[#222] Add ToMoveIt method in shard

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

pkg/local_object_storage/shard/move.go

@@ -0,0 +1,37 @@
+package shard
+
+import (
+	objectSDK "github.com/nspcc-dev/neofs-api-go/pkg/object"
+	"go.uber.org/zap"
+)
+
+// ToMoveItPrm encapsulates parameters for ToMoveIt operation.
+type ToMoveItPrm struct {
+	addr *objectSDK.Address
+}
+
+// ToMoveItRes encapsulates results of ToMoveIt operation.
+type ToMoveItRes struct{}
+
+// WithAdderss sets object address that should be marked to move into another
+// shard.
+func (p *ToMoveItPrm) WithAddress(addr *objectSDK.Address) *ToMoveItPrm {
+	if p != nil {
+		p.addr = addr
+	}
+
+	return p
+}
+
+// ToMoveIt calls metabase.ToMoveIt method to mark object as relocatable to
+// another shard.
+func (s *Shard) ToMoveIt(prm *ToMoveItPrm) (*ToMoveItRes, error) {
+	err := s.metaBase.ToMoveIt(prm.addr)
+	if err != nil {
+		s.log.Debug("could not mark object for shard relocation in metabase",
+			zap.String("error", err.Error()),
+		)
+	}
+
+	return new(ToMoveItRes), nil
+}