[#1461] meta: Return error on lock object removal

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

pkg/local_object_storage/engine/inhume.go

@@ -75,6 +75,8 @@ func (e *StorageEngine) inhume(prm InhumePrm) (InhumeRes, error) {
 		}
 
 		switch e.inhumeAddr(prm.addrs[i], shPrm, true) {
+		case 2:
+			return InhumeRes{}, meta.ErrLockObjectRemoval
 		case 1:
 			return InhumeRes{}, apistatus.ObjectLocked{}
 		case 0:
@@ -93,7 +95,8 @@ func (e *StorageEngine) inhume(prm InhumePrm) (InhumeRes, error) {
 // Returns:
 //   0 - fail
 //   1 - object locked
-//   2 - ok
+//   2 - lock object removal
+//   3 - ok
 func (e *StorageEngine) inhumeAddr(addr oid.Address, prm shard.InhumePrm, checkExists bool) (status uint8) {
 	root := false
 	var errLocked apistatus.ObjectLocked
@@ -114,7 +117,7 @@ func (e *StorageEngine) inhumeAddr(addr oid.Address, prm shard.InhumePrm, checkE
 			if err != nil {
 				if shard.IsErrRemoved(err) {
 					// inhumed once - no need to be inhumed again
-					status = 2
+					status = 3
 					return true
 				}
 
@@ -134,15 +137,19 @@ func (e *StorageEngine) inhumeAddr(addr oid.Address, prm shard.InhumePrm, checkE
 		if err != nil {
 			e.reportShardError(sh, "could not inhume object in shard", err)
 
-			if errors.As(err, &errLocked) {
+			switch {
+			case errors.As(err, &errLocked):
 				status = 1
 				return true
+			case errors.Is(err, meta.ErrLockObjectRemoval):
+				status = 2
+				return true
 			}
 
 			return false
 		}
 
-		status = 2
+		status = 3
 
 		return true
 	})

pkg/local_object_storage/engine/lock_test.go

@@ -9,6 +9,7 @@ import (
 
 	objectV2 "github.com/nspcc-dev/neofs-api-go/v2/object"
 	objectcore "github.com/nspcc-dev/neofs-node/pkg/core/object"
+	meta "github.com/nspcc-dev/neofs-node/pkg/local_object_storage/metabase"
 	"github.com/nspcc-dev/neofs-node/pkg/local_object_storage/shard"
 	"github.com/nspcc-dev/neofs-node/pkg/util"
 	apistatus "github.com/nspcc-dev/neofs-sdk-go/client/status"
@@ -133,7 +134,7 @@ func TestLockUserScenario(t *testing.T) {
 	inhumePrm.WithTarget(tombForLockAddr, lockerAddr)
 
 	_, err = e.Inhume(inhumePrm)
-	require.NoError(t, err, new(apistatus.ObjectLocked))
+	require.ErrorIs(t, err, meta.ErrLockObjectRemoval)
 
 	// 5.
 	for i := range chEvents {

pkg/local_object_storage/metabase/inhume.go

@@ -93,6 +93,10 @@ func Inhume(db *DB, target, tomb oid.Address) error {
 
 var errBreakBucketForEach = errors.New("bucket ForEach break")
 
+// ErrLockObjectRemoval is returned when inhume operation is being
+// performed on lock object, and it is not a forced object removal.
+var ErrLockObjectRemoval = errors.New("lock object removal")
+
 // Inhume marks objects as removed but not removes it from metabase.
 //
 // Allows inhuming non-locked objects only. Returns apistatus.ObjectLocked
@@ -149,7 +153,7 @@ func (db *DB) Inhume(prm InhumePrm) (res InhumeRes, err error) {
 			// `WithForceGCMark` option
 			if !prm.forceRemoval {
 				if isLockObject(tx, cnr, id) {
-					return fmt.Errorf("lock object removal, CID: %s, OID: %s", cnr, id)
+					return ErrLockObjectRemoval
 				}
 
 				lockWasChecked = true