[#235] blobstor: Return object.ErrRangeOutOfBounds from shallow dir

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/local_object_storage/blobstor/blobovnicza.go

@@ -473,14 +473,19 @@ func (b *blobovniczas) getRangeFromLevel(prm *GetRangeSmallPrm, blzPath string,
 	// try to read from blobovnicza if it is opened
 	v, ok := b.opened.Get(blzPath)
 	if ok {
-		if res, err := b.getObjectRange(v.(*blobovnicza.Blobovnicza), prm); err == nil {
+		res, err := b.getObjectRange(v.(*blobovnicza.Blobovnicza), prm)
+		switch {
+		case err == nil,
+			errors.Is(err, object.ErrRangeOutOfBounds):
 			return res, err
-		} else if !errors.Is(err, object.ErrNotFound) {
+		default:
+			if !errors.Is(err, object.ErrNotFound) {
 				log.Debug("could not read payload range from opened blobovnicza",
 					zap.String("error", err.Error()),
 				)
 			}
 		}
+	}
 
 	// therefore the object is possibly placed in a lighter blobovnicza
 
@@ -492,14 +497,19 @@ func (b *blobovniczas) getRangeFromLevel(prm *GetRangeSmallPrm, blzPath string,
 	b.activeMtx.RUnlock()
 
 	if ok && tryActive {
-		if res, err := b.getObjectRange(active.blz, prm); err == nil {
+		res, err := b.getObjectRange(active.blz, prm)
+		switch {
+		case err == nil,
+			errors.Is(err, object.ErrRangeOutOfBounds):
 			return res, err
-		} else if !errors.Is(err, object.ErrNotFound) {
+		default:
+			if !errors.Is(err, object.ErrNotFound) {
 				log.Debug("could not read payload range from active blobovnicza",
 					zap.String("error", err.Error()),
 				)
 			}
 		}
+	}
 
 	// then object is possibly placed in closed blobovnicza
 

pkg/local_object_storage/blobstor/get_range_big.go

@@ -20,6 +20,8 @@ type GetRangeBigRes struct {
 //
 // Returns any error encountered that
 // did not allow to completely read the object payload range.
+//
+// Returns ErrRangeOutOfBounds if requested object range is out of bounds.
 func (b *BlobStor) GetRangeBig(prm *GetRangeBigPrm) (*GetRangeBigRes, error) {
 	// get compressed object data
 	data, err := b.fsTree.get(prm.addr)
@@ -42,8 +44,7 @@ func (b *BlobStor) GetRangeBig(prm *GetRangeBigPrm) (*GetRangeBigRes, error) {
 	ln, off := prm.rng.GetLength(), prm.rng.GetOffset()
 
 	if pLen := uint64(len(payload)); pLen < ln+off {
-		return nil, errors.Errorf("range is out-of-bounds (payload %d, off %d, ln %d)",
-			pLen, off, ln)
+		return nil, object.ErrRangeOutOfBounds
 	}
 
 	return &GetRangeBigRes{

pkg/local_object_storage/blobstor/get_range_small.go

@@ -19,6 +19,8 @@ type GetRangeSmallRes struct {
 //
 // Returns any error encountered that
 // did not allow to completely read the object payload range.
+//
+// Returns ErrRangeOutOfBounds if requested object range is out of bounds.
 func (b *BlobStor) GetRangeSmall(prm *GetRangeSmallPrm) (*GetRangeSmallRes, error) {
 	return b.blobovniczas.getRange(prm)
 }

pkg/local_object_storage/shard/range.go

@@ -52,6 +52,8 @@ func (r *RngRes) Object() *object.Object {
 //
 // Returns any error encountered that
 // did not allow to completely read the object part.
+//
+// Returns ErrRangeOutOfBounds if requested object range is out of bounds.
 func (s *Shard) GetRange(prm *RngPrm) (*RngRes, error) {
 	var big, small storFetcher