[#2068] blobstor: Allow to provide storage ID in `Exists`

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

pkg/local_object_storage/blobstor/blobovniczatree/exists.go

@@ -10,6 +10,17 @@ import (
 
 // Exists implements common.Storage.
 func (b *Blobovniczas) Exists(prm common.ExistsPrm) (common.ExistsRes, error) {
+	if prm.StorageID != nil {
+		id := blobovnicza.NewIDFromBytes(prm.StorageID)
+		blz, err := b.openBlobovnicza(id.String())
+		if err != nil {
+			return common.ExistsRes{}, err
+		}
+
+		exists, err := blz.Exists(prm.Address)
+		return common.ExistsRes{Exists: exists}, err
+	}
+
 	activeCache := make(map[string]struct{})
 
 	var gPrm blobovnicza.GetPrm

pkg/local_object_storage/blobstor/blobovniczatree/exists_test.go

@@ -0,0 +1,65 @@
+package blobovniczatree
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/nspcc-dev/neo-go/pkg/util/slice"
+	"github.com/nspcc-dev/neofs-node/pkg/core/object"
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/common"
+	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/blobstor/internal/blobstortest"
+	"github.com/nspcc-dev/neofs-node/pkg/util/logger"
+	"github.com/stretchr/testify/require"
+	"go.uber.org/zap/zaptest"
+)
+
+func TestExistsInvalidStorageID(t *testing.T) {
+	dir := t.TempDir()
+	b := NewBlobovniczaTree(
+		WithLogger(&logger.Logger{Logger: zaptest.NewLogger(t)}),
+		WithObjectSizeLimit(1024),
+		WithBlobovniczaShallowWidth(2),
+		WithBlobovniczaShallowDepth(2),
+		WithRootPath(dir),
+		WithBlobovniczaSize(1<<20))
+	require.NoError(t, b.Open(false))
+	require.NoError(t, b.Init())
+	t.Cleanup(func() { _ = b.Close() })
+
+	obj := blobstortest.NewObject(1024)
+	addr := object.AddressOf(obj)
+	d, err := obj.Marshal()
+	require.NoError(t, err)
+
+	putRes, err := b.Put(common.PutPrm{Address: addr, RawData: d, DontCompress: true})
+	require.NoError(t, err)
+
+	t.Run("valid but wrong storage id", func(t *testing.T) {
+		// "0/X/Y" <-> "1/X/Y"
+		storageID := slice.Copy(putRes.StorageID)
+		if storageID[0] == '0' {
+			storageID[0]++
+		} else {
+			storageID[0]--
+		}
+
+		res, err := b.Exists(common.ExistsPrm{Address: addr, StorageID: storageID})
+		require.NoError(t, err)
+		require.False(t, res.Exists)
+	})
+
+	t.Run("invalid storage id", func(t *testing.T) {
+		// "0/X/Y" <-> "1/X/Y"
+		storageID := slice.Copy(putRes.StorageID)
+		storageID[0] = '9'
+		badDir := filepath.Join(dir, "9")
+		require.NoError(t, os.MkdirAll(badDir, os.ModePerm))
+		require.NoError(t, os.Chmod(badDir, 0))
+		t.Cleanup(func() { _ = os.Chmod(filepath.Join(dir, "9"), os.ModePerm) })
+
+		res, err := b.Exists(common.ExistsPrm{Address: addr, StorageID: storageID})
+		require.Error(t, err)
+		require.False(t, res.Exists)
+	})
+}

pkg/local_object_storage/blobstor/common/exists.go

@@ -4,7 +4,8 @@ import oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
 
 // ExistsPrm groups the parameters of Exists operation.
 type ExistsPrm struct {
-	Address oid.Address
+	Address   oid.Address
+	StorageID []byte
 }
 
 // ExistsRes groups the resulting values of Exists operation.

pkg/local_object_storage/blobstor/exists.go

@@ -13,6 +13,13 @@ func (b *BlobStor) Exists(prm common.ExistsPrm) (common.ExistsRes, error) {
 	b.modeMtx.RLock()
 	defer b.modeMtx.RUnlock()
 
+	if prm.StorageID != nil {
+		if len(prm.StorageID) == 0 {
+			return b.storage[len(b.storage)-1].Storage.Exists(prm)
+		}
+		return b.storage[0].Storage.Exists(prm)
+	}
+
 	// If there was an error during existence check below,
 	// it will be returned unless object was found in blobovnicza.
 	// Otherwise, it is logged and the latest error is returned.

pkg/local_object_storage/blobstor/internal/blobstortest/exists.go

@@ -25,7 +25,20 @@ func TestExists(t *testing.T, cons Constructor, min, max uint64) {
 
 	var prm common.ExistsPrm
 	prm.Address = objects[0].addr
-	res, err := s.Exists(prm)
-	require.NoError(t, err)
-	require.True(t, res.Exists)
+
+	t.Run("without storage ID", func(t *testing.T) {
+		prm.StorageID = nil
+
+		res, err := s.Exists(prm)
+		require.NoError(t, err)
+		require.True(t, res.Exists)
+	})
+
+	t.Run("with storage ID", func(t *testing.T) {
+		prm.StorageID = objects[0].storageID
+
+		res, err := s.Exists(prm)
+		require.NoError(t, err)
+		require.True(t, res.Exists)
+	})
 }