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authorSmallJoker <SmallJoker@users.noreply.github.com>2019-08-24 19:07:38 +0200
committerGitHub <noreply@github.com>2019-08-24 19:07:38 +0200
commit0b4f424f414380b7a46270e1389e8aa0524d8fba (patch)
tree5731cbe72bb3178d697b3cda43b838f26ba34f7d /builtin/game/knockback.lua
parent008b80fe1ca9d46610b8971e2ac92fb56da8e69f (diff)
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Inventory: Send dirty lists where appropriate (#8742)
This change reduces the amount of sent data towards clients. Inventory lists that are already known to the player are skipped, saving quite some data over time. Raises protocol version to 38 to ensure correct backwards-compatible code.
Diffstat (limited to 'builtin/game/knockback.lua')
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generated by cgit v1.2.3 (git 2.39.1) at 2025-02-15 05:03:01 +0000
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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser 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 DATABASE_POSTGRESQL_HEADER
#define DATABASE_POSTGRESQL_HEADER

#include <string>
#include <libpq-fe.h>
#include "database.h"
#include "util/basic_macros.h"

class Settings;

class Database_PostgreSQL: public Database
{
public:
	Database_PostgreSQL(const std::string &connect_string);
	~Database_PostgreSQL();

	void beginSave();
	void endSave();

	bool initialized() const;


protected:
	// Conversion helpers
	inline int pg_to_int(PGresult *res, int row, int col)
	{
		return atoi(PQgetvalue(res, row, col));
	}

	inline u32 pg_to_uint(PGresult *res, int row, int col)
	{
		return (u32) atoi(PQgetvalue(res, row, col));
	}

	inline float pg_to_float(PGresult *res, int row, int col)
	{
		return (float) atof(PQgetvalue(res, row, col));
	}

	inline v3s16 pg_to_v3s16(PGresult *res, int row, int col)
	{
		return v3s16(
			pg_to_int(res, row, col),
			pg_to_int(res, row, col + 1),
			pg_to_int(res, row, col + 2)
		);
	}

	inline PGresult *execPrepared(const char *stmtName, const int paramsNumber,
		const void **params,
		const int *paramsLengths = NULL, const int *paramsFormats = NULL,
		bool clear = true, bool nobinary = true)
	{
		return checkResults(PQexecPrepared(m_conn, stmtName, paramsNumber,
			(const char* const*) params, paramsLengths, paramsFormats,
			nobinary ? 1 : 0), clear);
	}

	inline PGresult *execPrepared(const char *stmtName, const int paramsNumber,
		const char **params, bool clear = true, bool nobinary = true)
	{
		return execPrepared(stmtName, paramsNumber,
			(const void **)params, NULL, NULL, clear, nobinary);
	}

	void createTableIfNotExists(const std::string &table_name, const std::string &definition);
	void verifyDatabase();

	// Database initialization
	void connectToDatabase();
	virtual void createDatabase() = 0;
	virtual void initStatements() = 0;
	inline void prepareStatement(const std::string &name, const std::string &sql)
	{
		checkResults(PQprepare(m_conn, name.c_str(), sql.c_str(), 0, NULL));
	}

	const int getPGVersion() const { return m_pgversion; }
private:
	// Database connectivity checks
	void ping();

	// Database usage
	PGresult *checkResults(PGresult *res, bool clear = true);

	// Attributes
	std::string m_connect_string;
	PGconn *m_conn;
	int m_pgversion;
};

class MapDatabasePostgreSQL : private Database_PostgreSQL, public MapDatabase
{
public:
	MapDatabasePostgreSQL(const std::string &connect_string);
	virtual ~MapDatabasePostgreSQL() {}

	bool saveBlock(const v3s16 &pos, const std::string &data);
	void loadBlock(const v3s16 &pos, std::string *block);
	bool deleteBlock(const v3s16 &pos);
	void listAllLoadableBlocks(std::vector<v3s16> &dst);

	void beginSave() { Database_PostgreSQL::beginSave(); }
	void endSave() { Database_PostgreSQL::endSave(); }

protected:
	virtual void createDatabase();
	virtual void initStatements();
};

class PlayerDatabasePostgreSQL : private Database_PostgreSQL, public PlayerDatabase
{
public:
	PlayerDatabasePostgreSQL(const std::string &connect_string);
	virtual ~PlayerDatabasePostgreSQL() {}

	void savePlayer(RemotePlayer *player);
	bool loadPlayer(RemotePlayer *player, PlayerSAO *sao);
	bool removePlayer(const std::string &name);
	void listPlayers(std::vector<std::string> &res);

protected:
	virtual void createDatabase();
	virtual void initStatements();

private:
	bool playerDataExists(const std::string &playername);
};

#endif
generated by cgit v1.2.3 (git 2.39.1) at 2025-02-15 05:03:01 +0000