remote_event_adapter.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_COMMS_SERVICE_REMOTE_EVENT_ADAPTER_HPP
#define ORES_COMMS_SERVICE_REMOTE_EVENT_ADAPTER_HPP
 
#include <set>
#include <mutex>
#include <string>
#include <memory>
#include <functional>
#include <string_view>
#include <boost/asio/awaitable.hpp>
#include "ores.utility/log/make_logger.hpp"
#include "ores.comms/net/client.hpp"
 
namespace ores::comms::service {
 
class remote_event_adapter final {
private:
    inline static std::string_view logger_name =
        "ores.comms.service.remote_event_adapter";
 
    static auto& lg() {
        using namespace ores::utility::log;
        static auto instance = make_logger(logger_name);
        return instance;
    }
 
public:
    explicit remote_event_adapter(std::shared_ptr<net::client> client);
 
    ~remote_event_adapter();
 
    boost::asio::awaitable<bool> subscribe(const std::string& event_type);
 
    boost::asio::awaitable<bool> unsubscribe(const std::string& event_type);
 
    bool is_subscribed(const std::string& event_type) const;
 
    std::set<std::string> get_subscriptions() const;
 
    boost::asio::awaitable<std::size_t> resubscribe_all();
 
    void set_notification_callback(net::notification_callback_t callback);
 
private:
    void on_notification(const std::string& event_type,
        std::chrono::system_clock::time_point timestamp);
 
    std::shared_ptr<net::client> client_;
    mutable std::mutex mutex_;
    std::set<std::string> subscriptions_;
    net::notification_callback_t user_callback_;
};
 
}
 
#endif