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60 lines
2.5 KiB
60 lines
2.5 KiB
3 months ago
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/* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifndef COMPRESSION_INCLUDED
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#define COMPRESSION_INCLUDED
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/**
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@file include/compression.h
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*/
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#include <sstream>
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#include <string>
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#include <vector>
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#include "my_inttypes.h"
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#include "mysql_com.h"
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#define COMPRESSION_ALGORITHM_ZLIB "zlib"
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#define COMPRESSION_ALGORITHM_ZSTD "zstd"
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#define COMPRESSION_ALGORITHM_UNCOMPRESSED "uncompressed"
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#define COMPRESSION_ALGORITHM_NAME_LENGTH_MAX 32
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#define COMPRESSION_ALGORITHM_COUNT_MAX 3
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#define COMPRESSION_ALGORITHM_NAME_BUFFER_SIZE \
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((COMPRESSION_ALGORITHM_NAME_LENGTH_MAX * COMPRESSION_ALGORITHM_COUNT_MAX) + \
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3)
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#define PROTOCOL_COMPRESSION_DEFAULT_VALUE "zlib,zstd,uncompressed"
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constexpr int default_zstd_compression_level = 3;
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/* Helper functions to validate compression algorithm and level */
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enum_compression_algorithm get_compression_algorithm(
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std::string name = std::string());
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std::string get_compression_algorithm_name(enum_compression_algorithm);
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void parse_compression_algorithms_list(std::string name,
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std::vector<std::string> &list);
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bool is_zstd_compression_level_valid(uint level);
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bool validate_compression_attributes(std::string algorithm_names,
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std::string channel_name,
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bool ignore_errors);
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#endif /* COMPRESSION_INCLUDED */
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