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/* Copyright (c) 2019, 2025, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is designed to work with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have either included with
the program or referenced in the documentation.
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, version 2.0, 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 St, Fifth Floor, Boston, MA 02110-1301 USA */
#ifndef COMPRESSION_INCLUDED
#define COMPRESSION_INCLUDED
/**
@file include/compression.h
*/
#include <sstream>
#include <string>
#include <vector>
#include "my_inttypes.h"
#include "mysql_com.h"
#define COMPRESSION_ALGORITHM_ZLIB "zlib"
#define COMPRESSION_ALGORITHM_ZSTD "zstd"
#define COMPRESSION_ALGORITHM_UNCOMPRESSED "uncompressed"
#define COMPRESSION_ALGORITHM_NAME_LENGTH_MAX 32
#define COMPRESSION_ALGORITHM_COUNT_MAX 3
#define COMPRESSION_ALGORITHM_NAME_BUFFER_SIZE \
((COMPRESSION_ALGORITHM_NAME_LENGTH_MAX * COMPRESSION_ALGORITHM_COUNT_MAX) + \
3)
#define PROTOCOL_COMPRESSION_DEFAULT_VALUE "zlib,zstd,uncompressed"
constexpr int default_zstd_compression_level = 3;
/* Helper functions to validate compression algorithm and level */
enum_compression_algorithm get_compression_algorithm(
std::string name = std::string());
std::string get_compression_algorithm_name(enum_compression_algorithm);
void parse_compression_algorithms_list(std::string name,
std::vector<std::string> &list);
bool is_zstd_compression_level_valid(uint level);
bool validate_compression_attributes(std::string algorithm_names,
std::string channel_name,
bool ignore_errors);
#endif /* COMPRESSION_INCLUDED */
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