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mysql-binlog-dump.c
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1313 lines (1099 loc) · 34 KB
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/* $%BEGINLICENSE%$
Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved.
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., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
$%ENDLICENSE%$ */
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <glib/gstdio.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <lua.h>
#include "glib-ext.h"
#include "chassis-mainloop.h"
#include "chassis-log.h"
#include "chassis-keyfile.h"
#include "network-mysqld-proto.h"
#include "network-mysqld-binlog.h"
#define S(x) x->str, x->len
/* forward decl */
const char *network_mysqld_proto_field_get_typestring(enum enum_field_types type);
typedef struct {
MYSQL_FIELD *fielddef;
union {
guint64 i;
gchar *s;
double d;
} data;
guint64 data_len;
gboolean is_null;
} network_mysqld_proto_field;
network_mysqld_proto_field *network_mysqld_proto_field_new() {
network_mysqld_proto_field *field;
field = g_new0(network_mysqld_proto_field, 1);
return field;
}
void network_mysqld_proto_field_free(network_mysqld_proto_field *field) {
if (!field) return;
switch ((guchar)field->fielddef->type) {
case MYSQL_TYPE_TIMESTAMP:
case MYSQL_TYPE_DATE:
case MYSQL_TYPE_DATETIME:
case MYSQL_TYPE_TIME:
case MYSQL_TYPE_YEAR:
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_INT24:
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_LONGLONG:
case MYSQL_TYPE_DECIMAL:
case MYSQL_TYPE_NEWDECIMAL:
case MYSQL_TYPE_ENUM:
case MYSQL_TYPE_SET:
case MYSQL_TYPE_DOUBLE:
case MYSQL_TYPE_FLOAT:
break;
case MYSQL_TYPE_BIT:
case MYSQL_TYPE_GEOMETRY:
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_LONG_BLOB:
case MYSQL_TYPE_VARCHAR:
case MYSQL_TYPE_VAR_STRING:
case MYSQL_TYPE_STRING:
if (field->data.s) g_free(field->data.s);
break;
default:
g_message("%s: unknown field_type '%s' (%d) to free()",
G_STRLOC,
network_mysqld_proto_field_get_typestring(field->fielddef->type),
field->fielddef->type);
break;
}
g_free(field);
}
int network_mysqld_proto_field_get(network_packet *packet,
network_mysqld_proto_field *field) {
guint64 length;
guint8 i8;
guint16 i16;
guint32 i32;
guint64 i64;
int err = 0;
gchar *s;
switch ((guchar)field->fielddef->type) {
case MYSQL_TYPE_BIT:
err = err || network_mysqld_proto_get_string_len(packet, &field->data.s, field->fielddef->max_length);
break;
case MYSQL_TYPE_FLOAT: /* float4store */
s = NULL;
err = err || network_mysqld_proto_get_string_len(packet, &s, 4);
if (!err) {
union {
float d;
guchar s[4];
} shadow;
guint i;
memcpy(shadow.s, s, 4);
#if 0
/* on BIG-ENDIAN we may have to swap the bytes */
for (i = 0; i < 4 / 2; i++) {
guchar tmp;
tmp = shadow.s[i];
shadow.s[i] = shadow.s[3 - i];
shadow.s[3 - i] = tmp;
}
#endif
field->data.d = shadow.d;
}
g_free(s);
break;
case MYSQL_TYPE_DOUBLE: /* float8store */
s = NULL;
err = err || network_mysqld_proto_get_string_len(packet, &s, 8);
if (!err) {
union {
double d;
guchar s[8];
} shadow;
guint i;
memcpy(shadow.s, s, 8);
#if 0
/* on BIG-ENDIAN we may have to swap the bytes */
for (i = 0; i < 8 / 2; i++) {
guchar tmp;
tmp = shadow.s[i];
shadow.s[i] = shadow.s[7 - i];
shadow.s[7 - i] = tmp;
}
#endif
field->data.d = shadow.d;
}
g_free(s);
break;
case MYSQL_TYPE_TIMESTAMP: /* int4store */
case MYSQL_TYPE_LONG:
err = err || network_mysqld_proto_get_int32(packet, &i32);
if (!err) field->data.i = i32;
break;
case MYSQL_TYPE_DATETIME: /* int8store */
case MYSQL_TYPE_LONGLONG:
err = err || network_mysqld_proto_get_int64(packet, &i64);
if (!err) field->data.i = i64;
break;
case MYSQL_TYPE_INT24:
case MYSQL_TYPE_DATE: /* int3store, a newdate, old-data is 4 byte */
case MYSQL_TYPE_TIME: /* int3store */
err = err || network_mysqld_proto_get_int24(packet, &i32);
if (!err) field->data.i = i32;
break;
case MYSQL_TYPE_SHORT:
err = err || network_mysqld_proto_get_int16(packet, &i16);
if (!err) field->data.i = i16;
break;
case MYSQL_TYPE_YEAR:
case MYSQL_TYPE_TINY:
err = err || network_mysqld_proto_get_int8(packet, &i8);
if (!err) field->data.i = i8;
break;
case MYSQL_TYPE_SET:
case MYSQL_TYPE_ENUM:
switch (field->fielddef->max_length) {
case 1:
err = err || network_mysqld_proto_get_int8(packet, &i8);
if (!err) field->data.i = i8;
break;
case 2:
err = err || network_mysqld_proto_get_int16(packet, &i16);
if (!err) field->data.i = i16;
break;
default:
g_error("%s: enum-length = %lu",
G_STRLOC,
field->fielddef->max_length);
break;
}
break;
case MYSQL_TYPE_GEOMETRY:
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_LONG_BLOB:
switch (field->fielddef->max_length) {
case 1:
err = err || network_mysqld_proto_get_int8(packet, &i8);
if (!err) length = i8;
break;
case 2:
err = err || network_mysqld_proto_get_int16(packet, &i16);
if (!err) length = i16;
break;
case 3:
err = err || network_mysqld_proto_get_int24(packet, &i32);
if (!err) length = i32;
break;
case 4:
err = err || network_mysqld_proto_get_int32(packet, &i32);
if (!err) length = i32;
break;
default:
/* unknown blob-length */
g_debug_hexdump(G_STRLOC, S(packet->data));
g_error("%s: blob-length = %lu",
G_STRLOC,
field->fielddef->max_length);
break;
}
err = err || network_mysqld_proto_get_string_len(packet, &field->data.s, length);
break;
case MYSQL_TYPE_VARCHAR:
case MYSQL_TYPE_VAR_STRING:
case MYSQL_TYPE_STRING:
if (field->fielddef->max_length < 256) {
err = err || network_mysqld_proto_get_int8(packet, &i8);
err = err || network_mysqld_proto_get_string_len(packet, &field->data.s, i8);
} else {
err = err || network_mysqld_proto_get_int16(packet, &i16);
err = err || network_mysqld_proto_get_string_len(packet, &field->data.s, i16);
}
break;
case MYSQL_TYPE_NEWDECIMAL: {
/* the decimal is binary encoded
*/
guchar digits_per_bytes[] = { 0, 1, 1, 2, 2, 3, 3, 4, 4, 4 }; /* how many bytes are needed to store x decimal digits */
guint i_digits = field->fielddef->max_length - field->fielddef->decimals;
guint f_digits = field->fielddef->decimals;
guint decimal_full_blocks = i_digits / 9; /* 9 decimal digits in 4 bytes */
guint decimal_last_block_digits = i_digits % 9; /* how many digits are left ? */
guint scale_full_blocks = f_digits / 9; /* 9 decimal digits in 4 bytes */
guint scale_last_block_digits = f_digits % 9; /* how many digits are left ? */
guint size = 0;
size += decimal_full_blocks * digits_per_bytes[9] + digits_per_bytes[decimal_last_block_digits];
size += scale_full_blocks * digits_per_bytes[9] + digits_per_bytes[scale_last_block_digits];
#if 0
g_debug_hexdump(G_STRLOC " (NEWDECIMAL)", packet->data->str, packet->data->len);
#endif
#if 0
g_critical("%s: don't know how to decode NEWDECIMAL(%lu, %u) at offset %u (%d)",
G_STRLOC,
field->fielddef->max_length,
field->fielddef->decimals,
packet->offset,
size
);
#endif
err = err || network_mysqld_proto_skip(packet, size);
break; }
default:
g_debug_hexdump(G_STRLOC, packet->data->str, packet->data->len);
g_error("%s: unknown field-type '%d' to fetch from offset = %04x",
G_STRLOC,
field->fielddef->type,
packet->offset);
break;
}
return err ? -1 : 0;
}
/**
* get the field-definitions of columns that are included in this log-event
*/
GPtrArray *network_mysqld_proto_fields_new_full(
GPtrArray *fielddefs,
gchar *used_cols_bits,
guint G_GNUC_UNUSED used_cols_bits_len,
gchar *null_bits,
guint G_GNUC_UNUSED null_bits_len) {
GPtrArray *fields;
guint col;
guint null_bit;
fields = g_ptr_array_new();
for (col = 0, null_bit = 0; col < fielddefs->len; col++) {
MYSQL_FIELD *fielddef = fielddefs->pdata[col];
guint col_byteoffset = col / 8;
guint col_bitoffset = col % 8;
/* check if we have data for this columns in the row-log-event */
if ((used_cols_bits[col_byteoffset] >> col_bitoffset) & 0x1) {
network_mysqld_proto_field *field = network_mysqld_proto_field_new();
guint null_byteoffset = null_bit / 8;
guint null_bitoffset = null_bit % 8;
field->fielddef = fielddef;
field->is_null = (null_bits[null_byteoffset] >> null_bitoffset) & 0x1;
/* the field is defined as NOT NULL, so the null-bit shouldn't be set */
if ((fielddef->flags & NOT_NULL_FLAG) != 0) {
if (field->is_null) {
g_critical("%s: field [%d] is defined as NOT NULL, but nul-bit is set",
G_STRLOC,
col);
return NULL;
}
}
null_bit++;
g_ptr_array_add(fields, field);
}
}
return fields;
}
int network_mysqld_proto_fields_get(network_packet *packet, GPtrArray *fields) {
guint i;
for (i = 0; i < fields->len; i++) {
network_mysqld_proto_field *field = fields->pdata[i];
if (!field->is_null) {
if (network_mysqld_proto_field_get(packet, field)) return -1;
}
}
return 0;
}
void network_mysqld_proto_fields_free(GPtrArray *fields) {
guint i;
if (!fields) return;
for (i = 0; i < fields->len; i++) {
network_mysqld_proto_field_free(fields->pdata[i]);
}
g_ptr_array_free(fields, TRUE);
}
struct {
enum Log_event_type type;
const char *name;
} event_type_name[] = {
#define V(x) x, #x
{ V(UNKNOWN_EVENT) },
{ V(START_EVENT_V3) },
{ V(QUERY_EVENT) },
{ V(STOP_EVENT) },
{ V(ROTATE_EVENT) },
{ V(INTVAR_EVENT) },
{ V(LOAD_EVENT) },
{ V(SLAVE_EVENT) },
{ V(CREATE_FILE_EVENT) },
{ V(APPEND_BLOCK_EVENT) },
{ V(EXEC_LOAD_EVENT) },
{ V(DELETE_FILE_EVENT) },
{ V(NEW_LOAD_EVENT) },
{ V(RAND_EVENT) },
{ V(USER_VAR_EVENT) },
{ V(FORMAT_DESCRIPTION_EVENT) },
{ V(XID_EVENT) },
{ V(BEGIN_LOAD_QUERY_EVENT) },
{ V(EXECUTE_LOAD_QUERY_EVENT) },
{ V(TABLE_MAP_EVENT ) },
{ V(PRE_GA_WRITE_ROWS_EVENT ) },
{ V(PRE_GA_UPDATE_ROWS_EVENT ) },
{ V(PRE_GA_DELETE_ROWS_EVENT ) },
{ V(WRITE_ROWS_EVENT ) },
{ V(UPDATE_ROWS_EVENT ) },
{ V(DELETE_ROWS_EVENT ) },
{ V(INCIDENT_EVENT) },
{ V(HEARTBEAT_LOG_EVENT) },
{ V(IGNORABLE_LOG_EVENT) },
{ V(ROWS_QUERY_LOG_EVENT) },
#undef V
{ 0, NULL }
};
const char *network_mysqld_binlog_get_eventname(enum Log_event_type type) {
static const char *unknown_type = "UNKNOWN";
guint i;
for (i = 0; event_type_name[i].name; i++) {
if ((guchar)event_type_name[i].type == (guchar)type) return event_type_name[i].name;
}
g_critical("%s: event-type %d isn't known yet",
G_STRLOC,
type);
return unknown_type;
}
struct {
enum enum_field_types type;
const char *name;
} field_type_name[] = {
{ MYSQL_TYPE_STRING, "CHAR" },
{ MYSQL_TYPE_VARCHAR, "VARCHAR" },
{ MYSQL_TYPE_VAR_STRING, "VARCHAR /* varstring */" },
{ MYSQL_TYPE_TINY_BLOB, "TINYBLOB" },
{ MYSQL_TYPE_MEDIUM_BLOB, "MEDIUMBLOB" },
{ MYSQL_TYPE_BLOB, "BLOB" },
{ MYSQL_TYPE_LONG_BLOB, "LONGBLOB" },
{ MYSQL_TYPE_TINY, "TINYINT" },
{ MYSQL_TYPE_SHORT, "SMALLINT" },
{ MYSQL_TYPE_INT24, "MEDIUMINT" },
{ MYSQL_TYPE_LONG, "INT" },
{ MYSQL_TYPE_LONGLONG, "BIGINT" },
{ MYSQL_TYPE_NEWDECIMAL, "DECIMAL" },
{ MYSQL_TYPE_ENUM, "ENUM" },
{ MYSQL_TYPE_SET, "SET" },
{ MYSQL_TYPE_TIMESTAMP, "TIMESTAMP" },
{ MYSQL_TYPE_DATE, "DATE" },
{ MYSQL_TYPE_DATETIME, "DATETIME" },
{ MYSQL_TYPE_TIME, "TIME" },
{ MYSQL_TYPE_YEAR, "YEAR" },
{ MYSQL_TYPE_NEWDATE, "DATE /* new */" },
{ MYSQL_TYPE_FLOAT, "FLOAT" },
{ MYSQL_TYPE_DOUBLE, "DOUBLE" },
{ MYSQL_TYPE_DECIMAL, "DECIMAL /* old */" },
{ MYSQL_TYPE_NULL, "NULL" },
{ MYSQL_TYPE_BIT, "BIT" },
{ MYSQL_TYPE_GEOMETRY, "GEOMETRY" },
{ 0, NULL }
};
const char *network_mysqld_proto_field_get_typestring(enum enum_field_types type) {
static const char *unknown_type = "UNKNOWN";
guint i;
for (i = 0; field_type_name[i].name; i++) {
if ((guchar)field_type_name[i].type == (guchar)type) return field_type_name[i].name;
}
g_critical("%s: field-type %d isn't known yet",
G_STRLOC,
type);
return unknown_type;
}
void network_mysqld_table_print(network_mysqld_table *tbl) {
GString *out = g_string_new(NULL);
guint i;
g_string_append_printf(out, "CREATE TABLE %s.%s (\n",
tbl->db_name->str,
tbl->table_name->str);
for (i = 0; i < tbl->fields->len; i++) {
MYSQL_FIELD *field = tbl->fields->pdata[i];
if (i > 0) {
g_string_append(out, ",\n");
}
switch ((guchar)field->type) {
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_INT24:
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_LONGLONG:
case MYSQL_TYPE_DATE:
case MYSQL_TYPE_DATETIME:
case MYSQL_TYPE_TIME:
case MYSQL_TYPE_TIMESTAMP:
case MYSQL_TYPE_YEAR:
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_LONG_BLOB:
g_string_append_printf(out, " field_%d %s %s NULL",
i,
network_mysqld_proto_field_get_typestring(field->type),
field->flags & NOT_NULL_FLAG ? "NOT" : "DEFAULT"
);
break;
case MYSQL_TYPE_FLOAT:
case MYSQL_TYPE_DOUBLE:
case MYSQL_TYPE_DECIMAL:
case MYSQL_TYPE_NEWDECIMAL:
g_string_append_printf(out, " field_%d %s(%lu, %u) %s NULL",
i,
network_mysqld_proto_field_get_typestring(field->type),
field->max_length, field->decimals,
field->flags & NOT_NULL_FLAG ? "NOT" : "DEFAULT"
);
break;
default:
g_string_append_printf(out, " field_%d %s(%lu) %s NULL",
i,
network_mysqld_proto_field_get_typestring(field->type),
field->max_length,
field->flags & NOT_NULL_FLAG ? "NOT" : "DEFAULT"
);
break;
}
}
g_string_append(out, "\n)");
g_print("-- %s:\n%s\n\n",
G_STRLOC, out->str);
g_string_free(out, TRUE);
}
static int network_mysqld_proto_field_append_to_string(GString *out, network_mysqld_proto_field *field) {
switch((guchar)field->fielddef->type) {
case MYSQL_TYPE_DATE:
case MYSQL_TYPE_TIMESTAMP:
case MYSQL_TYPE_DATETIME:
case MYSQL_TYPE_TIME:
case MYSQL_TYPE_YEAR:
case MYSQL_TYPE_TINY:
case MYSQL_TYPE_SHORT:
case MYSQL_TYPE_INT24:
case MYSQL_TYPE_LONG:
case MYSQL_TYPE_LONGLONG:
case MYSQL_TYPE_ENUM:
case MYSQL_TYPE_SET:
g_string_append_printf(out, "%"G_GUINT64_FORMAT, field->data.i);
break;
case MYSQL_TYPE_VARCHAR:
case MYSQL_TYPE_VAR_STRING:
case MYSQL_TYPE_STRING:
g_string_append_printf(out, "'%s'", field->data.s ? field->data.s : "");
break;
case MYSQL_TYPE_FLOAT:
case MYSQL_TYPE_DOUBLE:
g_string_append_printf(out, "%f", field->data.d);
break;
case MYSQL_TYPE_GEOMETRY:
g_string_append_printf(out, "'...(geometry)'");
break;
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_LONG_BLOB:
g_string_append_printf(out, "'...(blob)'");
break;
case MYSQL_TYPE_BIT:
g_string_append_printf(out, "'...(bit)'");
break;
case MYSQL_TYPE_NEWDECIMAL:
g_string_append_printf(out, "'...(decimal)'");
break;
default:
g_error("%s: field-type '%s' (%d) isn't known",
G_STRLOC,
network_mysqld_proto_field_get_typestring(field->fielddef->type),
field->fielddef->type);
break;
}
return 0;
}
/**
* decode a binlog event
*/
int network_mysqld_binlog_event_print(network_mysqld_binlog *binlog,
network_mysqld_binlog_event *event) {
guint i, field_ndx;
network_mysqld_table *tbl;
int err = 0;
#if 0
g_message("%s: timestamp = %u, type = %u, server-id = %u, size = %u, pos = %u, flags = %04x",
G_STRLOC,
event->timestamp,
event->event_type,
event->server_id,
event->event_size,
event->log_pos,
event->flags);
#endif
switch (event->event_type) {
case QUERY_EVENT: /* 2 */
#if 0
g_message("%s: QUERY: thread_id = %d, exec_time = %d, error-code = %d\ndb = %s, query = %s",
G_STRLOC,
event->event.query_event.thread_id,
event->event.query_event.exec_time,
event->event.query_event.error_code,
event->event.query_event.db_name ? event->event.query_event.db_name : "(null)",
event->event.query_event.query ? event->event.query_event.query : "(null)"
);
#else
g_print("-- %s: db = %s\n%s\n\n",
G_STRLOC,
event->event.query_event.db_name ? event->event.query_event.db_name : "(null)",
event->event.query_event.query ? event->event.query_event.query : "(null)"
);
#endif
break;
case STOP_EVENT:
break;
case TABLE_MAP_EVENT:
tbl = network_mysqld_table_new();
network_mysqld_binlog_event_tablemap_get(event, tbl);
g_hash_table_insert(binlog->rbr_tables, guint64_new(tbl->table_id), tbl);
network_mysqld_table_print(tbl);
break;
case FORMAT_DESCRIPTION_EVENT: /* 15 */
g_print("-- format-description:\n");
g_print("-- file-version: %d\n", event->event.format_event.binlog_version);
g_print("-- writer-version: %s\n", event->event.format_event.master_version);
g_print("-- created: %d\n", event->event.format_event.created_ts);
g_print("-- no. of known events: %"G_GSIZE_FORMAT"\n", event->event.format_event.perm_events_len);
break;
case INTVAR_EVENT: /* 5 */
break;
case XID_EVENT: /* 16 */
g_print("COMMIT /* xid = %"G_GUINT64_FORMAT" */\n", event->event.xid.xid_id);
break;
case ROTATE_EVENT: /* 4 */
g_print("-- rotating to %s, pos %u\n", event->event.rotate_event.binlog_file, event->event.rotate_event.binlog_pos);
break;
case WRITE_ROWS_EVENT:
case UPDATE_ROWS_EVENT:
case DELETE_ROWS_EVENT: {
network_packet row_packet;
GString row;
tbl = g_hash_table_lookup(binlog->rbr_tables, &(event->event.row_event.table_id));
if (!tbl) {
g_critical("%s: table-id: %"G_GUINT64_FORMAT" isn't known, needed for a %d event",
G_STRLOC,
event->event.row_event.table_id,
event->event_type
);
break;
}
row.str = event->event.row_event.row;
row.len = event->event.row_event.row_len;
row_packet.data = &row;
row_packet.offset = 0;
#if 0
g_debug_hexdump(G_STRLOC " (used colums)", event->event.row_event.used_columns, event->event.row_event.used_columns_len);
#endif
do {
GPtrArray *pre_fields, *post_fields = NULL;
GString *out = g_string_new(NULL);
gchar *post_bits = NULL, *pre_bits;
err = err || network_mysqld_proto_get_string_len(
&row_packet,
&pre_bits,
event->event.row_event.null_bits_before_len);
if (err) break;
pre_fields = network_mysqld_proto_fields_new_full(tbl->fields,
event->event.row_event.used_columns_before,
event->event.row_event.used_columns_before_len,
pre_bits,
event->event.row_event.null_bits_before_len);
if (NULL == pre_fields) {
err = 1;
break;
}
if (network_mysqld_proto_fields_get(&row_packet, pre_fields)) {
break;
}
if (event->event_type == UPDATE_ROWS_EVENT) {
err = err || network_mysqld_proto_get_string_len(
&row_packet,
&post_bits,
event->event.row_event.null_bits_after_len);
if (err) break;
post_fields = network_mysqld_proto_fields_new_full(tbl->fields,
event->event.row_event.used_columns_after,
event->event.row_event.used_columns_after_len,
post_bits,
event->event.row_event.null_bits_after_len);
if (NULL == post_fields) {
err = 1;
break;
}
if (network_mysqld_proto_fields_get(&row_packet, post_fields)) {
break;
}
}
/* call lua */
switch (event->event_type) {
case UPDATE_ROWS_EVENT:
g_string_append_printf(out, "UPDATE %s.%s\n SET ",
tbl->db_name->str,
tbl->table_name->str);
for (i = 0, field_ndx = 0; i < tbl->fields->len; i++) {
guint col_byteoffset = i / 8;
guint col_bitoffset = i % 8;
if ((event->event.row_event.used_columns_after[col_byteoffset] >> col_bitoffset) & 0x1) {
network_mysqld_proto_field *field = post_fields->pdata[field_ndx++];
if (field_ndx > 1) {
g_string_append_printf(out, ", ");
}
g_string_append_printf(out, "field_%d ", i);
if (field->is_null) {
g_string_append(out, "= NULL");
} else {
g_string_append(out, "= ");
network_mysqld_proto_field_append_to_string(out, field);
}
}
}
g_string_append_printf(out, "\n WHERE ");
for (i = 0, field_ndx = 0; i < tbl->fields->len; i++) {
guint col_byteoffset = i / 8;
guint col_bitoffset = i % 8;
if ((event->event.row_event.used_columns_before[col_byteoffset] >> col_bitoffset) & 0x1) {
network_mysqld_proto_field *field = pre_fields->pdata[field_ndx++];
if (field_ndx > 1) {
g_string_append_printf(out, " AND ");
}
g_string_append_printf(out, "field_%d ", i);
if (field->is_null) {
g_string_append(out, "IS NULL");
} else {
g_string_append(out, "= ");
network_mysqld_proto_field_append_to_string(out, field);
}
}
}
break;
case WRITE_ROWS_EVENT:
g_string_append_printf(out, "INSERT INTO %s.%s ",
tbl->db_name->str,
tbl->table_name->str);
/* ... get the column-index right */
g_string_append(out, "(");
for (i = 0; i < tbl->fields->len; i++) {
guint col_byteoffset = i / 8;
guint col_bitoffset = i % 8;
if ((event->event.row_event.used_columns_before[col_byteoffset] >> col_bitoffset) & 0x1) {
if (out->str[out->len - 1] != '(') g_string_append(out, ", ");
g_string_append_printf(out, "field_%d", i);
}
}
g_string_append(out, ")");
g_string_append(out, " VALUES\n (");
for (i = 0; i < pre_fields->len; i++) {
network_mysqld_proto_field *field = pre_fields->pdata[i];
if (i > 0) {
g_string_append_printf(out, ", ");
}
if (field->is_null) {
g_string_append(out, "NULL");
} else {
network_mysqld_proto_field_append_to_string(out, field);
}
}
g_string_append_printf(out, ")");
break;
case DELETE_ROWS_EVENT:
g_string_append_printf(out, "DELETE FROM %s.%s\n WHERE ",
tbl->db_name->str,
tbl->table_name->str);
for (i = 0, field_ndx = 0; i < tbl->fields->len; i++) {
guint col_byteoffset = i / 8;
guint col_bitoffset = i % 8;
if ((event->event.row_event.used_columns_before[col_byteoffset] >> col_bitoffset) & 0x1) {
network_mysqld_proto_field *field = pre_fields->pdata[field_ndx++];
if (field_ndx > 1) {
g_string_append_printf(out, " AND ");
}
g_string_append_printf(out, "field_%d ", i);
if (field->is_null) {
g_string_append(out, "IS NULL");
} else {
g_string_append(out, "= ");
network_mysqld_proto_field_append_to_string(out, field);
}
}
}
break;
default:
break;
}
g_print("%s\n\n", out->str);
g_string_free(out, TRUE);
if (pre_fields) network_mysqld_proto_fields_free(pre_fields);
if (post_fields) network_mysqld_proto_fields_free(post_fields);
if (pre_bits) g_free(pre_bits);
if (post_bits) g_free(post_bits);
} while (row_packet.data->len > row_packet.offset);
if (0 == err) {
if (row_packet.offset != row_packet.data->len) {
g_debug("%s: event_type %d: offset = %d, length = %"G_GSIZE_FORMAT,
G_STRLOC,
event->event_type,
row_packet.offset,
row_packet.data->len);
}
}
break; }
case ROWS_QUERY_LOG_EVENT:
g_print("-- next RBR query: %s\n", event->event.rows_query.query);
break;
default:
g_message("%s: unknown event-type: %d",
G_STRLOC,
event->event_type);
return -1;
}
return err ? -1 : 0;
}
/**
* read a binlog file
*/
int replicate_binlog_dump_file(
const char *filename,
gint startpos,
gboolean find_startpos,
gint stoppos
) {
int fd;
char binlog_header[4];
network_packet *packet;
network_mysqld_binlog *binlog;
network_mysqld_binlog_event *event;
off_t binlog_pos;
int round = 0;
int ret = 0;
if (-1 == (fd = g_open(filename, O_RDONLY, 0))) {
g_critical("%s: opening '%s' failed: %s",
G_STRLOC,
filename,
g_strerror(errno));
return -1;
}
if (4 != read(fd, binlog_header, 4)) {
g_return_val_if_reached(-1);
}
if (binlog_header[0] != '\xfe' ||
binlog_header[1] != 'b' ||
binlog_header[2] != 'i' ||
binlog_header[3] != 'n') {
g_critical("%s: binlog-header should be: %02x%02x%02x%02x, got %02x%02x%02x%02x",
G_STRLOC,
'\xfe', 'b', 'i', 'n',
binlog_header[0],
binlog_header[1],
binlog_header[2],
binlog_header[3]
);
g_return_val_if_reached(-1);
}
packet = network_packet_new();
packet->data = g_string_new(NULL);
g_string_set_size(packet->data, 19 + 1);
binlog = network_mysqld_binlog_new();
binlog_pos = 4;
if (startpos) {
if (-1 == lseek(fd, startpos, SEEK_SET)) {
g_critical("%s: lseek(%d) failed: %s",
G_STRLOC,
startpos,
g_strerror(errno)
);
g_return_val_if_reached(-1);
}
binlog_pos = startpos;
}
if (find_startpos) {
/* check if the current binlog-pos is valid,
*
* if not, just skip a byte a retry until we found a valid header
* */
while (19 == (packet->data->len = read(fd, packet->data->str, 19))) {
packet->data->str[packet->data->len] = '\0'; /* term the string */
packet->offset = 0;
g_assert_cmpint(packet->data->len, ==, 19);
event = network_mysqld_binlog_event_new();
network_mysqld_proto_get_binlog_event_header(packet, event);
if (event->event_size < 19 ||
binlog_pos + event->event_size != event->log_pos) {
if (-1 == lseek(fd, -18, SEEK_CUR)) {
g_critical("%s: lseek(%d) failed: %s",
G_STRLOC,
-18,
g_strerror(errno)
);
g_return_val_if_reached(-1);
}
binlog_pos += 1;