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80 lines
2.8 KiB
80 lines
2.8 KiB
// Copyright (c) 2011 The LevelDB Authors. All rights reserved. |
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// Use of this source code is governed by a BSD-style license that can be |
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// found in the LICENSE file. See the AUTHORS file for names of contributors. |
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// |
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// File names used by DB code |
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#ifndef STORAGE_LEVELDB_DB_FILENAME_H_ |
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#define STORAGE_LEVELDB_DB_FILENAME_H_ |
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#include <stdint.h> |
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#include <string> |
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#include "leveldb/slice.h" |
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#include "leveldb/status.h" |
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#include "port/port.h" |
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namespace leveldb { |
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class Env; |
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enum FileType { |
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kLogFile, |
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kDBLockFile, |
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kTableFile, |
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kDescriptorFile, |
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kCurrentFile, |
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kTempFile, |
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kInfoLogFile // Either the current one, or an old one |
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}; |
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// Return the name of the log file with the specified number |
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// in the db named by "dbname". The result will be prefixed with |
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// "dbname". |
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extern std::string LogFileName(const std::string& dbname, uint64_t number); |
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// Return the name of the sstable with the specified number |
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// in the db named by "dbname". The result will be prefixed with |
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// "dbname". |
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extern std::string TableFileName(const std::string& dbname, uint64_t number); |
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// Return the name of the descriptor file for the db named by |
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// "dbname" and the specified incarnation number. The result will be |
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// prefixed with "dbname". |
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extern std::string DescriptorFileName(const std::string& dbname, |
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uint64_t number); |
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// Return the name of the current file. This file contains the name |
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// of the current manifest file. The result will be prefixed with |
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// "dbname". |
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extern std::string CurrentFileName(const std::string& dbname); |
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// Return the name of the lock file for the db named by |
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// "dbname". The result will be prefixed with "dbname". |
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extern std::string LockFileName(const std::string& dbname); |
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// Return the name of a temporary file owned by the db named "dbname". |
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// The result will be prefixed with "dbname". |
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extern std::string TempFileName(const std::string& dbname, uint64_t number); |
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// Return the name of the info log file for "dbname". |
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extern std::string InfoLogFileName(const std::string& dbname); |
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// Return the name of the old info log file for "dbname". |
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extern std::string OldInfoLogFileName(const std::string& dbname); |
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// If filename is a leveldb file, store the type of the file in *type. |
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// The number encoded in the filename is stored in *number. If the |
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// filename was successfully parsed, returns true. Else return false. |
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extern bool ParseFileName(const std::string& filename, |
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uint64_t* number, |
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FileType* type); |
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// Make the CURRENT file point to the descriptor file with the |
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// specified number. |
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extern Status SetCurrentFile(Env* env, const std::string& dbname, |
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uint64_t descriptor_number); |
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} // namespace leveldb |
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#endif // STORAGE_LEVELDB_DB_FILENAME_H_
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