[#377] metabase: Support batch Inhume operation

Replace single target address in `InhumePrm` with the list of addresses.
Rename `WithAddress` method to `WithAddresses` and change parameter to
variadic.

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

pkg/local_object_storage/metabase/inhume.go

@@ -7,16 +7,18 @@ import (
 
 // InhumePrm encapsulates parameters for Inhume operation.
 type InhumePrm struct {
-	target, tomb *objectSDK.Address
+	tomb *objectSDK.Address
+
+	target []*objectSDK.Address
 }
 
 // InhumeRes encapsulates results of Inhume operation.
 type InhumeRes struct{}
 
-// WithAddress sets object address that should be inhumed.
-func (p *InhumePrm) WithAddress(addr *objectSDK.Address) *InhumePrm {
+// WithAddresses sets list of object addresses that should be inhumed.
+func (p *InhumePrm) WithAddresses(addrs ...*objectSDK.Address) *InhumePrm {
 	if p != nil {
-		p.target = addr
+		p.target = addrs
 	}
 
 	return p
@@ -50,7 +52,7 @@ func (p *InhumePrm) WithGCMark() *InhumePrm {
 // tomb should not be nil.
 func Inhume(db *DB, target, tomb *objectSDK.Address) error {
 	_, err := db.Inhume(new(InhumePrm).
-		WithAddress(target).
+		WithAddresses(target).
 		WithTombstoneAddress(tomb),
 	)
 
@@ -67,7 +69,8 @@ func (db *DB) Inhume(prm *InhumePrm) (res *InhumeRes, err error) {
 			return err
 		}
 
-		obj, err := db.get(tx, prm.target, false, true)
+		for i := range prm.target {
+			obj, err := db.get(tx, prm.target[i], false, true)
 
 			// if object is stored and it is regular object then update bucket
 			// with container size estimations
@@ -91,7 +94,13 @@ func (db *DB) Inhume(prm *InhumePrm) (res *InhumeRes, err error) {
 			}
 
 			// consider checking if target is already in graveyard?
-		return graveyard.Put(addressKey(prm.target), val)
+			err = graveyard.Put(addressKey(prm.target[i]), val)
+			if err != nil {
+				return err
+			}
+		}
+
+		return nil
 	})
 
 	return