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- // 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
-
- #ifndef STORAGE_LEVELDB_DB_FILENAME_H_
- #define STORAGE_LEVELDB_DB_FILENAME_H_
-
- #include <stdint.h>
- #include <string>
- #include "leveldb/slice.h"
- #include "leveldb/status.h"
- #include "port/port.h"
-
- namespace leveldb {
-
- class Env;
-
- enum FileType {
- kLogFile,
- kDBLockFile,
- kTableFile,
- kDescriptorFile,
- kCurrentFile,
- kTempFile,
- kInfoLogFile, // Either the current one, or an old one
- };
-
- // 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);
-
- // 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);
-
- // Return the name of the old info log file for "dbname".
- extern std::string OldInfoLogFileName(const std::string& dbname);
-
- // If filename is a leveldb 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);
-
- // 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);
-
-
- }
-
- #endif // STORAGE_LEVELDB_DB_FILENAME_H_
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