[#1523] local_object_storage: Move blobovnicza tree to a separate package

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>

pkg/local_object_storage/blobstor/delete.go

@@ -0,0 +1,52 @@
+package blobstor
+
+import (
+	"errors"
+
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/blobovniczatree"
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/fstree"
+	storagelog "github.com/nspcc-dev/neofs-node/pkg/local_object_storage/internal/log"
+	apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
+)
+
+// DeleteBigPrm groups the parameters of DeleteBig operation.
+type DeleteBigPrm struct {
+	address
+}
+
+// DeleteBigRes groups the resulting values of DeleteBig operation.
+type DeleteBigRes struct{}
+
+// DeleteBig removes an object from shallow dir of BLOB storage.
+//
+// Returns any error encountered that did not allow
+// to completely remove the object.
+//
+// Returns an error of type apistatus.ObjectNotFound if there is no object to delete.
+func (b *BlobStor) DeleteBig(prm DeleteBigPrm) (DeleteBigRes, error) {
+	err := b.fsTree.Delete(prm.addr)
+	if errors.Is(err, fstree.ErrFileNotFound) {
+		var errNotFound apistatus.ObjectNotFound
+
+		err = errNotFound
+	}
+
+	if err == nil {
+		storagelog.Write(b.log, storagelog.AddressField(prm.addr), storagelog.OpField("fstree DELETE"))
+	}
+
+	return DeleteBigRes{}, err
+}
+
+// DeleteSmall removes an object from blobovnicza of BLOB storage.
+//
+// If blobovnicza ID is not set or set to nil, BlobStor tries to
+// find and remove object from any blobovnicza.
+//
+// Returns any error encountered that did not allow
+// to completely remove the object.
+//
+// Returns an error of type apistatus.ObjectNotFound if there is no object to delete.
+func (b *BlobStor) DeleteSmall(prm blobovniczatree.DeleteSmallPrm) (blobovniczatree.DeleteSmallRes, error) {
+	return b.blobovniczas.Delete(prm)
+}