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scylladb/cdc/generation_id.hh

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/*
* Copyright (C) 2021-present ScyllaDB
*/
/*
* This file is part of Scylla.
*
* Scylla is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Scylla is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <variant>
#include "db_clock.hh"
#include "utils/UUID.hh"
namespace cdc {
struct generation_id_v1 {
db_clock::time_point ts;
};
struct generation_id_v2 {
db_clock::time_point ts;
utils::UUID id;
};
using generation_id = std::variant<generation_id_v1, generation_id_v2>;
std::ostream& operator<<(std::ostream&, const generation_id&);
bool operator==(const generation_id&, const generation_id&);
db_clock::time_point get_ts(const generation_id&);
} // namespace cdc