syntax = "proto3";

package neo.fs.v2.tombstone;

option go_package = "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/tombstone/grpc;tombstone";
option csharp_namespace = "Neo.FileStorage.API.Tombstone";

import "refs/types.proto";

// Tombstone keeps record of deleted objects for a few epochs until they are
// purged from the NeoFS network.
message Tombstone {
  // Last NeoFS epoch number of the tombstone lifetime. It's set by the
  // tombstone creator depending on the current NeoFS network settings. A
  // tombstone object must have the same expiration epoch value in
  // `__SYSTEM__EXPIRATION_EPOCH` (`__NEOFS__EXPIRATION_EPOCH` is deprecated)
  // attribute. Otherwise, the tombstone will be rejected by a storage node.
  uint64 expiration_epoch = 1 [ json_name = "expirationEpoch" ];

  // 16 byte UUID used to identify the split object hierarchy parts. Must be
  // unique inside a container. All objects participating in the split must
  // have the same `split_id` value.
  bytes split_id = 2 [ json_name = "splitID" ];

  // List of objects to be deleted.
  repeated neo.fs.v2.refs.ObjectID members = 3 [ json_name = "members" ];
}