database-dummy.h

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// Luanti
// SPDX-License-Identifier: LGPL-2.1-or-later
// Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>
 
#pragma once
 
#include <map>
#include <set>
#include <string>
#include <mutex>
#include "database.h"
#include "irrlichttypes.h"
 
class Database_Dummy : public MapDatabase, public PlayerDatabase, public ModStorageDatabase
{
public:
        bool saveBlock(const v3s16 &pos, std::string_view data);
        void loadBlock(const v3s16 &pos, std::string *block);
        bool deleteBlock(const v3s16 &pos);
        void listAllLoadableBlocks(std::vector<v3s16> &dst);
 
        void savePlayer(RemotePlayer *player);
        bool loadPlayer(RemotePlayer *player, PlayerSAO *sao);
        bool removePlayer(const std::string &name);
        void listPlayers(std::vector<std::string> &res);
 
        void getModEntries(const std::string &modname, StringMap *storage);
        void getModKeys(const std::string &modname, std::vector<std::string> *storage);
        bool getModEntry(const std::string &modname,
                        const std::string &key, std::string *value);
        bool hasModEntry(const std::string &modname, const std::string &key);
        bool setModEntry(const std::string &modname,
                        const std::string &key, std::string_view value);
        bool removeModEntry(const std::string &modname, const std::string &key);
        bool removeModEntries(const std::string &modname);
        void listMods(std::vector<std::string> *res);
 
        void beginSave() {}
        void endSave() {}
 
private:
        // We could have used 3 mutexes, one per container, but as it's only for testing purposes, one mutex is enough.
        std::mutex m_mutex;
        std::map<s64, std::string> m_database;
        std::set<std::string> m_player_database;
        std::unordered_map<std::string, StringMap> m_mod_storage_database;
};
 
/*
 * Auth: kept here for completeness, declared alongside the other in-memory
 * backends.
 */
class AuthDatabaseDummy : public AuthDatabase
{
public:
        AuthDatabaseDummy() = default;
        virtual ~AuthDatabaseDummy() = default;
 
        virtual bool getAuth(const std::string &name, AuthEntry &res);
        virtual bool saveAuth(const AuthEntry &authEntry);
        virtual bool createAuth(AuthEntry &authEntry);
        virtual bool deleteAuth(const std::string &name);
        virtual void listNames(std::vector<std::string> &res);
        virtual void reload();
 
private:
        std::mutex m_mutex;
        std::unordered_map<std::string, AuthEntry> m_auth_entries;
        u64 m_next_id = 1;
};