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/* 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; version 2 of the License.
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,
FRAGMENT_INFO = 7,
EMPTY_ENTRY = 8
};
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,
LCP_FILE = 4
};
/**
* 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;
};
/* optional padding for O_DIRECT */
struct EmptyEntry {
Uint32 SectionType;
Uint32 SectionLength;
/* not used data */
};
};
/**
* 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 TableType;
Uint32 DictTabInfo[1]; // Length = SectionLength - 3
};
/**
* GCP Entry
*/
struct GCPEntry {
Uint32 SectionType;
Uint32 SectionLength;
Uint32 StartGCP;
Uint32 StopGCP;
};
/**
* Fragment Info
*/
struct FragmentInfo {
Uint32 SectionType;
Uint32 SectionLength;
Uint32 TableId;
Uint32 FragmentNo;
Uint32 NoOfRecordsLow;
Uint32 NoOfRecordsHigh;
Uint32 FilePosLow;
Uint32 FilePosHigh;
};
};
/**
* 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 FragId;
Uint32 Data[1]; // Len = Length - 3
};
/**
* Log Entry pre NDBD_FRAGID_VERSION
*/
struct LogEntry_no_fragid {
Uint32 Length;
Uint32 TableId;
// If TriggerEvent & 0x10000 == true then GCI is right after data
Uint32 TriggerEvent;
Uint32 Data[1]; // Len = Length - 2
};
};
/**
* LCP file format
*/
struct LcpFile {
CtlFile::TableList TableList;
CtlFile::TableDescription TableDescription;
DataFile::FragmentHeader FragmentHeader;
DataFile::Record Record;
DataFile::FragmentFooter FragmentFooter;
};
};
#endif
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