BackupFormat.hpp
上传用户:romrleung
上传日期:2022-05-23
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文件大小:3k
- /* Copyright (C) 2003 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #ifndef BACKUP_FORMAT_HPP
- #define BACKUP_FORMAT_HPP
- #include <ndb_types.h>
- static const char BACKUP_MAGIC[] = { 'N', 'D', 'B', 'B', 'C', 'K', 'U', 'P' };
- struct BackupFormat {
- /**
- * Section types in file
- */
- enum SectionType {
- FILE_HEADER = 1,
- FRAGMENT_HEADER = 2,
- FRAGMENT_FOOTER = 3,
- TABLE_LIST = 4,
- TABLE_DESCRIPTION = 5,
- GCP_ENTRY = 6
- };
- struct FileHeader {
- char Magic[8];
- Uint32 NdbVersion;
- Uint32 SectionType;
- Uint32 SectionLength;
- Uint32 FileType;
- Uint32 BackupId;
- Uint32 BackupKey_0;
- Uint32 BackupKey_1;
- Uint32 ByteOrder;
- };
-
- /**
- * File types
- */
- enum FileType {
- CTL_FILE = 1,
- LOG_FILE = 2,
- DATA_FILE = 3
- };
-
- /**
- * Data file formats
- */
- struct DataFile {
- struct FragmentHeader {
- Uint32 SectionType;
- Uint32 SectionLength;
- Uint32 TableId;
- Uint32 FragmentNo;
- Uint32 ChecksumType;
- };
-
- struct VariableData {
- Uint32 Sz;
- Uint32 Id;
- Uint32 Data[1];
- };
-
- struct Record {
- Uint32 Length;
- Uint32 NullBitmask[1];
- Uint32 DataFixedKeys[1];
- Uint32 DataFixedAttributes[1];
- VariableData DataVariableAttributes[1];
- };
-
- struct FragmentFooter {
- Uint32 SectionType;
- Uint32 SectionLength;
- Uint32 TableId;
- Uint32 FragmentNo;
- Uint32 NoOfRecords;
- Uint32 Checksum;
- };
- };
- /**
- * CTL file formats
- */
- struct CtlFile {
-
- /**
- * Table list
- */
- struct TableList {
- Uint32 SectionType;
- Uint32 SectionLength;
- Uint32 TableIds[1]; // Length = SectionLength - 2
- };
- /**
- * Table description(s)
- */
- struct TableDescription {
- Uint32 SectionType;
- Uint32 SectionLength;
- Uint32 DictTabInfo[1]; // Length = SectionLength - 2
- };
- /**
- * GCP Entry
- */
- struct GCPEntry {
- Uint32 SectionType;
- Uint32 SectionLength;
- Uint32 StartGCP;
- Uint32 StopGCP;
- };
- };
- /**
- * LOG file format
- */
- struct LogFile {
- /**
- * Log Entry
- */
- struct LogEntry {
- Uint32 Length;
- Uint32 TableId;
- // If TriggerEvent & 0x10000 == true then GCI is right after data
- Uint32 TriggerEvent;
- Uint32 Data[1]; // Len = Length - 2
- };
- };
- };
- #endif