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binlogParseGlib.c
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#include <endian.h>
#include <glib.h>
#include <unistd.h>
#define MAX_HEADER_LENGTH 200
#define EVENT_HEADER_LENGTH 19
#define CHECKSUM_LENGTH 4
#define G_LOG_DOMAIN ((gchar*) 0)
//static FormatDescriptionEvent* formatDescriptionEventForGlobalUse=NULL;
static gchar MAGIC_HEADER_CONTENT[4]={'\xfe','b','i','n'};
static gchar* optDatabaseNames=NULL;
static gchar* optTableNames=NULL;
static gsize optStartPos=0;
static gsize optStopPos=0;
static gchar* optStartDatetimeStr=NULL;
static gchar* optStopDatetimeStr=NULL;
static gchar* optSqlTypes=NULL;
static gsize optMaxSplitSize=0;
static gchar* optBinlogFiles=NULL;
static gchar* optOutBinlogFileNameBase=NULL;
static gchar* optLogLevel=NULL;
static gchar* optIncludeGtids=NULL;
static gchar* optExcludeGtids=NULL;
static time_t globalStartTimestamp=0;
static time_t globalStopTimestamp=0;
static GArray* globalIncludeGtidsArray=NULL;
static GArray* globalExcludeGtidsArray=NULL;
enum Status_Stop_Discard
{
GOON=0,
STOP=1,
DISCARD=2
};
enum Binlog_event_type
{
UNKNOWN_EVENT= 0,
START_EVENT_V3= 1,
QUERY_EVENT= 2,
STOP_EVENT= 3,
ROTATE_EVENT= 4,
INTVAR_EVENT= 5,
LOAD_EVENT= 6,
SLAVE_EVENT= 7,
CREATE_FILE_EVENT= 8,
APPEND_BLOCK_EVENT= 9,
EXEC_LOAD_EVENT= 10,
DELETE_FILE_EVENT= 11,
NEW_LOAD_EVENT= 12,
RAND_EVENT= 13,
USER_VAR_EVENT= 14,
FORMAT_DESCRIPTION_EVENT= 15,
XID_EVENT= 16,
BEGIN_LOAD_QUERY_EVENT= 17,
EXECUTE_LOAD_QUERY_EVENT= 18,
TABLE_MAP_EVENT = 19,
PRE_GA_WRITE_ROWS_EVENT = 20,
PRE_GA_UPDATE_ROWS_EVENT = 21,
PRE_GA_DELETE_ROWS_EVENT = 22,
WRITE_ROWS_EVENT_V1 = 23,
UPDATE_ROWS_EVENT_V1 = 24,
DELETE_ROWS_EVENT_V1 = 25,
INCIDENT_EVENT= 26,
HEARTBEAT_LOG_EVENT= 27,
IGNORABLE_LOG_EVENT= 28,
ROWS_QUERY_LOG_EVENT= 29,
WRITE_ROWS_EVENT = 30,
UPDATE_ROWS_EVENT = 31,
DELETE_ROWS_EVENT = 32,
GTID_LOG_EVENT= 33,
ANONYMOUS_GTID_LOG_EVENT= 34,
PREVIOUS_GTIDS_LOG_EVENT= 35,
TRANSACTION_CONTEXT_EVENT= 36,
VIEW_CHANGE_EVENT= 37,
XA_PREPARE_LOG_EVENT= 38,
ENUM_END_EVENT
};
static gchar Binlog_event_type_name[][30]={
"UNKNOWN_EVENT",
"START_EVENT_V3",
"QUERY_EVENT",
"STOP_EVENT",
"ROTATE_EVENT",
"INTVAR_EVENT",
"LOAD_EVENT",
"SLAVE_EVENT",
"CREATE_FILE_EVENT",
"APPEND_BLOCK_EVENT",
"EXEC_LOAD_EVENT",
"DELETE_FILE_EVENT",
"NEW_LOAD_EVENT",
"RAND_EVENT",
"USER_VAR_EVENT",
"FORMAT_DESCRIPTION_EVENT",
"XID_EVENT",
"BEGIN_LOAD_QUERY_EVENT",
"EXECUTE_LOAD_QUERY_EVENT",
"TABLE_MAP_EVENT",
"PRE_GA_WRITE_ROWS_EVENT",
"PRE_GA_UPDATE_ROWS_EVENT",
"PRE_GA_DELETE_ROWS_EVENT",
"WRITE_ROWS_EVENT_V1",
"UPDATE_ROWS_EVENT_V1",
"DELETE_ROWS_EVENT_V1",
"INCIDENT_EVENT",
"HEARTBEAT_LOG_EVENT",
"IGNORABLE_LOG_EVENT",
"ROWS_QUERY_LOG_EVENT",
"WRITE_ROWS_EVENT",
"UPDATE_ROWS_EVENT",
"DELETE_ROWS_EVENT",
"GTID_LOG_EVENT",
"ANONYMOUS_GTID_LOG_EVENT",
"PREVIOUS_GTIDS_LOG_EVENT",
"TRANSACTION_CONTEXT_EVENT",
"VIEW_CHANGE_EVENT",
"XA_PREPARE_LOG_EVENT",
"ENUM_END_EVENT"
};
typedef enum enum_dml_types {
INSERT =0,
UPDATE =1,
DELETE =2,
UNKNOWN_TYPE
} enum_dml_types;
typedef enum enum_field_types {
MYSQL_TYPE_DECIMAL, MYSQL_TYPE_TINY,
MYSQL_TYPE_SHORT, MYSQL_TYPE_LONG,
MYSQL_TYPE_FLOAT, MYSQL_TYPE_DOUBLE,
MYSQL_TYPE_NULL, MYSQL_TYPE_TIMESTAMP,
MYSQL_TYPE_LONGLONG,MYSQL_TYPE_INT24,
MYSQL_TYPE_DATE, MYSQL_TYPE_TIME,
MYSQL_TYPE_DATETIME, MYSQL_TYPE_YEAR,
MYSQL_TYPE_NEWDATE, MYSQL_TYPE_VARCHAR,
MYSQL_TYPE_BIT,
MYSQL_TYPE_TIMESTAMP2,
MYSQL_TYPE_DATETIME2,
MYSQL_TYPE_TIME2,
MYSQL_TYPE_JSON=245,
MYSQL_TYPE_NEWDECIMAL=246,
MYSQL_TYPE_ENUM=247,
MYSQL_TYPE_SET=248,
MYSQL_TYPE_TINY_BLOB=249,
MYSQL_TYPE_MEDIUM_BLOB=250,
MYSQL_TYPE_LONG_BLOB=251,
MYSQL_TYPE_BLOB=252,
MYSQL_TYPE_VAR_STRING=253,
MYSQL_TYPE_STRING=254,
MYSQL_TYPE_GEOMETRY=255
} enum_field_types;
typedef enum enum_flag
{
/* Last event of a statement */
STMT_END_F = (1U << 0),
/* Value of the OPTION_NO_FOREIGN_KEY_CHECKS flag in thd->options */
NO_FOREIGN_KEY_CHECKS_F = (1U << 1),
/* Value of the OPTION_RELAXED_UNIQUE_CHECKS flag in thd->options */
RELAXED_UNIQUE_CHECKS_F = (1U << 2),
/**
Indicates that rows in this event are complete, that is contain
values for all columns of the table.
*/
COMPLETE_ROWS_F = (1U << 3)
} enum_flag;
typedef struct _GtidSetInfo{
gchar* uuid;
guint64 startSeqNo;
guint64 stopSeqNo;
} GtidSetInfo;
typedef struct _EventHeader{
guint32 binlogTimestamp;
guint8 eventType;
guint32 serverId;
guint32 eventLength;
guint32 nextEventPos;
guint16 flag;
gchar *rawEventHeader;
} EventHeader;
typedef struct _FormatDescriptionEvent{
EventHeader *eventHeader;
gchar *rawFormatDescriptionEventDataDetail;
} FormatDescriptionEvent;
typedef struct _TableMapEvent{
EventHeader *eventHeader;
gchar *rawTableMapEventDataDetail;
gsize databaseNameLength;
gchar* databaseName;
gsize tableNameLength;
gchar* tableName;
guint64 tableId;
gsize columnNumber;
GByteArray *columnTypeArray;
guint16 *columnMetadataArray;
gsize metadataBlockSize;
} TableMapEvent;
typedef struct _RowEvent{
EventHeader *eventHeader;
gchar *rawRowEventDataDetail;
} RowEvent;
typedef struct _QueryEvent{
EventHeader *eventHeader;
gchar *rawQueryEventDataDetail;
gsize databaseNameLength;
gchar *databaseName;
gchar sqlTextLength;
gchar *sqlText;
} QueryEvent;
typedef struct _GtidEvent{
EventHeader *eventHeader;
gchar *rawGtidEventDataDetail;
gchar *uuid;
guint64 seqNo;
} GtidEvent;
typedef struct _XidEvent{
EventHeader *eventHeader;
gchar *rawXidEventDataDetail;
guint64 xid;
} XidEvent;
typedef struct _EventWrapper{
guint8 eventType;
gpointer eventPointer;
} EventWrapper;
typedef struct _LeastExecutionUnitEvents{
TableMapEvent *tableMapEvent;
GList *rowEventList;
guint8 originalRowEventType;
} LeastExecutionUnitEvents;
static FormatDescriptionEvent* formatDescriptionEventForGlobalUse=NULL;
/*
typedef struct _Transaction{
GList leastExecutionUnitEventsList;
} Transaction;
*/
gboolean isGtidEventInGtidSet(GtidEvent* gtidEvent, GtidSetInfo* gtidSetInfo){
if((0==memcmp(gtidEvent->uuid,gtidSetInfo->uuid,16)) ){
if((gtidEvent->seqNo >= gtidSetInfo->startSeqNo) && ( gtidEvent->seqNo <=gtidSetInfo->stopSeqNo ) ){
return TRUE;
}
}
return FALSE;
}
int isGtidEventInGtidSetInfoArray(GtidEvent* gtidEvent, GArray* gtidSetInfoArray){
gsize i=0;
GtidSetInfo* gtidSetInfo;
for(;i<gtidSetInfoArray->len;i++){
gtidSetInfo = &g_array_index(gtidSetInfoArray,GtidSetInfo,i);
if(isGtidEventInGtidSet(gtidEvent,gtidSetInfo)){
return TRUE;
}
}
return FALSE;
}
gboolean isTransactionShouldDiscardForGtid(GtidEvent* gtidEvent){
if((NULL ==globalIncludeGtidsArray) || (isGtidEventInGtidSetInfoArray(gtidEvent,globalIncludeGtidsArray)) ){
if((NULL == globalExcludeGtidsArray) || (!isGtidEventInGtidSetInfoArray(gtidEvent,globalExcludeGtidsArray)) ){
return FALSE;
}
}
return TRUE;
}
gchar* packUuidInto16Bytes(gchar* originalUuid){
gchar* binaryUuid=g_new0(gchar,16);
gsize originalUuidLen;
originalUuidLen=strlen(originalUuid);
gsize effectiveCharIndex=0;
int i=0;
guint8 tempValue=0;
for(i=0;i<originalUuidLen;i++){
if('-' == originalUuid[i]){
continue;
}
if( (originalUuid[i] >='0') && (originalUuid[i] <= '9' )){
tempValue=originalUuid[i]-'0';
}
if( (g_ascii_tolower(originalUuid[i]) >='a') && (g_ascii_tolower(originalUuid[i]) <= 'f' ) ){
tempValue=g_ascii_tolower(originalUuid[i]) - 'a' + 10;
}
if(0==(effectiveCharIndex%2)){
tempValue = tempValue<<4;
}
binaryUuid[effectiveCharIndex/2]+=tempValue;
effectiveCharIndex++;
}
return binaryUuid;
}
gchar* constructFileNameWithPostfixIndex(gchar* baseName, gsize postfixIndex, gsize postfixDisplayLength){
gchar* completeFileName;
//completeFileName=g_new0(gchar,strlen(baseName)+postfixDisplayLength+1+1);
completeFileName=g_strdup_printf("%s.%06lu",baseName,postfixIndex);
return completeFileName;
}
gboolean isDatabaseShouldApply(gchar* databaseName){
if (NULL == optDatabaseNames){
return TRUE;
}
gchar **databaseNameArray;
databaseNameArray=g_strsplit(optDatabaseNames,",",0);
int i=0;
while( databaseNameArray[i] ){
if(0 == g_ascii_strcasecmp(databaseName,databaseNameArray[i])){
return TRUE;
}
i++;
}
return FALSE;
}
gboolean isTableShouldApply(gchar* tableName){
if (NULL == optTableNames){
return TRUE;
}
gchar **tableNameArray;
tableNameArray=g_strsplit(optTableNames,",",0);
int i=0;
while( tableNameArray[i] ){
if(0 == g_ascii_strcasecmp(tableName,tableNameArray[i])){
return TRUE;
}
i++;
}
return FALSE;
}
gboolean isEventTypeShouldApply(guint8 eventType){
if (NULL == optSqlTypes){
return TRUE;
}
guint8 dmlTypeArray[4]={0};
gchar **sqlTypeArray;
sqlTypeArray=g_strsplit(optSqlTypes,",",0);
int i=0;
while( sqlTypeArray[i] ){
if(0 == g_ascii_strcasecmp("INSERT",sqlTypeArray[i])){
dmlTypeArray[INSERT]=1;
}else if(0 == g_ascii_strcasecmp("UPDATE",sqlTypeArray[i])){
dmlTypeArray[UPDATE]=1;
}else if(0 == g_ascii_strcasecmp("DELETE",sqlTypeArray[i])){
dmlTypeArray[DELETE]=1;
}
i++;
}
guint8 dmlType;
switch (eventType) {
case UPDATE_ROWS_EVENT:
dmlType=UPDATE;
break;
case DELETE_ROWS_EVENT:
dmlType=DELETE;
break;
case WRITE_ROWS_EVENT:
dmlType=INSERT;
break;
default:
dmlType=UNKNOWN_TYPE;
}
if( 0 ==dmlTypeArray[dmlType] ){
return FALSE;
}
else{
return TRUE;
}
}
/*
gboolean isInDateTimeRange(guint32 timestamp){
struct tm tm;
time_t startTimeStamp;
time_t stopTimeStamp;
if(NULL != optStartDatetimeStr){
if ( strptime(optStartDatetimeStr, "%Y-%m-%d %H:%M:%S", &tm) != NULL ){
startTimeStamp = mktime(&tm);
}else {
g_error("failed to parsing startDatetimeStr");
}
}else {
startTimeStamp=0;
}
if(NULL != optStopDatetimeStr){
if ( strptime(optStopDatetimeStr, "%Y-%m-%d %H:%M:%S", &tm) != NULL ){
stopTimeStamp = mktime(&tm);
}else {
g_error("failed to parsing stopDatetimeStr");
}
}else {
stopTimeStamp=G_MAXUINT32;
}
if(timestamp >= startTimeStamp && timestamp <= stopTimeStamp){
return TRUE;
}
return FALSE;
}
*/
gboolean isShouldStopOrDiscardForDateTimeRange(guint32 timestamp){
if(timestamp <globalStartTimestamp){
return DISCARD;
}
if(timestamp >globalStopTimestamp){
return STOP;
}
return GOON;
}
gboolean getNextPosOrStop(gsize *nextEventPos, gsize fileIndex, gboolean isLastFile){
gboolean isShouldStop=FALSE;
if( (0 == fileIndex) && ((*nextEventPos) < optStartPos) ){
*nextEventPos = optStartPos;
}
if( (TRUE == isLastFile) && (optStopPos >0) && ((*nextEventPos) >= optStopPos) ){
isShouldStop = TRUE;
}
return isShouldStop;
}
gsize getRawEventDataLengthWithChecksum(EventHeader *eventHeader){
gsize rawEventDataLength;
rawEventDataLength=eventHeader->eventLength - EVENT_HEADER_LENGTH; // - CHECKSUM_LENGTH
return rawEventDataLength;
}
int setFormatDescriptionEventForGlobalUse(FormatDescriptionEvent* formatDescriptionEvent){
formatDescriptionEventForGlobalUse=formatDescriptionEvent;
return 0;
}
FormatDescriptionEvent* getFormatDescriptionEventForGlobalUse(){
return formatDescriptionEventForGlobalUse;
}
GIOChannel* getIoChannelForWrite(gchar* fileName){
GIOChannel * toWriteChannel;
toWriteChannel=g_io_channel_new_file(fileName,"w",NULL);
if (NULL == toWriteChannel){
g_warning("failed to create file %s", fileName);
return NULL;
}
GIOStatus encodingSetStatus;
encodingSetStatus = g_io_channel_set_encoding(toWriteChannel,NULL,NULL);
if (G_IO_STATUS_NORMAL != encodingSetStatus ){
g_warning("failed to set to binary mode");
return NULL;
}
return toWriteChannel;
}
EventHeader* getEventHeaderFromWrapper(EventWrapper* eventWrapper){
guint8 eventType;
eventType=eventWrapper->eventType;
EventHeader* eventHeader;
eventHeader=NULL;
switch( eventType ){
case FORMAT_DESCRIPTION_EVENT:{
eventHeader = ((FormatDescriptionEvent*)eventWrapper->eventPointer)->eventHeader;
break;
}
case TABLE_MAP_EVENT:{
eventHeader = ((TableMapEvent*)eventWrapper->eventPointer)->eventHeader;
break;
}
case WRITE_ROWS_EVENT:
case UPDATE_ROWS_EVENT:
case DELETE_ROWS_EVENT:{
eventHeader = ((RowEvent*)eventWrapper->eventPointer)->eventHeader;
break;
}
case QUERY_EVENT:{
eventHeader = ((QueryEvent*)eventWrapper->eventPointer)->eventHeader;
break;
}
case XID_EVENT:{
eventHeader = ((XidEvent*)eventWrapper->eventPointer)->eventHeader;
break;
}
case GTID_LOG_EVENT:{
eventHeader = ((GtidEvent*)eventWrapper->eventPointer)->eventHeader;
break;
}
default:
eventHeader = NULL;
}
return eventHeader;
}
gchar* getRawEventDataFromWrapper(EventWrapper* eventWrapper){
guint8 eventType;
eventType=eventWrapper->eventType;
gchar* rawEventData;
rawEventData=NULL;
switch( eventType ){
case FORMAT_DESCRIPTION_EVENT:{
rawEventData = ((FormatDescriptionEvent*)eventWrapper->eventPointer)->rawFormatDescriptionEventDataDetail;
break;
}
case TABLE_MAP_EVENT:{
rawEventData = ((TableMapEvent*)eventWrapper->eventPointer)->rawTableMapEventDataDetail;
break;
}
case WRITE_ROWS_EVENT:
case UPDATE_ROWS_EVENT:
case DELETE_ROWS_EVENT:{
rawEventData = ((RowEvent*)eventWrapper->eventPointer)->rawRowEventDataDetail;
break;
}
case QUERY_EVENT:{
rawEventData = ((QueryEvent*)eventWrapper->eventPointer)->rawQueryEventDataDetail;
break;
}
case XID_EVENT:{
rawEventData = ((XidEvent*)eventWrapper->eventPointer)->rawXidEventDataDetail;
break;
}
case GTID_LOG_EVENT:{
rawEventData = ((GtidEvent*)eventWrapper->eventPointer)->rawGtidEventDataDetail;
break;
}
default:
rawEventData = NULL;
}
return rawEventData;
}
int printHex(gchar* dataBuffer, gsize dataBufferLength){
gsize i;
i=0;
for(;i<dataBufferLength;i++){
if((i>0) &&(0==(i%16))){
g_debug("%02x",(guint8)dataBuffer[i]);
}else{
g_debug("%02x",(guint8)dataBuffer[i]);
}
}
return 0;
}
int printEventInHex(guint8 eventType, gchar* rawEventHeader, gchar* eventDataDetail, gsize eventDataDetailLength){
g_warning("%s header:",Binlog_event_type_name[eventType]);
printHex(rawEventHeader,EVENT_HEADER_LENGTH);
g_debug("data:");
printHex(eventDataDetail,eventDataDetailLength);
return 0;
}
//
int printEventWrapperInHex(EventWrapper *eventWrapper){
guint8 eventType;
eventType=eventWrapper->eventType;
gchar* rawEventHeader;
gchar* eventDataDetail;
gsize eventDataDetailLength;
switch ( eventType) {
case FORMAT_DESCRIPTION_EVENT:{
rawEventHeader=((FormatDescriptionEvent*)(eventWrapper->eventPointer))->eventHeader->rawEventHeader;
eventDataDetail=((FormatDescriptionEvent*)(eventWrapper->eventPointer))->rawFormatDescriptionEventDataDetail;
eventDataDetailLength=getRawEventDataLengthWithChecksum(((FormatDescriptionEvent*)(eventWrapper->eventPointer))->eventHeader);
break;
}
case TABLE_MAP_EVENT:{
rawEventHeader=((TableMapEvent*)(eventWrapper->eventPointer))->eventHeader->rawEventHeader;
eventDataDetail=((TableMapEvent*)(eventWrapper->eventPointer))->rawTableMapEventDataDetail;
eventDataDetailLength=getRawEventDataLengthWithChecksum(((TableMapEvent*)(eventWrapper->eventPointer))->eventHeader);
break;
}
case QUERY_EVENT:{
rawEventHeader=((QueryEvent*)(eventWrapper->eventPointer))->eventHeader->rawEventHeader;
eventDataDetail=((QueryEvent*)(eventWrapper->eventPointer))->rawQueryEventDataDetail;
eventDataDetailLength=getRawEventDataLengthWithChecksum(((QueryEvent*)(eventWrapper->eventPointer))->eventHeader);
break;
}
case XID_EVENT:{
rawEventHeader=((XidEvent*)(eventWrapper->eventPointer))->eventHeader->rawEventHeader;
eventDataDetail=((XidEvent*)(eventWrapper->eventPointer))->rawXidEventDataDetail;
eventDataDetailLength=getRawEventDataLengthWithChecksum(((XidEvent*)(eventWrapper->eventPointer))->eventHeader);
break;
}
case WRITE_ROWS_EVENT:
case UPDATE_ROWS_EVENT:
case DELETE_ROWS_EVENT:{
rawEventHeader=((RowEvent*)(eventWrapper->eventPointer))->eventHeader->rawEventHeader;
eventDataDetail=((RowEvent*)(eventWrapper->eventPointer))->rawRowEventDataDetail;
eventDataDetailLength=getRawEventDataLengthWithChecksum(((RowEvent*)(eventWrapper->eventPointer))->eventHeader);
}
default :{
g_warning("skip to print the event %s",Binlog_event_type_name[eventType] );
return 0;
}
}
printEventInHex(eventType,rawEventHeader,eventDataDetail,eventDataDetailLength);
return 0;
}
int printRowEventInHex(RowEvent *rowEvent){
gchar* rawEventHeader;
rawEventHeader=rowEvent->eventHeader->rawEventHeader;
gchar* eventDataDetail;
eventDataDetail=rowEvent->rawRowEventDataDetail;
guint8 eventType;
eventType=rowEvent->eventHeader->eventType;
gsize eventDataDetailLength;
eventDataDetailLength=getRawEventDataLengthWithChecksum(rowEvent->eventHeader);
printEventInHex(eventType,rawEventHeader,eventDataDetail,eventDataDetailLength);
return 0;
}
int printLeastExecutionUnitEventsInHex(LeastExecutionUnitEvents *leastExecutionUnitEvents){
TableMapEvent *tableMapEvent;
tableMapEvent=leastExecutionUnitEvents->tableMapEvent;
printEventInHex(TABLE_MAP_EVENT,tableMapEvent->eventHeader->rawEventHeader,tableMapEvent->rawTableMapEventDataDetail,getRawEventDataLengthWithChecksum(tableMapEvent->eventHeader));
GList *rowEventList;
rowEventList=leastExecutionUnitEvents->rowEventList;
RowEvent *rowEvent;
while( NULL != rowEventList ){
rowEvent=(RowEvent *)rowEventList->data;
printRowEventInHex(rowEvent);
rowEventList=rowEventList->next;
}
return 0;
}
gboolean isRowEvent(guint8 eventType){
if ( (eventType == UPDATE_ROWS_EVENT) || (eventType == DELETE_ROWS_EVENT) || (eventType == WRITE_ROWS_EVENT) ){
return TRUE;
}
else
return FALSE;
}
gboolean isTransactionBeginText(gchar* sqlText){
if ( 0 == g_ascii_strcasecmp(sqlText, "BEGIN") ){
return TRUE;
}
else
return FALSE;
}
gchar* getStringAndAdvance(gchar* buffer, gsize stringLength, gchar* stringValue){
memcpy(stringValue,buffer,stringLength);
return buffer+stringLength;
}
gchar* getGuint64AndAdvance(gchar *buffer, guint64 *value ){
memcpy(value, buffer,sizeof(guint64));
return buffer+sizeof(guint64);
}
gchar* getGuint48AndAdvance(gchar *buffer, guint64 *value ){
*value=0;
gsize uint48Length=6;
memcpy(value,buffer,uint48Length);
return buffer+uint48Length;
}
gchar* getGuint32AndAdvance(gchar *buffer, guint32 *value ){
memcpy(value, buffer,sizeof(guint32));
return buffer+sizeof(guint32);
}
gchar* getGuint16AndAdvance(gchar *buffer, guint16 *value ){
memcpy(value, buffer,sizeof(guint16));
return buffer+sizeof(guint16);
}
gchar* getGuint8AndAdvance(gchar *buffer, guint8 *value ){
memcpy(value, buffer,sizeof(guint8));
return buffer+sizeof(guint8);
}
gchar* getPackedIntegerAndAdvance(gchar* buffer, guint64 *value){
*value=0;
guint8 lengthIndicator;
memcpy(&lengthIndicator,buffer,sizeof(guint8));
if( 251 >= lengthIndicator){
lengthIndicator=1;
}
else if(252 == lengthIndicator){
lengthIndicator=2;
buffer +=1;
}
else if(253 == lengthIndicator){
lengthIndicator=3;
buffer +=1;
}
else if(254 == lengthIndicator){
lengthIndicator=8;
buffer +=1;
}
memcpy(value, buffer,lengthIndicator);
return buffer+lengthIndicator;
}
gsize getBitMapLengthByColumnNumber(gsize columnNumber){
return (columnNumber+7)/8;
}
gboolean isBitmapSet(gchar* bitmap, gsize bitPos)
{
return ((gchar*)bitmap)[bitPos / 8] & (1 << (bitPos & 7));
}
int parseHeader(gchar *buffer, EventHeader* eventHeader){
eventHeader->rawEventHeader=buffer;
guint32 binlogTimestamp ;
buffer=getGuint32AndAdvance(buffer,&binlogTimestamp);
eventHeader->binlogTimestamp=binlogTimestamp;
guint8 eventType;
buffer=getGuint8AndAdvance(buffer,&eventType);
eventHeader->eventType=eventType;
guint32 serverId;
buffer=getGuint32AndAdvance(buffer,&serverId);
eventHeader->serverId=serverId;
guint32 eventLength;
buffer=getGuint32AndAdvance(buffer,&eventLength);
eventHeader->eventLength=eventLength;
guint32 nextEventPos;
buffer=getGuint32AndAdvance(buffer,&nextEventPos);
eventHeader->nextEventPos=nextEventPos;
guint16 flag;
buffer=getGuint16AndAdvance(buffer,&flag);
eventHeader->flag=flag;
return 0;
}
int updateRawEventHeaderByModifyConstructMember(EventHeader *eventHeader){
gchar* rawEventHeader;
rawEventHeader=eventHeader->rawEventHeader;
memcpy(rawEventHeader,&(eventHeader->binlogTimestamp),sizeof(guint32));
rawEventHeader+=sizeof(guint32);
memcpy(rawEventHeader,&(eventHeader->eventType),sizeof(guint8));
rawEventHeader+=sizeof(guint8);
memcpy(rawEventHeader,&(eventHeader->serverId),sizeof(guint32));
rawEventHeader+=sizeof(guint32);
memcpy(rawEventHeader,&(eventHeader->eventLength),sizeof(guint32));
rawEventHeader+=sizeof(guint32);
memcpy(rawEventHeader,&(eventHeader->nextEventPos),sizeof(guint32));
rawEventHeader+=sizeof(guint32);
memcpy(rawEventHeader,&(eventHeader->flag),sizeof(guint16));
rawEventHeader+=sizeof(guint16);
return 0;
}
gsize modifyAndReturnNextEventPos(EventHeader *eventHeader, gsize currentPos){
eventHeader->nextEventPos= eventHeader->eventLength + currentPos ;
updateRawEventHeaderByModifyConstructMember(eventHeader);
gsize nextEventPos;
nextEventPos = eventHeader->nextEventPos;
return nextEventPos;
}
gboolean markLastRowEventInStatement(EventWrapper* eventWrapper){
if( (! eventWrapper) || (! isRowEvent(eventWrapper->eventType))){
return FALSE;
}
gchar* rawRowEventDataDetail=((RowEvent*)(eventWrapper->eventPointer))->rawRowEventDataDetail;
gsize rowFlagOffset=6;
guint16 rowFlag;
rowFlag=getGuint16AndAdvance(rawRowEventDataDetail+rowFlagOffset,&rowFlag);
rowFlag = (rowFlag | STMT_END_F);
memcpy(rawRowEventDataDetail+rowFlagOffset,&rowFlag,sizeof(guint16));
return TRUE;
}
guint32 decimalBinarySize( guint32 precision,guint32 scale)
{
static const int dig2bytes[10]= {0, 1, 1, 2, 2, 3, 3, 4, 4, 4};
guint32 tmp;
if(scale<precision){
tmp=scale;
scale=precision;
precision=tmp;
}
int intg= scale-precision,
intg0= intg/9, frac0= precision/9,
intg0x= intg-intg0*9, frac0x= precision-frac0*9;
return intg0 * sizeof(guint32) + dig2bytes[intg0x]+
frac0 * sizeof(guint32) + dig2bytes[frac0x];
}
guint32 myTimeBinaryLength(guint32 dec)
{
//BAPI_ASSERT(dec <= DATETIME_MAX_DECIMALS);
return 3 + (dec + 1) / 2;
}
guint32 uintMax(guint32 bits) {
//BAPI_ASSERT(static_cast<unsigned int>(bits) <= sizeof(unsigned int) * CHAR_BIT);
return (((1U << (bits - 1)) - 1) << 1) | 1;
}
guint32 myTimestampBinaryLength(guint32 dec)
{
//BAPI_ASSERT(dec <= DATETIME_MAX_DECIMALS);
return 4 + (dec + 1) / 2;
}
guint32 myDatetimeBinaryLength(guint32 dec)
{
//BAPI_ASSERT(dec <= DATETIME_MAX_DECIMALS);
return 5 + (dec + 1) / 2;
}
guint32
maxDisplayLengthForField(enum_field_types sqlType, guint32 metadata)
{
//BAPI_ASSERT(metadata >> 16 == 0);
switch (sqlType) {
case MYSQL_TYPE_NEWDECIMAL:
return metadata >> 8;
case MYSQL_TYPE_FLOAT:
return 12;
case MYSQL_TYPE_DOUBLE:
return 22;
case MYSQL_TYPE_SET:
case MYSQL_TYPE_ENUM:
return metadata & 0x00ff;
case MYSQL_TYPE_STRING:
{
guint8 type= metadata >> 8;
if (type == MYSQL_TYPE_SET || type == MYSQL_TYPE_ENUM)
return metadata & 0xff;
else
return (((metadata >> 4) & 0x300) ^ 0x300) + (metadata & 0x00ff);
}
case MYSQL_TYPE_YEAR:
case MYSQL_TYPE_TINY:
return 4;
case MYSQL_TYPE_SHORT:
return 6;
case MYSQL_TYPE_INT24:
return 9;
case MYSQL_TYPE_LONG:
return 11;
case MYSQL_TYPE_LONGLONG:
return 20;
case MYSQL_TYPE_NULL:
return 0;
case MYSQL_TYPE_NEWDATE:
return 3;
case MYSQL_TYPE_DATE:
case MYSQL_TYPE_TIME:
case MYSQL_TYPE_TIME2:
return 3;