63ddb783db
Summary: This is an initial diff for providing the ability to delete files which are completely within a given range of keys. Test Plan: DBCompactionTest.DeleteRange Reviewers: IslamAbdelRahman, sdong Reviewed By: sdong Subscribers: yoshinorim, dhruba, leveldb Differential Revision: https://reviews.facebook.net/D52293
108 lines
4.3 KiB
C++
108 lines
4.3 KiB
C++
// Copyright (c) 2014, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under the BSD-style license found in the
|
|
// LICENSE file in the root directory of this source tree. An additional grant
|
|
// of patent rights can be found in the PATENTS file in the same directory.
|
|
|
|
#pragma once
|
|
|
|
#include <unordered_map>
|
|
#include <string>
|
|
#include "rocksdb/db.h"
|
|
#include "rocksdb/options.h"
|
|
#include "rocksdb/table.h"
|
|
|
|
namespace rocksdb {
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
// Take a map of option name and option value, apply them into the
|
|
// base_options, and return the new options as a result.
|
|
//
|
|
// If input_strings_escaped is set to true, then each escaped characters
|
|
// prefixed by '\' in the the values of the opts_map will be further
|
|
// converted back to the raw string before assigning to the associated
|
|
// options.
|
|
Status GetColumnFamilyOptionsFromMap(
|
|
const ColumnFamilyOptions& base_options,
|
|
const std::unordered_map<std::string, std::string>& opts_map,
|
|
ColumnFamilyOptions* new_options, bool input_strings_escaped = false);
|
|
|
|
// Take a map of option name and option value, apply them into the
|
|
// base_options, and return the new options as a result.
|
|
//
|
|
// If input_strings_escaped is set to true, then each escaped characters
|
|
// prefixed by '\' in the the values of the opts_map will be further
|
|
// converted back to the raw string before assigning to the associated
|
|
// options.
|
|
Status GetDBOptionsFromMap(
|
|
const DBOptions& base_options,
|
|
const std::unordered_map<std::string, std::string>& opts_map,
|
|
DBOptions* new_options, bool input_strings_escaped = false);
|
|
|
|
Status GetBlockBasedTableOptionsFromMap(
|
|
const BlockBasedTableOptions& table_options,
|
|
const std::unordered_map<std::string, std::string>& opts_map,
|
|
BlockBasedTableOptions* new_table_options,
|
|
bool input_strings_escaped = false);
|
|
|
|
Status GetPlainTableOptionsFromMap(
|
|
const PlainTableOptions& table_options,
|
|
const std::unordered_map<std::string, std::string>& opts_map,
|
|
PlainTableOptions* new_table_options,
|
|
bool input_strings_escaped = false);
|
|
|
|
// Take a string representation of option names and values, apply them into the
|
|
// base_options, and return the new options as a result. The string has the
|
|
// following format:
|
|
// "write_buffer_size=1024;max_write_buffer_number=2"
|
|
// Nested options config is also possible. For example, you can define
|
|
// BlockBasedTableOptions as part of the string for block-based table factory:
|
|
// "write_buffer_size=1024;block_based_table_factory={block_size=4k};"
|
|
// "max_write_buffer_num=2"
|
|
Status GetColumnFamilyOptionsFromString(
|
|
const ColumnFamilyOptions& base_options,
|
|
const std::string& opts_str,
|
|
ColumnFamilyOptions* new_options);
|
|
|
|
Status GetDBOptionsFromString(
|
|
const DBOptions& base_options,
|
|
const std::string& opts_str,
|
|
DBOptions* new_options);
|
|
|
|
Status GetStringFromDBOptions(std::string* opts_str,
|
|
const DBOptions& db_options,
|
|
const std::string& delimiter = "; ");
|
|
|
|
Status GetStringFromColumnFamilyOptions(std::string* opts_str,
|
|
const ColumnFamilyOptions& db_options,
|
|
const std::string& delimiter = "; ");
|
|
|
|
Status GetBlockBasedTableOptionsFromString(
|
|
const BlockBasedTableOptions& table_options,
|
|
const std::string& opts_str,
|
|
BlockBasedTableOptions* new_table_options);
|
|
|
|
Status GetPlainTableOptionsFromString(
|
|
const PlainTableOptions& table_options,
|
|
const std::string& opts_str,
|
|
PlainTableOptions* new_table_options);
|
|
|
|
Status GetMemTableRepFactoryFromString(
|
|
const std::string& opts_str,
|
|
std::unique_ptr<MemTableRepFactory>* new_mem_factory);
|
|
|
|
Status GetOptionsFromString(const Options& base_options,
|
|
const std::string& opts_str, Options* new_options);
|
|
|
|
// Request stopping background work, if wait is true wait until it's done
|
|
void CancelAllBackgroundWork(DB* db, bool wait = false);
|
|
|
|
// Delete files which are entirely in the given range
|
|
// Could leave some keys in the range which are in files which are not
|
|
// entirely in the range.
|
|
// Snapshots before the delete might not see the data in the given range.
|
|
Status DeleteFilesInRange(DB* db, ColumnFamilyHandle* column_family,
|
|
const Slice* begin, const Slice* end);
|
|
#endif // ROCKSDB_LITE
|
|
|
|
} // namespace rocksdb
|