Revision 8c2c4602ee7b2a6a62d22a2a625009b1aea8e5e5 authored by sdong on 13 May 2014, 21:42:31 UTC, committed by sdong on 13 May 2014, 23:08:21 UTC
Summary: As title Test Plan: make all check. Reviewers: haobo, igor, yhchiang Reviewed By: igor CC: leveldb Differential Revision: https://reviews.facebook.net/D18705
1 parent e30dec9
filename.h
// Copyright (c) 2013, 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.
//
// 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 <string>
#include "rocksdb/slice.h"
#include "rocksdb/status.h"
#include "rocksdb/transaction_log.h"
#include "port/port.h"
namespace rocksdb {
class Env;
class Directory;
enum FileType {
kLogFile,
kDBLockFile,
kTableFile,
kDescriptorFile,
kCurrentFile,
kTempFile,
kInfoLogFile, // Either the current one, or an old one
kMetaDatabase,
kIdentityFile
};
// 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);
static const std::string ARCHIVAL_DIR = "archive";
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);
// 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::string& dbname, uint64_t number);
// 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);
// 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);
// 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="");
// 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.
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 Status SetCurrentFile(Env* env, const std::string& dbname,
uint64_t descriptor_number,
Directory* directory_to_fsync);
// Make the IDENTITY file for the db
extern Status SetIdentityFile(Env* env, const std::string& dbname);
} // namespace rocksdb
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