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/*
Copyright (c) 2014, SkySQL Ab
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; version 2 of the License.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA */
#pragma once
/* C++ system header files */
#include <string>
#include <unordered_map>
/* RocksDB header files */
#include "rocksdb/table.h"
#include "rocksdb/utilities/options_util.h"
/* MyRocks header files */
#include "./rdb_comparator.h"
namespace myrocks {
/*
Per-column family options configs.
Per-column family option can be set
- Globally (the same value applies to all column families)
- Per column family: there is a {cf_name -> value} map,
and also there is a default value which applies to column
families not found in the map.
*/
class Rdb_cf_options {
public:
using Name_to_config_t = std::unordered_map<std::string, std::string>;
Rdb_cf_options(const Rdb_cf_options &) = delete;
Rdb_cf_options &operator=(const Rdb_cf_options &) = delete;
Rdb_cf_options() = default;
void get(const std::string &cf_name,
rocksdb::ColumnFamilyOptions *const opts);
void update(const std::string &cf_name, const std::string &cf_options);
bool init(const rocksdb::BlockBasedTableOptions &table_options,
std::shared_ptr<rocksdb::TablePropertiesCollectorFactory>
prop_coll_factory,
const char *const default_cf_options,
const char *const override_cf_options);
const rocksdb::ColumnFamilyOptions &get_defaults() const {
return m_default_cf_opts;
}
static const rocksdb::Comparator *get_cf_comparator(
const std::string &cf_name);
std::shared_ptr<rocksdb::MergeOperator> get_cf_merge_operator(
const std::string &cf_name);
void get_cf_options(const std::string &cf_name,
rocksdb::ColumnFamilyOptions *const opts)
MY_ATTRIBUTE((__nonnull__));
static bool parse_cf_options(const std::string &cf_options,
Name_to_config_t *option_map);
private:
bool set_default(const std::string &default_config);
bool set_override(const std::string &overide_config);
/* Helper string manipulation functions */
static void skip_spaces(const std::string &input, size_t *const pos);
static bool find_column_family(const std::string &input, size_t *const pos,
std::string *const key);
static bool find_options(const std::string &input, size_t *const pos,
std::string *const options);
static bool find_cf_options_pair(const std::string &input, size_t *const pos,
std::string *const cf,
std::string *const opt_str);
private:
static Rdb_pk_comparator s_pk_comparator;
static Rdb_rev_comparator s_rev_pk_comparator;
/* CF name -> value map */
Name_to_config_t m_name_map;
/* The default value (if there is only one value, it is stored here) */
std::string m_default_config;
rocksdb::ColumnFamilyOptions m_default_cf_opts;
};
} // namespace myrocks
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