JsonMappingReader.h

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/*
 * MQTTSuite - A lightweight MQTT Integration System
 * Copyright (C) Volker Christian <me@vchrist.at>
 *               2022, 2023, 2024, 2025, 2026
 *               Tobias Pfeil
 *               2025, 2026
 *
 * 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, see <https://www.gnu.org/licenses/>.
 */
 
/*
 * MIT License
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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#ifndef MQTTBROKER_LIB_JSONMAPPINGREADER_H
#define MQTTBROKER_LIB_JSONMAPPINGREADER_H
 
#ifndef DOXYGEN_SHOULD_SKIP_THIS
 
#include <nlohmann/json_fwd.hpp> // IWYU pragma: export
#include <string>
#include <vector>
 
#endif // DOXYGEN_SHOULD_SKIP_THIS
 
namespace mqtt::lib {
 
    class JsonMappingReader {
    public:
        JsonMappingReader() = delete;
 
    public:
        static nlohmann::json readMappingFromFile(const std::string& mapFilePath);
 
        // Admin / Live Reload Support
        static void saveDraft(const std::string& mapFilePath, const nlohmann::json& content);
        static nlohmann::json readDraftOrActive(const std::string& mapFilePath);
        static nlohmann::json deployDraft(const std::string& mapFilePath);
        static void discardDraft(const std::string& mapFilePath);
        static std::string getDraftPath(const std::string& mapFilePath);
 
        struct VersionEntry {
            std::string id;
            std::string filename;
            std::string comment;
            std::string date;
        };
 
        static std::vector<VersionEntry> getHistory(const std::string& mapFilePath);
        static nlohmann::json rollbackTo(const std::string& mapFilePath, const std::string& versionId);
 
    private:
        static nlohmann::json getDefaultPatch(const nlohmann::json& inputJson);
    };
 
} // namespace mqtt::lib
 
#endif // MQTTBROKER_LIB_JSONMAPPINGREADER_H