f3eade2f62
Drop the AGPL license in favor of a source-available license. See the blog post [1] for details. [1] https://www.scylladb.com/2024/12/18/why-were-moving-to-a-source-available-license/
63 lines
1.6 KiB
C++
63 lines
1.6 KiB
C++
/*
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* Copyright (C) 2021-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
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*/
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#pragma once
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#include <variant>
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#include "db_clock.hh"
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#include "utils/UUID.hh"
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namespace cdc {
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struct generation_id_v1 {
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db_clock::time_point ts;
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bool operator==(const generation_id_v1&) const = default;
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};
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struct generation_id_v2 {
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db_clock::time_point ts;
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utils::UUID id;
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bool operator==(const generation_id_v2&) const = default;
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};
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using generation_id = std::variant<generation_id_v1, generation_id_v2>;
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db_clock::time_point get_ts(const generation_id&);
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} // namespace cdc
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template <>
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struct fmt::formatter<cdc::generation_id_v1> {
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constexpr auto parse(format_parse_context& ctx) { return ctx.begin(); }
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template <typename FormatContext>
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auto format(const cdc::generation_id_v1& gen_id, FormatContext& ctx) const {
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return fmt::format_to(ctx.out(), "{}", gen_id.ts);
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}
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};
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template <>
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struct fmt::formatter<cdc::generation_id_v2> {
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constexpr auto parse(format_parse_context& ctx) { return ctx.begin(); }
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template <typename FormatContext>
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auto format(const cdc::generation_id_v2& gen_id, FormatContext& ctx) const {
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return fmt::format_to(ctx.out(), "({}, {})", gen_id.ts, gen_id.id);
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}
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};
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template <>
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struct fmt::formatter<cdc::generation_id> {
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constexpr auto parse(format_parse_context& ctx) { return ctx.begin(); }
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template <typename FormatContext>
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auto format(const cdc::generation_id& gen_id, FormatContext& ctx) const {
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return std::visit([&ctx] (auto& id) {
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return fmt::format_to(ctx.out(), "{}", id);
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}, gen_id);
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}
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};
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