upload_position_tracker.hpp

/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * Copyright (C) 2025 Marco Craveiro <marco.craveiro@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 3 of the License, or (at your option) any later
 * version.
 *
 * This program 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
 * this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */
#ifndef ORES_TELEMETRY_EXPORTING_UPLOAD_POSITION_TRACKER_HPP
#define ORES_TELEMETRY_EXPORTING_UPLOAD_POSITION_TRACKER_HPP
 
#include <cstdint>
#include <filesystem>
#include <mutex>
 
namespace ores::telemetry::exporting {
 
class upload_position_tracker final {
public:
    explicit upload_position_tracker(std::filesystem::path log_file_path);
 
    std::uint64_t get_position() const;
 
    void set_position(std::uint64_t position);
 
    const std::filesystem::path& marker_file_path() const;
 
    void reset();
 
private:
    std::uint64_t load_position_from_file() const;
 
    void save_position_to_file(std::uint64_t position) const;
 
    std::filesystem::path log_file_path_;
    std::filesystem::path marker_file_path_;
    mutable std::mutex mutex_;
    std::uint64_t position_;
};
 
}
 
#endif