fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
187 lines
7.5 KiB
187 lines
7.5 KiB
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
// (found in the LICENSE.Apache file in the root directory).
|
|
//
|
|
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file. See the AUTHORS file for names of contributors.
|
|
//
|
|
// File names used by DB code
|
|
|
|
#pragma once
|
|
#include <stdint.h>
|
|
#include <unordered_map>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "options/db_options.h"
|
|
#include "port/port.h"
|
|
#include "rocksdb/file_system.h"
|
|
#include "rocksdb/options.h"
|
|
#include "rocksdb/slice.h"
|
|
#include "rocksdb/status.h"
|
|
#include "rocksdb/transaction_log.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
class Env;
|
|
class Directory;
|
|
class SystemClock;
|
|
class WritableFileWriter;
|
|
|
|
#ifdef OS_WIN
|
|
constexpr char kFilePathSeparator = '\\';
|
|
#else
|
|
constexpr char kFilePathSeparator = '/';
|
|
#endif
|
|
|
|
// Return the name of the log file with the specified number
|
|
// in the db named by "dbname". The result will be prefixed with
|
|
// "dbname".
|
|
extern std::string LogFileName(const std::string& dbname, uint64_t number);
|
|
|
|
extern std::string LogFileName(uint64_t number);
|
|
|
|
extern std::string BlobFileName(uint64_t number);
|
|
|
|
extern std::string BlobFileName(const std::string& bdirname, uint64_t number);
|
|
|
|
extern std::string BlobFileName(const std::string& dbname,
|
|
const std::string& blob_dir, uint64_t number);
|
|
|
|
extern std::string ArchivalDirectory(const std::string& dbname);
|
|
|
|
// Return the name of the archived log file with the specified number
|
|
// in the db named by "dbname". The result will be prefixed with "dbname".
|
|
extern std::string ArchivedLogFileName(const std::string& dbname,
|
|
uint64_t num);
|
|
|
|
extern std::string MakeTableFileName(const std::string& name, uint64_t number);
|
|
|
|
extern std::string MakeTableFileName(uint64_t number);
|
|
|
|
// Return the name of sstable with LevelDB suffix
|
|
// created from RocksDB sstable suffixed name
|
|
extern std::string Rocks2LevelTableFileName(const std::string& fullname);
|
|
|
|
// the reverse function of MakeTableFileName
|
|
// TODO(yhchiang): could merge this function with ParseFileName()
|
|
extern uint64_t TableFileNameToNumber(const std::string& name);
|
|
|
|
// Return the name of the sstable with the specified number
|
|
// in the db named by "dbname". The result will be prefixed with
|
|
// "dbname".
|
|
extern std::string TableFileName(const std::vector<DbPath>& db_paths,
|
|
uint64_t number, uint32_t path_id);
|
|
|
|
// Sufficient buffer size for FormatFileNumber.
|
|
const size_t kFormatFileNumberBufSize = 38;
|
|
|
|
extern void FormatFileNumber(uint64_t number, uint32_t path_id, char* out_buf,
|
|
size_t out_buf_size);
|
|
|
|
// Return the name of the descriptor file for the db named by
|
|
// "dbname" and the specified incarnation number. The result will be
|
|
// prefixed with "dbname".
|
|
extern std::string DescriptorFileName(const std::string& dbname,
|
|
uint64_t number);
|
|
|
|
extern std::string DescriptorFileName(uint64_t number);
|
|
|
|
extern const std::string kCurrentFileName; // = "CURRENT"
|
|
|
|
// Return the name of the current file. This file contains the name
|
|
// of the current manifest file. The result will be prefixed with
|
|
// "dbname".
|
|
extern std::string CurrentFileName(const std::string& dbname);
|
|
|
|
// Return the name of the lock file for the db named by
|
|
// "dbname". The result will be prefixed with "dbname".
|
|
extern std::string LockFileName(const std::string& dbname);
|
|
|
|
// Return the name of a temporary file owned by the db named "dbname".
|
|
// The result will be prefixed with "dbname".
|
|
extern std::string TempFileName(const std::string& dbname, uint64_t number);
|
|
|
|
// A helper structure for prefix of info log names.
|
|
struct InfoLogPrefix {
|
|
char buf[260];
|
|
Slice prefix;
|
|
// Prefix with DB absolute path encoded
|
|
explicit InfoLogPrefix(bool has_log_dir, const std::string& db_absolute_path);
|
|
// Default Prefix
|
|
explicit InfoLogPrefix();
|
|
};
|
|
|
|
// Return the name of the info log file for "dbname".
|
|
extern std::string InfoLogFileName(const std::string& dbname,
|
|
const std::string& db_path = "",
|
|
const std::string& log_dir = "");
|
|
|
|
// Return the name of the old info log file for "dbname".
|
|
extern std::string OldInfoLogFileName(const std::string& dbname, uint64_t ts,
|
|
const std::string& db_path = "",
|
|
const std::string& log_dir = "");
|
|
|
|
extern const std::string kOptionsFileNamePrefix; // = "OPTIONS-"
|
|
extern const std::string kTempFileNameSuffix; // = "dbtmp"
|
|
|
|
// Return a options file name given the "dbname" and file number.
|
|
// Format: OPTIONS-[number].dbtmp
|
|
extern std::string OptionsFileName(const std::string& dbname,
|
|
uint64_t file_num);
|
|
extern std::string OptionsFileName(uint64_t file_num);
|
|
|
|
// Return a temp options file name given the "dbname" and file number.
|
|
// Format: OPTIONS-[number]
|
|
extern std::string TempOptionsFileName(const std::string& dbname,
|
|
uint64_t file_num);
|
|
|
|
// Return the name to use for a metadatabase. The result will be prefixed with
|
|
// "dbname".
|
|
extern std::string MetaDatabaseName(const std::string& dbname,
|
|
uint64_t number);
|
|
|
|
// Return the name of the Identity file which stores a unique number for the db
|
|
// that will get regenerated if the db loses all its data and is recreated fresh
|
|
// either from a backup-image or empty
|
|
extern std::string IdentityFileName(const std::string& dbname);
|
|
|
|
// If filename is a rocksdb file, store the type of the file in *type.
|
|
// The number encoded in the filename is stored in *number. If the
|
|
// filename was successfully parsed, returns true. Else return false.
|
|
// info_log_name_prefix is the path of info logs.
|
|
extern bool ParseFileName(const std::string& filename, uint64_t* number,
|
|
const Slice& info_log_name_prefix, FileType* type,
|
|
WalFileType* log_type = nullptr);
|
|
// Same as previous function, but skip info log files.
|
|
extern bool ParseFileName(const std::string& filename, uint64_t* number,
|
|
FileType* type, WalFileType* log_type = nullptr);
|
|
|
|
// Make the CURRENT file point to the descriptor file with the
|
|
// specified number.
|
|
extern IOStatus SetCurrentFile(FileSystem* fs, const std::string& dbname,
|
|
uint64_t descriptor_number,
|
|
FSDirectory* directory_to_fsync);
|
|
|
|
// Make the IDENTITY file for the db
|
|
extern Status SetIdentityFile(Env* env, const std::string& dbname,
|
|
const std::string& db_id = {});
|
|
|
|
// Sync manifest file `file`.
|
|
extern IOStatus SyncManifest(const ImmutableDBOptions* db_options,
|
|
WritableFileWriter* file);
|
|
|
|
// Return list of file names of info logs in `file_names`.
|
|
// The list only contains file name. The parent directory name is stored
|
|
// in `parent_dir`.
|
|
// `db_log_dir` should be the one as in options.db_log_dir
|
|
extern Status GetInfoLogFiles(const std::shared_ptr<FileSystem>& fs,
|
|
const std::string& db_log_dir,
|
|
const std::string& dbname,
|
|
std::string* parent_dir,
|
|
std::vector<std::string>* file_names);
|
|
|
|
extern std::string NormalizePath(const std::string& path);
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|