@ -133,28 +131,22 @@ func objectInfoFromMeta(bkt *BucketInfo, meta *object.Object, prefix, delimiter
 	}
 
 	return &ObjectInfo{
-		id:    meta.ID(),
-		isDir: isDir,
+		id:       meta.ID(),
+		bucketID: bkt.CID,
+		isDir:    isDir,
 
-		Bucket:      bkt.Name,
-		Name:        filename,
-		Created:     creation,
-		ContentType: mimeType,
-		Headers:     userHeaders,
-		Owner:       meta.OwnerID(),
-		Size:        size,
-		HashSum:     meta.PayloadChecksum().String(),
+		Bucket:        bkt.Name,
+		Name:          filename,
+		Created:       creation,
+		CreationEpoch: meta.CreationEpoch(),
+		ContentType:   mimeType,
+		Headers:       userHeaders,
+		Owner:         meta.OwnerID(),
+		Size:          size,
+		HashSum:       meta.PayloadChecksum().String(),
 	}
 }
 
-func objectVersionInfoFromMeta(bkt *BucketInfo, meta *object.Object, prefix, delimiter string) *ObjectVersionInfo {
-	oi := objectInfoFromMeta(bkt, meta, prefix, delimiter)
-	if oi == nil {
-		return nil
-	}
-	return &ObjectVersionInfo{Object: oi, IsLatest: true, VersionID: unversionedObjectVersionID}
-}
-
 func filenameFromObject(o *object.Object) string {
 	var name = o.ID().String()
 	for _, attr := range o.Attributes() {
@@ -174,6 +166,18 @@ func NameFromString(name string) (string, string) {
 // ID returns object ID from ObjectInfo.
 func (o *ObjectInfo) ID() *object.ID { return o.id }
 
+// Version returns object version from ObjectInfo.
+func (o *ObjectInfo) Version() string { return o.id.String() }
+
+// NiceName returns object name for cache.
+func (o *ObjectInfo) NiceName() string { return o.Bucket + "/" + o.Name }
+
+// Address returns object address.
+func (o *ObjectInfo) Address() *object.Address { return newAddress(o.bucketID, o.id) }
+
+// CID returns bucket ID from ObjectInfo.
+func (o *ObjectInfo) CID() *cid.ID { return o.bucketID }
+
 // IsDir allows to check if object is a directory.
 func (o *ObjectInfo) IsDir() bool { return o.isDir }
 

api/layer/util_test.go

@@ -9,6 +9,7 @@ import (
 	cid "github.com/nspcc-dev/neofs-api-go/pkg/container/id"
 	"github.com/nspcc-dev/neofs-api-go/pkg/object"
 	"github.com/nspcc-dev/neofs-api-go/pkg/owner"
+	"github.com/nspcc-dev/neofs-s3-gw/api/cache"
 	"github.com/stretchr/testify/require"
 )
 
@@ -19,7 +20,7 @@ var (
 	defaultTestContentType   = http.DetectContentType(defaultTestPayload)
 )
 
-func newTestObject(oid *object.ID, bkt *BucketInfo, name string) *object.Object {
+func newTestObject(oid *object.ID, bkt *cache.BucketInfo, name string) *object.Object {
 	filename := object.NewAttribute()
 	filename.SetKey(object.AttributeFileName)
 	filename.SetValue(name)
@@ -43,11 +44,12 @@ func newTestObject(oid *object.ID, bkt *BucketInfo, name string) *object.Object
 	return raw.Object()
 }
 
-func newTestInfo(oid *object.ID, bkt *BucketInfo, name string, isDir bool) *ObjectInfo {
+func newTestInfo(oid *object.ID, bkt *cache.BucketInfo, name string, isDir bool) *ObjectInfo {
 	info := &ObjectInfo{
 		id:          oid,
 		Name:        name,
 		Bucket:      bkt.Name,
+		bucketID:    bkt.CID,
 		Size:        defaultTestPayloadLength,
 		ContentType: defaultTestContentType,
 		Created:     time.Unix(defaultTestCreated.Unix(), 0),
@@ -70,7 +72,7 @@ func Test_objectInfoFromMeta(t *testing.T) {
 	oid := object.NewID()
 	containerID := cid.New()
 
-	bkt := &BucketInfo{
+	bkt := &cache.BucketInfo{
 		Name:    "test-container",
 		CID:     containerID,
 		Owner:   uid,

api/layer/versioning.go

@@ -0,0 +1,325 @@
+package layer
+
+import (
+	"context"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/nspcc-dev/neofs-api-go/pkg/client"
+	"github.com/nspcc-dev/neofs-api-go/pkg/object"
+	"github.com/nspcc-dev/neofs-s3-gw/api/cache"
+	"github.com/nspcc-dev/neofs-s3-gw/api/errors"
+	"go.uber.org/zap"
+)
+
+type objectVersions struct {
+	name     string
+	objects  []*ObjectInfo
+	addList  []string
+	delList  []string
+	isSorted bool
+}
+
+const (
+	unversionedObjectVersionID    = "null"
+	objectSystemAttributeName     = "S3-System-name"
+	attrVersionsIgnore            = "S3-Versions-ignore"
+	attrSettingsVersioningEnabled = "S3-Settings-Versioning-enabled"
+	versionsDelAttr               = "S3-Versions-del"
+	versionsAddAttr               = "S3-Versions-add"
+	versionsDeleteMarkAttr        = "S3-Versions-delete-mark"
+	delMarkFullObject             = "*"
+)
+
+func newObjectVersions(name string) *objectVersions {
+	return &objectVersions{name: name}
+}
+
+func (v *objectVersions) appendVersion(oi *ObjectInfo) {
+	addVers := append(splitVersions(oi.Headers[versionsAddAttr]), oi.Version())
+	delVers := splitVersions(oi.Headers[versionsDelAttr])
+	v.objects = append(v.objects, oi)
+	for _, add := range addVers {
+		if !contains(v.addList, add) {
+			v.addList = append(v.addList, add)
+		}
+	}
+	for _, del := range delVers {
+		if !contains(v.delList, del) {
+			v.delList = append(v.delList, del)
+		}
+	}
+	v.isSorted = false
+}
+
+func (v *objectVersions) sort() {
+	if !v.isSorted {
+		sort.Slice(v.objects, func(i, j int) bool {
+			return less(v.objects[i], v.objects[j])
+		})
+		v.isSorted = true
+	}
+}
+
+func (v *objectVersions) getLast() *ObjectInfo {
+	if len(v.objects) == 0 {
+		return nil
+	}
+
+	v.sort()
+	existedVersions := getExistedVersions(v)
+	for i := len(v.objects) - 1; i >= 0; i-- {
+		if contains(existedVersions, v.objects[i].Version()) {
+			delMarkHeader := v.objects[i].Headers[versionsDeleteMarkAttr]
+			if delMarkHeader == "" {
+				return v.objects[i]
+			}
+			if delMarkHeader == delMarkFullObject {
+				return nil
+			}
+		}
+	}
+
+	return nil
+}
+
+func (v *objectVersions) getFiltered() []*ObjectInfo {
+	if len(v.objects) == 0 {
+		return nil
+	}
+
+	v.sort()
+	existedVersions := getExistedVersions(v)
+	res := make([]*ObjectInfo, 0, len(v.objects))
+
+	for _, version := range v.objects {
+		delMark := version.Headers[versionsDeleteMarkAttr]
+		if contains(existedVersions, version.Version()) && (delMark == delMarkFullObject || delMark == "") {
+			res = append(res, version)
+		}
+	}
+
+	return res
+}
+
+func (v *objectVersions) getAddHeader() string {
+	return strings.Join(v.addList, ",")
+}
+
+func (v *objectVersions) getDelHeader() string {
+	return strings.Join(v.delList, ",")
+}
+
+func (n *layer) PutBucketVersioning(ctx context.Context, p *PutVersioningParams) (*ObjectInfo, error) {
+	bucketInfo, err := n.GetBucketInfo(ctx, p.Bucket)
+	if err != nil {
+		return nil, err
+	}
+
+	objectInfo, err := n.getSettingsObjectInfo(ctx, bucketInfo)
+	if err != nil {
+		n.log.Warn("couldn't get bucket version settings object, new one will be created",
+			zap.String("bucket_name", bucketInfo.Name),
+			zap.Stringer("cid", bucketInfo.CID),
+			zap.Error(err))
+	}
+
+	attributes := make([]*object.Attribute, 0, 3)
+
+	filename := object.NewAttribute()
+	filename.SetKey(objectSystemAttributeName)
+	filename.SetValue(bucketInfo.SettingsObjectName())
+
+	createdAt := object.NewAttribute()
+	createdAt.SetKey(object.AttributeTimestamp)
+	createdAt.SetValue(strconv.FormatInt(time.Now().UTC().Unix(), 10))
+
+	versioningIgnore := object.NewAttribute()
+	versioningIgnore.SetKey(attrVersionsIgnore)
+	versioningIgnore.SetValue(strconv.FormatBool(true))
+
+	settingsVersioningEnabled := object.NewAttribute()
+	settingsVersioningEnabled.SetKey(attrSettingsVersioningEnabled)
+	settingsVersioningEnabled.SetValue(strconv.FormatBool(p.Settings.VersioningEnabled))
+
+	attributes = append(attributes, filename, createdAt, versioningIgnore, settingsVersioningEnabled)
+
+	raw := object.NewRaw()
+	raw.SetOwnerID(bucketInfo.Owner)
+	raw.SetContainerID(bucketInfo.CID)
+	raw.SetAttributes(attributes...)
+
+	ops := new(client.PutObjectParams).WithObject(raw.Object())
+	oid, err := n.pool.PutObject(ctx, ops, n.BearerOpt(ctx))
+	if err != nil {
+		return nil, err
+	}
+
+	meta, err := n.objectHead(ctx, bucketInfo.CID, oid)
+	if err != nil {
+		return nil, err
+	}
+
+	if err = n.systemCache.Put(bucketInfo.SettingsObjectKey(), meta); err != nil {
+		n.log.Error("couldn't cache system object", zap.Error(err))
+	}
+
+	if objectInfo != nil {
+		if err = n.objectDelete(ctx, bucketInfo.CID, objectInfo.ID()); err != nil {
+			return nil, err
+		}
+	}
+
+	return objectInfoFromMeta(bucketInfo, meta, "", ""), nil
+}
+
+func (n *layer) GetBucketVersioning(ctx context.Context, bucketName string) (*BucketSettings, error) {
+	bktInfo, err := n.GetBucketInfo(ctx, bucketName)
+	if err != nil {
+		return nil, err
+	}
+
+	return n.getBucketSettings(ctx, bktInfo)
+}
+
+func (n *layer) ListObjectVersions(ctx context.Context, p *ListObjectVersionsParams) (*ListObjectVersionsInfo, error) {
+	var versions map[string]*objectVersions
+	res := &ListObjectVersionsInfo{}
+
+	bkt, err := n.GetBucketInfo(ctx, p.Bucket)
+	if err != nil {
+		return nil, err
+	}
+
+	cacheKey, err := createKey(ctx, bkt.CID, listVersionsMethod, p.Prefix, p.Delimiter)
+	if err != nil {
+		return nil, err
+	}
+
+	allObjects := n.listsCache.Get(cacheKey)
+	if allObjects == nil {
+		versions, err = n.getAllObjectsVersions(ctx, bkt, p.Prefix, p.Delimiter)
+		if err != nil {
+			return nil, err
+		}
+
+		sortedNames := make([]string, 0, len(versions))
+		for k := range versions {
+			sortedNames = append(sortedNames, k)
+		}
+		sort.Strings(sortedNames)
+
+		allObjects = make([]*ObjectInfo, 0, p.MaxKeys)
+		for _, name := range sortedNames {
+			allObjects = append(allObjects, versions[name].getFiltered()...)
+		}
+
+		// putting to cache a copy of allObjects because allObjects can be modified further
+		n.listsCache.Put(cacheKey, append([]*ObjectInfo(nil), allObjects...))
+	}
+
+	for i, obj := range allObjects {
+		if obj.Name >= p.KeyMarker && obj.Version() >= p.VersionIDMarker {
+			allObjects = allObjects[i:]
+			break
+		}
+	}
+
+	res.CommonPrefixes, allObjects = triageObjects(allObjects)
+
+	if len(allObjects) > p.MaxKeys {
+		res.IsTruncated = true
+		res.NextKeyMarker = allObjects[p.MaxKeys].Name
+		res.NextVersionIDMarker = allObjects[p.MaxKeys].Version()
+
+		allObjects = allObjects[:p.MaxKeys]
+		res.KeyMarker = allObjects[p.MaxKeys-1].Name
+		res.VersionIDMarker = allObjects[p.MaxKeys-1].Version()
+	}
+
+	objects := make([]*ObjectVersionInfo, len(allObjects))
+	for i, obj := range allObjects {
+		objects[i] = &ObjectVersionInfo{Object: obj}
+		if i == len(allObjects)-1 || allObjects[i+1].Name != obj.Name {
+			objects[i].IsLatest = true
+		}
+	}
+
+	res.Version, res.DeleteMarker = triageVersions(objects)
+	return res, nil
+}
+
+func triageVersions(objVersions []*ObjectVersionInfo) ([]*ObjectVersionInfo, []*ObjectVersionInfo) {
+	if len(objVersions) == 0 {
+		return nil, nil
+	}
+
+	var resVersion []*ObjectVersionInfo
+	var resDelMarkVersions []*ObjectVersionInfo
+
+	for _, version := range objVersions {
+		if version.Object.Headers[versionsDeleteMarkAttr] == delMarkFullObject {
+			resDelMarkVersions = append(resDelMarkVersions, version)
+		} else {
+			resVersion = append(resVersion, version)
+		}
+	}
+
+	return resVersion, resDelMarkVersions
+}
+
+func less(ov1, ov2 *ObjectInfo) bool {
+	if ov1.CreationEpoch == ov2.CreationEpoch {
+		return ov1.Version() < ov2.Version()
+	}
+	return ov1.CreationEpoch < ov2.CreationEpoch
+}
+
+func contains(list []string, elem string) bool {
+	for _, item := range list {
+		if elem == item {
+			return true
+		}
+	}
+	return false
+}
+
+func (n *layer) getBucketSettings(ctx context.Context, bktInfo *cache.BucketInfo) (*BucketSettings, error) {
+	objInfo, err := n.getSettingsObjectInfo(ctx, bktInfo)
+	if err != nil {
+		return nil, err
+	}
+
+	return objectInfoToBucketSettings(objInfo), nil
+}
+
+func objectInfoToBucketSettings(info *ObjectInfo) *BucketSettings {
+	res := &BucketSettings{}
+
+	enabled, ok := info.Headers[attrSettingsVersioningEnabled]
+	if ok {
+		if parsed, err := strconv.ParseBool(enabled); err == nil {
+			res.VersioningEnabled = parsed
+		}
+	}
+	return res
+}
+
+func (n *layer) checkVersionsExist(ctx context.Context, bkt *cache.BucketInfo, obj *VersionedObject) (*object.ID, error) {
+	id := object.NewID()
+	if err := id.Parse(obj.VersionID); err != nil {
+		return nil, errors.GetAPIError(errors.ErrInvalidVersion)
+	}
+
+	versions, err := n.headVersions(ctx, bkt, obj.Name)
+	if err != nil {
+		return nil, err
+	}
+	if !contains(getExistedVersions(versions), obj.VersionID) {
+		return nil, errors.GetAPIError(errors.ErrInvalidVersion)
+	}
+
+	return id, nil
+}

api/layer/versioning_test.go

@@ -0,0 +1,610 @@
+package layer
+
+import (
+	"bytes"
+	"context"
+	"crypto/rand"
+	"crypto/sha256"
+	"fmt"
+	"io"
+	"strings"
+	"testing"
+
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neofs-api-go/pkg/acl/eacl"
+	"github.com/nspcc-dev/neofs-api-go/pkg/client"
+	"github.com/nspcc-dev/neofs-api-go/pkg/container"
+	cid "github.com/nspcc-dev/neofs-api-go/pkg/container/id"
+	"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/session"
+	"github.com/nspcc-dev/neofs-api-go/pkg/token"
+	"github.com/nspcc-dev/neofs-s3-gw/api"
+	"github.com/nspcc-dev/neofs-s3-gw/api/cache"
+	"github.com/nspcc-dev/neofs-s3-gw/creds/accessbox"
+	"github.com/nspcc-dev/neofs-sdk-go/pkg/logger"
+	"github.com/nspcc-dev/neofs-sdk-go/pkg/pool"
+	"github.com/stretchr/testify/require"
+)
+
+type testPool struct {
+	objects      map[string]*object.Object
+	containers   map[string]*container.Container
+	currentEpoch uint64
+}
+
+func newTestPool() *testPool {
+	return &testPool{
+		objects:    make(map[string]*object.Object),
+		containers: make(map[string]*container.Container),
+	}
+}
+
+func (t *testPool) PutObject(ctx context.Context, params *client.PutObjectParams, option ...client.CallOption) (*object.ID, error) {
+	b := make([]byte, 32)
+	if _, err := io.ReadFull(rand.Reader, b); err != nil {
+		return nil, err
+	}
+
+	oid := object.NewID()
+	oid.SetSHA256(sha256.Sum256(b))
+
+	raw := object.NewRawFrom(params.Object())
+	raw.SetID(oid)
+	raw.SetCreationEpoch(t.currentEpoch)
+	t.currentEpoch++
+
+	if params.PayloadReader() != nil {
+		all, err := io.ReadAll(params.PayloadReader())
+		if err != nil {
+			return nil, err
+		}
+		raw.SetPayload(all)
+	}
+
+	addr := newAddress(raw.ContainerID(), raw.ID())
+	t.objects[addr.String()] = raw.Object()
+	return raw.ID(), nil
+}
+
+func (t *testPool) DeleteObject(ctx context.Context, params *client.DeleteObjectParams, option ...client.CallOption) error {
+	delete(t.objects, params.Address().String())
+	return nil
+}
+
+func (t *testPool) GetObject(ctx context.Context, params *client.GetObjectParams, option ...client.CallOption) (*object.Object, error) {
+	if obj, ok := t.objects[params.Address().String()]; ok {
+		if params.PayloadWriter() != nil {
+			_, err := params.PayloadWriter().Write(obj.Payload())
+			if err != nil {
+				return nil, err
+			}
+		}
+		return obj, nil
+	}
+
+	return nil, fmt.Errorf("object not found " + params.Address().String())
+}
+
+func (t *testPool) GetObjectHeader(ctx context.Context, params *client.ObjectHeaderParams, option ...client.CallOption) (*object.Object, error) {
+	p := new(client.GetObjectParams).WithAddress(params.Address())
+	return t.GetObject(ctx, p)
+}
+
+func (t *testPool) ObjectPayloadRangeData(ctx context.Context, params *client.RangeDataParams, option ...client.CallOption) ([]byte, error) {
+	panic("implement me")
+}
+
+func (t *testPool) ObjectPayloadRangeSHA256(ctx context.Context, params *client.RangeChecksumParams, option ...client.CallOption) ([][32]byte, error) {
+	panic("implement me")
+}
+
+func (t *testPool) ObjectPayloadRangeTZ(ctx context.Context, params *client.RangeChecksumParams, option ...client.CallOption) ([][64]byte, error) {
+	panic("implement me")
+}
+
+func (t *testPool) SearchObject(ctx context.Context, params *client.SearchObjectParams, option ...client.CallOption) ([]*object.ID, error) {
+	cidStr := params.ContainerID().String()
+
+	var res []*object.ID
+
+	if len(params.SearchFilters()) == 1 {
+		for k, v := range t.objects {
+			if strings.Contains(k, cidStr) {
+				res = append(res, v.ID())
+			}
+		}
+		return res, nil
+	}
+
+	filter := params.SearchFilters()[1]
+	if len(params.SearchFilters()) != 2 || filter.Operation() != object.MatchStringEqual ||
+		(filter.Header() != object.AttributeFileName && filter.Header() != objectSystemAttributeName) {
+		return nil, fmt.Errorf("usupported filters")
+	}
+
+	for k, v := range t.objects {
+		if strings.Contains(k, cidStr) && isMatched(v.Attributes(), filter) {
+			res = append(res, v.ID())
+		}
+	}
+
+	return res, nil
+}
+
+func isMatched(attributes []*object.Attribute, filter object.SearchFilter) bool {
+	for _, attr := range attributes {
+		if attr.Key() == filter.Header() && attr.Value() == filter.Value() {
+			return true
+		}
+	}
+
+	return false
+}
+
+func (t *testPool) PutContainer(ctx context.Context, container *container.Container, option ...client.CallOption) (*cid.ID, error) {
+	b := make([]byte, 32)
+	if _, err := io.ReadFull(rand.Reader, b); err != nil {
+		return nil, err
+	}
+
+	id := cid.New()
+	id.SetSHA256(sha256.Sum256(b))
+	t.containers[id.String()] = container
+
+	return id, nil
+}
+
+func (t *testPool) GetContainer(ctx context.Context, id *cid.ID, option ...client.CallOption) (*container.Container, error) {
+	for k, v := range t.containers {
+		if k == id.String() {
+			return v, nil
+		}
+	}
+
+	return nil, fmt.Errorf("container not found " + id.String())
+}
+
+func (t *testPool) ListContainers(ctx context.Context, id *owner.ID, option ...client.CallOption) ([]*cid.ID, error) {
+	var res []*cid.ID
+	for k := range t.containers {
+		cID := cid.New()
+		if err := cID.Parse(k); err != nil {
+			return nil, err
+		}
+		res = append(res, cID)
+	}
+
+	return res, nil
+}
+
+func (t *testPool) DeleteContainer(ctx context.Context, id *cid.ID, option ...client.CallOption) error {
+	delete(t.containers, id.String())
+	return nil
+}
+
+func (t *testPool) GetEACL(ctx context.Context, id *cid.ID, option ...client.CallOption) (*client.EACLWithSignature, error) {
+	panic("implement me")
+}
+
+func (t *testPool) SetEACL(ctx context.Context, table *eacl.Table, option ...client.CallOption) error {
+	panic("implement me")
+}
+
+func (t *testPool) AnnounceContainerUsedSpace(ctx context.Context, announcements []container.UsedSpaceAnnouncement, option ...client.CallOption) error {
+	panic("implement me")
+}
+
+func (t *testPool) Connection() (client.Client, *session.Token, error) {
+	panic("implement me")
+}
+
+func (t *testPool) OwnerID() *owner.ID {
+	return nil
+}
+
+func (t *testPool) WaitForContainerPresence(ctx context.Context, id *cid.ID, params *pool.ContainerPollingParams) error {
+	return nil
+}
+
+func (tc *testContext) putObject(content []byte) *ObjectInfo {
+	objInfo, err := tc.layer.PutObject(tc.ctx, &PutObjectParams{
+		Bucket: tc.bkt,
+		Object: tc.obj,
+		Size:   int64(len(content)),
+		Reader: bytes.NewReader(content),
+		Header: make(map[string]string),
+	})
+	require.NoError(tc.t, err)
+
+	return objInfo
+}
+
+func (tc *testContext) getObject(objectName, versionID string, needError bool) (*ObjectInfo, []byte) {
+	objInfo, err := tc.layer.GetObjectInfo(tc.ctx, &HeadObjectParams{
+		Bucket:    tc.bkt,
+		Object:    objectName,
+		VersionID: versionID,
+	})
+	if needError {
+		require.Error(tc.t, err)
+		return nil, nil
+	}
+	require.NoError(tc.t, err)
+
+	content := bytes.NewBuffer(nil)
+	err = tc.layer.GetObject(tc.ctx, &GetObjectParams{
+		ObjectInfo: objInfo,
+		Writer:     content,
+		VersionID:  versionID,
+	})
+	require.NoError(tc.t, err)
+
+	return objInfo, content.Bytes()
+}
+
+func (tc *testContext) deleteObject(objectName, versionID string) {
+	errs := tc.layer.DeleteObjects(tc.ctx, tc.bkt, []*VersionedObject{
+		{Name: objectName, VersionID: versionID},
+	})
+	for _, err := range errs {
+		require.NoError(tc.t, err)
+	}
+}
+
+func (tc *testContext) listObjectsV1() []*ObjectInfo {
+	res, err := tc.layer.ListObjectsV1(tc.ctx, &ListObjectsParamsV1{
+		ListObjectsParamsCommon: ListObjectsParamsCommon{
+			Bucket:  tc.bkt,
+			MaxKeys: 1000,
+		},
+	})
+	require.NoError(tc.t, err)
+	return res.Objects
+}
+
+func (tc *testContext) listObjectsV2() []*ObjectInfo {
+	res, err := tc.layer.ListObjectsV2(tc.ctx, &ListObjectsParamsV2{
+		ListObjectsParamsCommon: ListObjectsParamsCommon{
+			Bucket:  tc.bkt,
+			MaxKeys: 1000,
+		},
+	})
+	require.NoError(tc.t, err)
+	return res.Objects
+}
+
+func (tc *testContext) listVersions() *ListObjectVersionsInfo {
+	res, err := tc.layer.ListObjectVersions(tc.ctx, &ListObjectVersionsParams{
+		Bucket:  tc.bkt,
+		MaxKeys: 1000,
+	})
+	require.NoError(tc.t, err)
+	return res
+}
+
+func (tc *testContext) checkListObjects(ids ...*object.ID) {
+	objs := tc.listObjectsV1()
+	require.Equal(tc.t, len(ids), len(objs))
+	for _, id := range ids {
+		require.Contains(tc.t, ids, id)
+	}
+
+	objs = tc.listObjectsV2()
+	require.Equal(tc.t, len(ids), len(objs))
+	for _, id := range ids {
+		require.Contains(tc.t, ids, id)
+	}
+}
+
+type testContext struct {
+	t        *testing.T
+	ctx      context.Context
+	layer    Client
+	bkt      string
+	bktID    *cid.ID
+	obj      string
+	testPool *testPool
+}
+
+func prepareContext(t *testing.T) *testContext {
+	key, err := keys.NewPrivateKey()
+	require.NoError(t, err)
+
+	ctx := context.WithValue(context.Background(), api.BoxData, &accessbox.Box{
+		Gate: &accessbox.GateData{
+			BearerToken: token.NewBearerToken(),
+			GateKey:     key.PublicKey(),
+		},
+	})
+	l, err := logger.New(logger.WithTraceLevel("panic"))
+	require.NoError(t, err)
+	tp := newTestPool()
+
+	bktName := "testbucket1"
+	cnr := container.New(container.WithAttribute(container.AttributeName, bktName))
+	bktID, err := tp.PutContainer(ctx, cnr)
+	require.NoError(t, err)
+
+	return &testContext{
+		ctx: ctx,
+		layer: NewLayer(l, tp, &CacheConfig{
+			Size:                cache.DefaultObjectsCacheSize,
+			Lifetime:            cache.DefaultObjectsCacheLifetime,
+			ListObjectsLifetime: DefaultObjectsListCacheLifetime},
+		),
+		bkt:      bktName,
+		bktID:    bktID,
+		obj:      "obj1",
+		t:        t,
+		testPool: tp,
+	}
+}
+
+func TestSimpleVersioning(t *testing.T) {
+	tc := prepareContext(t)
+	_, err := tc.layer.PutBucketVersioning(tc.ctx, &PutVersioningParams{
+		Bucket:   tc.bkt,
+		Settings: &BucketSettings{VersioningEnabled: true},
+	})
+	require.NoError(t, err)
+
+	obj1Content1 := []byte("content obj1 v1")
+	obj1v1 := tc.putObject(obj1Content1)
+
+	obj1Content2 := []byte("content obj1 v2")
+	obj1v2 := tc.putObject(obj1Content2)
+
+	objv2, buffer2 := tc.getObject(tc.obj, "", false)
+	require.Equal(t, obj1Content2, buffer2)
+	require.Contains(t, objv2.Headers[versionsAddAttr], obj1v1.ID().String())
+
+	_, buffer1 := tc.getObject(tc.obj, obj1v1.ID().String(), false)
+	require.Equal(t, obj1Content1, buffer1)
+
+	tc.checkListObjects(obj1v2.ID())
+}
+
+func TestSimpleNoVersioning(t *testing.T) {
+	tc := prepareContext(t)
+
+	obj1Content1 := []byte("content obj1 v1")
+	obj1v1 := tc.putObject(obj1Content1)
+
+	obj1Content2 := []byte("content obj1 v2")
+	obj1v2 := tc.putObject(obj1Content2)
+
+	objv2, buffer2 := tc.getObject(tc.obj, "", false)
+	require.Equal(t, obj1Content2, buffer2)
+	require.Contains(t, objv2.Headers[versionsDelAttr], obj1v1.ID().String())
+
+	tc.getObject(tc.obj, obj1v1.ID().String(), true)
+	tc.checkListObjects(obj1v2.ID())
+}
+
+func TestVersioningDeleteObject(t *testing.T) {
+	tc := prepareContext(t)
+	_, err := tc.layer.PutBucketVersioning(tc.ctx, &PutVersioningParams{
+		Bucket:   tc.bkt,
+		Settings: &BucketSettings{VersioningEnabled: true},
+	})
+	require.NoError(t, err)
+
+	tc.putObject([]byte("content obj1 v1"))
+	tc.putObject([]byte("content obj1 v2"))
+
+	tc.deleteObject(tc.obj, "")
+	tc.getObject(tc.obj, "", true)
+
+	tc.checkListObjects()
+}
+
+func TestVersioningDeleteSpecificObjectVersion(t *testing.T) {
+	tc := prepareContext(t)
+	_, err := tc.layer.PutBucketVersioning(tc.ctx, &PutVersioningParams{
+		Bucket:   tc.bkt,
+		Settings: &BucketSettings{VersioningEnabled: true},
+	})
+	require.NoError(t, err)
+
+	tc.putObject([]byte("content obj1 v1"))
+	objV2Info := tc.putObject([]byte("content obj1 v2"))
+	objV3Content := []byte("content obj1 v3")
+	objV3Info := tc.putObject(objV3Content)
+
+	tc.deleteObject(tc.obj, objV2Info.Version())
+	tc.getObject(tc.obj, objV2Info.Version(), true)
+
+	_, buffer3 := tc.getObject(tc.obj, "", false)
+	require.Equal(t, objV3Content, buffer3)
+
+	tc.deleteObject(tc.obj, "")
+	tc.getObject(tc.obj, "", true)
+
+	for _, ver := range tc.listVersions().DeleteMarker {
+		if ver.IsLatest {
+			tc.deleteObject(tc.obj, ver.Object.Version())
+		}
+	}
+
+	resInfo, buffer := tc.getObject(tc.obj, "", false)
+	require.Equal(t, objV3Content, buffer)
+	require.Equal(t, objV3Info.Version(), resInfo.Version())
+}
+
+func TestNoVersioningDeleteObject(t *testing.T) {
+	tc := prepareContext(t)
+
+	tc.putObject([]byte("content obj1 v1"))
+	tc.putObject([]byte("content obj1 v2"))
+
+	tc.deleteObject(tc.obj, "")
+	tc.getObject(tc.obj, "", true)
+	tc.checkListObjects()
+}
+
+func TestGetLastVersion(t *testing.T) {
+	obj1 := getTestObjectInfo(1, getOID(1), "", "", "")
+	obj1V2 := getTestObjectInfo(1, getOID(2), "", "", "")
+	obj2 := getTestObjectInfo(2, getOID(2), obj1.Version(), "", "")
+	obj3 := getTestObjectInfo(3, getOID(3), joinVers(obj1, obj2), "", "*")
+	obj4 := getTestObjectInfo(4, getOID(4), joinVers(obj1, obj2), obj2.Version(), obj2.Version())
+	obj5 := getTestObjectInfo(5, getOID(5), obj1.Version(), obj1.Version(), obj1.Version())
+	obj6 := getTestObjectInfo(6, getOID(6), joinVers(obj1, obj2, obj3), obj3.Version(), obj3.Version())
+
+	for _, tc := range []struct {
+		versions *objectVersions
+		expected *ObjectInfo
+	}{
+		{
+			versions: &objectVersions{},
+			expected: nil,
+		},
+		{
+			versions: &objectVersions{
+				objects: []*ObjectInfo{obj2, obj1},
+				addList: []string{obj1.Version(), obj2.Version()},
+			},
+			expected: obj2,
+		},
+		{
+			versions: &objectVersions{
+				objects: []*ObjectInfo{obj2, obj1, obj3},
+				addList: []string{obj1.Version(), obj2.Version(), obj3.Version()},
+			},
+			expected: nil,
+		},
+		{
+			versions: &objectVersions{
+				objects: []*ObjectInfo{obj2, obj1, obj4},
+				addList: []string{obj1.Version(), obj2.Version(), obj4.Version()},
+				delList: []string{obj2.Version()},
+			},
+			expected: obj1,
+		},
+		{
+			versions: &objectVersions{
+				objects: []*ObjectInfo{obj1, obj5},
+				addList: []string{obj1.Version(), obj5.Version()},
+				delList: []string{obj1.Version()},
+			},
+			expected: nil,
+		},
+		{
+			versions: &objectVersions{
+				objects: []*ObjectInfo{obj5},
+			},
+			expected: nil,
+		},
+		{
+			versions: &objectVersions{
+				objects: []*ObjectInfo{obj1, obj2, obj3, obj6},
+				addList: []string{obj1.Version(), obj2.Version(), obj3.Version(), obj6.Version()},
+				delList: []string{obj3.Version()},
+			},
+			expected: obj2,
+		},
+		{
+			versions: &objectVersions{
+				objects: []*ObjectInfo{obj1, obj1V2},
+				addList: []string{obj1.Version(), obj1V2.Version()},
+			},
+			// creation epochs are equal
+			// obj1 version/oid > obj1_1 version/oid
+			expected: obj1,
+		},
+	} {
+		actualObjInfo := tc.versions.getLast()
+		require.Equal(t, tc.expected, actualObjInfo)
+	}
+}
+
+func TestAppendVersions(t *testing.T) {
+	obj1 := getTestObjectInfo(1, getOID(1), "", "", "")
+	obj2 := getTestObjectInfo(2, getOID(2), obj1.Version(), "", "")
+	obj3 := getTestObjectInfo(3, getOID(3), joinVers(obj1, obj2), "", "*")
+	obj4 := getTestObjectInfo(4, getOID(4), joinVers(obj1, obj2), obj2.Version(), obj2.Version())
+
+	for _, tc := range []struct {
+		versions         *objectVersions
+		objectToAdd      *ObjectInfo
+		expectedVersions *objectVersions
+	}{
+		{
+			versions:    &objectVersions{},
+			objectToAdd: obj1,
+			expectedVersions: &objectVersions{
+				objects: []*ObjectInfo{obj1},
+				addList: []string{obj1.Version()},
+			},
+		},
+		{
+			versions:    &objectVersions{objects: []*ObjectInfo{obj1}},
+			objectToAdd: obj2,
+			expectedVersions: &objectVersions{
+				objects: []*ObjectInfo{obj1, obj2},
+				addList: []string{obj1.Version(), obj2.Version()},
+			},
+		},
+		{
+			versions:    &objectVersions{objects: []*ObjectInfo{obj1, obj2}},
+			objectToAdd: obj3,
+			expectedVersions: &objectVersions{
+				objects: []*ObjectInfo{obj1, obj2, obj3},
+				addList: []string{obj1.Version(), obj2.Version(), obj3.Version()},
+			},
+		},
+		{
+			versions:    &objectVersions{objects: []*ObjectInfo{obj1, obj2}},
+			objectToAdd: obj4,
+			expectedVersions: &objectVersions{
+				objects: []*ObjectInfo{obj1, obj2, obj4},
+				addList: []string{obj1.Version(), obj2.Version(), obj4.Version()},
+				delList: []string{obj2.Version()},
+			},
+		},
+	} {
+		tc.versions.appendVersion(tc.objectToAdd)
+		require.Equal(t, tc.expectedVersions, tc.versions)
+	}
+}
+
+func joinVers(objs ...*ObjectInfo) string {
+	if len(objs) == 0 {
+		return ""
+	}
+
+	var versions []string
+	for _, obj := range objs {
+		versions = append(versions, obj.Version())
+	}
+
+	return strings.Join(versions, ",")
+}
+
+func getOID(id byte) *object.ID {
+	b := make([]byte, 32)
+	b[0] = id
+	oid := object.NewID()
+	oid.SetSHA256(sha256.Sum256(b))
+	return oid
+}
+
+func getTestObjectInfo(epoch uint64, oid *object.ID, addAttr, delAttr, delMarkAttr string) *ObjectInfo {
+	headers := make(map[string]string)
+	if addAttr != "" {
+		headers[versionsAddAttr] = addAttr
+	}
+	if delAttr != "" {
+		headers[versionsDelAttr] = delAttr
+	}
+	if delMarkAttr != "" {
+		headers[versionsDeleteMarkAttr] = delMarkAttr
+	}
+
+	return &ObjectInfo{
+		id:            oid,
+		CreationEpoch: epoch,
+		Headers:       headers,
+	}
+}

docs/aws_s3_compat.md

@@ -226,8 +226,8 @@ See also `GetObject` and other method parameters.
 
 |    | Method              | Comments |
 |----|---------------------|----------|
-| 🔴 | GetBucketVersioning |          |
-| 🔴 | PutBucketVersioning |          |
+| 🟢 | GetBucketVersioning |          |
+| 🟢 | PutBucketVersioning |          |
 
 ## Website