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mariadb/sql/log_event_server.cc
Jan Lindström 3d11313b6f MDEV-36134 : Mariadb server crashed during insert 
Replication filtering is not safe for cluster consistency.
There is problem when two or more filtering rules are
provided by user. Here, we disable replication filtering
inside a Galera cluster for now. To support safe replication
filereing in the Galera cluster it should also effect SST/IST.

Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>
2025-08-14 16:47:16 +02:00

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/*
Copyright (c) 2000, 2019, Oracle and/or its affiliates.
Copyright (c) 2009, 2022, MariaDB
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 02110-1335 USA */
#include "mariadb.h"
#include "sql_priv.h"
#ifdef MYSQL_CLIENT
#error MYSQL_CLIENT must not be defined here
#endif
#ifndef MYSQL_SERVER
#error MYSQL_SERVER must be defined here
#endif
#include "unireg.h"
#include "log_event.h"
#include "sql_base.h" // close_thread_tables
#include "sql_cache.h" // QUERY_CACHE_FLAGS_SIZE
#include "sql_locale.h" // MY_LOCALE, my_locale_by_number, my_locale_en_US
#include "key.h" // key_copy
#include "lock.h" // mysql_unlock_tables
#include "sql_parse.h" // mysql_test_parse_for_slave
#include "tztime.h" // struct Time_zone
#include "sql_load.h" // mysql_load
#include "sql_db.h" // load_db_opt_by_name
#include "slave.h"
#include "rpl_rli.h"
#include "rpl_mi.h"
#include "rpl_filter.h"
#include "rpl_record.h"
#include "transaction.h"
#include <my_dir.h>
#include "sql_show.h" // append_identifier
#include "debug_sync.h" // debug_sync
#include <mysql/psi/mysql_statement.h>
#include <strfunc.h>
#include "compat56.h"
#include "wsrep_mysqld.h"
#include "sql_insert.h"
#include <my_bitmap.h>
#include "rpl_utility.h"
#include "rpl_constants.h"
#include "sql_digest.h"
#include "zlib.h"
#define log_cs &my_charset_latin1
#if defined(HAVE_REPLICATION)
static int rows_event_stmt_cleanup(rpl_group_info *rgi, THD* thd);
static const char *HA_ERR(int i)
{
/*
This function should only be called in case of an error
was detected
*/
DBUG_ASSERT(i != 0);
switch (i) {
case HA_ERR_KEY_NOT_FOUND: return "HA_ERR_KEY_NOT_FOUND";
case HA_ERR_FOUND_DUPP_KEY: return "HA_ERR_FOUND_DUPP_KEY";
case HA_ERR_RECORD_CHANGED: return "HA_ERR_RECORD_CHANGED";
case HA_ERR_WRONG_INDEX: return "HA_ERR_WRONG_INDEX";
case HA_ERR_CRASHED: return "HA_ERR_CRASHED";
case HA_ERR_WRONG_IN_RECORD: return "HA_ERR_WRONG_IN_RECORD";
case HA_ERR_OUT_OF_MEM: return "HA_ERR_OUT_OF_MEM";
case HA_ERR_NOT_A_TABLE: return "HA_ERR_NOT_A_TABLE";
case HA_ERR_WRONG_COMMAND: return "HA_ERR_WRONG_COMMAND";
case HA_ERR_OLD_FILE: return "HA_ERR_OLD_FILE";
case HA_ERR_NO_ACTIVE_RECORD: return "HA_ERR_NO_ACTIVE_RECORD";
case HA_ERR_RECORD_DELETED: return "HA_ERR_RECORD_DELETED";
case HA_ERR_RECORD_FILE_FULL: return "HA_ERR_RECORD_FILE_FULL";
case HA_ERR_INDEX_FILE_FULL: return "HA_ERR_INDEX_FILE_FULL";
case HA_ERR_END_OF_FILE: return "HA_ERR_END_OF_FILE";
case HA_ERR_UNSUPPORTED: return "HA_ERR_UNSUPPORTED";
case HA_ERR_TO_BIG_ROW: return "HA_ERR_TO_BIG_ROW";
case HA_WRONG_CREATE_OPTION: return "HA_WRONG_CREATE_OPTION";
case HA_ERR_FOUND_DUPP_UNIQUE: return "HA_ERR_FOUND_DUPP_UNIQUE";
case HA_ERR_UNKNOWN_CHARSET: return "HA_ERR_UNKNOWN_CHARSET";
case HA_ERR_WRONG_MRG_TABLE_DEF: return "HA_ERR_WRONG_MRG_TABLE_DEF";
case HA_ERR_CRASHED_ON_REPAIR: return "HA_ERR_CRASHED_ON_REPAIR";
case HA_ERR_CRASHED_ON_USAGE: return "HA_ERR_CRASHED_ON_USAGE";
case HA_ERR_LOCK_WAIT_TIMEOUT: return "HA_ERR_LOCK_WAIT_TIMEOUT";
case HA_ERR_LOCK_TABLE_FULL: return "HA_ERR_LOCK_TABLE_FULL";
case HA_ERR_READ_ONLY_TRANSACTION: return "HA_ERR_READ_ONLY_TRANSACTION";
case HA_ERR_LOCK_DEADLOCK: return "HA_ERR_LOCK_DEADLOCK";
case HA_ERR_CANNOT_ADD_FOREIGN: return "HA_ERR_CANNOT_ADD_FOREIGN";
case HA_ERR_NO_REFERENCED_ROW: return "HA_ERR_NO_REFERENCED_ROW";
case HA_ERR_ROW_IS_REFERENCED: return "HA_ERR_ROW_IS_REFERENCED";
case HA_ERR_NO_SAVEPOINT: return "HA_ERR_NO_SAVEPOINT";
case HA_ERR_NON_UNIQUE_BLOCK_SIZE: return "HA_ERR_NON_UNIQUE_BLOCK_SIZE";
case HA_ERR_NO_SUCH_TABLE: return "HA_ERR_NO_SUCH_TABLE";
case HA_ERR_TABLE_EXIST: return "HA_ERR_TABLE_EXIST";
case HA_ERR_NO_CONNECTION: return "HA_ERR_NO_CONNECTION";
case HA_ERR_NULL_IN_SPATIAL: return "HA_ERR_NULL_IN_SPATIAL";
case HA_ERR_TABLE_DEF_CHANGED: return "HA_ERR_TABLE_DEF_CHANGED";
case HA_ERR_NO_PARTITION_FOUND: return "HA_ERR_NO_PARTITION_FOUND";
case HA_ERR_RBR_LOGGING_FAILED: return "HA_ERR_RBR_LOGGING_FAILED";
case HA_ERR_DROP_INDEX_FK: return "HA_ERR_DROP_INDEX_FK";
case HA_ERR_FOREIGN_DUPLICATE_KEY: return "HA_ERR_FOREIGN_DUPLICATE_KEY";
case HA_ERR_TABLE_NEEDS_UPGRADE: return "HA_ERR_TABLE_NEEDS_UPGRADE";
case HA_ERR_TABLE_READONLY: return "HA_ERR_TABLE_READONLY";
case HA_ERR_AUTOINC_READ_FAILED: return "HA_ERR_AUTOINC_READ_FAILED";
case HA_ERR_AUTOINC_ERANGE: return "HA_ERR_AUTOINC_ERANGE";
case HA_ERR_GENERIC: return "HA_ERR_GENERIC";
case HA_ERR_RECORD_IS_THE_SAME: return "HA_ERR_RECORD_IS_THE_SAME";
case HA_ERR_LOGGING_IMPOSSIBLE: return "HA_ERR_LOGGING_IMPOSSIBLE";
case HA_ERR_CORRUPT_EVENT: return "HA_ERR_CORRUPT_EVENT";
case HA_ERR_ROWS_EVENT_APPLY : return "HA_ERR_ROWS_EVENT_APPLY";
case HA_ERR_PARTITION_LIST : return "HA_ERR_PARTITION_LIST";
}
return "No Error!";
}
/*
Return true if an error caught during event execution is a temporary error
that will cause automatic retry of the event group during parallel
replication, false otherwise.
In parallel replication, conflicting transactions can occasionally cause
deadlocks; such errors are handled automatically by rolling back re-trying
the transactions, so should not pollute the error log.
*/
static bool
is_parallel_retry_error(rpl_group_info *rgi, int err)
{
if (!rgi->is_parallel_exec)
return false;
if (rgi->speculation == rpl_group_info::SPECULATE_OPTIMISTIC)
return true;
if (rgi->killed_for_retry &&
(err == ER_QUERY_INTERRUPTED || err == ER_CONNECTION_KILLED))
return true;
return has_temporary_error(rgi->thd);
}
/**
Accumulate a Diagnostics_area's errors and warnings into an output buffer
@param errbuf The output buffer to write error messages
@param errbuf_size The size of the output buffer
@param da The Diagnostics_area to check for errors
*/
static void inline aggregate_da_errors(char *errbuf, size_t errbuf_size,
Diagnostics_area *da)
{
const char *errbuf_end= errbuf + errbuf_size;
char *slider;
Diagnostics_area::Sql_condition_iterator it= da->sql_conditions();
const Sql_condition *err;
size_t len;
for (err= it++, slider= errbuf; err && slider < errbuf_end - 1;
slider += len, err= it++)
{
len= my_snprintf(slider, errbuf_end - slider,
" %s, Error_code: %d;", err->get_message_text(),
err->get_sql_errno());
}
}
/**
Error reporting facility for Rows_log_event::do_apply_event
@param level error, warning or info
@param ha_error HA_ERR_ code
@param rli pointer to the active Relay_log_info instance
@param thd pointer to the slave thread's thd
@param table pointer to the event's table object
@param type the type of the event
@param log_name the master binlog file name
@param pos the master binlog file pos (the next after the event)
*/
static void inline slave_rows_error_report(enum loglevel level, int ha_error,
rpl_group_info *rgi, THD *thd,
TABLE *table, const char * type,
const char *log_name, my_off_t pos)
{
const char *handler_error= (ha_error ? HA_ERR(ha_error) : NULL);
char buff[MAX_SLAVE_ERRMSG];
Relay_log_info const *rli= rgi->rli;
buff[0]= 0;
int errcode= thd->is_error() ? thd->get_stmt_da()->sql_errno() : 0;
/*
In parallel replication, deadlocks or other temporary errors can happen
occasionally in normal operation, they will be handled correctly and
automatically by re-trying the transactions. So do not pollute the error
log with messages about them.
*/
if (is_parallel_retry_error(rgi, errcode))
return;
aggregate_da_errors(buff, sizeof(buff), thd->get_stmt_da());
if (ha_error != 0)
rli->report(level, errcode, rgi->gtid_info(),
"Could not execute %s event on table %s.%s;"
"%s handler error %s; "
"the event's master log %s, end_log_pos %llu",
type, table->s->db.str, table->s->table_name.str,
buff, handler_error == NULL ? "<unknown>" : handler_error,
log_name, pos);
else
rli->report(level, errcode, rgi->gtid_info(),
"Could not execute %s event on table %s.%s;"
"%s the event's master log %s, end_log_pos %llu",
type, table->s->db.str, table->s->table_name.str,
buff, log_name, pos);
}
#endif
#if defined(HAVE_REPLICATION)
static void set_thd_db(THD *thd, Rpl_filter *rpl_filter,
const char *db, uint32 db_len)
{
char lcase_db_buf[NAME_LEN +1];
LEX_CSTRING new_db;
new_db.length= db_len;
if (lower_case_table_names == 1)
{
strmov(lcase_db_buf, db);
my_casedn_str(system_charset_info, lcase_db_buf);
new_db.str= lcase_db_buf;
}
else
new_db.str= db;
/* TODO WARNING this makes rewrite_db respect lower_case_table_names values
* for more info look MDEV-17446 */
new_db.str= rpl_filter->get_rewrite_db(new_db.str, &new_db.length);
thd->set_db(&new_db);
}
#endif
#if defined(HAVE_REPLICATION)
inline int idempotent_error_code(int err_code)
{
int ret= 0;
switch (err_code)
{
case 0:
ret= 1;
break;
/*
The following list of "idempotent" errors
means that an error from the list might happen
because of idempotent (more than once)
applying of a binlog file.
Notice, that binlog has a ddl operation its
second applying may cause
case HA_ERR_TABLE_DEF_CHANGED:
case HA_ERR_CANNOT_ADD_FOREIGN:
which are not included into to the list.
Note that HA_ERR_RECORD_DELETED is not in the list since
do_exec_row() should not return that error code.
*/
case HA_ERR_RECORD_CHANGED:
case HA_ERR_KEY_NOT_FOUND:
case HA_ERR_END_OF_FILE:
case HA_ERR_FOUND_DUPP_KEY:
case HA_ERR_FOUND_DUPP_UNIQUE:
case HA_ERR_FOREIGN_DUPLICATE_KEY:
case HA_ERR_NO_REFERENCED_ROW:
case HA_ERR_ROW_IS_REFERENCED:
ret= 1;
break;
default:
ret= 0;
break;
}
return (ret);
}
/**
Ignore error code specified on command line.
*/
inline int ignored_error_code(int err_code)
{
if (use_slave_mask && bitmap_is_set(&slave_error_mask, err_code))
{
statistic_increment(slave_skipped_errors, LOCK_status);
return 1;
}
return err_code == ER_SLAVE_IGNORED_TABLE;
}
/*
This function converts an engine's error to a server error.
If the thread does not have an error already reported, it tries to
define it by calling the engine's method print_error. However, if a
mapping is not found, it uses the ER_UNKNOWN_ERROR and prints out a
warning message.
*/
int convert_handler_error(int error, THD* thd, TABLE *table)
{
uint actual_error= (thd->is_error() ? thd->get_stmt_da()->sql_errno() :
0);
if (actual_error == 0)
{
table->file->print_error(error, MYF(0));
actual_error= (thd->is_error() ? thd->get_stmt_da()->sql_errno() :
ER_UNKNOWN_ERROR);
if (actual_error == ER_UNKNOWN_ERROR)
if (global_system_variables.log_warnings)
sql_print_warning("Unknown error detected %d in handler", error);
}
return (actual_error);
}
inline bool concurrency_error_code(int error)
{
switch (error)
{
case ER_LOCK_WAIT_TIMEOUT:
case ER_LOCK_DEADLOCK:
case ER_XA_RBDEADLOCK:
return TRUE;
default:
return (FALSE);
}
}
inline bool unexpected_error_code(int unexpected_error)
{
switch (unexpected_error)
{
case ER_NET_READ_ERROR:
case ER_NET_ERROR_ON_WRITE:
case ER_QUERY_INTERRUPTED:
case ER_STATEMENT_TIMEOUT:
case ER_CONNECTION_KILLED:
case ER_SERVER_SHUTDOWN:
case ER_NEW_ABORTING_CONNECTION:
return(TRUE);
default:
return(FALSE);
}
}
/*
pretty_print_str()
*/
static void
pretty_print_str(String *packet, const char *str, int len)
{
const char *end= str + len;
packet->append(STRING_WITH_LEN("'"));
while (str < end)
{
char c;
switch ((c=*str++)) {
case '\n': packet->append(STRING_WITH_LEN("\\n")); break;
case '\r': packet->append(STRING_WITH_LEN("\\r")); break;
case '\\': packet->append(STRING_WITH_LEN("\\\\")); break;
case '\b': packet->append(STRING_WITH_LEN("\\b")); break;
case '\t': packet->append(STRING_WITH_LEN("\\t")); break;
case '\'': packet->append(STRING_WITH_LEN("\\'")); break;
case 0 : packet->append(STRING_WITH_LEN("\\0")); break;
default:
packet->append(&c, 1);
break;
}
}
packet->append(STRING_WITH_LEN("'"));
}
#endif /* HAVE_REPLICATION */
#if defined(HAVE_REPLICATION)
/**
Create a prefix for the temporary files that is to be used for
load data file name for this master
@param name Store prefix of name here
@param connection_name Connection name
@return pointer to end of name
@description
We assume that FN_REFLEN is big enough to hold
MAX_CONNECTION_NAME * MAX_FILENAME_MBWIDTH characters + 2 numbers +
a short extension.
The resulting file name has the following parts, each separated with a '-'
- PREFIX_SQL_LOAD (SQL_LOAD-)
- If a connection name is given (multi-master setup):
- Add an extra '-' to mark that this is a multi-master file
- connection name in lower case, converted to safe file characters.
(see create_logfile_name_with_suffix()).
- server_id
- A last '-' (after server_id).
*/
static char *load_data_tmp_prefix(char *name,
LEX_CSTRING *connection_name)
{
name= strmov(name, PREFIX_SQL_LOAD);
if (connection_name->length)
{
uint buf_length;
uint errors;
/* Add marker that this is a multi-master-file */
*name++='-';
/* Convert connection_name to a safe filename */
buf_length= strconvert(system_charset_info, connection_name->str, FN_REFLEN,
&my_charset_filename, name, FN_REFLEN, &errors);
name+= buf_length;
*name++= '-';
}
name= int10_to_str(global_system_variables.server_id, name, 10);
*name++ = '-';
*name= '\0'; // For testing prefixes
return name;
}
/**
Creates a temporary name for LOAD DATA INFILE
@param buf Store new filename here
@param file_id File_id (part of file name)
@param event_server_id Event_id (part of file name)
@param ext Extension for file name
@return
Pointer to start of extension
*/
static char *slave_load_file_stem(char *buf, uint file_id,
int event_server_id, const char *ext,
LEX_CSTRING *connection_name)
{
char *res;
res= buf+ unpack_dirname(buf, slave_load_tmpdir);
to_unix_path(buf);
buf= load_data_tmp_prefix(res, connection_name);
buf= int10_to_str(event_server_id, buf, 10);
*buf++ = '-';
res= int10_to_str(file_id, buf, 10);
strmov(res, ext); // Add extension last
return res; // Pointer to extension
}
#endif
#if defined(HAVE_REPLICATION)
/**
Delete all temporary files used for SQL_LOAD.
*/
static void cleanup_load_tmpdir(LEX_CSTRING *connection_name)
{
MY_DIR *dirp;
FILEINFO *file;
uint i;
char dir[FN_REFLEN], fname[FN_REFLEN];
char prefbuf[31 + MAX_CONNECTION_NAME* MAX_FILENAME_MBWIDTH + 1];
DBUG_ENTER("cleanup_load_tmpdir");
unpack_dirname(dir, slave_load_tmpdir);
if (!(dirp=my_dir(dir, MYF(MY_WME))))
return;
/*
When we are deleting temporary files, we should only remove
the files associated with the server id of our server.
We don't use event_server_id here because since we've disabled
direct binlogging of Create_file/Append_file/Exec_load events
we cannot meet Start_log event in the middle of events from one
LOAD DATA.
*/
load_data_tmp_prefix(prefbuf, connection_name);
DBUG_PRINT("enter", ("dir: '%s' prefix: '%s'", dir, prefbuf));
for (i=0 ; i < (uint)dirp->number_of_files; i++)
{
file=dirp->dir_entry+i;
if (is_prefix(file->name, prefbuf))
{
fn_format(fname,file->name,slave_load_tmpdir,"",MY_UNPACK_FILENAME);
mysql_file_delete(key_file_misc, fname, MYF(0));
}
}
my_dirend(dirp);
DBUG_VOID_RETURN;
}
#endif
/**
Append a version of the 'str' string suitable for use in a query to
the 'to' string. To generate a correct escaping, the character set
information in 'csinfo' is used.
*/
int append_query_string(CHARSET_INFO *csinfo, String *to,
const char *str, size_t len, bool no_backslash)
{
char *beg, *ptr;
my_bool overflow;
uint32 const orig_len= to->length();
if (to->reserve(orig_len + len * 2 + 4))
return 1;
beg= (char*) to->ptr() + to->length();
ptr= beg;
if (csinfo->escape_with_backslash_is_dangerous)
ptr= str_to_hex(ptr, str, len);
else
{
*ptr++= '\'';
if (!no_backslash)
{
ptr+= escape_string_for_mysql(csinfo, ptr, 0, str, len, &overflow);
}
else
{
const char *frm_str= str;
for (; frm_str < (str + len); frm_str++)
{
/* Using '' way to represent "'" */
if (*frm_str == '\'')
*ptr++= *frm_str;
*ptr++= *frm_str;
}
}
*ptr++= '\'';
}
to->length((uint32)(orig_len + ptr - beg));
return 0;
}
/**************************************************************************
Log_event methods (= the parent class of all events)
**************************************************************************/
Log_event::Log_event(THD* thd_arg, uint16 flags_arg, bool using_trans)
:log_pos(0), temp_buf(0), exec_time(0), thd(thd_arg),
checksum_alg(BINLOG_CHECKSUM_ALG_UNDEF)
{
server_id= thd->variables.server_id;
when= thd->start_time;
when_sec_part=thd->start_time_sec_part;
if (using_trans)
cache_type= Log_event::EVENT_TRANSACTIONAL_CACHE;
else
cache_type= Log_event::EVENT_STMT_CACHE;
flags= flags_arg |
(thd->variables.option_bits & OPTION_SKIP_REPLICATION ?
LOG_EVENT_SKIP_REPLICATION_F : 0);
}
/**
This minimal constructor is for when you are not even sure that there
is a valid THD. For example in the server when we are shutting down or
flushing logs after receiving a SIGHUP (then we must write a Rotate to
the binlog but we have no THD, so we need this minimal constructor).
*/
Log_event::Log_event()
:temp_buf(0), exec_time(0), flags(0), cache_type(EVENT_INVALID_CACHE),
thd(0), checksum_alg(BINLOG_CHECKSUM_ALG_UNDEF)
{
server_id= global_system_variables.server_id;
/*
We can't call my_time() here as this would cause a call before
my_init() is called
*/
when= 0;
when_sec_part=0;
log_pos= 0;
}
#ifdef HAVE_REPLICATION
int Log_event::do_update_pos(rpl_group_info *rgi)
{
Relay_log_info *rli= rgi->rli;
DBUG_ENTER("Log_event::do_update_pos");
DBUG_ASSERT(!rli->belongs_to_client());
/*
rli is null when (as far as I (Guilhem) know) the caller is
Load_log_event::do_apply_event *and* that one is called from
Execute_load_log_event::do_apply_event. In this case, we don't
do anything here ; Execute_load_log_event::do_apply_event will
call Log_event::do_apply_event again later with the proper rli.
Strictly speaking, if we were sure that rli is null only in the
case discussed above, 'if (rli)' is useless here. But as we are
not 100% sure, keep it for now.
Matz: I don't think we will need this check with this refactoring.
*/
if (rli)
{
/*
In parallel execution, delay position update for the events that are
not part of event groups (format description, rotate, and such) until
the actual event execution reaches that point.
*/
if (!rgi->is_parallel_exec || is_group_event(get_type_code()))
rli->stmt_done(log_pos, thd, rgi);
}
DBUG_RETURN(0); // Cannot fail currently
}
Log_event::enum_skip_reason
Log_event::do_shall_skip(rpl_group_info *rgi)
{
Relay_log_info *rli= rgi->rli;
DBUG_PRINT("info", ("ev->server_id: %lu, ::server_id: %lu,"
" rli->replicate_same_server_id: %d,"
" rli->slave_skip_counter: %llu",
(ulong) server_id,
(ulong) global_system_variables.server_id,
rli->replicate_same_server_id,
rli->slave_skip_counter));
if ((server_id == global_system_variables.server_id &&
!(rli->replicate_same_server_id || (flags & LOG_EVENT_ACCEPT_OWN_F))) ||
(rli->slave_skip_counter == 1 && rli->is_in_group()) ||
(flags & LOG_EVENT_SKIP_REPLICATION_F &&
opt_replicate_events_marked_for_skip != RPL_SKIP_REPLICATE))
return EVENT_SKIP_IGNORE;
if (rli->slave_skip_counter > 0)
return EVENT_SKIP_COUNT;
return EVENT_SKIP_NOT;
}
/*
Log_event::pack_info()
*/
void Log_event::pack_info(Protocol *protocol)
{
protocol->store("", 0, &my_charset_bin);
}
/**
Only called by SHOW BINLOG EVENTS
*/
int Log_event::net_send(Protocol *protocol, const char* log_name, my_off_t pos)
{
const char *p= strrchr(log_name, FN_LIBCHAR);
const char *event_type;
if (p)
log_name = p + 1;
protocol->prepare_for_resend();
protocol->store(log_name, strlen(log_name), &my_charset_bin);
protocol->store((ulonglong) pos);
event_type = get_type_str();
protocol->store(event_type, strlen(event_type), &my_charset_bin);
protocol->store((uint32) server_id);
protocol->store((ulonglong) log_pos);
pack_info(protocol);
return protocol->write();
}
#endif /* HAVE_REPLICATION */
/**
init_show_field_list() prepares the column names and types for the
output of SHOW BINLOG EVENTS; it is used only by SHOW BINLOG
EVENTS.
*/
void Log_event::init_show_field_list(THD *thd, List<Item>* field_list)
{
MEM_ROOT *mem_root= thd->mem_root;
field_list->push_back(new (mem_root)
Item_empty_string(thd, "Log_name", 20),
mem_root);
field_list->push_back(new (mem_root)
Item_return_int(thd, "Pos",
MY_INT64_NUM_DECIMAL_DIGITS,
MYSQL_TYPE_LONGLONG),
mem_root);
field_list->push_back(new (mem_root)
Item_empty_string(thd, "Event_type", 20),
mem_root);
field_list->push_back(new (mem_root)
Item_return_int(thd, "Server_id", 10,
MYSQL_TYPE_LONG),
mem_root);
field_list->push_back(new (mem_root)
Item_return_int(thd, "End_log_pos",
MY_INT64_NUM_DECIMAL_DIGITS,
MYSQL_TYPE_LONGLONG),
mem_root);
field_list->push_back(new (mem_root) Item_empty_string(thd, "Info", 20),
mem_root);
}
/**
A decider of whether to trigger checksum computation or not.
To be invoked in Log_event::write() stack.
The decision is positive
S,M) if it's been marked for checksumming with @c checksum_alg
M) otherwise, if @@global.binlog_checksum is not NONE and the event is
directly written to the binlog file.
The to-be-cached event decides at @c write_cache() time.
Otherwise the decision is negative.
@note A side effect of the method is altering Log_event::checksum_alg
it the latter was undefined at calling.
@return true Checksum should be used. Log_event::checksum_alg is set.
@return false No checksum
*/
my_bool Log_event::need_checksum()
{
my_bool ret;
DBUG_ENTER("Log_event::need_checksum");
/*
few callers of Log_event::write
(incl FD::write, FD constructing code on the slave side, Rotate relay log
and Stop event)
provides their checksum alg preference through Log_event::checksum_alg.
*/
if (checksum_alg != BINLOG_CHECKSUM_ALG_UNDEF)
ret= checksum_alg != BINLOG_CHECKSUM_ALG_OFF;
else
{
ret= binlog_checksum_options && cache_type == Log_event::EVENT_NO_CACHE;
checksum_alg= ret ? (enum_binlog_checksum_alg)binlog_checksum_options
: BINLOG_CHECKSUM_ALG_OFF;
}
/*
FD calls the methods before data_written has been calculated.
The following invariant claims if the current is not the first
call (and therefore data_written is not zero) then `ret' must be
TRUE. It may not be null because FD is always checksummed.
*/
DBUG_ASSERT(get_type_code() != FORMAT_DESCRIPTION_EVENT || ret ||
data_written == 0);
DBUG_ASSERT(!ret ||
((checksum_alg == binlog_checksum_options ||
/*
Stop event closes the relay-log and its checksum alg
preference is set by the caller can be different
from the server's binlog_checksum_options.
*/
get_type_code() == STOP_EVENT ||
/*
Rotate:s can be checksummed regardless of the server's
binlog_checksum_options. That applies to both
the local RL's Rotate and the master's Rotate
which IO thread instantiates via queue_binlog_ver_3_event.
*/
get_type_code() == ROTATE_EVENT ||
get_type_code() == START_ENCRYPTION_EVENT ||
/* FD is always checksummed */
get_type_code() == FORMAT_DESCRIPTION_EVENT) &&
checksum_alg != BINLOG_CHECKSUM_ALG_OFF));
DBUG_ASSERT(checksum_alg != BINLOG_CHECKSUM_ALG_UNDEF);
DBUG_ASSERT(((get_type_code() != ROTATE_EVENT &&
get_type_code() != STOP_EVENT) ||
get_type_code() != FORMAT_DESCRIPTION_EVENT) ||
cache_type == Log_event::EVENT_NO_CACHE);
DBUG_RETURN(ret);
}
int Log_event_writer::write_internal(const uchar *pos, size_t len)
{
DBUG_ASSERT(!ctx || encrypt_or_write == &Log_event_writer::encrypt_and_write);
if (my_b_safe_write(file, pos, len))
{
DBUG_PRINT("error", ("write to log failed: %d", my_errno));
return 1;
}
bytes_written+= len;
return 0;
}
/*
as soon as encryption produces the first output block, write event_len
where it should be in a valid event header
*/
int Log_event_writer::maybe_write_event_len(uchar *pos, size_t len)
{
if (len && event_len)
{
DBUG_ASSERT(len >= EVENT_LEN_OFFSET);
if (write_internal(pos + EVENT_LEN_OFFSET - 4, 4))
return 1;
int4store(pos + EVENT_LEN_OFFSET - 4, event_len);
event_len= 0;
}
return 0;
}
int Log_event_writer::encrypt_and_write(const uchar *pos, size_t len)
{
uchar *dst;
size_t dstsize;
uint dstlen;
int res; // Safe as res is always set
DBUG_ASSERT(ctx);
if (!len)
return 0;
dstsize= encryption_encrypted_length((uint)len, ENCRYPTION_KEY_SYSTEM_DATA,
crypto->key_version);
if (!(dst= (uchar*)my_safe_alloca(dstsize)))
return 1;
if (encryption_ctx_update(ctx, pos, (uint)len, dst, &dstlen))
{
res= 1;
goto err;
}
if (maybe_write_event_len(dst, dstlen))
{
res= 1;
goto err;
}
res= write_internal(dst, dstlen);
err:
my_safe_afree(dst, dstsize);
return res;
}
int Log_event_writer::write_header(uchar *pos, size_t len)
{
DBUG_ENTER("Log_event_writer::write_header");
/*
recording checksum of FD event computed with dropped
possibly active LOG_EVENT_BINLOG_IN_USE_F flag.
Similar step at verication: the active flag is dropped before
checksum computing.
*/
if (checksum_len)
{
uchar save=pos[FLAGS_OFFSET];
pos[FLAGS_OFFSET]&= ~LOG_EVENT_BINLOG_IN_USE_F;
crc= my_checksum(0, pos, len);
pos[FLAGS_OFFSET]= save;
}
if (ctx)
{
uchar iv[BINLOG_IV_LENGTH];
crypto->set_iv(iv, (uint32)my_b_safe_tell(file));
if (encryption_ctx_init(ctx, crypto->key, crypto->key_length,
iv, sizeof(iv), ENCRYPTION_FLAG_ENCRYPT | ENCRYPTION_FLAG_NOPAD,
ENCRYPTION_KEY_SYSTEM_DATA, crypto->key_version))
DBUG_RETURN(1);
DBUG_ASSERT(len >= LOG_EVENT_HEADER_LEN);
event_len= uint4korr(pos + EVENT_LEN_OFFSET);
DBUG_ASSERT(event_len >= len);
memcpy(pos + EVENT_LEN_OFFSET, pos, 4);
pos+= 4;
len-= 4;
}
DBUG_RETURN((this->*encrypt_or_write)(pos, len));
}
int Log_event_writer::write_data(const uchar *pos, size_t len)
{
DBUG_ENTER("Log_event_writer::write_data");
if (!len)
DBUG_RETURN(0);
if (checksum_len)
crc= my_checksum(crc, pos, len);
DBUG_RETURN((this->*encrypt_or_write)(pos, len));
}
int Log_event_writer::write_footer()
{
DBUG_ENTER("Log_event_writer::write_footer");
if (checksum_len)
{
uchar checksum_buf[BINLOG_CHECKSUM_LEN];
int4store(checksum_buf, crc);
if ((this->*encrypt_or_write)(checksum_buf, BINLOG_CHECKSUM_LEN))
DBUG_RETURN(ER_ERROR_ON_WRITE);
}
if (ctx)
{
uint dstlen;
uchar dst[MY_AES_BLOCK_SIZE*2];
if (encryption_ctx_finish(ctx, dst, &dstlen))
DBUG_RETURN(1);
if (maybe_write_event_len(dst, dstlen) || write_internal(dst, dstlen))
DBUG_RETURN(ER_ERROR_ON_WRITE);
}
DBUG_RETURN(0);
}
/*
Log_event::write_header()
*/
bool Log_event::write_header(size_t event_data_length)
{
uchar header[LOG_EVENT_HEADER_LEN];
ulong now;
DBUG_ENTER("Log_event::write_header");
DBUG_PRINT("enter", ("filepos: %lld length: %zu type: %d",
(longlong) writer->pos(), event_data_length,
(int) get_type_code()));
writer->checksum_len= need_checksum() ? BINLOG_CHECKSUM_LEN : 0;
/* Store number of bytes that will be written by this event */
data_written= event_data_length + sizeof(header) + writer->checksum_len;
/*
log_pos != 0 if this is relay-log event. In this case we should not
change the position
*/
if (is_artificial_event())
{
/*
Artificial events are automatically generated and do not exist
in master's binary log, so log_pos should be set to 0.
*/
log_pos= 0;
}
else if (!log_pos)
{
/*
Calculate the position of where the next event will start
(end of this event, that is).
*/
log_pos= writer->pos() + data_written;
DBUG_EXECUTE_IF("dbug_master_binlog_over_2GB", log_pos += (1ULL <<31););
}
now= get_time(); // Query start time
/*
Header will be of size LOG_EVENT_HEADER_LEN for all events, except for
FORMAT_DESCRIPTION_EVENT and ROTATE_EVENT, where it will be
LOG_EVENT_MINIMAL_HEADER_LEN (remember these 2 have a frozen header,
because we read them before knowing the format).
*/
int4store(header, now); // timestamp
header[EVENT_TYPE_OFFSET]= get_type_code();
int4store(header+ SERVER_ID_OFFSET, server_id);
int4store(header+ EVENT_LEN_OFFSET, data_written);
int4store(header+ LOG_POS_OFFSET, log_pos);
int2store(header + FLAGS_OFFSET, flags);
bool ret= writer->write_header(header, sizeof(header));
DBUG_RETURN(ret);
}
#if defined(HAVE_REPLICATION)
inline Log_event::enum_skip_reason
Log_event::continue_group(rpl_group_info *rgi)
{
if (rgi->rli->slave_skip_counter == 1)
return Log_event::EVENT_SKIP_IGNORE;
return Log_event::do_shall_skip(rgi);
}
#endif
/**************************************************************************
Query_log_event methods
**************************************************************************/
#if defined(HAVE_REPLICATION)
/**
This (which is used only for SHOW BINLOG EVENTS) could be updated to
print SET @@session_var=. But this is not urgent, as SHOW BINLOG EVENTS is
only an information, it does not produce suitable queries to replay (for
example it does not print LOAD DATA INFILE).
@todo
show the catalog ??
*/
void Query_log_event::pack_info(Protocol *protocol)
{
// TODO: show the catalog ??
char buf_mem[1024];
String buf(buf_mem, sizeof(buf_mem), system_charset_info);
buf.real_alloc(9 + db_len + q_len);
if (!(flags & LOG_EVENT_SUPPRESS_USE_F)
&& db && db_len)
{
buf.append(STRING_WITH_LEN("use "));
append_identifier(protocol->thd, &buf, db, db_len);
buf.append(STRING_WITH_LEN("; "));
}
DBUG_ASSERT(!flags2 || flags2_inited);
if (flags2 & (OPTION_NO_FOREIGN_KEY_CHECKS | OPTION_AUTO_IS_NULL |
OPTION_RELAXED_UNIQUE_CHECKS |
OPTION_NO_CHECK_CONSTRAINT_CHECKS |
OPTION_IF_EXISTS))
{
buf.append(STRING_WITH_LEN("set "));
if (flags2 & OPTION_NO_FOREIGN_KEY_CHECKS)
buf.append(STRING_WITH_LEN("foreign_key_checks=1, "));
if (flags2 & OPTION_AUTO_IS_NULL)
buf.append(STRING_WITH_LEN("sql_auto_is_null, "));
if (flags2 & OPTION_RELAXED_UNIQUE_CHECKS)
buf.append(STRING_WITH_LEN("unique_checks=1, "));
if (flags2 & OPTION_NO_CHECK_CONSTRAINT_CHECKS)
buf.append(STRING_WITH_LEN("check_constraint_checks=1, "));
if (flags2 & OPTION_IF_EXISTS)
buf.append(STRING_WITH_LEN("@@sql_if_exists=1, "));
buf[buf.length()-2]=';';
}
if (query && q_len)
buf.append(query, q_len);
protocol->store(&buf);
}
#endif
/**
Utility function for the next method (Query_log_event::write()) .
*/
static void store_str_with_code_and_len(uchar **dst, const char *src,
uint len, uint code)
{
/*
only 1 byte to store the length of catalog, so it should not
surpass 255
*/
DBUG_ASSERT(len <= 255);
DBUG_ASSERT(src);
*((*dst)++)= (uchar) code;
*((*dst)++)= (uchar) len;
bmove(*dst, src, len);
(*dst)+= len;
}
/**
Query_log_event::write().
@note
In this event we have to modify the header to have the correct
EVENT_LEN_OFFSET as we don't yet know how many status variables we
will print!
*/
bool Query_log_event::write()
{
uchar buf[QUERY_HEADER_LEN + MAX_SIZE_LOG_EVENT_STATUS];
uchar *start, *start_of_status;
ulong event_length;
if (!query)
return 1; // Something wrong with event
/*
We want to store the thread id:
(- as an information for the user when he reads the binlog)
- if the query uses temporary table: for the slave SQL thread to know to
which master connection the temp table belongs.
Now imagine we (write()) are called by the slave SQL thread (we are
logging a query executed by this thread; the slave runs with
--log-slave-updates). Then this query will be logged with
thread_id=the_thread_id_of_the_SQL_thread. Imagine that 2 temp tables of
the same name were created simultaneously on the master (in the master
binlog you have
CREATE TEMPORARY TABLE t; (thread 1)
CREATE TEMPORARY TABLE t; (thread 2)
...)
then in the slave's binlog there will be
CREATE TEMPORARY TABLE t; (thread_id_of_the_slave_SQL_thread)
CREATE TEMPORARY TABLE t; (thread_id_of_the_slave_SQL_thread)
which is bad (same thread id!).
To avoid this, we log the thread's thread id EXCEPT for the SQL
slave thread for which we log the original (master's) thread id.
Now this moves the bug: what happens if the thread id on the
master was 10 and when the slave replicates the query, a
connection number 10 is opened by a normal client on the slave,
and updates a temp table of the same name? We get a problem
again. To avoid this, in the handling of temp tables (sql_base.cc)
we use thread_id AND server_id. TODO when this is merged into
4.1: in 4.1, slave_proxy_id has been renamed to pseudo_thread_id
and is a session variable: that's to make mysqlbinlog work with
temp tables. We probably need to introduce
SET PSEUDO_SERVER_ID
for mysqlbinlog in 4.1. mysqlbinlog would print:
SET PSEUDO_SERVER_ID=
SET PSEUDO_THREAD_ID=
for each query using temp tables.
*/
int4store(buf + Q_THREAD_ID_OFFSET, slave_proxy_id);
int4store(buf + Q_EXEC_TIME_OFFSET, exec_time);
buf[Q_DB_LEN_OFFSET] = (char) db_len;
int2store(buf + Q_ERR_CODE_OFFSET, error_code);
/*
You MUST always write status vars in increasing order of code. This
guarantees that a slightly older slave will be able to parse those he
knows.
*/
start_of_status= start= buf+QUERY_HEADER_LEN;
if (flags2_inited)
{
*start++= Q_FLAGS2_CODE;
int4store(start, flags2);
start+= 4;
}
if (sql_mode_inited)
{
*start++= Q_SQL_MODE_CODE;
int8store(start, (ulonglong)sql_mode);
start+= 8;
}
if (catalog_len) // i.e. this var is inited (false for 4.0 events)
{
store_str_with_code_and_len(&start,
catalog, catalog_len, Q_CATALOG_NZ_CODE);
/*
In 5.0.x where x<4 masters we used to store the end zero here. This was
a waste of one byte so we don't do it in x>=4 masters. We change code to
Q_CATALOG_NZ_CODE, because re-using the old code would make x<4 slaves
of this x>=4 master segfault (expecting a zero when there is
none). Remaining compatibility problems are: the older slave will not
find the catalog; but it is will not crash, and it's not an issue
that it does not find the catalog as catalogs were not used in these
older MySQL versions (we store it in binlog and read it from relay log
but do nothing useful with it). What is an issue is that the older slave
will stop processing the Q_* blocks (and jumps to the db/query) as soon
as it sees unknown Q_CATALOG_NZ_CODE; so it will not be able to read
Q_AUTO_INCREMENT*, Q_CHARSET and so replication will fail silently in
various ways. Documented that you should not mix alpha/beta versions if
they are not exactly the same version, with example of 5.0.3->5.0.2 and
5.0.4->5.0.3. If replication is from older to new, the new will
recognize Q_CATALOG_CODE and have no problem.
*/
}
if (auto_increment_increment != 1 || auto_increment_offset != 1)
{
*start++= Q_AUTO_INCREMENT;
int2store(start, auto_increment_increment);
int2store(start+2, auto_increment_offset);
start+= 4;
}
if (charset_inited)
{
*start++= Q_CHARSET_CODE;
memcpy(start, charset, 6);
start+= 6;
}
if (time_zone_len)
{
/* In the TZ sys table, column Name is of length 64 so this should be ok */
DBUG_ASSERT(time_zone_len <= MAX_TIME_ZONE_NAME_LENGTH);
store_str_with_code_and_len(&start,
time_zone_str, time_zone_len, Q_TIME_ZONE_CODE);
}
if (lc_time_names_number)
{
DBUG_ASSERT(lc_time_names_number <= 0xFFFF);
*start++= Q_LC_TIME_NAMES_CODE;
int2store(start, lc_time_names_number);
start+= 2;
}
if (charset_database_number)
{
DBUG_ASSERT(charset_database_number <= 0xFFFF);
*start++= Q_CHARSET_DATABASE_CODE;
int2store(start, charset_database_number);
start+= 2;
}
if (table_map_for_update)
{
*start++= Q_TABLE_MAP_FOR_UPDATE_CODE;
int8store(start, table_map_for_update);
start+= 8;
}
if (master_data_written != 0)
{
/*
Q_MASTER_DATA_WRITTEN_CODE only exists in relay logs where the master
has binlog_version<4 and the slave has binlog_version=4. See comment
for master_data_written in log_event.h for details.
*/
*start++= Q_MASTER_DATA_WRITTEN_CODE;
int4store(start, master_data_written);
start+= 4;
}
if (thd && thd->need_binlog_invoker())
{
LEX_CSTRING user;
LEX_CSTRING host;
memset(&user, 0, sizeof(user));
memset(&host, 0, sizeof(host));
if (thd->slave_thread && thd->has_invoker())
{
/* user will be null, if master is older than this patch */
user= thd->get_invoker_user();
host= thd->get_invoker_host();
}
else
{
Security_context *ctx= thd->security_ctx;
if (thd->need_binlog_invoker() == THD::INVOKER_USER)
{
user.str= ctx->priv_user;
host.str= ctx->priv_host;
host.length= strlen(host.str);
}
else
{
user.str= ctx->priv_role;
host= empty_clex_str;
}
user.length= strlen(user.str);
}
if (user.length > 0)
{
*start++= Q_INVOKER;
/*
Store user length and user. The max length of use is 16, so 1 byte is
enough to store the user's length.
*/
*start++= (uchar)user.length;
memcpy(start, user.str, user.length);
start+= user.length;
/*
Store host length and host. The max length of host is 60, so 1 byte is
enough to store the host's length.
*/
*start++= (uchar)host.length;
memcpy(start, host.str, host.length);
start+= host.length;
}
}
if (thd && thd->query_start_sec_part_used)
{
*start++= Q_HRNOW;
get_time();
int3store(start, when_sec_part);
start+= 3;
}
/* xid's is used with ddl_log handling */
if (thd && thd->binlog_xid)
{
*start++= Q_XID;
int8store(start, thd->binlog_xid);
start+= 8;
}
/*
NOTE: When adding new status vars, please don't forget to update
the MAX_SIZE_LOG_EVENT_STATUS in log_event.h and update the function
code_name() in this file.
Here there could be code like
if (command-line-option-which-says-"log_this_variable" && inited)
{
*start++= Q_THIS_VARIABLE_CODE;
int4store(start, this_variable);
start+= 4;
}
*/
/* Store length of status variables */
status_vars_len= (uint) (start-start_of_status);
DBUG_ASSERT(status_vars_len <= MAX_SIZE_LOG_EVENT_STATUS);
int2store(buf + Q_STATUS_VARS_LEN_OFFSET, status_vars_len);
/*
Calculate length of whole event
The "1" below is the \0 in the db's length
*/
event_length= ((uint) (start-buf) + get_post_header_size_for_derived() +
db_len + 1 + q_len);
return write_header(event_length) ||
write_data(buf, QUERY_HEADER_LEN) ||
write_post_header_for_derived() ||
write_data(start_of_status, (uint) status_vars_len) ||
write_data(db, db_len + 1) ||
write_data(query, q_len) ||
write_footer();
}
bool Query_compressed_log_event::write()
{
uchar *buffer;
uint32 alloc_size, compressed_size;
bool ret= true;
compressed_size= alloc_size= binlog_get_compress_len(q_len);
buffer= (uchar*) my_safe_alloca(alloc_size);
if (buffer &&
!binlog_buf_compress((uchar*) query, buffer, q_len, &compressed_size))
{
/*
Write the compressed event. We have to temporarily store the event
in query and q_len as Query_log_event::write() uses these.
*/
const char *query_tmp= query;
uint32 q_len_tmp= q_len;
query= (char*) buffer;
q_len= compressed_size;
ret= Query_log_event::write();
query= query_tmp;
q_len= q_len_tmp;
}
my_safe_afree(buffer, alloc_size);
return ret;
}
/**
The simplest constructor that could possibly work. This is used for
creating static objects that have a special meaning and are invisible
to the log.
*/
Query_log_event::Query_log_event()
:Log_event(), data_buf(0)
{
memset(&user, 0, sizeof(user));
memset(&host, 0, sizeof(host));
}
/*
SYNOPSIS
Query_log_event::Query_log_event()
thd_arg - thread handle
query_arg - array of char representing the query
query_length - size of the `query_arg' array
using_trans - there is a modified transactional table
direct - Don't cache statement
suppress_use - suppress the generation of 'USE' statements
errcode - the error code of the query
DESCRIPTION
Creates an event for binlogging
The value for `errcode' should be supplied by caller.
*/
Query_log_event::Query_log_event(THD* thd_arg, const char* query_arg,
size_t query_length, bool using_trans,
bool direct, bool suppress_use, int errcode)
:Log_event(thd_arg,
(thd_arg->thread_specific_used ? LOG_EVENT_THREAD_SPECIFIC_F :
0) |
(suppress_use ? LOG_EVENT_SUPPRESS_USE_F : 0),
using_trans),
data_buf(0), query(query_arg), catalog(thd_arg->catalog),
q_len((uint32) query_length),
thread_id(thd_arg->thread_id),
/* save the original thread id; we already know the server id */
slave_proxy_id((ulong)thd_arg->variables.pseudo_thread_id),
flags2_inited(1), sql_mode_inited(1), charset_inited(1), flags2(0),
sql_mode(thd_arg->variables.sql_mode),
auto_increment_increment(thd_arg->variables.auto_increment_increment),
auto_increment_offset(thd_arg->variables.auto_increment_offset),
lc_time_names_number(thd_arg->variables.lc_time_names->number),
charset_database_number(0),
table_map_for_update((ulonglong)thd_arg->table_map_for_update),
master_data_written(0)
{
/* status_vars_len is set just before writing the event */
time_t end_time;
#ifdef WITH_WSREP
/*
If Query_log_event will contain non trans keyword (not BEGIN, COMMIT,
SAVEPOINT or ROLLBACK) we disable PA for this transaction.
Note that here WSREP(thd) might not be true e.g. when wsrep_shcema
is created we create tables with thd->variables.wsrep_on=false
to avoid replicating wsrep_schema tables to other nodes.
*/
if (WSREP_ON && !is_trans_keyword(false))
{
thd->wsrep_PA_safe= false;
}
#endif /* WITH_WSREP */
memset(&user, 0, sizeof(user));
memset(&host, 0, sizeof(host));
error_code= errcode;
end_time= my_time(0);
exec_time = (ulong) (end_time - thd_arg->start_time);
/**
@todo this means that if we have no catalog, then it is replicated
as an existing catalog of length zero. is that safe? /sven
*/
catalog_len = (catalog) ? (uint32) strlen(catalog) : 0;
if (!(db= thd->db.str))
db= "";
db_len= (uint32) strlen(db);
if (thd_arg->variables.collation_database != thd_arg->db_charset)
charset_database_number= thd_arg->variables.collation_database->number;
/*
We only replicate over the bits of flags2 that we need: the rest
are masked out by "& OPTIONS_WRITTEN_TO_BINLOG".
We also force AUTOCOMMIT=1. Rationale (cf. BUG#29288): After
fixing BUG#26395, we always write BEGIN and COMMIT around all
transactions (even single statements in autocommit mode). This is
so that replication from non-transactional to transactional table
and error recovery from XA to non-XA table should work as
expected. The BEGIN/COMMIT are added in log.cc. However, there is
one exception: MyISAM bypasses log.cc and writes directly to the
binlog. So if autocommit is off, master has MyISAM, and slave has
a transactional engine, then the slave will just see one long
never-ending transaction. The only way to bypass explicit
BEGIN/COMMIT in the binlog is by using a non-transactional table.
So setting AUTOCOMMIT=1 will make this work as expected.
Note: explicitly replicate AUTOCOMMIT=1 from master. We do not
assume AUTOCOMMIT=1 on slave; the slave still reads the state of
the autocommit flag as written by the master to the binlog. This
behavior may change after WL#4162 has been implemented.
*/
flags2= (uint32) (thd_arg->variables.option_bits &
(OPTIONS_WRITTEN_TO_BIN_LOG & ~OPTION_NOT_AUTOCOMMIT));
DBUG_ASSERT(thd_arg->variables.character_set_client->number < 256*256);
DBUG_ASSERT(thd_arg->variables.collation_connection->number < 256*256);
DBUG_ASSERT(thd_arg->variables.collation_server->number < 256*256);
DBUG_ASSERT(thd_arg->variables.character_set_client->mbminlen == 1);
int2store(charset, thd_arg->variables.character_set_client->number);
int2store(charset+2, thd_arg->variables.collation_connection->number);
int2store(charset+4, thd_arg->variables.collation_server->number);
if (thd_arg->time_zone_used)
{
/*
Note that our event becomes dependent on the Time_zone object
representing the time zone. Fortunately such objects are never deleted
or changed during mysqld's lifetime.
*/
time_zone_len= thd_arg->variables.time_zone->get_name()->length();
time_zone_str= thd_arg->variables.time_zone->get_name()->ptr();
}
else
time_zone_len= 0;
LEX *lex= thd->lex;
/*
Defines that the statement will be written directly to the binary log
without being wrapped by a BEGIN...COMMIT. Otherwise, the statement
will be written to either the trx-cache or stmt-cache.
Note that a cache will not be used if the parameter direct is TRUE.
*/
bool use_cache= FALSE;
/*
TRUE defines that the trx-cache must be used and by consequence the
use_cache is TRUE.
Note that a cache will not be used if the parameter direct is TRUE.
*/
bool trx_cache= FALSE;
cache_type= Log_event::EVENT_INVALID_CACHE;
if (!direct)
{
switch (lex->sql_command)
{
case SQLCOM_DROP_TABLE:
case SQLCOM_DROP_SEQUENCE:
use_cache= (lex->tmp_table() && thd->in_multi_stmt_transaction_mode());
break;
case SQLCOM_CREATE_TABLE:
case SQLCOM_CREATE_SEQUENCE:
/*
If we are using CREATE ... SELECT or if we are a slave
executing BEGIN...COMMIT (generated by CREATE...SELECT) we
have to use the transactional cache to ensure we don't
calculate any checksum for the CREATE part.
*/
trx_cache= (lex->first_select_lex()->item_list.elements &&
thd->is_current_stmt_binlog_format_row()) ||
(thd->variables.option_bits & OPTION_GTID_BEGIN);
use_cache= (lex->tmp_table() &&
thd->in_multi_stmt_transaction_mode()) || trx_cache;
break;
case SQLCOM_SET_OPTION:
if (lex->autocommit)
use_cache= trx_cache= FALSE;
else
use_cache= TRUE;
break;
case SQLCOM_RELEASE_SAVEPOINT:
case SQLCOM_ROLLBACK_TO_SAVEPOINT:
case SQLCOM_SAVEPOINT:
case SQLCOM_XA_END:
use_cache= trx_cache= TRUE;
break;
default:
use_cache= sqlcom_can_generate_row_events(thd);
break;
}
}
if (!use_cache || direct)
{
cache_type= Log_event::EVENT_NO_CACHE;
}
else if (using_trans || trx_cache || stmt_has_updated_trans_table(thd) ||
thd->lex->is_mixed_stmt_unsafe(thd->in_multi_stmt_transaction_mode(),
thd->variables.binlog_direct_non_trans_update,
trans_has_updated_trans_table(thd),
thd->tx_isolation))
cache_type= Log_event::EVENT_TRANSACTIONAL_CACHE;
else
cache_type= Log_event::EVENT_STMT_CACHE;
DBUG_ASSERT(cache_type != Log_event::EVENT_INVALID_CACHE);
DBUG_PRINT("info",("Query_log_event has flags2: %lu sql_mode: %llu cache_tye: %d",
(ulong) flags2, sql_mode, cache_type));
}
Query_compressed_log_event::Query_compressed_log_event(THD* thd_arg, const char* query_arg,
ulong query_length, bool using_trans,
bool direct, bool suppress_use, int errcode)
:Query_log_event(thd_arg, query_arg, query_length, using_trans, direct,
suppress_use, errcode),
query_buf(0)
{
}
#if defined(HAVE_REPLICATION)
int Query_log_event::do_apply_event(rpl_group_info *rgi)
{
return do_apply_event(rgi, query, q_len);
}
/**
Compare if two errors should be regarded as equal.
This is to handle the case when you can get slightly different errors
on master and slave for the same thing.
@param
expected_error Error we got on master
actual_error Error we got on slave
@return
1 Errors are equal
0 Errors are different
*/
bool test_if_equal_repl_errors(int expected_error, int actual_error)
{
if (expected_error == actual_error)
return 1;
switch (expected_error) {
case ER_DUP_ENTRY:
case ER_DUP_ENTRY_WITH_KEY_NAME:
case ER_DUP_KEY:
case ER_AUTOINC_READ_FAILED:
return (actual_error == ER_DUP_ENTRY ||
actual_error == ER_DUP_ENTRY_WITH_KEY_NAME ||
actual_error == ER_DUP_KEY ||
actual_error == ER_AUTOINC_READ_FAILED ||
actual_error == HA_ERR_AUTOINC_ERANGE);
case ER_UNKNOWN_TABLE:
return actual_error == ER_IT_IS_A_VIEW;
default:
break;
}
return 0;
}
/**
@todo
Compare the values of "affected rows" around here. Something
like:
@code
if ((uint32) affected_in_event != (uint32) affected_on_slave)
{
sql_print_error("Slave: did not get the expected number of affected \
rows running query from master - expected %d, got %d (this numbers \
should have matched modulo 4294967296).", 0, ...);
thd->query_error = 1;
}
@endcode
We may also want an option to tell the slave to ignore "affected"
mismatch. This mismatch could be implemented with a new ER_ code, and
to ignore it you would use --slave-skip-errors...
*/
int Query_log_event::do_apply_event(rpl_group_info *rgi,
const char *query_arg, uint32 q_len_arg)
{
int expected_error,actual_error= 0;
Schema_specification_st db_options;
uint64 sub_id= 0;
void *hton= NULL;
rpl_gtid gtid;
Relay_log_info const *rli= rgi->rli;
Rpl_filter *rpl_filter= rli->mi->rpl_filter;
bool current_stmt_is_commit;
DBUG_ENTER("Query_log_event::do_apply_event");
/*
Colleagues: please never free(thd->catalog) in MySQL. This would
lead to bugs as here thd->catalog is a part of an alloced block,
not an entire alloced block (see
Query_log_event::do_apply_event()). Same for thd->db. Thank
you.
*/
thd->catalog= catalog_len ? (char *) catalog : (char *)"";
size_t valid_len= Well_formed_prefix(system_charset_info,
db, db_len, NAME_LEN).length();
if (valid_len != db_len)
{
rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR,
ER_THD(thd, ER_SLAVE_FATAL_ERROR),
"Invalid database name in Query event.");
thd->is_slave_error= true;
goto end;
}
set_thd_db(thd, rpl_filter, db, db_len);
/*
Setting the character set and collation of the current database thd->db.
*/
load_db_opt_by_name(thd, thd->db.str, &db_options);
if (db_options.default_table_charset)
thd->db_charset= db_options.default_table_charset;
thd->variables.auto_increment_increment= auto_increment_increment;
thd->variables.auto_increment_offset= auto_increment_offset;
DBUG_PRINT("info", ("log_pos: %lu", (ulong) log_pos));
thd->clear_error(1);
current_stmt_is_commit= is_commit();
DBUG_ASSERT(!current_stmt_is_commit || !rgi->tables_to_lock);
rgi->slave_close_thread_tables(thd);
/*
Note: We do not need to execute reset_one_shot_variables() if this
db_ok() test fails.
Reason: The db stored in binlog events is the same for SET and for
its companion query. If the SET is ignored because of
db_ok(), the companion query will also be ignored, and if
the companion query is ignored in the db_ok() test of
::do_apply_event(), then the companion SET also have so
we don't need to reset_one_shot_variables().
*/
if (rpl_filter->is_db_empty() ||
is_trans_keyword(
(rgi->gtid_ev_flags2 & (Gtid_log_event::FL_PREPARED_XA |
Gtid_log_event::FL_COMPLETED_XA))) ||
rpl_filter->db_ok(thd->db.str))
{
thd->set_time(when, when_sec_part);
thd->set_query_and_id((char*)query_arg, q_len_arg,
thd->charset(), next_query_id());
thd->variables.pseudo_thread_id= thread_id; // for temp tables
DBUG_PRINT("query",("%s", thd->query()));
#ifdef WITH_WSREP
if (WSREP(thd))
{
WSREP_DEBUG("Query_log_event thread=%llu for query=%s",
thd_get_thread_id(thd), wsrep_thd_query(thd));
}
#endif
if (unlikely(!(expected_error= error_code)) ||
ignored_error_code(expected_error) ||
!unexpected_error_code(expected_error))
{
thd->slave_expected_error= expected_error;
if (flags2_inited)
{
ulonglong mask= flags2_inited;
thd->variables.option_bits= (flags2 & mask) |
(thd->variables.option_bits & ~mask);
}
/*
else, we are in a 3.23/4.0 binlog; we previously received a
Rotate_log_event which reset thd->variables.option_bits and
sql_mode etc, so nothing to do.
*/
/*
We do not replicate MODE_NO_DIR_IN_CREATE. That is, if the master is a
slave which runs with SQL_MODE=MODE_NO_DIR_IN_CREATE, this should not
force us to ignore the dir too. Imagine you are a ring of machines, and
one has a disk problem so that you temporarily need
MODE_NO_DIR_IN_CREATE on this machine; you don't want it to propagate
elsewhere (you don't want all slaves to start ignoring the dirs).
*/
if (sql_mode_inited)
thd->variables.sql_mode=
(sql_mode_t) ((thd->variables.sql_mode & MODE_NO_DIR_IN_CREATE) |
(sql_mode & ~(sql_mode_t) MODE_NO_DIR_IN_CREATE));
if (charset_inited)
{
rpl_sql_thread_info *sql_info= thd->system_thread_info.rpl_sql_info;
if (sql_info->cached_charset_compare(charset))
{
/* Verify that we support the charsets found in the event. */
if (!(thd->variables.character_set_client=
get_charset(uint2korr(charset), MYF(MY_WME))) ||
!(thd->variables.collation_connection=
get_charset(uint2korr(charset+2), MYF(MY_WME))) ||
!(thd->variables.collation_server=
get_charset(uint2korr(charset+4), MYF(MY_WME))))
{
/*
We updated the thd->variables with nonsensical values (0). Let's
set them to something safe (i.e. which avoids crash), and we'll
stop with EE_UNKNOWN_CHARSET in compare_errors (unless set to
ignore this error).
*/
set_slave_thread_default_charset(thd, rgi);
goto compare_errors;
}
thd->update_charset(); // for the charset change to take effect
/*
Reset thd->query_string.cs to the newly set value.
Note, there is a small flaw here. For a very short time frame
if the new charset is different from the old charset and
if another thread executes "SHOW PROCESSLIST" after
the above thd->set_query_and_id() and before this thd->set_query(),
and if the current query has some non-ASCII characters,
the another thread may see some '?' marks in the PROCESSLIST
result. This should be acceptable now. This is a reminder
to fix this if any refactoring happens here sometime.
*/
thd->set_query((char*) query_arg, q_len_arg, thd->charset());
}
}
if (time_zone_len)
{
String tmp(time_zone_str, time_zone_len, &my_charset_bin);
if (!(thd->variables.time_zone= my_tz_find(thd, &tmp)))
{
my_error(ER_UNKNOWN_TIME_ZONE, MYF(0), tmp.c_ptr());
thd->variables.time_zone= global_system_variables.time_zone;
goto compare_errors;
}
}
if (lc_time_names_number)
{
if (!(thd->variables.lc_time_names=
my_locale_by_number(lc_time_names_number)))
{
my_printf_error(ER_UNKNOWN_ERROR,
"Unknown locale: '%d'", MYF(0), lc_time_names_number);
thd->variables.lc_time_names= &my_locale_en_US;
goto compare_errors;
}
}
else
thd->variables.lc_time_names= &my_locale_en_US;
if (charset_database_number)
{
CHARSET_INFO *cs;
if (!(cs= get_charset(charset_database_number, MYF(0))))
{
char buf[20];
int10_to_str((int) charset_database_number, buf, -10);
my_error(ER_UNKNOWN_COLLATION, MYF(0), buf);
goto compare_errors;
}
thd->variables.collation_database= cs;
}
else
thd->variables.collation_database= thd->db_charset;
{
const CHARSET_INFO *cs= thd->charset();
/*
We cannot ask for parsing a statement using a character set
without state_maps (parser internal data).
*/
if (!cs->state_map)
{
rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR,
ER_THD(thd, ER_SLAVE_FATAL_ERROR),
"character_set cannot be parsed");
thd->is_slave_error= true;
goto end;
}
}
/*
Record any GTID in the same transaction, so slave state is
transactionally consistent.
*/
if (current_stmt_is_commit)
{
thd->variables.option_bits&= ~OPTION_GTID_BEGIN;
if (rgi->gtid_pending)
{
sub_id= rgi->gtid_sub_id;
rgi->gtid_pending= false;
gtid= rgi->current_gtid;
if (unlikely(rpl_global_gtid_slave_state->record_gtid(thd, &gtid,
sub_id,
true, false,
&hton)))
{
int errcode= thd->get_stmt_da()->sql_errno();
if (!is_parallel_retry_error(rgi, errcode))
rli->report(ERROR_LEVEL, ER_CANNOT_UPDATE_GTID_STATE,
rgi->gtid_info(),
"Error during COMMIT: failed to update GTID state in "
"%s.%s: %d: %s",
"mysql", rpl_gtid_slave_state_table_name.str,
errcode,
thd->get_stmt_da()->message());
sub_id= 0;
thd->is_slave_error= 1;
goto end;
}
}
}
thd->table_map_for_update= (table_map)table_map_for_update;
thd->set_invoker(&user, &host);
/*
Flag if we need to rollback the statement transaction on
slave if it by chance succeeds.
If we expected a non-zero error code and get nothing and,
it is a concurrency issue or ignorable issue, effects
of the statement should be rolled back.
*/
if (unlikely(expected_error) &&
(ignored_error_code(expected_error) ||
concurrency_error_code(expected_error)))
{
thd->variables.option_bits|= OPTION_MASTER_SQL_ERROR;
thd->variables.option_bits&= ~OPTION_GTID_BEGIN;
}
/* Execute the query (note that we bypass dispatch_command()) */
Parser_state parser_state;
if (!parser_state.init(thd, thd->query(), thd->query_length()))
{
DBUG_ASSERT(thd->m_digest == NULL);
thd->m_digest= & thd->m_digest_state;
DBUG_ASSERT(thd->m_statement_psi == NULL);
thd->m_statement_psi= MYSQL_START_STATEMENT(&thd->m_statement_state,
stmt_info_rpl.m_key,
thd->db.str, thd->db.length,
thd->charset(), NULL);
THD_STAGE_INFO(thd, stage_starting);
MYSQL_SET_STATEMENT_TEXT(thd->m_statement_psi, thd->query(), thd->query_length());
if (thd->m_digest != NULL)
thd->m_digest->reset(thd->m_token_array, max_digest_length);
if (thd->slave_thread)
{
/*
To be compatible with previous releases, the slave thread uses the global
log_slow_disabled_statements value, wich can be changed dynamically, so we
have to set the sql_log_slow respectively.
*/
thd->variables.sql_log_slow= !MY_TEST(global_system_variables.log_slow_disabled_statements & LOG_SLOW_DISABLE_SLAVE);
}
mysql_parse(thd, thd->query(), thd->query_length(), &parser_state);
/* Finalize server status flags after executing a statement. */
thd->update_server_status();
log_slow_statement(thd);
thd->lex->restore_set_statement_var();
/*
When THD::slave_expected_error gets reset inside execution stack
that is the case of to be ignored event. In this case the expected
error must change to the reset value as well.
*/
expected_error= thd->slave_expected_error;
}
thd->variables.option_bits&= ~OPTION_MASTER_SQL_ERROR;
}
else
{
/*
The query got a really bad error on the master (thread killed etc),
which could be inconsistent. Parse it to test the table names: if the
replicate-*-do|ignore-table rules say "this query must be ignored" then
we exit gracefully; otherwise we warn about the bad error and tell DBA
to check/fix it.
*/
if (mysql_test_parse_for_slave(thd, thd->query(), thd->query_length()))
thd->clear_error(1);
else
{
rli->report(ERROR_LEVEL, expected_error, rgi->gtid_info(),
"\
Query partially completed on the master (error on master: %d) \
and was aborted. There is a chance that your master is inconsistent at this \
point. If you are sure that your master is ok, run this query manually on the \
slave and then restart the slave with SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1; \
START SLAVE; . Query: '%s'", expected_error, thd->query());
thd->is_slave_error= 1;
}
goto end;
}
/* If the query was not ignored, it is printed to the general log */
if (likely(!thd->is_error()) ||
thd->get_stmt_da()->sql_errno() != ER_SLAVE_IGNORED_TABLE)
general_log_write(thd, COM_QUERY, thd->query(), thd->query_length());
else
{
/*
Bug#54201: If we skip an INSERT query that uses auto_increment, then we
should reset any @@INSERT_ID set by an Intvar_log_event associated with
the query; otherwise the @@INSERT_ID will linger until the next INSERT
that uses auto_increment and may affect extra triggers on the slave etc.
We reset INSERT_ID unconditionally; it is probably cheaper than
checking if it is necessary.
*/
thd->auto_inc_intervals_forced.empty();
}
compare_errors:
/*
In the slave thread, we may sometimes execute some DROP / * 40005
TEMPORARY * / TABLE that come from parts of binlogs (likely if we
use RESET SLAVE or CHANGE MASTER TO), while the temporary table
has already been dropped. To ignore such irrelevant "table does
not exist errors", we silently clear the error if TEMPORARY was used.
*/
if ((thd->lex->sql_command == SQLCOM_DROP_TABLE ||
thd->lex->sql_command == SQLCOM_DROP_SEQUENCE) &&
thd->lex->tmp_table() &&
thd->is_error() && thd->get_stmt_da()->sql_errno() == ER_BAD_TABLE_ERROR &&
!expected_error)
thd->get_stmt_da()->reset_diagnostics_area();
/*
If we expected a non-zero error code, and we don't get the same error
code, and it should be ignored or is related to a concurrency issue.
*/
actual_error= thd->is_error() ? thd->get_stmt_da()->sql_errno() : 0;
DBUG_PRINT("info",("expected_error: %d sql_errno: %d",
expected_error, actual_error));
if ((unlikely(expected_error) &&
!test_if_equal_repl_errors(expected_error, actual_error) &&
!concurrency_error_code(expected_error)) &&
!ignored_error_code(actual_error) &&
!ignored_error_code(expected_error))
{
rli->report(ERROR_LEVEL, 0, rgi->gtid_info(),
"Query caused different errors on master and slave. "
"Error on master: message (format)='%s' error code=%d ; "
"Error on slave: actual message='%s', error code=%d. "
"Default database: '%s'. Query: '%s'",
ER_THD(thd, expected_error),
expected_error,
actual_error ? thd->get_stmt_da()->message() : "no error",
actual_error,
print_slave_db_safe(db), query_arg);
thd->is_slave_error= 1;
}
/*
If we get the same error code as expected and it is not a concurrency
issue, or should be ignored.
*/
else if ((test_if_equal_repl_errors(expected_error, actual_error) &&
!concurrency_error_code(expected_error)) ||
ignored_error_code(actual_error))
{
DBUG_PRINT("info",("error ignored"));
thd->clear_error(1);
if (actual_error == ER_QUERY_INTERRUPTED ||
actual_error == ER_CONNECTION_KILLED)
thd->reset_killed();
}
else if (actual_error == ER_XAER_NOTA && !rpl_filter->db_ok(get_db()))
{
/*
If there is an XA query whos XID cannot be found, if the replication
filter is active and filters the target database, assume that the XID
cache has been cleared (e.g. by server restart) since it was prepared,
so we can just ignore this event.
*/
thd->clear_error(1);
}
/*
Other cases: mostly we expected no error and get one.
*/
else if (unlikely(thd->is_slave_error || thd->is_fatal_error))
{
if (!is_parallel_retry_error(rgi, actual_error))
rli->report(ERROR_LEVEL, actual_error, rgi->gtid_info(),
"Error '%s' on query. Default database: '%s'. Query: '%s'",
(actual_error ? thd->get_stmt_da()->message() :
"unexpected success or fatal error"),
thd->get_db(), query_arg);
thd->is_slave_error= 1;
#ifdef WITH_WSREP
if (wsrep_thd_is_toi(thd) && wsrep_must_ignore_error(thd))
{
thd->clear_error(1);
thd->killed= NOT_KILLED;
thd->wsrep_has_ignored_error= true;
}
#endif /* WITH_WSREP */
}
/*
TODO: compare the values of "affected rows" around here. Something
like:
if ((uint32) affected_in_event != (uint32) affected_on_slave)
{
sql_print_error("Slave: did not get the expected number of affected \
rows running query from master - expected %d, got %d (this numbers \
should have matched modulo 4294967296).", 0, ...);
thd->is_slave_error = 1;
}
We may also want an option to tell the slave to ignore "affected"
mismatch. This mismatch could be implemented with a new ER_ code, and
to ignore it you would use --slave-skip-errors...
To do the comparison we need to know the value of "affected" which the
above mysql_parse() computed. And we need to know the value of
"affected" in the master's binlog. Both will be implemented later. The
important thing is that we now have the format ready to log the values
of "affected" in the binlog. So we can release 5.0.0 before effectively
logging "affected" and effectively comparing it.
*/
} /* End of if (db_ok(... */
{
/**
The following failure injecion works in cooperation with tests
setting @@global.debug= 'd,stop_slave_middle_group'.
The sql thread receives the killed status and will proceed
to shutdown trying to finish incomplete events group.
*/
DBUG_EXECUTE_IF("stop_slave_middle_group",
if (!current_stmt_is_commit && is_begin() == 0)
{
if (thd->transaction->all.modified_non_trans_table)
const_cast<Relay_log_info*>(rli)->abort_slave= 1;
};);
}
end:
if (unlikely(sub_id && !thd->is_slave_error))
rpl_global_gtid_slave_state->update_state_hash(sub_id, &gtid, hton, rgi);
/*
Probably we have set thd->query, thd->db, thd->catalog to point to places
in the data_buf of this event. Now the event is going to be deleted
probably, so data_buf will be freed, so the thd->... listed above will be
pointers to freed memory.
So we must set them to 0, so that those bad pointers values are not later
used. Note that "cleanup" queries like automatic DROP TEMPORARY TABLE
don't suffer from these assignments to 0 as DROP TEMPORARY
TABLE uses the db.table syntax.
*/
thd->catalog= 0;
thd->set_db(&null_clex_str); /* will free the current database */
thd->reset_query();
DBUG_PRINT("info", ("end: query= 0"));
/* Mark the statement completed. */
MYSQL_END_STATEMENT(thd->m_statement_psi, thd->get_stmt_da());
thd->m_statement_psi= NULL;
thd->m_digest= NULL;
/*
As a disk space optimization, future masters will not log an event for
LAST_INSERT_ID() if that function returned 0 (and thus they will be able
to replace the THD::stmt_depends_on_first_successful_insert_id_in_prev_stmt
variable by (THD->first_successful_insert_id_in_prev_stmt > 0) ; with the
resetting below we are ready to support that.
*/
thd->first_successful_insert_id_in_prev_stmt_for_binlog= 0;
thd->first_successful_insert_id_in_prev_stmt= 0;
thd->stmt_depends_on_first_successful_insert_id_in_prev_stmt= 0;
free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
DBUG_RETURN(thd->is_slave_error);
}
Log_event::enum_skip_reason
Query_log_event::do_shall_skip(rpl_group_info *rgi)
{
Relay_log_info *rli= rgi->rli;
DBUG_ENTER("Query_log_event::do_shall_skip");
DBUG_PRINT("debug", ("query: '%s' q_len: %d", query, q_len));
DBUG_ASSERT(query && q_len > 0);
DBUG_ASSERT(thd == rgi->thd);
/*
An event skipped due to @@skip_replication must not be counted towards the
number of events to be skipped due to @@sql_slave_skip_counter.
*/
if (flags & LOG_EVENT_SKIP_REPLICATION_F &&
opt_replicate_events_marked_for_skip != RPL_SKIP_REPLICATE)
DBUG_RETURN(Log_event::EVENT_SKIP_IGNORE);
if (rli->slave_skip_counter > 0)
{
if (is_begin())
{
thd->variables.option_bits|= OPTION_BEGIN | OPTION_GTID_BEGIN;
DBUG_RETURN(Log_event::continue_group(rgi));
}
if (is_commit() || is_rollback())
{
thd->variables.option_bits&= ~(OPTION_BEGIN | OPTION_GTID_BEGIN);
DBUG_RETURN(Log_event::EVENT_SKIP_COUNT);
}
}
#ifdef WITH_WSREP
else if (WSREP(thd) && wsrep_mysql_replication_bundle &&
opt_slave_domain_parallel_threads == 0 &&
thd->wsrep_mysql_replicated > 0 &&
(is_begin() || is_commit()))
{
if (++thd->wsrep_mysql_replicated < (int)wsrep_mysql_replication_bundle)
{
WSREP_DEBUG("skipping wsrep commit %d", thd->wsrep_mysql_replicated);
DBUG_RETURN(Log_event::EVENT_SKIP_IGNORE);
}
else
{
thd->wsrep_mysql_replicated = 0;
}
}
#endif /* WITH_WSREP */
DBUG_RETURN(Log_event::do_shall_skip(rgi));
}
bool
Query_log_event::peek_is_commit_rollback(const uchar *event_start,
size_t event_len,
enum enum_binlog_checksum_alg
checksum_alg)
{
if (checksum_alg == BINLOG_CHECKSUM_ALG_CRC32)
{
if (event_len > BINLOG_CHECKSUM_LEN)
event_len-= BINLOG_CHECKSUM_LEN;
else
event_len= 0;
}
else
DBUG_ASSERT(checksum_alg == BINLOG_CHECKSUM_ALG_UNDEF ||
checksum_alg == BINLOG_CHECKSUM_ALG_OFF);
if (event_len < LOG_EVENT_HEADER_LEN + QUERY_HEADER_LEN || event_len < 9)
return false;
return !memcmp(event_start + (event_len-7), "\0COMMIT", 7) ||
!memcmp(event_start + (event_len-9), "\0ROLLBACK", 9);
}
#endif
/**************************************************************************
Start_log_event_v3 methods
**************************************************************************/
Start_log_event_v3::Start_log_event_v3()
:Log_event(), created(0), binlog_version(BINLOG_VERSION),
dont_set_created(0)
{
memcpy(server_version, ::server_version, ST_SERVER_VER_LEN);
}
#if defined(HAVE_REPLICATION)
void Start_log_event_v3::pack_info(Protocol *protocol)
{
char buf[12 + ST_SERVER_VER_LEN + 14 + 22], *pos;
pos= strmov(buf, "Server ver: ");
pos= strmov(pos, server_version);
pos= strmov(pos, ", Binlog ver: ");
pos= int10_to_str(binlog_version, pos, 10);
protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
}
#endif
bool Start_log_event_v3::write()
{
char buff[START_V3_HEADER_LEN];
int2store(buff + ST_BINLOG_VER_OFFSET,binlog_version);
memcpy(buff + ST_SERVER_VER_OFFSET,server_version,ST_SERVER_VER_LEN);
if (!dont_set_created)
created= get_time(); // this sets when and when_sec_part as a side effect
int4store(buff + ST_CREATED_OFFSET,created);
return write_header(sizeof(buff)) ||
write_data(buff, sizeof(buff)) ||
write_footer();
}
#if defined(HAVE_REPLICATION)
/**
Start_log_event_v3::do_apply_event() .
The master started
IMPLEMENTATION
- To handle the case where the master died without having time to write
DROP TEMPORARY TABLE, DO RELEASE_LOCK (prepared statements' deletion is
TODO), we clean up all temporary tables that we got, if we are sure we
can (see below).
@todo
- Remove all active user locks.
Guilhem 2003-06: this is true but not urgent: the worst it can cause is
the use of a bit of memory for a user lock which will not be used
anymore. If the user lock is later used, the old one will be released. In
other words, no deadlock problem.
*/
int Start_log_event_v3::do_apply_event(rpl_group_info *rgi)
{
DBUG_ENTER("Start_log_event_v3::do_apply_event");
int error= 0;
Relay_log_info *rli= rgi->rli;
switch (binlog_version)
{
case 3:
case 4:
/*
This can either be 4.x (then a Start_log_event_v3 is only at master
startup so we are sure the master has restarted and cleared his temp
tables; the event always has 'created'>0) or 5.0 (then we have to test
'created').
*/
if (created)
{
rli->close_temporary_tables();
/*
The following is only false if we get here with a BINLOG statement
*/
if (rli->mi)
cleanup_load_tmpdir(&rli->mi->cmp_connection_name);
}
break;
/*
Now the older formats; in that case load_tmpdir is cleaned up by the I/O
thread.
*/
case 1:
if (strncmp(rli->relay_log.description_event_for_exec->server_version,
"3.23.57",7) >= 0 && created)
{
/*
Can distinguish, based on the value of 'created': this event was
generated at master startup.
*/
rli->close_temporary_tables();
}
/*
Otherwise, can't distinguish a Start_log_event generated at
master startup and one generated by master FLUSH LOGS, so cannot
be sure temp tables have to be dropped. So do nothing.
*/
break;
default:
/*
This case is not expected. It can be either an event corruption or an
unsupported binary log version.
*/
rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR,
ER_THD(thd, ER_SLAVE_FATAL_ERROR),
"Binlog version not supported");
DBUG_RETURN(1);
}
DBUG_RETURN(error);
}
#endif /* defined(HAVE_REPLICATION) */
/***************************************************************************
Format_description_log_event methods
****************************************************************************/
bool Format_description_log_event::write()
{
bool ret;
bool no_checksum;
/*
We don't call Start_log_event_v3::write() because this would make 2
my_b_safe_write().
*/
uchar buff[START_V3_HEADER_LEN+1];
size_t rec_size= sizeof(buff) + BINLOG_CHECKSUM_ALG_DESC_LEN +
number_of_event_types;
int2store(buff + ST_BINLOG_VER_OFFSET,binlog_version);
memcpy((char*) buff + ST_SERVER_VER_OFFSET,server_version,ST_SERVER_VER_LEN);
if (!dont_set_created)
created= get_time();
int4store(buff + ST_CREATED_OFFSET,created);
buff[ST_COMMON_HEADER_LEN_OFFSET]= common_header_len;
/*
if checksum is requested
record the checksum-algorithm descriptor next to
post_header_len vector which will be followed by the checksum value.
Master is supposed to trigger checksum computing by binlog_checksum_options,
slave does it via marking the event according to
FD_queue checksum_alg value.
*/
compile_time_assert(BINLOG_CHECKSUM_ALG_DESC_LEN == 1);
#ifdef DBUG_ASSERT_EXISTS
data_written= 0; // to prepare for need_checksum assert
#endif
uint8 checksum_byte= (uint8)
(need_checksum() ? checksum_alg : BINLOG_CHECKSUM_ALG_OFF);
/*
FD of checksum-aware server is always checksum-equipped, (V) is in,
regardless of @@global.binlog_checksum policy.
Thereby a combination of (A) == 0, (V) != 0 means
it's the checksum-aware server's FD event that heads checksum-free binlog
file.
Here 0 stands for checksumming OFF to evaluate (V) as 0 is that case.
A combination of (A) != 0, (V) != 0 denotes FD of the checksum-aware server
heading the checksummed binlog.
(A), (V) presence in FD of the checksum-aware server makes the event
1 + 4 bytes bigger comparing to the former FD.
*/
if ((no_checksum= (checksum_alg == BINLOG_CHECKSUM_ALG_OFF)))
{
checksum_alg= BINLOG_CHECKSUM_ALG_CRC32; // Forcing (V) room to fill anyway
}
ret= write_header(rec_size) ||
write_data(buff, sizeof(buff)) ||
write_data(post_header_len, number_of_event_types) ||
write_data(&checksum_byte, sizeof(checksum_byte)) ||
write_footer();
if (no_checksum)
checksum_alg= BINLOG_CHECKSUM_ALG_OFF;
return ret;
}
#if defined(HAVE_REPLICATION)
int Format_description_log_event::do_apply_event(rpl_group_info *rgi)
{
int ret= 0;
Relay_log_info *rli= rgi->rli;
DBUG_ENTER("Format_description_log_event::do_apply_event");
/*
As a transaction NEVER spans on 2 or more binlogs:
if we have an active transaction at this point, the master died
while writing the transaction to the binary log, i.e. while
flushing the binlog cache to the binlog. XA guarantees that master has
rolled back. So we roll back.
Note: this event could be sent by the master to inform us of the
format of its binlog; in other words maybe it is not at its
original place when it comes to us; we'll know this by checking
log_pos ("artificial" events have log_pos == 0).
*/
if (!thd->rli_fake &&
!is_artificial_event() && created && thd->transaction->all.ha_list)
{
/* This is not an error (XA is safe), just an information */
rli->report(INFORMATION_LEVEL, 0, NULL,
"Rolling back unfinished transaction (no COMMIT "
"or ROLLBACK in relay log). A probable cause is that "
"the master died while writing the transaction to "
"its binary log, thus rolled back too.");
rgi->cleanup_context(thd, 1);
}
/*
If this event comes from ourselves, there is no cleaning task to
perform, we don't call Start_log_event_v3::do_apply_event()
(this was just to update the log's description event).
*/
if (server_id != (uint32) global_system_variables.server_id)
{
/*
If the event was not requested by the slave i.e. the master sent
it while the slave asked for a position >4, the event will make
rli->group_master_log_pos advance. Say that the slave asked for
position 1000, and the Format_desc event's end is 96. Then in
the beginning of replication rli->group_master_log_pos will be
0, then 96, then jump to first really asked event (which is
>96). So this is ok.
*/
ret= Start_log_event_v3::do_apply_event(rgi);
}
if (!ret)
{
/* Save the information describing this binlog */
copy_crypto_data(rli->relay_log.description_event_for_exec);
delete rli->relay_log.description_event_for_exec;
rli->relay_log.description_event_for_exec= this;
}
DBUG_RETURN(ret);
}
int Format_description_log_event::do_update_pos(rpl_group_info *rgi)
{
if (server_id == (uint32) global_system_variables.server_id)
{
/*
We only increase the relay log position if we are skipping
events and do not touch any group_* variables, nor flush the
relay log info. If there is a crash, we will have to re-skip
the events again, but that is a minor issue.
If we do not skip stepping the group log position (and the
server id was changed when restarting the server), it might well
be that we start executing at a position that is invalid, e.g.,
at a Rows_log_event or a Query_log_event preceeded by a
Intvar_log_event instead of starting at a Table_map_log_event or
the Intvar_log_event respectively.
*/
rgi->inc_event_relay_log_pos();
return 0;
}
else
{
return Log_event::do_update_pos(rgi);
}
}
Log_event::enum_skip_reason
Format_description_log_event::do_shall_skip(rpl_group_info *rgi)
{
return Log_event::EVENT_SKIP_NOT;
}
#endif
#if defined(HAVE_REPLICATION)
int Start_encryption_log_event::do_apply_event(rpl_group_info* rgi)
{
return rgi->rli->relay_log.description_event_for_exec->start_decryption(this);
}
int Start_encryption_log_event::do_update_pos(rpl_group_info *rgi)
{
/*
master never sends Start_encryption_log_event, any SELE that a slave
might see was created locally in MYSQL_BIN_LOG::open() on the slave
*/
rgi->inc_event_relay_log_pos();
return 0;
}
#endif
/**************************************************************************
Load_log_event methods
**************************************************************************/
#if defined(HAVE_REPLICATION)
bool Load_log_event::print_query(THD *thd, bool need_db, const char *cs,
String *buf, my_off_t *fn_start,
my_off_t *fn_end, const char *qualify_db)
{
if (need_db && db && db_len)
{
buf->append(STRING_WITH_LEN("use "));
append_identifier(thd, buf, db, db_len);
buf->append(STRING_WITH_LEN("; "));
}
buf->append(STRING_WITH_LEN("LOAD DATA "));
if (is_concurrent)
buf->append(STRING_WITH_LEN("CONCURRENT "));
if (fn_start)
*fn_start= buf->length();
if (check_fname_outside_temp_buf())
buf->append(STRING_WITH_LEN("LOCAL "));
buf->append(STRING_WITH_LEN("INFILE '"));
buf->append_for_single_quote(fname, fname_len);
buf->append(STRING_WITH_LEN("' "));
if (sql_ex.opt_flags & REPLACE_FLAG)
buf->append(STRING_WITH_LEN("REPLACE "));
else if (sql_ex.opt_flags & IGNORE_FLAG)
buf->append(STRING_WITH_LEN("IGNORE "));
buf->append(STRING_WITH_LEN("INTO"));
if (fn_end)
*fn_end= buf->length();
buf->append(STRING_WITH_LEN(" TABLE "));
if (qualify_db)
{
append_identifier(thd, buf, qualify_db, strlen(qualify_db));
buf->append(STRING_WITH_LEN("."));
}
append_identifier(thd, buf, table_name, table_name_len);
if (cs != NULL)
{
buf->append(STRING_WITH_LEN(" CHARACTER SET "));
buf->append(cs, strlen(cs));
}
/* We have to create all optional fields as the default is not empty */
buf->append(STRING_WITH_LEN(" FIELDS TERMINATED BY "));
pretty_print_str(buf, sql_ex.field_term, sql_ex.field_term_len);
if (sql_ex.opt_flags & OPT_ENCLOSED_FLAG)
buf->append(STRING_WITH_LEN(" OPTIONALLY "));
buf->append(STRING_WITH_LEN(" ENCLOSED BY "));
pretty_print_str(buf, sql_ex.enclosed, sql_ex.enclosed_len);
buf->append(STRING_WITH_LEN(" ESCAPED BY "));
pretty_print_str(buf, sql_ex.escaped, sql_ex.escaped_len);
buf->append(STRING_WITH_LEN(" LINES TERMINATED BY "));
pretty_print_str(buf, sql_ex.line_term, sql_ex.line_term_len);
if (sql_ex.line_start_len)
{
buf->append(STRING_WITH_LEN(" STARTING BY "));
pretty_print_str(buf, sql_ex.line_start, sql_ex.line_start_len);
}
if ((long) skip_lines > 0)
{
buf->append(STRING_WITH_LEN(" IGNORE "));
buf->append_ulonglong(skip_lines);
buf->append(STRING_WITH_LEN(" LINES "));
}
if (num_fields)
{
uint i;
const char *field= fields;
buf->append(STRING_WITH_LEN(" ("));
for (i = 0; i < num_fields; i++)
{
if (i)
{
/*
Yes, the space and comma is reversed here. But this is mostly dead
code, at most used when reading really old binlogs from old servers,
so better just leave it as is...
*/
buf->append(STRING_WITH_LEN(" ,"));
}
append_identifier(thd, buf, field, field_lens[i]);
field+= field_lens[i] + 1;
}
buf->append(STRING_WITH_LEN(")"));
}
return 0;
}
void Load_log_event::pack_info(Protocol *protocol)
{
char query_buffer[1024];
String query_str(query_buffer, sizeof(query_buffer), system_charset_info);
query_str.length(0);
print_query(protocol->thd, TRUE, NULL, &query_str, 0, 0, NULL);
protocol->store(query_str.ptr(), query_str.length(), &my_charset_bin);
}
#endif /* defined(HAVE_REPLICATION) */
bool Load_log_event::write_data_header()
{
char buf[LOAD_HEADER_LEN];
int4store(buf + L_THREAD_ID_OFFSET, slave_proxy_id);
int4store(buf + L_EXEC_TIME_OFFSET, exec_time);
int4store(buf + L_SKIP_LINES_OFFSET, skip_lines);
buf[L_TBL_LEN_OFFSET] = (char)table_name_len;
buf[L_DB_LEN_OFFSET] = (char)db_len;
int4store(buf + L_NUM_FIELDS_OFFSET, num_fields);
return write_data(buf, LOAD_HEADER_LEN) != 0;
}
bool Load_log_event::write_data_body()
{
if (sql_ex.write_data(writer))
return 1;
if (num_fields && fields && field_lens)
{
if (write_data(field_lens, num_fields) ||
write_data(fields, field_block_len))
return 1;
}
return (write_data(table_name, table_name_len + 1) ||
write_data(db, db_len + 1) ||
write_data(fname, fname_len));
}
Load_log_event::Load_log_event(THD *thd_arg, const sql_exchange *ex,
const char *db_arg, const char *table_name_arg,
List<Item> &fields_arg,
bool is_concurrent_arg,
enum enum_duplicates handle_dup,
bool ignore, bool using_trans)
:Log_event(thd_arg,
thd_arg->thread_specific_used ? LOG_EVENT_THREAD_SPECIFIC_F : 0,
using_trans),
thread_id(thd_arg->thread_id),
slave_proxy_id((ulong)thd_arg->variables.pseudo_thread_id),
num_fields(0),fields(0),
field_lens(0),field_block_len(0),
table_name(table_name_arg ? table_name_arg : ""),
db(db_arg), fname(ex->file_name), local_fname(FALSE),
is_concurrent(is_concurrent_arg)
{
time_t end_time;
time(&end_time);
exec_time = (ulong) (end_time - thd_arg->start_time);
/* db can never be a zero pointer in 4.0 */
db_len = (uint32) strlen(db);
table_name_len = (uint32) strlen(table_name);
fname_len = (fname) ? (uint) strlen(fname) : 0;
sql_ex.field_term = ex->field_term->ptr();
sql_ex.field_term_len = (uint8) ex->field_term->length();
sql_ex.enclosed = ex->enclosed->ptr();
sql_ex.enclosed_len = (uint8) ex->enclosed->length();
sql_ex.line_term = ex->line_term->ptr();
sql_ex.line_term_len = (uint8) ex->line_term->length();
sql_ex.line_start = ex->line_start->ptr();
sql_ex.line_start_len = (uint8) ex->line_start->length();
sql_ex.escaped = ex->escaped->ptr();
sql_ex.escaped_len = (uint8) ex->escaped->length();
sql_ex.opt_flags = 0;
sql_ex.cached_new_format = -1;
if (ex->dumpfile)
sql_ex.opt_flags|= DUMPFILE_FLAG;
if (ex->opt_enclosed)
sql_ex.opt_flags|= OPT_ENCLOSED_FLAG;
sql_ex.empty_flags= 0;
switch (handle_dup) {
case DUP_REPLACE:
sql_ex.opt_flags|= REPLACE_FLAG;
break;
case DUP_UPDATE: // Impossible here
case DUP_ERROR:
break;
}
if (ignore)
sql_ex.opt_flags|= IGNORE_FLAG;
if (!ex->field_term->length())
sql_ex.empty_flags |= FIELD_TERM_EMPTY;
if (!ex->enclosed->length())
sql_ex.empty_flags |= ENCLOSED_EMPTY;
if (!ex->line_term->length())
sql_ex.empty_flags |= LINE_TERM_EMPTY;
if (!ex->line_start->length())
sql_ex.empty_flags |= LINE_START_EMPTY;
if (!ex->escaped->length())
sql_ex.empty_flags |= ESCAPED_EMPTY;
skip_lines = ex->skip_lines;
List_iterator<Item> li(fields_arg);
field_lens_buf.length(0);
fields_buf.length(0);
Item* item;
while ((item = li++))
{
num_fields++;
uchar len= (uchar) item->name.length;
field_block_len += len + 1;
fields_buf.append(item->name.str, len + 1);
field_lens_buf.append((char*)&len, 1);
}
field_lens = (const uchar*)field_lens_buf.ptr();
fields = fields_buf.ptr();
}
/**
Load_log_event::set_fields()
@note
This function can not use the member variable
for the database, since LOAD DATA INFILE on the slave
can be for a different database than the current one.
This is the reason for the affected_db argument to this method.
*/
void Load_log_event::set_fields(const char* affected_db,
List<Item> &field_list,
Name_resolution_context *context)
{
uint i;
const char* field = fields;
for (i= 0; i < num_fields; i++)
{
LEX_CSTRING field_name= {field, field_lens[i] };
field_list.push_back(new (thd->mem_root)
Item_field(thd, context,
Lex_cstring_strlen(affected_db),
Lex_cstring_strlen(table_name),
field_name),
thd->mem_root);
field+= field_lens[i] + 1;
}
}
#if defined(HAVE_REPLICATION)
/**
Does the data loading job when executing a LOAD DATA on the slave.
@param net
@param rli
@param use_rli_only_for_errors If set to 1, rli is provided to
Load_log_event::exec_event only for this
function to have RPL_LOG_NAME and
rli->last_slave_error, both being used by
error reports. rli's position advancing
is skipped (done by the caller which is
Execute_load_log_event::exec_event).
If set to 0, rli is provided for full use,
i.e. for error reports and position
advancing.
@todo
fix this; this can be done by testing rules in
Create_file_log_event::exec_event() and then discarding Append_block and
al.
@todo
this is a bug - this needs to be moved to the I/O thread
@retval
0 Success
@retval
1 Failure
*/
int Load_log_event::do_apply_event(NET* net, rpl_group_info *rgi,
bool use_rli_only_for_errors)
{
Relay_log_info const *rli= rgi->rli;
Rpl_filter *rpl_filter= rli->mi->rpl_filter;
DBUG_ENTER("Load_log_event::do_apply_event");
DBUG_ASSERT(thd->query() == 0);
set_thd_db(thd, rpl_filter, db, db_len);
thd->clear_error(1);
/* see Query_log_event::do_apply_event() and BUG#13360 */
DBUG_ASSERT(!rgi->m_table_map.count());
/*
Usually lex_start() is called by mysql_parse(), but we need it here
as the present method does not call mysql_parse().
*/
lex_start(thd);
thd->lex->local_file= local_fname;
thd->reset_for_next_command(0); // Errors are cleared above
/*
We test replicate_*_db rules. Note that we have already prepared
the file to load, even if we are going to ignore and delete it
now. So it is possible that we did a lot of disk writes for
nothing. In other words, a big LOAD DATA INFILE on the master will
still consume a lot of space on the slave (space in the relay log
+ space of temp files: twice the space of the file to load...)
even if it will finally be ignored. TODO: fix this; this can be
done by testing rules in Create_file_log_event::do_apply_event()
and then discarding Append_block and al. Another way is do the
filtering in the I/O thread (more efficient: no disk writes at
all).
Note: We do not need to execute reset_one_shot_variables() if this
db_ok() test fails.
Reason: The db stored in binlog events is the same for SET and for
its companion query. If the SET is ignored because of
db_ok(), the companion query will also be ignored, and if
the companion query is ignored in the db_ok() test of
::do_apply_event(), then the companion SET also have so
we don't need to reset_one_shot_variables().
*/
if (rpl_filter->db_ok(thd->db.str))
{
thd->set_time(when, when_sec_part);
thd->set_query_id(next_query_id());
thd->get_stmt_da()->opt_clear_warning_info(thd->query_id);
TABLE_LIST tables;
LEX_CSTRING db_name= { thd->strmake(thd->db.str, thd->db.length), thd->db.length };
if (lower_case_table_names)
my_casedn_str(system_charset_info, (char *)table_name);
LEX_CSTRING tbl_name= { table_name, strlen(table_name) };
tables.init_one_table(&db_name, &tbl_name, 0, TL_WRITE);
tables.updating= 1;
// the table will be opened in mysql_load
if (rpl_filter->is_on() && !rpl_filter->tables_ok(thd->db.str, &tables))
{
// TODO: this is a bug - this needs to be moved to the I/O thread
if (net)
skip_load_data_infile(net);
}
else
{
enum enum_duplicates handle_dup;
bool ignore= 0;
char query_buffer[1024];
String query_str(query_buffer, sizeof(query_buffer), system_charset_info);
char *load_data_query;
query_str.length(0);
/*
Forge LOAD DATA INFILE query which will be used in SHOW PROCESS LIST
and written to slave's binlog if binlogging is on.
*/
print_query(thd, FALSE, NULL, &query_str, NULL, NULL, NULL);
if (!(load_data_query= (char *)thd->strmake(query_str.ptr(),
query_str.length())))
{
/*
This will set thd->fatal_error in case of OOM. So we surely will notice
that something is wrong.
*/
goto error;
}
thd->set_query(load_data_query, (uint) (query_str.length()));
if (sql_ex.opt_flags & REPLACE_FLAG)
handle_dup= DUP_REPLACE;
else if (sql_ex.opt_flags & IGNORE_FLAG)
{
ignore= 1;
handle_dup= DUP_ERROR;
}
else
{
/*
When replication is running fine, if it was DUP_ERROR on the
master then we could choose IGNORE here, because if DUP_ERROR
suceeded on master, and data is identical on the master and slave,
then there should be no uniqueness errors on slave, so IGNORE is
the same as DUP_ERROR. But in the unlikely case of uniqueness errors
(because the data on the master and slave happen to be different
(user error or bug), we want LOAD DATA to print an error message on
the slave to discover the problem.
If reading from net (a 3.23 master), mysql_load() will change this
to IGNORE.
*/
handle_dup= DUP_ERROR;
}
/*
We need to set thd->lex->sql_command and thd->lex->duplicates
since InnoDB tests these variables to decide if this is a LOAD
DATA ... REPLACE INTO ... statement even though mysql_parse()
is not called. This is not needed in 5.0 since there the LOAD
DATA ... statement is replicated using mysql_parse(), which
sets the thd->lex fields correctly.
*/
thd->lex->sql_command= SQLCOM_LOAD;
thd->lex->duplicates= handle_dup;
sql_exchange ex((char*)fname, sql_ex.opt_flags & DUMPFILE_FLAG);
String field_term(sql_ex.field_term,sql_ex.field_term_len,log_cs);
String enclosed(sql_ex.enclosed,sql_ex.enclosed_len,log_cs);
String line_term(sql_ex.line_term,sql_ex.line_term_len,log_cs);
String line_start(sql_ex.line_start,sql_ex.line_start_len,log_cs);
String escaped(sql_ex.escaped,sql_ex.escaped_len, log_cs);
ex.field_term= &field_term;
ex.enclosed= &enclosed;
ex.line_term= &line_term;
ex.line_start= &line_start;
ex.escaped= &escaped;
ex.opt_enclosed = (sql_ex.opt_flags & OPT_ENCLOSED_FLAG);
if (sql_ex.empty_flags & FIELD_TERM_EMPTY)
ex.field_term->length(0);
ex.skip_lines = skip_lines;
List<Item> field_list;
thd->lex->first_select_lex()->context.resolve_in_table_list_only(&tables);
set_fields(tables.db.str,
field_list, &thd->lex->first_select_lex()->context);
thd->variables.pseudo_thread_id= thread_id;
if (net)
{
// mysql_load will use thd->net to read the file
thd->net.vio = net->vio;
// Make sure the client does not get confused about the packet sequence
thd->net.pkt_nr = net->pkt_nr;
}
/*
It is safe to use tmp_list twice because we are not going to
update it inside mysql_load().
*/
List<Item> tmp_list;
if (thd->open_temporary_tables(&tables) ||
mysql_load(thd, &ex, &tables, field_list, tmp_list, tmp_list,
handle_dup, ignore, net != 0))
thd->is_slave_error= 1;
if (thd->cuted_fields)
{
/* log_pos is the position of the LOAD event in the master log */
sql_print_warning("Slave: load data infile on table '%s' at "
"log position %llu in log '%s' produced %ld "
"warning(s). Default database: '%s'",
(char*) table_name, log_pos, RPL_LOG_NAME,
(ulong) thd->cuted_fields,
thd->get_db());
}
if (net)
net->pkt_nr= thd->net.pkt_nr;
}
}
else
{
/*
We will just ask the master to send us /dev/null if we do not
want to load the data.
TODO: this a bug - needs to be done in I/O thread
*/
if (net)
skip_load_data_infile(net);
}
error:
thd->net.vio = 0;
const char *remember_db= thd->get_db();
thd->catalog= 0;
thd->set_db(&null_clex_str); /* will free the current database */
thd->reset_query();
thd->get_stmt_da()->set_overwrite_status(true);
thd->is_error() ? trans_rollback_stmt(thd) : trans_commit_stmt(thd);
thd->variables.option_bits&= ~(OPTION_BEGIN | OPTION_GTID_BEGIN);
thd->get_stmt_da()->set_overwrite_status(false);
close_thread_tables(thd);
/*
- If transaction rollback was requested due to deadlock
perform it and release metadata locks.
- If inside a multi-statement transaction,
defer the release of metadata locks until the current
transaction is either committed or rolled back. This prevents
other statements from modifying the table for the entire
duration of this transaction. This provides commit ordering
and guarantees serializability across multiple transactions.
- If in autocommit mode, or outside a transactional context,
automatically release metadata locks of the current statement.
*/
if (thd->transaction_rollback_request)
{
trans_rollback_implicit(thd);
thd->release_transactional_locks();
}
else if (! thd->in_multi_stmt_transaction_mode())
thd->release_transactional_locks();
else
thd->mdl_context.release_statement_locks();
DBUG_EXECUTE_IF("LOAD_DATA_INFILE_has_fatal_error",
thd->is_slave_error= 0; thd->is_fatal_error= 1;);
if (unlikely(thd->is_slave_error))
{
/* this err/sql_errno code is copy-paste from net_send_error() */
const char *err;
int sql_errno;
if (thd->is_error())
{
err= thd->get_stmt_da()->message();
sql_errno= thd->get_stmt_da()->sql_errno();
}
else
{
sql_errno=ER_UNKNOWN_ERROR;
err= ER_THD(thd, sql_errno);
}
rli->report(ERROR_LEVEL, sql_errno, rgi->gtid_info(), "\
Error '%s' running LOAD DATA INFILE on table '%s'. Default database: '%s'",
err, (char*)table_name, remember_db);
free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
DBUG_RETURN(1);
}
free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
if (unlikely(thd->is_fatal_error))
{
char buf[256];
my_snprintf(buf, sizeof(buf),
"Running LOAD DATA INFILE on table '%-.64s'."
" Default database: '%-.64s'",
(char*)table_name,
remember_db);
rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR, rgi->gtid_info(),
ER_THD(thd, ER_SLAVE_FATAL_ERROR), buf);
DBUG_RETURN(1);
}
DBUG_RETURN( use_rli_only_for_errors ? 0 : Log_event::do_apply_event(rgi) );
}
#endif
/**************************************************************************
Rotate_log_event methods
**************************************************************************/
#if defined(HAVE_REPLICATION)
void Rotate_log_event::pack_info(Protocol *protocol)
{
StringBuffer<256> tmp(log_cs);
tmp.length(0);
tmp.append(new_log_ident, ident_len);
tmp.append(STRING_WITH_LEN(";pos="));
tmp.append_ulonglong(pos);
protocol->store(tmp.ptr(), tmp.length(), &my_charset_bin);
}
#endif
Rotate_log_event::Rotate_log_event(const char* new_log_ident_arg,
uint ident_len_arg, ulonglong pos_arg,
uint flags_arg)
:Log_event(), new_log_ident(new_log_ident_arg),
pos(pos_arg),ident_len(ident_len_arg ? ident_len_arg :
(uint) strlen(new_log_ident_arg)), flags(flags_arg)
{
DBUG_ENTER("Rotate_log_event::Rotate_log_event(...,flags)");
DBUG_PRINT("enter",("new_log_ident: %s pos: %llu flags: %lu", new_log_ident_arg,
pos_arg, (ulong) flags));
cache_type= EVENT_NO_CACHE;
if (flags & DUP_NAME)
new_log_ident= my_strndup(PSI_INSTRUMENT_ME, new_log_ident_arg, ident_len, MYF(MY_WME));
if (flags & RELAY_LOG)
set_relay_log_event();
DBUG_VOID_RETURN;
}
bool Rotate_log_event::write()
{
char buf[ROTATE_HEADER_LEN];
int8store(buf + R_POS_OFFSET, pos);
return (write_header(ROTATE_HEADER_LEN + ident_len) ||
write_data(buf, ROTATE_HEADER_LEN) ||
write_data(new_log_ident, (uint) ident_len) ||
write_footer());
}
#if defined(HAVE_REPLICATION)
/*
Got a rotate log event from the master.
This is mainly used so that we can later figure out the logname and
position for the master.
We can't rotate the slave's BINlog as this will cause infinitive rotations
in a A -> B -> A setup.
The NOTES below is a wrong comment which will disappear when 4.1 is merged.
This must only be called from the Slave SQL thread, since it calls
Relay_log_info::flush().
@retval
0 ok
1 error
*/
int Rotate_log_event::do_update_pos(rpl_group_info *rgi)
{
int error= 0;
Relay_log_info *rli= rgi->rli;
DBUG_ENTER("Rotate_log_event::do_update_pos");
DBUG_PRINT("info", ("server_id=%lu; ::server_id=%lu",
(ulong) this->server_id, (ulong) global_system_variables.server_id));
DBUG_PRINT("info", ("new_log_ident: %s", this->new_log_ident));
DBUG_PRINT("info", ("pos: %llu", this->pos));
/*
If we are in a transaction or in a group: the only normal case is
when the I/O thread was copying a big transaction, then it was
stopped and restarted: we have this in the relay log:
BEGIN
...
ROTATE (a fake one)
...
COMMIT or ROLLBACK
In that case, we don't want to touch the coordinates which
correspond to the beginning of the transaction. Starting from
5.0.0, there also are some rotates from the slave itself, in the
relay log, which shall not change the group positions.
In parallel replication, rotate event is executed out-of-band with normal
events, so we cannot update group_master_log_name or _pos here, it will
be updated with the next normal event instead.
*/
if ((server_id != global_system_variables.server_id ||
rli->replicate_same_server_id) &&
!is_relay_log_event() &&
!rli->is_in_group() &&
!rgi->is_parallel_exec)
{
mysql_mutex_lock(&rli->data_lock);
DBUG_PRINT("info", ("old group_master_log_name: '%s' "
"old group_master_log_pos: %lu",
rli->group_master_log_name,
(ulong) rli->group_master_log_pos));
memcpy(rli->group_master_log_name, new_log_ident, ident_len+1);
rli->notify_group_master_log_name_update();
rli->inc_group_relay_log_pos(pos, rgi, TRUE /* skip_lock */);
DBUG_PRINT("info", ("new group_master_log_name: '%s' "
"new group_master_log_pos: %lu",
rli->group_master_log_name,
(ulong) rli->group_master_log_pos));
mysql_mutex_unlock(&rli->data_lock);
rpl_global_gtid_slave_state->record_and_update_gtid(thd, rgi);
error= rli->flush();
/*
Reset thd->variables.option_bits and sql_mode etc, because this could
be the signal of a master's downgrade from 5.0 to 4.0.
However, no need to reset description_event_for_exec: indeed, if the next
master is 5.0 (even 5.0.1) we will soon get a Format_desc; if the next
master is 4.0 then the events are in the slave's format (conversion).
*/
set_slave_thread_options(thd);
set_slave_thread_default_charset(thd, rgi);
thd->variables.sql_mode= global_system_variables.sql_mode;
thd->variables.auto_increment_increment=
thd->variables.auto_increment_offset= 1;
}
else
rgi->inc_event_relay_log_pos();
DBUG_RETURN(error);
}
Log_event::enum_skip_reason
Rotate_log_event::do_shall_skip(rpl_group_info *rgi)
{
enum_skip_reason reason= Log_event::do_shall_skip(rgi);
switch (reason) {
case Log_event::EVENT_SKIP_NOT:
case Log_event::EVENT_SKIP_COUNT:
return Log_event::EVENT_SKIP_NOT;
case Log_event::EVENT_SKIP_IGNORE:
return Log_event::EVENT_SKIP_IGNORE;
}
DBUG_ASSERT(0);
return Log_event::EVENT_SKIP_NOT; // To keep compiler happy
}
#endif
/**************************************************************************
Binlog_checkpoint_log_event methods
**************************************************************************/
#if defined(HAVE_REPLICATION)
void Binlog_checkpoint_log_event::pack_info(Protocol *protocol)
{
protocol->store(binlog_file_name, binlog_file_len, &my_charset_bin);
}
Log_event::enum_skip_reason
Binlog_checkpoint_log_event::do_shall_skip(rpl_group_info *rgi)
{
enum_skip_reason reason= Log_event::do_shall_skip(rgi);
if (reason == EVENT_SKIP_COUNT)
reason= EVENT_SKIP_NOT;
return reason;
}
#endif
Binlog_checkpoint_log_event::Binlog_checkpoint_log_event(
const char *binlog_file_name_arg,
uint binlog_file_len_arg)
:Log_event(),
binlog_file_name(my_strndup(PSI_INSTRUMENT_ME, binlog_file_name_arg, binlog_file_len_arg,
MYF(MY_WME))),
binlog_file_len(binlog_file_len_arg)
{
cache_type= EVENT_NO_CACHE;
}
bool Binlog_checkpoint_log_event::write()
{
uchar buf[BINLOG_CHECKPOINT_HEADER_LEN];
int4store(buf, binlog_file_len);
return write_header(BINLOG_CHECKPOINT_HEADER_LEN + binlog_file_len) ||
write_data(buf, BINLOG_CHECKPOINT_HEADER_LEN) ||
write_data(binlog_file_name, binlog_file_len) ||
write_footer();
}
/**************************************************************************
Global transaction ID stuff
**************************************************************************/
Gtid_log_event::Gtid_log_event(THD *thd_arg, uint64 seq_no_arg,
uint32 domain_id_arg, bool standalone,
uint16 flags_arg, bool is_transactional,
uint64 commit_id_arg, bool has_xid,
bool ro_1pc)
: Log_event(thd_arg, flags_arg, is_transactional),
seq_no(seq_no_arg), commit_id(commit_id_arg), domain_id(domain_id_arg),
flags2((standalone ? FL_STANDALONE : 0) |
(commit_id_arg ? FL_GROUP_COMMIT_ID : 0)),
flags_extra(0), extra_engines(0)
{
cache_type= Log_event::EVENT_NO_CACHE;
bool is_tmp_table= thd_arg->lex->stmt_accessed_temp_table();
if (thd_arg->transaction->stmt.trans_did_wait() ||
thd_arg->transaction->all.trans_did_wait())
flags2|= FL_WAITED;
if (thd_arg->transaction->stmt.trans_did_ddl() ||
thd_arg->transaction->stmt.has_created_dropped_temp_table() ||
thd_arg->transaction->stmt.trans_executed_admin_cmd() ||
thd_arg->transaction->all.trans_did_ddl() ||
thd_arg->transaction->all.has_created_dropped_temp_table() ||
thd_arg->transaction->all.trans_executed_admin_cmd())
flags2|= FL_DDL;
else if (is_transactional && !is_tmp_table &&
!(thd_arg->transaction->all.modified_non_trans_table &&
thd->variables.binlog_direct_non_trans_update == 0 &&
!thd->is_current_stmt_binlog_format_row()))
flags2|= FL_TRANSACTIONAL;
if (!(thd_arg->variables.option_bits & OPTION_RPL_SKIP_PARALLEL))
flags2|= FL_ALLOW_PARALLEL;
/* Preserve any DDL or WAITED flag in the slave's binlog. */
if (thd_arg->rgi_slave)
flags2|= (thd_arg->rgi_slave->gtid_ev_flags2 & (FL_DDL|FL_WAITED));
XID_STATE &xid_state= thd->transaction->xid_state;
if (is_transactional)
{
if (xid_state.is_explicit_XA() &&
(thd->lex->sql_command == SQLCOM_XA_PREPARE ||
xid_state.get_state_code() == XA_PREPARED))
{
DBUG_ASSERT(!(thd->lex->sql_command == SQLCOM_XA_COMMIT &&
thd->lex->xa_opt == XA_ONE_PHASE));
flags2|= thd->lex->sql_command == SQLCOM_XA_PREPARE ?
FL_PREPARED_XA : FL_COMPLETED_XA;
xid.set(xid_state.get_xid());
}
/* count non-zero extra recoverable engines; total = extra + 1 */
if (has_xid)
{
DBUG_ASSERT(ha_count_rw_2pc(thd_arg,
thd_arg->in_multi_stmt_transaction_mode()));
extra_engines=
ha_count_rw_2pc(thd_arg, thd_arg->in_multi_stmt_transaction_mode()) - 1;
}
else if (ro_1pc)
{
extra_engines= UCHAR_MAX;
}
else if (thd->lex->sql_command == SQLCOM_XA_PREPARE)
{
DBUG_ASSERT(thd_arg->in_multi_stmt_transaction_mode());
uint8 count= ha_count_rw_2pc(thd_arg, true);
extra_engines= count > 1 ? 0 : UCHAR_MAX;
}
if (extra_engines > 0)
flags_extra|= FL_EXTRA_MULTI_ENGINE;
}
DBUG_ASSERT(thd_arg->lex->sql_command != SQLCOM_CREATE_SEQUENCE ||
(flags2 & FL_DDL) || thd_arg->in_multi_stmt_transaction_mode());
}
/*
Used to record GTID while sending binlog to slave, without having to
fully contruct every Gtid_log_event() needlessly.
*/
bool
Gtid_log_event::peek(const uchar *event_start, size_t event_len,
enum enum_binlog_checksum_alg checksum_alg,
uint32 *domain_id, uint32 *server_id, uint64 *seq_no,
uchar *flags2, const Format_description_log_event *fdev)
{
const uchar *p;
if (checksum_alg == BINLOG_CHECKSUM_ALG_CRC32)
{
if (event_len > BINLOG_CHECKSUM_LEN)
event_len-= BINLOG_CHECKSUM_LEN;
else
event_len= 0;
}
else
DBUG_ASSERT(checksum_alg == BINLOG_CHECKSUM_ALG_UNDEF ||
checksum_alg == BINLOG_CHECKSUM_ALG_OFF);
if (event_len < (uint32)fdev->common_header_len + GTID_HEADER_LEN)
return true;
*server_id= uint4korr(event_start + SERVER_ID_OFFSET);
p= event_start + fdev->common_header_len;
*seq_no= uint8korr(p);
p+= 8;
*domain_id= uint4korr(p);
p+= 4;
*flags2= *p;
return false;
}
bool
Gtid_log_event::write()
{
uchar buf[GTID_HEADER_LEN+2+sizeof(XID) + /* flags_extra: */ 1+4];
size_t write_len= 13;
int8store(buf, seq_no);
int4store(buf+8, domain_id);
buf[12]= flags2;
if (flags2 & FL_GROUP_COMMIT_ID)
{
DBUG_ASSERT(write_len + 8 == GTID_HEADER_LEN + 2);
int8store(buf+write_len, commit_id);
write_len= GTID_HEADER_LEN + 2;
}
if (flags2 & (FL_PREPARED_XA | FL_COMPLETED_XA)
#ifndef DBUG_OFF
&& DBUG_EVALUATE_IF("negate_xid_from_gtid", 0, 1)
#endif
)
{
int4store(&buf[write_len], xid.formatID);
buf[write_len +4]= (uchar) xid.gtrid_length;
buf[write_len +4+1]= (uchar) xid.bqual_length;
write_len+= 6;
long data_length= xid.bqual_length + xid.gtrid_length;
#ifndef DBUG_OFF
if (DBUG_EVALUATE_IF("negate_xid_data_from_gtid", 0, 1))
{
#endif
memcpy(buf+write_len, xid.data, data_length);
write_len+= data_length;
#ifndef DBUG_OFF
}
#endif
}
DBUG_EXECUTE_IF("inject_fl_extra_multi_engine_into_gtid", {
flags_extra|= FL_EXTRA_MULTI_ENGINE;
});
if (flags_extra > 0)
{
buf[write_len]= flags_extra;
write_len++;
}
DBUG_EXECUTE_IF("inject_fl_extra_multi_engine_into_gtid", {
flags_extra&= ~FL_EXTRA_MULTI_ENGINE;
});
if (flags_extra & FL_EXTRA_MULTI_ENGINE)
{
buf[write_len]= extra_engines;
write_len++;
}
if (write_len < GTID_HEADER_LEN)
{
bzero(buf+write_len, GTID_HEADER_LEN-write_len);
write_len= GTID_HEADER_LEN;
}
return write_header(write_len) ||
write_data(buf, write_len) ||
write_footer();
}
/*
Replace a GTID event with either a BEGIN event, dummy event, or nothing, as
appropriate to work with old slave that does not know global transaction id.
The need_dummy_event argument is an IN/OUT argument. It is passed as TRUE
if slave has capability lower than MARIA_SLAVE_CAPABILITY_TOLERATE_HOLES.
It is returned TRUE if we return a BEGIN (or dummy) event to be sent to the
slave, FALSE if event should be skipped completely.
*/
int
Gtid_log_event::make_compatible_event(String *packet, bool *need_dummy_event,
ulong ev_offset,
enum enum_binlog_checksum_alg checksum_alg)
{
uchar flags2;
if (packet->length() - ev_offset < LOG_EVENT_HEADER_LEN + GTID_HEADER_LEN)
return 1;
flags2= (*packet)[ev_offset + LOG_EVENT_HEADER_LEN + 12];
if (flags2 & FL_STANDALONE)
{
if (*need_dummy_event)
return Query_log_event::dummy_event(packet, ev_offset, checksum_alg);
return 0;
}
*need_dummy_event= true;
return Query_log_event::begin_event(packet, ev_offset, checksum_alg);
}
#ifdef HAVE_REPLICATION
void
Gtid_log_event::pack_info(Protocol *protocol)
{
char buf[6+5+10+1+10+1+20+1+4+20+1+ ser_buf_size+5 /* sprintf */];
char *p;
p = strmov(buf, (flags2 & FL_STANDALONE ? "GTID " :
flags2 & FL_PREPARED_XA ? "XA START " : "BEGIN GTID "));
if (flags2 & FL_PREPARED_XA)
{
p+= sprintf(p, "%s GTID ", xid.serialize());
}
p= longlong10_to_str(domain_id, p, 10);
*p++= '-';
p= longlong10_to_str(server_id, p, 10);
*p++= '-';
p= longlong10_to_str(seq_no, p, 10);
if (flags2 & FL_GROUP_COMMIT_ID)
{
p= strmov(p, " cid=");
p= longlong10_to_str(commit_id, p, 10);
}
protocol->store(buf, p-buf, &my_charset_bin);
}
static char gtid_begin_string[] = "BEGIN";
int
Gtid_log_event::do_apply_event(rpl_group_info *rgi)
{
ulonglong bits= thd->variables.option_bits;
thd->variables.server_id= this->server_id;
thd->variables.gtid_domain_id= this->domain_id;
thd->variables.gtid_seq_no= this->seq_no;
rgi->gtid_ev_flags2= flags2;
thd->reset_for_next_command();
if (opt_gtid_strict_mode && opt_bin_log && opt_log_slave_updates)
{
if (mysql_bin_log.check_strict_gtid_sequence(this->domain_id,
this->server_id, this->seq_no))
return 1;
}
DBUG_ASSERT((bits & OPTION_GTID_BEGIN) == 0);
Master_info *mi=rgi->rli->mi;
switch (flags2 & (FL_DDL | FL_TRANSACTIONAL))
{
case FL_TRANSACTIONAL:
mi->total_trans_groups++;
break;
case FL_DDL:
mi->total_ddl_groups++;
break;
default:
mi->total_non_trans_groups++;
}
if (flags2 & FL_STANDALONE)
return 0;
/* Execute this like a BEGIN query event. */
bits|= OPTION_GTID_BEGIN;
if (flags2 & FL_ALLOW_PARALLEL)
bits&= ~(ulonglong)OPTION_RPL_SKIP_PARALLEL;
else
bits|= (ulonglong)OPTION_RPL_SKIP_PARALLEL;
thd->variables.option_bits= bits;
DBUG_PRINT("info", ("Set OPTION_GTID_BEGIN"));
thd->is_slave_error= 0;
char buf_xa[sizeof("XA START") + 1 + ser_buf_size];
if (flags2 & FL_PREPARED_XA)
{
const char fmt[]= "XA START %s";
thd->lex->xid= &xid;
thd->lex->xa_opt= XA_NONE;
sprintf(buf_xa, fmt, xid.serialize());
thd->set_query_and_id(buf_xa, static_cast<uint32>(strlen(buf_xa)),
&my_charset_bin, next_query_id());
thd->lex->sql_command= SQLCOM_XA_START;
if (trans_xa_start(thd))
{
DBUG_PRINT("error", ("trans_xa_start() failed"));
thd->is_slave_error= 1;
}
}
else
{
thd->set_query_and_id(gtid_begin_string, sizeof(gtid_begin_string)-1,
&my_charset_bin, next_query_id());
thd->lex->sql_command= SQLCOM_BEGIN;
if (trans_begin(thd, 0))
{
DBUG_PRINT("error", ("trans_begin() failed"));
thd->is_slave_error= 1;
}
}
status_var_increment(thd->status_var.com_stat[thd->lex->sql_command]);
thd->update_stats();
if (likely(!thd->is_slave_error))
general_log_write(thd, COM_QUERY, thd->query(), thd->query_length());
thd->reset_query();
free_root(thd->mem_root,MYF(MY_KEEP_PREALLOC));
return thd->is_slave_error;
}
int
Gtid_log_event::do_update_pos(rpl_group_info *rgi)
{
rgi->inc_event_relay_log_pos();
return 0;
}
Log_event::enum_skip_reason
Gtid_log_event::do_shall_skip(rpl_group_info *rgi)
{
Relay_log_info *rli= rgi->rli;
/*
An event skipped due to @@skip_replication must not be counted towards the
number of events to be skipped due to @@sql_slave_skip_counter.
*/
if (flags & LOG_EVENT_SKIP_REPLICATION_F &&
opt_replicate_events_marked_for_skip != RPL_SKIP_REPLICATE)
return Log_event::EVENT_SKIP_IGNORE;
if (rli->slave_skip_counter > 0)
{
if (!(flags2 & FL_STANDALONE))
{
thd->variables.option_bits|= OPTION_BEGIN;
DBUG_ASSERT(rgi->rli->get_flag(Relay_log_info::IN_TRANSACTION));
}
return Log_event::continue_group(rgi);
}
return Log_event::do_shall_skip(rgi);
}
#endif /* HAVE_REPLICATION */
Gtid_list_log_event::Gtid_list_log_event(rpl_binlog_state *gtid_set,
uint32 gl_flags_)
: count(gtid_set->count()), gl_flags(gl_flags_), list(0), sub_id_list(0)
{
cache_type= EVENT_NO_CACHE;
/* Failure to allocate memory will be caught by is_valid() returning false. */
if (count < (1<<28) &&
(list = (rpl_gtid *)my_malloc(PSI_INSTRUMENT_ME,
count * sizeof(*list) + (count == 0), MYF(MY_WME))))
gtid_set->get_gtid_list(list, count);
}
Gtid_list_log_event::Gtid_list_log_event(slave_connection_state *gtid_set,
uint32 gl_flags_)
: count(gtid_set->count()), gl_flags(gl_flags_), list(0), sub_id_list(0)
{
cache_type= EVENT_NO_CACHE;
/* Failure to allocate memory will be caught by is_valid() returning false. */
if (count < (1<<28) &&
(list = (rpl_gtid *)my_malloc(PSI_INSTRUMENT_ME,
count * sizeof(*list) + (count == 0), MYF(MY_WME))))
{
gtid_set->get_gtid_list(list, count);
#if defined(HAVE_REPLICATION)
if (gl_flags & FLAG_IGN_GTIDS)
{
uint32 i;
if (!(sub_id_list= (uint64 *)my_malloc(PSI_INSTRUMENT_ME,
count * sizeof(uint64), MYF(MY_WME))))
{
my_free(list);
list= NULL;
return;
}
for (i= 0; i < count; ++i)
{
if (!(sub_id_list[i]=
rpl_global_gtid_slave_state->next_sub_id(list[i].domain_id)))
{
my_free(list);
my_free(sub_id_list);
list= NULL;
sub_id_list= NULL;
return;
}
}
}
#endif
}
}
#if defined(HAVE_REPLICATION)
bool
Gtid_list_log_event::to_packet(String *packet)
{
uint32 i;
uchar *p;
uint32 needed_length;
DBUG_ASSERT(count < 1<<28);
needed_length= packet->length() + get_data_size();
if (packet->reserve(needed_length))
return true;
p= (uchar *)packet->ptr() + packet->length();;
packet->length(needed_length);
int4store(p, (count & ((1<<28)-1)) | gl_flags);
p += 4;
/* Initialise the padding for empty Gtid_list. */
if (count == 0)
int2store(p, 0);
for (i= 0; i < count; ++i)
{
int4store(p, list[i].domain_id);
int4store(p+4, list[i].server_id);
int8store(p+8, list[i].seq_no);
p += 16;
}
return false;
}
bool
Gtid_list_log_event::write()
{
char buf[128];
String packet(buf, sizeof(buf), system_charset_info);
packet.length(0);
if (to_packet(&packet))
return true;
return write_header(get_data_size()) ||
write_data(packet.ptr(), packet.length()) ||
write_footer();
}
int
Gtid_list_log_event::do_apply_event(rpl_group_info *rgi)
{
Relay_log_info *rli= const_cast<Relay_log_info*>(rgi->rli);
int ret;
if (gl_flags & FLAG_IGN_GTIDS)
{
void *hton= NULL;
uint32 i;
for (i= 0; i < count; ++i)
{
if ((ret= rpl_global_gtid_slave_state->record_gtid(thd, &list[i],
sub_id_list[i],
false, false, &hton)))
return ret;
rpl_global_gtid_slave_state->update_state_hash(sub_id_list[i], &list[i],
hton, NULL);
}
}
ret= Log_event::do_apply_event(rgi);
if (rli->until_condition == Relay_log_info::UNTIL_GTID &&
(gl_flags & FLAG_UNTIL_REACHED))
{
char str_buf[128];
String str(str_buf, sizeof(str_buf), system_charset_info);
rli->until_gtid_pos.to_string(&str);
sql_print_information("Slave SQL thread stops because it reached its"
" UNTIL master_gtid_pos %s", str.c_ptr_safe());
rli->abort_slave= true;
rli->stop_for_until= true;
}
free_root(thd->mem_root, MYF(MY_KEEP_PREALLOC));
return ret;
}
Log_event::enum_skip_reason
Gtid_list_log_event::do_shall_skip(rpl_group_info *rgi)
{
enum_skip_reason reason= Log_event::do_shall_skip(rgi);
if (reason == EVENT_SKIP_COUNT)
reason= EVENT_SKIP_NOT;
return reason;
}
void
Gtid_list_log_event::pack_info(Protocol *protocol)
{
char buf_mem[1024];
String buf(buf_mem, sizeof(buf_mem), system_charset_info);
uint32 i;
bool first;
buf.length(0);
buf.append(STRING_WITH_LEN("["));
first= true;
for (i= 0; i < count; ++i)
rpl_slave_state_tostring_helper(&buf, &list[i], &first);
buf.append(STRING_WITH_LEN("]"));
protocol->store(&buf);
}
#endif /* HAVE_REPLICATION */
/**************************************************************************
Intvar_log_event methods
**************************************************************************/
#if defined(HAVE_REPLICATION)
void Intvar_log_event::pack_info(Protocol *protocol)
{
char buf[256], *pos;
pos= strmake(buf, get_var_type_name(), sizeof(buf)-23);
*pos++= '=';
pos= longlong10_to_str(val, pos, -10);
protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
}
#endif
bool Intvar_log_event::write()
{
uchar buf[9];
buf[I_TYPE_OFFSET]= (uchar) type;
int8store(buf + I_VAL_OFFSET, val);
return write_header(sizeof(buf)) ||
write_data(buf, sizeof(buf)) ||
write_footer();
}
#if defined(HAVE_REPLICATION)
/*
Intvar_log_event::do_apply_event()
*/
int Intvar_log_event::do_apply_event(rpl_group_info *rgi)
{
DBUG_ENTER("Intvar_log_event::do_apply_event");
if (rgi->deferred_events_collecting)
{
DBUG_PRINT("info",("deferring event"));
DBUG_RETURN(rgi->deferred_events->add(this));
}
switch (type) {
case LAST_INSERT_ID_EVENT:
thd->first_successful_insert_id_in_prev_stmt= val;
DBUG_PRINT("info",("last_insert_id_event: %ld", (long) val));
break;
case INSERT_ID_EVENT:
thd->force_one_auto_inc_interval(val);
break;
}
DBUG_RETURN(0);
}
int Intvar_log_event::do_update_pos(rpl_group_info *rgi)
{
rgi->inc_event_relay_log_pos();
return 0;
}
Log_event::enum_skip_reason
Intvar_log_event::do_shall_skip(rpl_group_info *rgi)
{
/*
It is a common error to set the slave skip counter to 1 instead of
2 when recovering from an insert which used a auto increment,
rand, or user var. Therefore, if the slave skip counter is 1, we
just say that this event should be skipped by ignoring it, meaning
that we do not change the value of the slave skip counter since it
will be decreased by the following insert event.
*/
return continue_group(rgi);
}
#endif
/**************************************************************************
Rand_log_event methods
**************************************************************************/
#if defined(HAVE_REPLICATION)
void Rand_log_event::pack_info(Protocol *protocol)
{
char buf1[256], *pos;
pos= strmov(buf1,"rand_seed1=");
pos= int10_to_str((long) seed1, pos, 10);
pos= strmov(pos, ",rand_seed2=");
pos= int10_to_str((long) seed2, pos, 10);
protocol->store(buf1, (uint) (pos-buf1), &my_charset_bin);
}
#endif
bool Rand_log_event::write()
{
uchar buf[16];
int8store(buf + RAND_SEED1_OFFSET, seed1);
int8store(buf + RAND_SEED2_OFFSET, seed2);
return write_header(sizeof(buf)) ||
write_data(buf, sizeof(buf)) ||
write_footer();
}
#if defined(HAVE_REPLICATION)
int Rand_log_event::do_apply_event(rpl_group_info *rgi)
{
if (rgi->deferred_events_collecting)
return rgi->deferred_events->add(this);
thd->rand.seed1= (ulong) seed1;
thd->rand.seed2= (ulong) seed2;
return 0;
}
int Rand_log_event::do_update_pos(rpl_group_info *rgi)
{
rgi->inc_event_relay_log_pos();
return 0;
}
Log_event::enum_skip_reason
Rand_log_event::do_shall_skip(rpl_group_info *rgi)
{
/*
It is a common error to set the slave skip counter to 1 instead of
2 when recovering from an insert which used a auto increment,
rand, or user var. Therefore, if the slave skip counter is 1, we
just say that this event should be skipped by ignoring it, meaning
that we do not change the value of the slave skip counter since it
will be decreased by the following insert event.
*/
return continue_group(rgi);
}
/**
Exec deferred Int-, Rand- and User- var events prefixing
a Query-log-event event.
@param thd THD handle
@return false on success, true if a failure in an event applying occurred.
*/
bool slave_execute_deferred_events(THD *thd)
{
bool res= false;
rpl_group_info *rgi= thd->rgi_slave;
DBUG_ASSERT(rgi && (!rgi->deferred_events_collecting || rgi->deferred_events));
if (!rgi->deferred_events_collecting || rgi->deferred_events->is_empty())
return res;
res= rgi->deferred_events->execute(rgi);
rgi->deferred_events->rewind();
return res;
}
#endif /* HAVE_REPLICATION */
/**************************************************************************
Xid_apply_log_event methods
**************************************************************************/
#if defined(HAVE_REPLICATION)
int Xid_apply_log_event::do_record_gtid(THD *thd, rpl_group_info *rgi,
bool in_trans, void **out_hton,
bool force_err)
{
int err= 0;
Relay_log_info const *rli= rgi->rli;
rgi->gtid_pending= false;
err= rpl_global_gtid_slave_state->record_gtid(thd, &rgi->current_gtid,
rgi->gtid_sub_id,
in_trans, false, out_hton);
if (unlikely(err))
{
int ec= thd->get_stmt_da()->sql_errno();
/*
Do not report an error if this is really a kill due to a deadlock.
In this case, the transaction will be re-tried instead. Unless force_err
is set, as in the case of XA PREPARE, as the GTID state is updated as a
separate transaction, and if that fails, we should not retry but exit in
error immediately.
*/
if (!is_parallel_retry_error(rgi, ec) || force_err)
{
char buff[MAX_SLAVE_ERRMSG];
buff[0]= 0;
aggregate_da_errors(buff, sizeof(buff), thd->get_stmt_da());
if (force_err)
thd->clear_error();
rli->report(ERROR_LEVEL, ER_CANNOT_UPDATE_GTID_STATE, rgi->gtid_info(),
"Error during XID COMMIT: failed to update GTID state in "
"%s.%s: %d: %s the event's master log %s, end_log_pos %llu",
"mysql", rpl_gtid_slave_state_table_name.str, ec,
buff, RPL_LOG_NAME, log_pos);
}
thd->is_slave_error= 1;
}
return err;
}
static bool wsrep_must_replay(THD *thd)
{
#ifdef WITH_WSREP
mysql_mutex_lock(&thd->LOCK_thd_data);
bool res= WSREP(thd) && thd->wsrep_trx().state() == wsrep::transaction::s_must_replay;
mysql_mutex_unlock(&thd->LOCK_thd_data);
return res;
#else
return false;
#endif
}
int Xid_apply_log_event::do_apply_event(rpl_group_info *rgi)
{
bool res;
int err;
uint64 sub_id= 0;
void *hton= NULL;
rpl_gtid gtid;
/*
An instance of this class such as XID_EVENT works like a COMMIT
statement. It updates mysql.gtid_slave_pos with the GTID of the
current transaction.
Therefore, it acts much like a normal SQL statement, so we need to do
THD::reset_for_next_command() as if starting a new statement.
XA_PREPARE_LOG_EVENT also updates the gtid table *but* the update gets
committed as separate "autocommit" transaction.
*/
thd->reset_for_next_command();
/*
Record any GTID in the same transaction, so slave state is transactionally
consistent.
*/
#ifdef WITH_WSREP
thd->wsrep_affected_rows= 0;
#endif
#ifndef DBUG_OFF
bool record_gtid_delayed_for_xa= false;
#endif
if (rgi->gtid_pending)
{
sub_id= rgi->gtid_sub_id;
gtid= rgi->current_gtid;
if (!thd->transaction->xid_state.is_explicit_XA())
{
if ((err= do_record_gtid(thd, rgi, true /* in_trans */, &hton)))
return err;
DBUG_EXECUTE_IF("gtid_fail_after_record_gtid",
{
my_error(ER_ERROR_DURING_COMMIT, MYF(0),
HA_ERR_WRONG_COMMAND);
thd->is_slave_error= 1;
return 1;
});
}
#ifndef DBUG_OFF
else
record_gtid_delayed_for_xa= true;
#endif
}
general_log_print(thd, COM_QUERY, "%s", get_query());
thd->variables.option_bits&= ~OPTION_GTID_BEGIN;
res= do_commit();
if (!res && rgi->gtid_pending)
{
DBUG_ASSERT(!thd->transaction->xid_state.is_explicit_XA());
DBUG_ASSERT(record_gtid_delayed_for_xa);
if (thd->rgi_slave->is_parallel_exec)
{
/*
With XA, since the transaction is prepared/committed without updating
the GTID pos (MDEV-32020...), we need here to clear any pending
deadlock kill.
Otherwise if the kill happened after the prepare/commit completed, it
might end up killing the subsequent GTID position update, causing the
slave to fail with error.
*/
wait_for_pending_deadlock_kill(thd, thd->rgi_slave);
thd->reset_killed();
}
if ((err= do_record_gtid(thd, rgi, false, &hton, true)))
return err;
}
if (sub_id && (!res || wsrep_must_replay(thd)))
rpl_global_gtid_slave_state->update_state_hash(sub_id, &gtid, hton, rgi);
/*
Increment the global status commit count variable
*/
enum enum_sql_command cmd= !thd->transaction->xid_state.is_explicit_XA()
? SQLCOM_COMMIT : SQLCOM_XA_PREPARE;
status_var_increment(thd->status_var.com_stat[cmd]);
return res;
}
Log_event::enum_skip_reason
Xid_apply_log_event::do_shall_skip(rpl_group_info *rgi)
{
DBUG_ENTER("Xid_apply_log_event::do_shall_skip");
if (rgi->rli->slave_skip_counter > 0)
{
DBUG_ASSERT(!rgi->rli->get_flag(Relay_log_info::IN_TRANSACTION));
thd->variables.option_bits&= ~(OPTION_BEGIN | OPTION_GTID_BEGIN);
DBUG_RETURN(Log_event::EVENT_SKIP_COUNT);
}
#ifdef WITH_WSREP
else if (wsrep_mysql_replication_bundle && WSREP(thd) &&
opt_slave_domain_parallel_threads == 0)
{
if (++thd->wsrep_mysql_replicated < (int)wsrep_mysql_replication_bundle)
{
WSREP_DEBUG("skipping wsrep commit %d", thd->wsrep_mysql_replicated);
DBUG_RETURN(Log_event::EVENT_SKIP_IGNORE);
}
else
{
thd->wsrep_mysql_replicated = 0;
}
}
#endif
DBUG_RETURN(Log_event::do_shall_skip(rgi));
}
#endif /* HAVE_REPLICATION */
/**************************************************************************
Xid_log_event methods
**************************************************************************/
#if defined(HAVE_REPLICATION)
void Xid_log_event::pack_info(Protocol *protocol)
{
char buf[128], *pos;
pos= strmov(buf, "COMMIT /* xid=");
pos= longlong10_to_str(xid, pos, 10);
pos= strmov(pos, " */");
protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
}
int Xid_log_event::do_commit()
{
bool res;
res= trans_commit(thd); /* Automatically rolls back on error. */
thd->release_transactional_locks();
return res;
}
#endif
bool Xid_log_event::write()
{
DBUG_EXECUTE_IF("do_not_write_xid", return 0;);
return write_header(sizeof(xid)) ||
write_data((uchar*)&xid, sizeof(xid)) ||
write_footer();
}
/**************************************************************************
XA_prepare_log_event methods
**************************************************************************/
#if defined(HAVE_REPLICATION)
void XA_prepare_log_event::pack_info(Protocol *protocol)
{
char query[sizeof("XA COMMIT ONE PHASE") + 1 + ser_buf_size];
sprintf(query,
(one_phase ? "XA COMMIT %s ONE PHASE" : "XA PREPARE %s"),
m_xid.serialize());
protocol->store(query, strlen(query), &my_charset_bin);
}
int XA_prepare_log_event::do_commit()
{
int res;
xid_t xid;
xid.set(m_xid.formatID,
m_xid.data, m_xid.gtrid_length,
m_xid.data + m_xid.gtrid_length, m_xid.bqual_length);
thd->lex->xid= &xid;
if (!one_phase)
{
if (thd->is_current_stmt_binlog_disabled() &&
(res= thd->wait_for_prior_commit()))
return res;
thd->lex->sql_command= SQLCOM_XA_PREPARE;
res= trans_xa_prepare(thd);
}
else
res= trans_xa_commit(thd);
return res;
}
#endif // HAVE_REPLICATION
bool XA_prepare_log_event::write()
{
uchar data[1 + 4 + 4 + 4]= {one_phase,};
uint8 one_phase_byte= one_phase;
int4store(data+1, static_cast<XID*>(xid)->formatID);
int4store(data+(1+4), static_cast<XID*>(xid)->gtrid_length);
int4store(data+(1+4+4), static_cast<XID*>(xid)->bqual_length);
DBUG_ASSERT(xid_subheader_no_data == sizeof(data) - 1);
return write_header(sizeof(one_phase_byte) + xid_subheader_no_data +
static_cast<XID*>(xid)->gtrid_length +
static_cast<XID*>(xid)->bqual_length) ||
write_data(data, sizeof(data)) ||
write_data((uchar*) static_cast<XID*>(xid)->data,
static_cast<XID*>(xid)->gtrid_length +
static_cast<XID*>(xid)->bqual_length) ||
write_footer();
}
/**************************************************************************
User_var_log_event methods
**************************************************************************/
#if defined(HAVE_REPLICATION)
static bool
user_var_append_name_part(THD *thd, String *buf,
const char *name, size_t name_len,
const LEX_CSTRING &data_type_name)
{
return buf->append('@') ||
append_identifier(thd, buf, name, name_len) ||
buf->append('=') ||
(data_type_name.length &&
(buf->append(STRING_WITH_LEN("/*")) ||
buf->append(data_type_name.str, data_type_name.length) ||
buf->append(STRING_WITH_LEN("*/"))));
}
void User_var_log_event::pack_info(Protocol* protocol)
{
if (is_null)
{
char buf_mem[FN_REFLEN+7];
String buf(buf_mem, sizeof(buf_mem), system_charset_info);
buf.length(0);
if (user_var_append_name_part(protocol->thd, &buf, name, name_len,
m_data_type_name) ||
buf.append(NULL_clex_str))
return;
protocol->store(buf.ptr(), buf.length(), &my_charset_bin);
}
else
{
switch (m_type) {
case REAL_RESULT:
{
double real_val;
char buf2[MY_GCVT_MAX_FIELD_WIDTH+1];
char buf_mem[FN_REFLEN + MY_GCVT_MAX_FIELD_WIDTH + 1];
String buf(buf_mem, sizeof(buf_mem), system_charset_info);
float8get(real_val, val);
buf.length(0);
if (user_var_append_name_part(protocol->thd, &buf, name, name_len,
m_data_type_name) ||
buf.append(buf2, my_gcvt(real_val, MY_GCVT_ARG_DOUBLE,
MY_GCVT_MAX_FIELD_WIDTH, buf2, NULL)))
return;
protocol->store(buf.ptr(), buf.length(), &my_charset_bin);
break;
}
case INT_RESULT:
{
char buf2[22];
char buf_mem[FN_REFLEN + 22];
String buf(buf_mem, sizeof(buf_mem), system_charset_info);
buf.length(0);
if (user_var_append_name_part(protocol->thd, &buf, name, name_len,
m_data_type_name) ||
buf.append(buf2,
longlong10_to_str(uint8korr(val), buf2,
(is_unsigned() ? 10 : -10))-buf2))
return;
protocol->store(buf.ptr(), buf.length(), &my_charset_bin);
break;
}
case DECIMAL_RESULT:
{
char buf_mem[FN_REFLEN + DECIMAL_MAX_STR_LENGTH];
String buf(buf_mem, sizeof(buf_mem), system_charset_info);
char buf2[DECIMAL_MAX_STR_LENGTH+1];
String str(buf2, sizeof(buf2), &my_charset_bin);
buf.length(0);
my_decimal((const uchar *) (val + 2), val[0], val[1]).to_string(&str);
if (user_var_append_name_part(protocol->thd, &buf, name, name_len,
m_data_type_name) ||
buf.append(str))
return;
protocol->store(buf.ptr(), buf.length(), &my_charset_bin);
break;
}
case STRING_RESULT:
{
/* 15 is for 'COLLATE' and other chars */
char buf_mem[FN_REFLEN + 512 + 1 + 2*MY_CS_NAME_SIZE+15];
String buf(buf_mem, sizeof(buf_mem), system_charset_info);
CHARSET_INFO *cs;
buf.length(0);
if (!(cs= get_charset(m_charset_number, MYF(0))))
{
if (buf.append(STRING_WITH_LEN("???")))
return;
}
else
{
size_t old_len;
char *beg, *end;
if (user_var_append_name_part(protocol->thd, &buf, name, name_len,
m_data_type_name) ||
buf.append('_') ||
buf.append(cs->cs_name) ||
buf.append(' '))
return;
old_len= buf.length();
if (buf.reserve(old_len + val_len * 2 + 3 + sizeof(" COLLATE ") +
MY_CS_NAME_SIZE))
return;
beg= const_cast<char *>(buf.ptr()) + old_len;
end= str_to_hex(beg, val, val_len);
buf.length(old_len + (end - beg));
if (buf.append(STRING_WITH_LEN(" COLLATE ")) ||
buf.append(cs->coll_name))
return;
}
protocol->store(buf.ptr(), buf.length(), &my_charset_bin);
break;
}
case ROW_RESULT:
default:
DBUG_ASSERT(0);
return;
}
}
}
#endif // HAVE_REPLICATION
bool User_var_log_event::write()
{
char buf[UV_NAME_LEN_SIZE];
char buf1[UV_VAL_IS_NULL + UV_VAL_TYPE_SIZE +
UV_CHARSET_NUMBER_SIZE + UV_VAL_LEN_SIZE];
uchar buf2[MY_MAX(8, DECIMAL_MAX_FIELD_SIZE + 2)], *pos= buf2;
uint unsigned_len= 0;
uint buf1_length;
size_t event_length;
int4store(buf, name_len);
if ((buf1[0]= is_null))
{
buf1_length= 1;
val_len= 0; // Length of 'pos'
}
else
{
buf1[1]= m_type;
int4store(buf1 + 2, m_charset_number);
switch (m_type) {
case REAL_RESULT:
float8store(buf2, *(double*) val);
break;
case INT_RESULT:
int8store(buf2, *(longlong*) val);
unsigned_len= 1;
break;
case DECIMAL_RESULT:
{
my_decimal *dec= (my_decimal *)val;
dec->fix_buffer_pointer();
buf2[0]= (char)(dec->intg + dec->frac);
buf2[1]= (char)dec->frac;
decimal2bin((decimal_t*)val, buf2+2, buf2[0], buf2[1]);
val_len= decimal_bin_size(buf2[0], buf2[1]) + 2;
break;
}
case STRING_RESULT:
pos= (uchar*) val;
break;
case ROW_RESULT:
default:
DBUG_ASSERT(0);
return 0;
}
int4store(buf1 + 2 + UV_CHARSET_NUMBER_SIZE, val_len);
buf1_length= 10;
}
uchar data_type_name_chunk_signature= (uchar) CHUNK_DATA_TYPE_NAME;
uint data_type_name_chunk_signature_length= m_data_type_name.length ? 1 : 0;
uchar data_type_name_length_length= m_data_type_name.length ? 1 : 0;
/* Length of the whole event */
event_length= sizeof(buf)+ name_len + buf1_length + val_len + unsigned_len +
data_type_name_chunk_signature_length +
data_type_name_length_length +
(uint) m_data_type_name.length;
uchar unsig= m_is_unsigned ? CHUNK_UNSIGNED : CHUNK_SIGNED;
uchar data_type_name_length= (uchar) m_data_type_name.length;
return write_header(event_length) ||
write_data(buf, sizeof(buf)) ||
write_data(name, name_len) ||
write_data(buf1, buf1_length) ||
write_data(pos, val_len) ||
write_data(&unsig, unsigned_len) ||
write_data(&data_type_name_chunk_signature,
data_type_name_chunk_signature_length) ||
write_data(&data_type_name_length, data_type_name_length_length) ||
write_data(m_data_type_name.str, (uint) m_data_type_name.length) ||
write_footer();
}
#if defined(HAVE_REPLICATION)
int User_var_log_event::do_apply_event(rpl_group_info *rgi)
{
Item *it= 0;
CHARSET_INFO *charset;
DBUG_ENTER("User_var_log_event::do_apply_event");
query_id_t sav_query_id= 0; /* memorize orig id when deferred applying */
if (rgi->deferred_events_collecting)
{
set_deferred(current_thd->query_id);
DBUG_RETURN(rgi->deferred_events->add(this));
}
else if (is_deferred())
{
sav_query_id= current_thd->query_id;
current_thd->query_id= query_id; /* recreating original time context */
}
if (!(charset= get_charset(m_charset_number, MYF(MY_WME))))
{
rgi->rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR,
ER_THD(thd, ER_SLAVE_FATAL_ERROR),
"Invalid character set for User var event");
DBUG_RETURN(1);
}
LEX_CSTRING user_var_name;
user_var_name.str= name;
user_var_name.length= name_len;
double real_val;
longlong int_val;
if (is_null)
{
it= new (thd->mem_root) Item_null(thd);
}
else
{
switch (m_type) {
case REAL_RESULT:
if (val_len != 8)
{
rgi->rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR,
ER_THD(thd, ER_SLAVE_FATAL_ERROR),
"Invalid variable length at User var event");
return 1;
}
float8get(real_val, val);
it= new (thd->mem_root) Item_float(thd, real_val, 0);
val= (char*) &real_val; // Pointer to value in native format
val_len= 8;
break;
case INT_RESULT:
if (val_len != 8)
{
rgi->rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR,
ER_THD(thd, ER_SLAVE_FATAL_ERROR),
"Invalid variable length at User var event");
return 1;
}
int_val= (longlong) uint8korr(val);
it= new (thd->mem_root) Item_int(thd, int_val);
val= (char*) &int_val; // Pointer to value in native format
val_len= 8;
break;
case DECIMAL_RESULT:
{
if (val_len < 3)
{
rgi->rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR,
ER_THD(thd, ER_SLAVE_FATAL_ERROR),
"Invalid variable length at User var event");
return 1;
}
Item_decimal *dec= new (thd->mem_root) Item_decimal(thd, (uchar*) val+2, val[0], val[1]);
it= dec;
val= (char *)dec->val_decimal(NULL);
val_len= sizeof(my_decimal);
break;
}
case STRING_RESULT:
it= new (thd->mem_root) Item_string(thd, val, (uint)val_len, charset);
break;
case ROW_RESULT:
default:
DBUG_ASSERT(0);
DBUG_RETURN(0);
}
}
Item_func_set_user_var *e= new (thd->mem_root) Item_func_set_user_var(thd, &user_var_name, it);
/*
Item_func_set_user_var can't substitute something else on its place =>
0 can be passed as last argument (reference on item)
Fix_fields() can fail, in which case a call of update_hash() might
crash the server, so if fix fields fails, we just return with an
error.
*/
if (e->fix_fields(thd, 0))
DBUG_RETURN(1);
const Type_handler *th= Type_handler::handler_by_log_event_data_type(thd,
*this);
e->update_hash((void*) val, val_len, th, charset);
if (!is_deferred())
free_root(thd->mem_root, 0);
else
current_thd->query_id= sav_query_id; /* restore current query's context */
DBUG_RETURN(0);
}
int User_var_log_event::do_update_pos(rpl_group_info *rgi)
{
rgi->inc_event_relay_log_pos();
return 0;
}
Log_event::enum_skip_reason
User_var_log_event::do_shall_skip(rpl_group_info *rgi)
{
/*
It is a common error to set the slave skip counter to 1 instead
of 2 when recovering from an insert which used a auto increment,
rand, or user var. Therefore, if the slave skip counter is 1, we
just say that this event should be skipped by ignoring it, meaning
that we do not change the value of the slave skip counter since it
will be decreased by the following insert event.
*/
return continue_group(rgi);
}
#endif // HAVE_REPLICATION
#ifdef HAVE_REPLICATION
/**************************************************************************
Stop_log_event methods
**************************************************************************/
/*
The master stopped. We used to clean up all temporary tables but
this is useless as, as the master has shut down properly, it has
written all DROP TEMPORARY TABLE (prepared statements' deletion is
TODO only when we binlog prep stmts). We used to clean up
slave_load_tmpdir, but this is useless as it has been cleared at the
end of LOAD DATA INFILE. So we have nothing to do here. The place
were we must do this cleaning is in
Start_log_event_v3::do_apply_event(), not here. Because if we come
here, the master was sane.
This must only be called from the Slave SQL thread, since it calls
Relay_log_info::flush().
*/
int Stop_log_event::do_update_pos(rpl_group_info *rgi)
{
int error= 0;
Relay_log_info *rli= rgi->rli;
DBUG_ENTER("Stop_log_event::do_update_pos");
/*
We do not want to update master_log pos because we get a rotate event
before stop, so by now group_master_log_name is set to the next log.
If we updated it, we will have incorrect master coordinates and this
could give false triggers in MASTER_POS_WAIT() that we have reached
the target position when in fact we have not.
*/
if (rli->get_flag(Relay_log_info::IN_TRANSACTION))
rgi->inc_event_relay_log_pos();
else if (!rgi->is_parallel_exec)
{
rpl_global_gtid_slave_state->record_and_update_gtid(thd, rgi);
rli->inc_group_relay_log_pos(0, rgi);
if (rli->flush())
error= 1;
}
DBUG_RETURN(error);
}
#endif /* HAVE_REPLICATION */
/**************************************************************************
Create_file_log_event methods
**************************************************************************/
Create_file_log_event::
Create_file_log_event(THD* thd_arg, sql_exchange* ex,
const char* db_arg, const char* table_name_arg,
List<Item>& fields_arg,
bool is_concurrent_arg,
enum enum_duplicates handle_dup,
bool ignore,
uchar* block_arg, uint block_len_arg, bool using_trans)
:Load_log_event(thd_arg, ex, db_arg, table_name_arg, fields_arg,
is_concurrent_arg,
handle_dup, ignore, using_trans),
fake_base(0), block(block_arg), event_buf(0), block_len(block_len_arg),
file_id(thd_arg->file_id = mysql_bin_log.next_file_id())
{
DBUG_ENTER("Create_file_log_event");
sql_ex.force_new_format();
DBUG_VOID_RETURN;
}
/*
Create_file_log_event::write_data_body()
*/
bool Create_file_log_event::write_data_body()
{
bool res;
if ((res= Load_log_event::write_data_body()) || fake_base)
return res;
return write_data("", 1) ||
write_data(block, block_len);
}
/*
Create_file_log_event::write_data_header()
*/
bool Create_file_log_event::write_data_header()
{
bool res;
uchar buf[CREATE_FILE_HEADER_LEN];
if ((res= Load_log_event::write_data_header()) || fake_base)
return res;
int4store(buf + CF_FILE_ID_OFFSET, file_id);
return write_data(buf, CREATE_FILE_HEADER_LEN) != 0;
}
/*
Create_file_log_event::write_base()
*/
bool Create_file_log_event::write_base()
{
bool res;
fake_base= 1; // pretend we are Load event
res= write();
fake_base= 0;
return res;
}
#if defined(HAVE_REPLICATION)
void Create_file_log_event::pack_info(Protocol *protocol)
{
char buf[SAFE_NAME_LEN*2 + 30 + 21*2], *pos;
pos= strmov(buf, "db=");
memcpy(pos, db, db_len);
pos= strmov(pos + db_len, ";table=");
memcpy(pos, table_name, table_name_len);
pos= strmov(pos + table_name_len, ";file_id=");
pos= int10_to_str((long) file_id, pos, 10);
pos= strmov(pos, ";block_len=");
pos= int10_to_str((long) block_len, pos, 10);
protocol->store(buf, (uint) (pos-buf), &my_charset_bin);
}
#endif /* defined(HAVE_REPLICATION) */
/**
Create_file_log_event::do_apply_event()
Constructor for Create_file_log_event to intantiate an event
from the relay log on the slave.
@retval
0 Success
@retval
1 Failure
*/
#if defined(HAVE_REPLICATION)
int Create_file_log_event::do_apply_event(rpl_group_info *rgi)
{
char fname_buf[FN_REFLEN];
char *ext;
int fd = -1;
IO_CACHE file;
Log_event_writer lew(&file, 0);
int error = 1;
Relay_log_info const *rli= rgi->rli;
THD_STAGE_INFO(thd, stage_making_temp_file_create_before_load_data);
bzero((char*)&file, sizeof(file));
ext= slave_load_file_stem(fname_buf, file_id, server_id, ".info",
&rli->mi->connection_name);
/* old copy may exist already */
mysql_file_delete(key_file_log_event_info, fname_buf, MYF(0));
if ((fd= mysql_file_create(key_file_log_event_info,
fname_buf, CREATE_MODE,
O_WRONLY | O_BINARY | O_EXCL | O_NOFOLLOW,
MYF(MY_WME))) < 0 ||
init_io_cache(&file, fd, IO_SIZE, WRITE_CACHE, (my_off_t)0, 0,
MYF(MY_WME|MY_NABP)))
{
rli->report(ERROR_LEVEL, my_errno, rgi->gtid_info(),
"Error in Create_file event: could not open file '%s'",
fname_buf);
goto err;
}
// a trick to avoid allocating another buffer
fname= fname_buf;
fname_len= (uint) (strmov(ext, ".data") - fname);
writer= &lew;
if (write_base())
{
strmov(ext, ".info"); // to have it right in the error message
rli->report(ERROR_LEVEL, my_errno, rgi->gtid_info(),
"Error in Create_file event: could not write to file '%s'",
fname_buf);
goto err;
}
end_io_cache(&file);
mysql_file_close(fd, MYF(0));
// fname_buf now already has .data, not .info, because we did our trick
/* old copy may exist already */
mysql_file_delete(key_file_log_event_data, fname_buf, MYF(0));
if ((fd= mysql_file_create(key_file_log_event_data,
fname_buf, CREATE_MODE,
O_WRONLY | O_BINARY | O_EXCL | O_NOFOLLOW,
MYF(MY_WME))) < 0)
{
rli->report(ERROR_LEVEL, my_errno, rgi->gtid_info(),
"Error in Create_file event: could not open file '%s'",
fname_buf);
goto err;
}
if (mysql_file_write(fd, (uchar*) block, block_len, MYF(MY_WME+MY_NABP)))
{
rli->report(ERROR_LEVEL, my_errno, rgi->gtid_info(),
"Error in Create_file event: write to '%s' failed",
fname_buf);
goto err;
}
error=0; // Everything is ok
err:
if (unlikely(error))
end_io_cache(&file);
if (likely(fd >= 0))
mysql_file_close(fd, MYF(0));
return error != 0;
}
#endif /* defined(HAVE_REPLICATION) */
/**************************************************************************
Append_block_log_event methods
**************************************************************************/
Append_block_log_event::Append_block_log_event(THD *thd_arg,
const char *db_arg,
uchar *block_arg,
uint block_len_arg,
bool using_trans)
:Log_event(thd_arg,0, using_trans), block(block_arg),
block_len(block_len_arg), file_id(thd_arg->file_id), db(db_arg)
{
}
bool Append_block_log_event::write()
{
uchar buf[APPEND_BLOCK_HEADER_LEN];
int4store(buf + AB_FILE_ID_OFFSET, file_id);
return write_header(APPEND_BLOCK_HEADER_LEN + block_len) ||
write_data(buf, APPEND_BLOCK_HEADER_LEN) ||
write_data(block, block_len) ||
write_footer();
}
#if defined(HAVE_REPLICATION)
void Append_block_log_event::pack_info(Protocol *protocol)
{
char buf[256];
uint length;
length= (uint) sprintf(buf, ";file_id=%u;block_len=%u", file_id, block_len);
protocol->store(buf, length, &my_charset_bin);
}
/*
Append_block_log_event::get_create_or_append()
*/
int Append_block_log_event::get_create_or_append() const
{
return 0; /* append to the file, fail if not exists */
}
/*
Append_block_log_event::do_apply_event()
*/
int Append_block_log_event::do_apply_event(rpl_group_info *rgi)
{
char fname[FN_REFLEN];
int fd;
int error = 1;
Relay_log_info const *rli= rgi->rli;
DBUG_ENTER("Append_block_log_event::do_apply_event");
THD_STAGE_INFO(thd, stage_making_temp_file_append_before_load_data);
slave_load_file_stem(fname, file_id, server_id, ".data",
&rli->mi->cmp_connection_name);
if (get_create_or_append())
{
/*
Usually lex_start() is called by mysql_parse(), but we need it here
as the present method does not call mysql_parse().
*/
lex_start(thd);
thd->reset_for_next_command();
/* old copy may exist already */
mysql_file_delete(key_file_log_event_data, fname, MYF(0));
if ((fd= mysql_file_create(key_file_log_event_data,
fname, CREATE_MODE,
O_WRONLY | O_BINARY | O_EXCL | O_NOFOLLOW,
MYF(MY_WME))) < 0)
{
rli->report(ERROR_LEVEL, my_errno, rgi->gtid_info(),
"Error in %s event: could not create file '%s'",
get_type_str(), fname);
goto err;
}
}
else if ((fd= mysql_file_open(key_file_log_event_data,
fname,
O_WRONLY | O_APPEND | O_BINARY | O_NOFOLLOW,
MYF(MY_WME))) < 0)
{
rli->report(ERROR_LEVEL, my_errno, rgi->gtid_info(),
"Error in %s event: could not open file '%s'",
get_type_str(), fname);
goto err;
}
DBUG_EXECUTE_IF("remove_slave_load_file_before_write",
{
my_delete(fname, MYF(0));
});
if (mysql_file_write(fd, (uchar*) block, block_len, MYF(MY_WME+MY_NABP)))
{
rli->report(ERROR_LEVEL, my_errno, rgi->gtid_info(),
"Error in %s event: write to '%s' failed",
get_type_str(), fname);
goto err;
}
error=0;
err:
if (fd >= 0)
mysql_file_close(fd, MYF(0));
DBUG_RETURN(error);
}
#endif // HAVE_REPLICATION
/**************************************************************************
Delete_file_log_event methods
**************************************************************************/
Delete_file_log_event::Delete_file_log_event(THD *thd_arg, const char* db_arg,
bool using_trans)
:Log_event(thd_arg, 0, using_trans), file_id(thd_arg->file_id), db(db_arg)
{
}
bool Delete_file_log_event::write()
{
uchar buf[DELETE_FILE_HEADER_LEN];
int4store(buf + DF_FILE_ID_OFFSET, file_id);
return write_header(sizeof(buf)) ||
write_data(buf, sizeof(buf)) ||
write_footer();
}
#if defined(HAVE_REPLICATION)
void Delete_file_log_event::pack_info(Protocol *protocol)
{
char buf[64];
uint length;
length= (uint) sprintf(buf, ";file_id=%u", (uint) file_id);
protocol->store(buf, (int32) length, &my_charset_bin);
}
#endif
#if defined(HAVE_REPLICATION)
int Delete_file_log_event::do_apply_event(rpl_group_info *rgi)
{
char fname[FN_REFLEN+10];
Relay_log_info const *rli= rgi->rli;
char *ext= slave_load_file_stem(fname, file_id, server_id, ".data",
&rli->mi->cmp_connection_name);
mysql_file_delete(key_file_log_event_data, fname, MYF(MY_WME));
strmov(ext, ".info");
mysql_file_delete(key_file_log_event_info, fname, MYF(MY_WME));
return 0;
}
#endif /* defined(HAVE_REPLICATION) */
/**************************************************************************
Execute_load_log_event methods
**************************************************************************/
Execute_load_log_event::Execute_load_log_event(THD *thd_arg,
const char* db_arg,
bool using_trans)
:Log_event(thd_arg, 0, using_trans), file_id(thd_arg->file_id), db(db_arg)
{
}
bool Execute_load_log_event::write()
{
uchar buf[EXEC_LOAD_HEADER_LEN];
int4store(buf + EL_FILE_ID_OFFSET, file_id);
return write_header(sizeof(buf)) ||
write_data(buf, sizeof(buf)) ||
write_footer();
}
#if defined(HAVE_REPLICATION)
void Execute_load_log_event::pack_info(Protocol *protocol)
{
char buf[64];
uint length;
length= (uint) sprintf(buf, ";file_id=%u", (uint) file_id);
protocol->store(buf, (int32) length, &my_charset_bin);
}
/*
Execute_load_log_event::do_apply_event()
*/
int Execute_load_log_event::do_apply_event(rpl_group_info *rgi)
{
char fname[FN_REFLEN+10];
char *ext;
int fd;
int error= 1, read_error;
IO_CACHE file;
Load_log_event *lev= 0;
Relay_log_info const *rli= rgi->rli;
ext= slave_load_file_stem(fname, file_id, server_id, ".info",
&rli->mi->cmp_connection_name);
if ((fd= mysql_file_open(key_file_log_event_info,
fname, O_RDONLY | O_BINARY | O_NOFOLLOW,
MYF(MY_WME))) < 0 ||
init_io_cache(&file, fd, IO_SIZE, READ_CACHE, (my_off_t)0, 0,
MYF(MY_WME|MY_NABP)))
{
rli->report(ERROR_LEVEL, my_errno, rgi->gtid_info(),
"Error in Exec_load event: could not open file '%s'",
fname);
goto err;
}
if (!(lev= (Load_log_event*)
Log_event::read_log_event(&file, &read_error,
rli->relay_log.description_event_for_exec,
opt_slave_sql_verify_checksum)) ||
lev->get_type_code() != NEW_LOAD_EVENT)
{
rli->report(ERROR_LEVEL, 0, rgi->gtid_info(), "Error in Exec_load event: "
"file '%s' appears corrupted", fname);
goto err;
}
lev->thd = thd;
/*
lev->do_apply_event should use rli only for errors i.e. should
not advance rli's position.
lev->do_apply_event is the place where the table is loaded (it
calls mysql_load()).
*/
if (lev->do_apply_event(0,rgi,1))
{
/*
We want to indicate the name of the file that could not be loaded
(SQL_LOADxxx).
But as we are here we are sure the error is in rli->last_slave_error and
rli->last_slave_errno (example of error: duplicate entry for key), so we
don't want to overwrite it with the filename.
What we want instead is add the filename to the current error message.
*/
char *tmp= my_strdup(PSI_INSTRUMENT_ME, rli->last_error().message, MYF(MY_WME));
if (tmp)
{
rli->report(ERROR_LEVEL, rli->last_error().number, rgi->gtid_info(),
"%s. Failed executing load from '%s'", tmp, fname);
my_free(tmp);
}
goto err;
}
/*
We have an open file descriptor to the .info file; we need to close it
or Windows will refuse to delete the file in mysql_file_delete().
*/
if (fd >= 0)
{
mysql_file_close(fd, MYF(0));
end_io_cache(&file);
fd= -1;
}
mysql_file_delete(key_file_log_event_info, fname, MYF(MY_WME));
memcpy(ext, ".data", 6);
mysql_file_delete(key_file_log_event_data, fname, MYF(MY_WME));
error = 0;
err:
delete lev;
if (fd >= 0)
{
mysql_file_close(fd, MYF(0));
end_io_cache(&file);
}
return error;
}
#endif /* defined(HAVE_REPLICATION) */
/**************************************************************************
Begin_load_query_log_event methods
**************************************************************************/
Begin_load_query_log_event::
Begin_load_query_log_event(THD* thd_arg, const char* db_arg, uchar* block_arg,
uint block_len_arg, bool using_trans)
:Append_block_log_event(thd_arg, db_arg, block_arg, block_len_arg,
using_trans)
{
file_id= thd_arg->file_id= mysql_bin_log.next_file_id();
}
#if defined( HAVE_REPLICATION)
int Begin_load_query_log_event::get_create_or_append() const
{
return 1; /* create the file */
}
Log_event::enum_skip_reason
Begin_load_query_log_event::do_shall_skip(rpl_group_info *rgi)
{
/*
If the slave skip counter is 1, then we should not start executing
on the next event.
*/
return continue_group(rgi);
}
#endif /* defined( HAVE_REPLICATION) */
/**************************************************************************
Execute_load_query_log_event methods
**************************************************************************/
Execute_load_query_log_event::
Execute_load_query_log_event(THD *thd_arg, const char* query_arg,
ulong query_length_arg, uint fn_pos_start_arg,
uint fn_pos_end_arg,
enum_load_dup_handling dup_handling_arg,
bool using_trans, bool direct, bool suppress_use,
int errcode):
Query_log_event(thd_arg, query_arg, query_length_arg, using_trans, direct,
suppress_use, errcode),
file_id(thd_arg->file_id), fn_pos_start(fn_pos_start_arg),
fn_pos_end(fn_pos_end_arg), dup_handling(dup_handling_arg)
{
}
bool
Execute_load_query_log_event::write_post_header_for_derived()
{
uchar buf[EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN];
int4store(buf, file_id);
int4store(buf + 4, fn_pos_start);
int4store(buf + 4 + 4, fn_pos_end);
*(buf + 4 + 4 + 4)= (uchar) dup_handling;
return write_data(buf, EXECUTE_LOAD_QUERY_EXTRA_HEADER_LEN);
}
#if defined(HAVE_REPLICATION)
void Execute_load_query_log_event::pack_info(Protocol *protocol)
{
char buf_mem[1024];
String buf(buf_mem, sizeof(buf_mem), system_charset_info);
buf.real_alloc(9 + db_len + q_len + 10 + 21);
if (db && db_len)
{
if (buf.append(STRING_WITH_LEN("use ")) ||
append_identifier(protocol->thd, &buf, db, db_len) ||
buf.append(STRING_WITH_LEN("; ")))
return;
}
if (query && q_len && buf.append(query, q_len))
return;
if (buf.append(STRING_WITH_LEN(" ;file_id=")) ||
buf.append_ulonglong(file_id))
return;
protocol->store(buf.ptr(), buf.length(), &my_charset_bin);
}
int
Execute_load_query_log_event::do_apply_event(rpl_group_info *rgi)
{
char *p;
char *buf;
char *fname;
char *fname_end;
int error;
Relay_log_info const *rli= rgi->rli;
buf= (char*) my_malloc(PSI_INSTRUMENT_ME, q_len + 1 -
(fn_pos_end - fn_pos_start) + (FN_REFLEN + 10) + 10 + 8 + 5, MYF(MY_WME));
DBUG_EXECUTE_IF("LOAD_DATA_INFILE_has_fatal_error", my_free(buf); buf= NULL;);
/* Replace filename and LOCAL keyword in query before executing it */
if (buf == NULL)
{
rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR, rgi->gtid_info(),
ER_THD(rgi->thd, ER_SLAVE_FATAL_ERROR), "Not enough memory");
return 1;
}
p= buf;
memcpy(p, query, fn_pos_start);
p+= fn_pos_start;
fname= (p= strmake(p, STRING_WITH_LEN(" INFILE \'")));
p= slave_load_file_stem(p, file_id, server_id, ".data",
&rli->mi->cmp_connection_name);
fname_end= p= strend(p); // Safer than p=p+5
*(p++)='\'';
switch (dup_handling) {
case LOAD_DUP_IGNORE:
p= strmake(p, STRING_WITH_LEN(" IGNORE"));
break;
case LOAD_DUP_REPLACE:
p= strmake(p, STRING_WITH_LEN(" REPLACE"));
break;
default:
/* Ordinary load data */
break;
}
p= strmake(p, STRING_WITH_LEN(" INTO "));
p= strmake(p, query+fn_pos_end, q_len-fn_pos_end);
error= Query_log_event::do_apply_event(rgi, buf, (uint32)(p-buf));
/* Forging file name for deletion in same buffer */
*fname_end= 0;
/*
If there was an error the slave is going to stop, leave the
file so that we can re-execute this event at START SLAVE.
*/
if (unlikely(!error))
mysql_file_delete(key_file_log_event_data, fname, MYF(MY_WME));
my_free(buf);
return error;
}
#endif // HAVE_REPLICATION
/**************************************************************************
sql_ex_info methods
**************************************************************************/
static bool write_str(Log_event_writer *writer, const char *str, uint length)
{
uchar tmp[1];
tmp[0]= (uchar) length;
return (writer->write_data(tmp, sizeof(tmp)) ||
writer->write_data((uchar*) str, length));
}
bool sql_ex_info::write_data(Log_event_writer *writer)
{
if (new_format())
{
return write_str(writer, field_term, field_term_len) ||
write_str(writer, enclosed, enclosed_len) ||
write_str(writer, line_term, line_term_len) ||
write_str(writer, line_start, line_start_len) ||
write_str(writer, escaped, escaped_len) ||
writer->write_data((uchar*) &opt_flags, 1);
}
else
{
uchar old_ex[7];
old_ex[0]= *field_term;
old_ex[1]= *enclosed;
old_ex[2]= *line_term;
old_ex[3]= *line_start;
old_ex[4]= *escaped;
old_ex[5]= opt_flags;
old_ex[6]= empty_flags;
return writer->write_data(old_ex, sizeof(old_ex));
}
}
/**************************************************************************
Rows_log_event member functions
**************************************************************************/
Rows_log_event::Rows_log_event(THD *thd_arg, TABLE *tbl_arg,
ulonglong table_id,
MY_BITMAP const *cols, bool is_transactional,
Log_event_type event_type)
: Log_event(thd_arg, 0, is_transactional),
m_row_count(0),
m_table(tbl_arg),
m_table_id(table_id),
m_width(tbl_arg ? tbl_arg->s->fields : 1),
m_rows_buf(0), m_rows_cur(0), m_rows_end(0), m_flags(0),
m_type(event_type), m_extra_row_data(0)
#ifdef HAVE_REPLICATION
, m_curr_row(NULL), m_curr_row_end(NULL),
m_key(NULL), m_key_info(NULL), m_key_nr(0),
master_had_triggers(0)
#endif
{
/*
We allow a special form of dummy event when the table, and cols
are null and the table id is UINT32_MAX. This is a temporary
solution, to be able to terminate a started statement in the
binary log: the extraneous events will be removed in the future.
*/
DBUG_ASSERT((tbl_arg && tbl_arg->s &&
(table_id & MAX_TABLE_MAP_ID) != UINT32_MAX) ||
(!tbl_arg && !cols && (table_id & MAX_TABLE_MAP_ID) == UINT32_MAX));
if (thd_arg->variables.option_bits & OPTION_NO_FOREIGN_KEY_CHECKS)
set_flags(NO_FOREIGN_KEY_CHECKS_F);
if (thd_arg->variables.option_bits & OPTION_RELAXED_UNIQUE_CHECKS)
set_flags(RELAXED_UNIQUE_CHECKS_F);
if (thd_arg->variables.option_bits & OPTION_NO_CHECK_CONSTRAINT_CHECKS)
set_flags(NO_CHECK_CONSTRAINT_CHECKS_F);
/* if my_bitmap_init fails, caught in is_valid() */
if (likely(!my_bitmap_init(&m_cols,
m_width <= sizeof(m_bitbuf)*8 ? m_bitbuf : NULL,
m_width,
false)))
{
/* Cols can be zero if this is a dummy binrows event */
if (likely(cols != NULL))
bitmap_copy(&m_cols, cols);
}
}
int Rows_log_event::do_add_row_data(uchar *row_data, size_t length)
{
/*
When the table has a primary key, we would probably want, by default, to
log only the primary key value instead of the entire "before image". This
would save binlog space. TODO
*/
DBUG_ENTER("Rows_log_event::do_add_row_data");
DBUG_PRINT("enter", ("row_data:%p length: %lu", row_data,
(ulong) length));
/*
If length is zero, there is nothing to write, so we just
return. Note that this is not an optimization, since calling
realloc() with size 0 means free().
*/
if (length == 0)
{
m_row_count++;
DBUG_RETURN(0);
}
/*
Don't print debug messages when running valgrind since they can
trigger false warnings.
*/
#ifndef HAVE_valgrind
DBUG_DUMP("row_data", row_data, MY_MIN(length, 32));
#endif
DBUG_ASSERT(m_rows_buf <= m_rows_cur);
DBUG_ASSERT(!m_rows_buf || (m_rows_end && m_rows_buf < m_rows_end));
DBUG_ASSERT(m_rows_cur <= m_rows_end);
/* The cast will always work since m_rows_cur <= m_rows_end */
if (static_cast<size_t>(m_rows_end - m_rows_cur) <= length)
{
size_t const block_size= 1024;
size_t cur_size= m_rows_cur - m_rows_buf;
DBUG_EXECUTE_IF("simulate_too_big_row_case1",
cur_size= UINT_MAX32 - (block_size * 10);
length= UINT_MAX32 - (block_size * 10););
DBUG_EXECUTE_IF("simulate_too_big_row_case2",
cur_size= UINT_MAX32 - (block_size * 10);
length= block_size * 10;);
DBUG_EXECUTE_IF("simulate_too_big_row_case3",
cur_size= block_size * 10;
length= UINT_MAX32 - (block_size * 10););
DBUG_EXECUTE_IF("simulate_too_big_row_case4",
cur_size= UINT_MAX32 - (block_size * 10);
length= (block_size * 10) - block_size + 1;);
size_t remaining_space= UINT_MAX32 - cur_size;
/* Check that the new data fits within remaining space and we can add
block_size without wrapping.
*/
if (cur_size > UINT_MAX32 || length > remaining_space ||
((length + block_size) > remaining_space))
{
sql_print_error("The row data is greater than 4GB, which is too big to "
"write to the binary log.");
DBUG_RETURN(ER_BINLOG_ROW_LOGGING_FAILED);
}
size_t const new_alloc=
block_size * ((cur_size + length + block_size - 1) / block_size);
uchar* const new_buf= (uchar*)my_realloc(PSI_INSTRUMENT_ME, m_rows_buf,
new_alloc, MYF(MY_ALLOW_ZERO_PTR|MY_WME));
if (unlikely(!new_buf))
DBUG_RETURN(HA_ERR_OUT_OF_MEM);
/* If the memory moved, we need to move the pointers */
if (new_buf != m_rows_buf)
{
m_rows_buf= new_buf;
m_rows_cur= m_rows_buf + cur_size;
}
/*
The end pointer should always be changed to point to the end of
the allocated memory.
*/
m_rows_end= m_rows_buf + new_alloc;
}
DBUG_ASSERT(m_rows_cur + length <= m_rows_end);
memcpy(m_rows_cur, row_data, length);
m_rows_cur+= length;
m_row_count++;
DBUG_RETURN(0);
}
#if defined(HAVE_REPLICATION)
/**
Restores empty table list as it was before trigger processing.
@note We have a lot of ASSERTS that check the lists when we close tables.
There was the same problem with MERGE MYISAM tables and so here we try to
go the same way.
*/
inline void restore_empty_query_table_list(LEX *lex)
{
if (lex->first_not_own_table())
(*lex->first_not_own_table()->prev_global)= NULL;
lex->query_tables= NULL;
lex->query_tables_last= &lex->query_tables;
}
int Rows_log_event::do_apply_event(rpl_group_info *rgi)
{
Relay_log_info const *rli= rgi->rli;
TABLE* table;
DBUG_ENTER("Rows_log_event::do_apply_event(Relay_log_info*)");
int error= 0;
LEX *lex= thd->lex;
uint8 new_trg_event_map= get_trg_event_map();
/*
If m_table_id == UINT32_MAX, then we have a dummy event that does not
contain any data. In that case, we just remove all tables in the
tables_to_lock list, close the thread tables, and return with
success.
*/
if (m_table_id == UINT32_MAX)
{
/*
This one is supposed to be set: just an extra check so that
nothing strange has happened.
*/
DBUG_ASSERT(get_flags(STMT_END_F));
rgi->slave_close_thread_tables(thd);
thd->clear_error();
DBUG_RETURN(0);
}
/*
'thd' has been set by exec_relay_log_event(), just before calling
do_apply_event(). We still check here to prevent future coding
errors.
*/
DBUG_ASSERT(rgi->thd == thd);
/*
If there is no locks taken, this is the first binrow event seen
after the table map events. We should then lock all the tables
used in the transaction and proceed with execution of the actual
event.
*/
if (!thd->lock)
{
/*
Lock_tables() reads the contents of thd->lex, so they must be
initialized.
We also call the THD::reset_for_next_command(), since this
is the logical start of the next "statement". Note that this
call might reset the value of current_stmt_binlog_format, so
we need to do any changes to that value after this function.
*/
delete_explain_query(thd->lex);
lex_start(thd);
thd->reset_for_next_command();
/*
The current statement is just about to begin and
has not yet modified anything. Note, all.modified is reset
by THD::reset_for_next_command().
*/
thd->transaction->stmt.modified_non_trans_table= FALSE;
thd->transaction->stmt.m_unsafe_rollback_flags&= ~THD_TRANS::DID_WAIT;
/*
This is a row injection, so we flag the "statement" as
such. Note that this code is called both when the slave does row
injections and when the BINLOG statement is used to do row
injections.
*/
thd->lex->set_stmt_row_injection();
/*
There are a few flags that are replicated with each row event.
Make sure to set/clear them before executing the main body of
the event.
*/
if (get_flags(NO_FOREIGN_KEY_CHECKS_F))
thd->variables.option_bits|= OPTION_NO_FOREIGN_KEY_CHECKS;
else
thd->variables.option_bits&= ~OPTION_NO_FOREIGN_KEY_CHECKS;
if (get_flags(RELAXED_UNIQUE_CHECKS_F))
thd->variables.option_bits|= OPTION_RELAXED_UNIQUE_CHECKS;
else
thd->variables.option_bits&= ~OPTION_RELAXED_UNIQUE_CHECKS;
if (get_flags(NO_CHECK_CONSTRAINT_CHECKS_F))
thd->variables.option_bits|= OPTION_NO_CHECK_CONSTRAINT_CHECKS;
else
thd->variables.option_bits&= ~OPTION_NO_CHECK_CONSTRAINT_CHECKS;
/* A small test to verify that objects have consistent types */
DBUG_ASSERT(sizeof(thd->variables.option_bits) == sizeof(OPTION_RELAXED_UNIQUE_CHECKS));
DBUG_EXECUTE_IF("rows_log_event_before_open_table",
{
const char action[] = "now SIGNAL before_open_table WAIT_FOR go_ahead_sql";
DBUG_ASSERT(!debug_sync_set_action(thd, STRING_WITH_LEN(action)));
};);
/*
Trigger's procedures work with global table list. So we have to add
rgi->tables_to_lock content there to get trigger's in the list.
Then restore_empty_query_table_list() restore the list as it was
*/
DBUG_ASSERT(lex->query_tables == NULL);
if ((lex->query_tables= rgi->tables_to_lock))
rgi->tables_to_lock->prev_global= &lex->query_tables;
for (TABLE_LIST *tables= rgi->tables_to_lock; tables;
tables= tables->next_global)
{
if (slave_run_triggers_for_rbr)
{
tables->trg_event_map= new_trg_event_map;
lex->query_tables_last= &tables->next_global;
}
else
{
tables->slave_fk_event_map= new_trg_event_map;
lex->query_tables_last= &tables->next_global;
}
}
if (unlikely(open_and_lock_tables(thd, rgi->tables_to_lock, FALSE, 0)))
{
#ifdef WITH_WSREP
if (WSREP(thd) && !thd->slave_thread)
{
WSREP_WARN("BF applier thread=%lu failed to open_and_lock_tables for "
"%s, fatal: %d "
"wsrep = (exec_mode: %d conflict_state: %d seqno: %lld)",
thd_get_thread_id(thd),
thd->get_stmt_da()->message(),
thd->is_fatal_error,
thd->wsrep_cs().mode(),
thd->wsrep_trx().state(),
wsrep_thd_trx_seqno(thd));
}
#endif /* WITH_WSREP */
if (thd->is_error() &&
!is_parallel_retry_error(rgi, error= thd->get_stmt_da()->sql_errno()))
{
/*
Error reporting borrowed from Query_log_event with many excessive
simplifications.
We should not honour --slave-skip-errors at this point as we are
having severe errors which should not be skipped.
*/
rli->report(ERROR_LEVEL, error, rgi->gtid_info(),
"Error executing row event: '%s'",
(error ? thd->get_stmt_da()->message() :
"unexpected success or fatal error"));
thd->is_slave_error= 1;
}
/* remove trigger's tables */
goto err;
}
/*
When the open and locking succeeded, we check all tables to
ensure that they still have the correct type.
*/
{
DBUG_PRINT("debug", ("Checking compatibility of tables to lock - tables_to_lock: %p",
rgi->tables_to_lock));
/**
When using RBR and MyISAM MERGE tables the base tables that make
up the MERGE table can be appended to the list of tables to lock.
Thus, we just check compatibility for those that tables that have
a correspondent table map event (ie, those that are actually going
to be accessed while applying the event). That's why the loop stops
at rli->tables_to_lock_count .
NOTE: The base tables are added here are removed when
close_thread_tables is called.
*/
TABLE_LIST *table_list_ptr= rgi->tables_to_lock;
for (uint i=0 ; table_list_ptr && (i < rgi->tables_to_lock_count);
table_list_ptr= table_list_ptr->next_global, i++)
{
/*
Below if condition takes care of skipping base tables that
make up the MERGE table (which are added by open_tables()
call). They are added next to the merge table in the list.
For eg: If RPL_TABLE_LIST is t3->t1->t2 (where t1 and t2
are base tables for merge table 't3'), open_tables will modify
the list by adding t1 and t2 again immediately after t3 in the
list (*not at the end of the list*). New table_to_lock list will
look like t3->t1'->t2'->t1->t2 (where t1' and t2' are TABLE_LIST
objects added by open_tables() call). There is no flag(or logic) in
open_tables() that can skip adding these base tables to the list.
So the logic here should take care of skipping them.
tables_to_lock_count logic will take care of skipping base tables
that are added at the end of the list.
For eg: If RPL_TABLE_LIST is t1->t2->t3, open_tables will modify
the list into t1->t2->t3->t1'->t2'. t1' and t2' will be skipped
because tables_to_lock_count logic in this for loop.
*/
if (table_list_ptr->parent_l)
continue;
/*
We can use a down cast here since we know that every table added
to the tables_to_lock is a RPL_TABLE_LIST (or child table which is
skipped above).
*/
RPL_TABLE_LIST *ptr= static_cast<RPL_TABLE_LIST*>(table_list_ptr);
DBUG_ASSERT(ptr->m_tabledef_valid);
TABLE *conv_table;
if (!ptr->m_tabledef.compatible_with(thd, rgi, ptr->table, &conv_table))
{
DBUG_PRINT("debug", ("Table: %s.%s is not compatible with master",
ptr->table->s->db.str,
ptr->table->s->table_name.str));
/*
We should not honour --slave-skip-errors at this point as we are
having severe errors which should not be skiped.
*/
thd->is_slave_error= 1;
/* remove trigger's tables */
error= ERR_BAD_TABLE_DEF;
goto err;
}
DBUG_PRINT("debug", ("Table: %s.%s is compatible with master"
" - conv_table: %p",
ptr->table->s->db.str,
ptr->table->s->table_name.str, conv_table));
ptr->m_conv_table= conv_table;
}
}
/*
... and then we add all the tables to the table map and but keep
them in the tables to lock list.
We also invalidate the query cache for all the tables, since
they will now be changed.
TODO [/Matz]: Maybe the query cache should not be invalidated
here? It might be that a table is not changed, even though it
was locked for the statement. We do know that each
Rows_log_event contain at least one row, so after processing one
Rows_log_event, we can invalidate the query cache for the
associated table.
*/
TABLE_LIST *ptr= rgi->tables_to_lock;
for (uint i=0 ; ptr && (i < rgi->tables_to_lock_count); ptr= ptr->next_global, i++)
{
/*
Please see comment in above 'for' loop to know the reason
for this if condition
*/
if (ptr->parent_l)
continue;
rgi->m_table_map.set_table(ptr->table_id, ptr->table);
/*
Following is passing flag about triggers on the server. The problem was
to pass it between table map event and row event. I do it via extended
TABLE_LIST (RPL_TABLE_LIST) but row event uses only TABLE so I need to
find somehow the corresponding TABLE_LIST.
*/
if (m_table_id == ptr->table_id)
{
ptr->table->master_had_triggers=
((RPL_TABLE_LIST*)ptr)->master_had_triggers;
}
}
#ifdef HAVE_QUERY_CACHE
/*
Moved invalidation right before the call to rows_event_stmt_cleanup(),
to avoid query cache being polluted with stale entries,
*/
# ifdef WITH_WSREP
/* Query cache is not invalidated on wsrep applier here */
if (!(WSREP(thd) && wsrep_thd_is_applying(thd)))
# endif /* WITH_WSREP */
query_cache.invalidate_locked_for_write(thd, rgi->tables_to_lock);
#endif /* HAVE_QUERY_CACHE */
}
table= m_table= rgi->m_table_map.get_table(m_table_id);
DBUG_PRINT("debug", ("m_table:%p, m_table_id: %llu%s",
m_table, m_table_id,
table && master_had_triggers ?
" (master had triggers)" : ""));
if (table)
{
Rows_log_event::Db_restore_ctx restore_ctx(this);
master_had_triggers= table->master_had_triggers;
bool transactional_table= table->file->has_transactions_and_rollback();
table->file->prepare_for_insert(get_general_type_code() != WRITE_ROWS_EVENT);
/*
table == NULL means that this table should not be replicated
(this was set up by Table_map_log_event::do_apply_event()
which tested replicate-* rules).
*/
/*
It's not needed to set_time() but
1) it continues the property that "Time" in SHOW PROCESSLIST shows how
much slave is behind
2) it will be needed when we allow replication from a table with no
TIMESTAMP column to a table with one.
So we call set_time(), like in SBR. Presently it changes nothing.
*/
thd->set_time(when, when_sec_part);
if (m_width == table->s->fields && bitmap_is_set_all(&m_cols))
set_flags(COMPLETE_ROWS_F);
/*
Set tables write and read sets.
Read_set contains all slave columns (in case we are going to fetch
a complete record from slave).
Write_set equals the m_cols bitmap sent from master but it can be
longer if slave has extra columns.
*/
DBUG_PRINT_BITSET("debug", "Setting table's read_set from: %s", &m_cols);
bitmap_set_all(table->read_set);
if (get_general_type_code() == DELETE_ROWS_EVENT ||
get_general_type_code() == UPDATE_ROWS_EVENT)
bitmap_intersect(table->read_set,&m_cols);
bitmap_set_all(table->write_set);
table->rpl_write_set= table->write_set;
/* WRITE ROWS EVENTS store the bitmap in m_cols instead of m_cols_ai */
MY_BITMAP *after_image= ((get_general_type_code() == UPDATE_ROWS_EVENT) ?
&m_cols_ai : &m_cols);
bitmap_intersect(table->write_set, after_image);
this->slave_exec_mode= slave_exec_mode_options; // fix the mode
// Do event specific preparations
error= do_before_row_operations(rli);
/*
Bug#56662 Assertion failed: next_insert_id == 0, file handler.cc
Don't allow generation of auto_increment value when processing
rows event by setting 'MODE_NO_AUTO_VALUE_ON_ZERO'. The exception
to this rule happens when the auto_inc column exists on some
extra columns on the slave. In that case, do not force
MODE_NO_AUTO_VALUE_ON_ZERO.
*/
sql_mode_t saved_sql_mode= thd->variables.sql_mode;
if (!is_auto_inc_in_extra_columns())
thd->variables.sql_mode= MODE_NO_AUTO_VALUE_ON_ZERO;
// row processing loop
/*
set the initial time of this ROWS statement if it was not done
before in some other ROWS event.
*/
rgi->set_row_stmt_start_timestamp();
THD_STAGE_INFO(thd, stage_executing);
do
{
/* in_use can have been set to NULL in close_tables_for_reopen */
THD* old_thd= table->in_use;
if (!table->in_use)
table->in_use= thd;
error= do_exec_row(rgi);
if (unlikely(error))
DBUG_PRINT("info", ("error: %s", HA_ERR(error)));
DBUG_ASSERT(error != HA_ERR_RECORD_DELETED);
table->in_use = old_thd;
if (unlikely(error))
{
int actual_error= convert_handler_error(error, thd, table);
bool idempotent_error= (idempotent_error_code(error) &&
(slave_exec_mode == SLAVE_EXEC_MODE_IDEMPOTENT));
bool ignored_error= (idempotent_error == 0 ?
ignored_error_code(actual_error) : 0);
#ifdef WITH_WSREP
if (WSREP(thd) && thd->wsrep_applier &&
wsrep_ignored_error_code(this, actual_error))
{
idempotent_error= true;
thd->wsrep_has_ignored_error= true;
}
#endif /* WITH_WSREP */
if (idempotent_error || ignored_error)
{
if (global_system_variables.log_warnings)
slave_rows_error_report(WARNING_LEVEL, error, rgi, thd, table,
get_type_str(),
RPL_LOG_NAME, log_pos);
thd->clear_error(1);
error= 0;
if (idempotent_error == 0)
break;
}
}
/*
If m_curr_row_end was not set during event execution (e.g., because
of errors) we can't proceed to the next row. If the error is transient
(i.e., error==0 at this point) we must call unpack_current_row() to set
m_curr_row_end.
*/
DBUG_PRINT("info", ("curr_row: %p; curr_row_end: %p; rows_end:%p",
m_curr_row, m_curr_row_end, m_rows_end));
if (!m_curr_row_end && likely(!error))
error= unpack_current_row(rgi);
m_curr_row= m_curr_row_end;
if (likely(error == 0) && !transactional_table)
thd->transaction->all.modified_non_trans_table=
thd->transaction->stmt.modified_non_trans_table= TRUE;
} // row processing loop
while (error == 0 && (m_curr_row != m_rows_end));
/*
Restore the sql_mode after the rows event is processed.
*/
thd->variables.sql_mode= saved_sql_mode;
{/**
The following failure injecion works in cooperation with tests
setting @@global.debug= 'd,stop_slave_middle_group'.
The sql thread receives the killed status and will proceed
to shutdown trying to finish incomplete events group.
*/
DBUG_EXECUTE_IF("stop_slave_middle_group",
if (thd->transaction->all.modified_non_trans_table)
const_cast<Relay_log_info*>(rli)->abort_slave= 1;);
}
if (unlikely(error= do_after_row_operations(rli, error)) &&
ignored_error_code(convert_handler_error(error, thd, table)))
{
if (global_system_variables.log_warnings)
slave_rows_error_report(WARNING_LEVEL, error, rgi, thd, table,
get_type_str(),
RPL_LOG_NAME, log_pos);
thd->clear_error(1);
error= 0;
}
} // if (table)
if (unlikely(error))
{
slave_rows_error_report(ERROR_LEVEL, error, rgi, thd, table,
get_type_str(),
RPL_LOG_NAME, log_pos);
/*
@todo We should probably not call
reset_current_stmt_binlog_format_row() from here.
Note: this applies to log_event_old.cc too.
/Sven
*/
thd->reset_current_stmt_binlog_format_row();
thd->is_slave_error= 1;
/* remove trigger's tables */
goto err;
}
/* remove trigger's tables */
restore_empty_query_table_list(thd->lex);
#if defined(WITH_WSREP) && defined(HAVE_QUERY_CACHE)
if (WSREP(thd) && wsrep_thd_is_applying(thd))
query_cache.invalidate_locked_for_write(thd, rgi->tables_to_lock);
#endif /* WITH_WSREP && HAVE_QUERY_CACHE */
if (get_flags(STMT_END_F))
{
if (unlikely((error= rows_event_stmt_cleanup(rgi, thd))))
slave_rows_error_report(ERROR_LEVEL, thd->is_error() ? 0 : error,
rgi, thd, table, get_type_str(),
RPL_LOG_NAME, log_pos);
if (thd->slave_thread)
free_root(thd->mem_root, MYF(MY_KEEP_PREALLOC));
}
DBUG_RETURN(error);
err:
restore_empty_query_table_list(thd->lex);
rgi->slave_close_thread_tables(thd);
DBUG_RETURN(error);
}
Log_event::enum_skip_reason
Rows_log_event::do_shall_skip(rpl_group_info *rgi)
{
/*
If the slave skip counter is 1 and this event does not end a
statement, then we should not start executing on the next event.
Otherwise, we defer the decision to the normal skipping logic.
*/
if (rgi->rli->slave_skip_counter == 1 && !get_flags(STMT_END_F))
return Log_event::EVENT_SKIP_IGNORE;
else
return Log_event::do_shall_skip(rgi);
}
/**
The function is called at Rows_log_event statement commit time,
normally from Rows_log_event::do_update_pos() and possibly from
Query_log_event::do_apply_event() of the COMMIT.
The function commits the last statement for engines, binlog and
releases resources have been allocated for the statement.
@retval 0 Ok.
@retval non-zero Error at the commit.
*/
static int rows_event_stmt_cleanup(rpl_group_info *rgi, THD * thd)
{
int error;
DBUG_ENTER("rows_event_stmt_cleanup");
{
/*
This is the end of a statement or transaction, so close (and
unlock) the tables we opened when processing the
Table_map_log_event starting the statement.
OBSERVER. This will clear *all* mappings, not only those that
are open for the table. There is not good handle for on-close
actions for tables.
NOTE. Even if we have no table ('table' == 0) we still need to be
here, so that we increase the group relay log position. If we didn't, we
could have a group relay log position which lags behind "forever"
(assume the last master's transaction is ignored by the slave because of
replicate-ignore rules).
*/
error= thd->binlog_flush_pending_rows_event(TRUE);
/*
If this event is not in a transaction, the call below will, if some
transactional storage engines are involved, commit the statement into
them and flush the pending event to binlog.
If this event is in a transaction, the call will do nothing, but a
Xid_log_event will come next which will, if some transactional engines
are involved, commit the transaction and flush the pending event to the
binlog.
We check for thd->transaction_rollback_request because it is possible
there was a deadlock that was ignored by slave-skip-errors. Normally, the
deadlock would have been rolled back already.
*/
error|= (int) ((error || thd->transaction_rollback_request)
? trans_rollback_stmt(thd)
: trans_commit_stmt(thd));
/*
Now what if this is not a transactional engine? we still need to
flush the pending event to the binlog; we did it with
thd->binlog_flush_pending_rows_event(). Note that we imitate
what is done for real queries: a call to
ha_autocommit_or_rollback() (sometimes only if involves a
transactional engine), and a call to be sure to have the pending
event flushed.
*/
/*
@todo We should probably not call
reset_current_stmt_binlog_format_row() from here.
Note: this applies to log_event_old.cc too
Btw, the previous comment about transactional engines does not
seem related to anything that happens here.
/Sven
*/
thd->reset_current_stmt_binlog_format_row();
/*
Reset modified_non_trans_table that we have set in
rows_log_event::do_apply_event()
*/
if (!thd->in_multi_stmt_transaction_mode())
{
thd->transaction->all.modified_non_trans_table= 0;
thd->transaction->all.m_unsafe_rollback_flags&= ~THD_TRANS::DID_WAIT;
}
rgi->cleanup_context(thd, 0);
}
DBUG_RETURN(error);
}
/**
The method either increments the relay log position or
commits the current statement and increments the master group
possition if the event is STMT_END_F flagged and
the statement corresponds to the autocommit query (i.e replicated
without wrapping in BEGIN/COMMIT)
@retval 0 Success
@retval non-zero Error in the statement commit
*/
int
Rows_log_event::do_update_pos(rpl_group_info *rgi)
{
Relay_log_info *rli= rgi->rli;
int error= 0;
DBUG_ENTER("Rows_log_event::do_update_pos");
DBUG_PRINT("info", ("flags: %s",
get_flags(STMT_END_F) ? "STMT_END_F " : ""));
if (get_flags(STMT_END_F))
{
/*
Indicate that a statement is finished.
Step the group log position if we are not in a transaction,
otherwise increase the event log position.
*/
error= rli->stmt_done(log_pos, thd, rgi);
/*
Clear any errors in thd->net.last_err*. It is not known if this is
needed or not. It is believed that any errors that may exist in
thd->net.last_err* are allowed. Examples of errors are "key not
found", which is produced in the test case rpl_row_conflicts.test
*/
thd->clear_error();
}
else
{
rgi->inc_event_relay_log_pos();
}
DBUG_RETURN(error);
}
#endif /* defined(HAVE_REPLICATION) */
bool Rows_log_event::write_data_header()
{
uchar buf[ROWS_HEADER_LEN_V2]; // No need to init the buffer
DBUG_ASSERT(m_table_id != UINT32_MAX);
DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master",
{
int4store(buf + 0, (ulong) m_table_id);
int2store(buf + 4, m_flags);
return (write_data(buf, 6));
});
int6store(buf + RW_MAPID_OFFSET, m_table_id);
int2store(buf + RW_FLAGS_OFFSET, m_flags);
return write_data(buf, ROWS_HEADER_LEN);
}
bool Rows_log_event::write_data_body()
{
/*
Note that this should be the number of *bits*, not the number of
bytes.
*/
uchar sbuf[MAX_INT_WIDTH];
my_ptrdiff_t const data_size= m_rows_cur - m_rows_buf;
bool res= false;
uchar *const sbuf_end= net_store_length(sbuf, (size_t) m_width);
uint bitmap_size= no_bytes_in_export_map(&m_cols);
uchar *bitmap;
DBUG_ASSERT(static_cast<size_t>(sbuf_end - sbuf) <= sizeof(sbuf));
DBUG_DUMP("m_width", sbuf, (size_t) (sbuf_end - sbuf));
res= res || write_data(sbuf, (size_t) (sbuf_end - sbuf));
bitmap= (uchar*) my_alloca(bitmap_size);
bitmap_export(bitmap, &m_cols);
DBUG_DUMP("m_cols", bitmap, bitmap_size);
res= res || write_data(bitmap, bitmap_size);
/*
TODO[refactor write]: Remove the "down cast" here (and elsewhere).
*/
if (get_general_type_code() == UPDATE_ROWS_EVENT)
{
DBUG_ASSERT(m_cols.n_bits == m_cols_ai.n_bits);
bitmap_export(bitmap, &m_cols_ai);
DBUG_DUMP("m_cols_ai", bitmap, bitmap_size);
res= res || write_data(bitmap, bitmap_size);
}
DBUG_DUMP("rows", m_rows_buf, data_size);
res= res || write_data(m_rows_buf, (size_t) data_size);
my_afree(bitmap);
return res;
}
bool Rows_log_event::write_compressed()
{
uchar *m_rows_buf_tmp= m_rows_buf;
uchar *m_rows_cur_tmp= m_rows_cur;
bool ret= true;
uint32 comlen, alloc_size;
comlen= alloc_size= binlog_get_compress_len((uint32)(m_rows_cur_tmp -
m_rows_buf_tmp));
m_rows_buf= (uchar*) my_safe_alloca(alloc_size);
if(m_rows_buf &&
!binlog_buf_compress(m_rows_buf_tmp, m_rows_buf,
(uint32)(m_rows_cur_tmp - m_rows_buf_tmp), &comlen))
{
m_rows_cur= comlen + m_rows_buf;
ret= Log_event::write();
}
my_safe_afree(m_rows_buf, alloc_size);
m_rows_buf= m_rows_buf_tmp;
m_rows_cur= m_rows_cur_tmp;
return ret;
}
#if defined(HAVE_REPLICATION)
void Rows_log_event::pack_info(Protocol *protocol)
{
char buf[256];
char const *const flagstr=
get_flags(STMT_END_F) ? " flags: STMT_END_F" : "";
size_t bytes= my_snprintf(buf, sizeof(buf),
"table_id: %llu%s", m_table_id, flagstr);
protocol->store(buf, bytes, &my_charset_bin);
}
#endif
/**************************************************************************
Annotate_rows_log_event member functions
**************************************************************************/
Annotate_rows_log_event::Annotate_rows_log_event(THD *thd,
bool using_trans,
bool direct)
: Log_event(thd, 0, using_trans),
m_save_thd_query_txt(0),
m_save_thd_query_len(0),
m_saved_thd_query(false),
m_used_query_txt(0)
{
m_query_txt= thd->query();
m_query_len= thd->query_length();
if (direct)
cache_type= Log_event::EVENT_NO_CACHE;
}
bool Annotate_rows_log_event::write_data_header()
{
return 0;
}
bool Annotate_rows_log_event::write_data_body()
{
return write_data(m_query_txt, m_query_len);
}
#if defined(HAVE_REPLICATION)
void Annotate_rows_log_event::pack_info(Protocol* protocol)
{
if (m_query_txt && m_query_len)
protocol->store(m_query_txt, m_query_len, &my_charset_bin);
}
#endif
#if defined(HAVE_REPLICATION)
int Annotate_rows_log_event::do_apply_event(rpl_group_info *rgi)
{
rgi->free_annotate_event();
m_save_thd_query_txt= thd->query();
m_save_thd_query_len= thd->query_length();
m_saved_thd_query= true;
m_used_query_txt= 1;
thd->set_query(m_query_txt, m_query_len);
return 0;
}
#endif
#if defined(HAVE_REPLICATION)
int Annotate_rows_log_event::do_update_pos(rpl_group_info *rgi)
{
rgi->inc_event_relay_log_pos();
return 0;
}
#endif
#if defined(HAVE_REPLICATION)
Log_event::enum_skip_reason
Annotate_rows_log_event::do_shall_skip(rpl_group_info *rgi)
{
return continue_group(rgi);
}
#endif
/**************************************************************************
Table_map_log_event member functions and support functions
**************************************************************************/
/**
Save the field metadata based on the real_type of the field.
The metadata saved depends on the type of the field. Some fields
store a single byte for pack_length() while others store two bytes
for field_length (max length).
@retval 0 Ok.
@todo
We may want to consider changing the encoding of the information.
Currently, the code attempts to minimize the number of bytes written to
the tablemap. There are at least two other alternatives; 1) using
net_store_length() to store the data allowing it to choose the number of
bytes that are appropriate thereby making the code much easier to
maintain (only 1 place to change the encoding), or 2) use a fixed number
of bytes for each field. The problem with option 1 is that net_store_length()
will use one byte if the value < 251, but 3 bytes if it is > 250. Thus,
for fields like CHAR which can be no larger than 255 characters, the method
will use 3 bytes when the value is > 250. Further, every value that is
encoded using 2 parts (e.g., pack_length, field_length) will be numerically
> 250 therefore will use 3 bytes for eah value. The problem with option 2
is less wasteful for space but does waste 1 byte for every field that does
not encode 2 parts.
*/
int Table_map_log_event::save_field_metadata()
{
DBUG_ENTER("Table_map_log_event::save_field_metadata");
int index= 0;
Binlog_type_info *info;
for (unsigned int i= 0 ; i < m_table->s->fields ; i++)
{
DBUG_PRINT("debug", ("field_type: %d", m_coltype[i]));
info= binlog_type_info_array + i;
int2store(&m_field_metadata[index], info->m_metadata);
index+= info->m_metadata_size;
DBUG_EXECUTE_IF("inject_invalid_blob_size",
{
if (m_coltype[i] == MYSQL_TYPE_BLOB)
m_field_metadata[index-1] = 5;
});
}
DBUG_RETURN(index);
}
/*
Constructor used to build an event for writing to the binary log.
Mats says tbl->s lives longer than this event so it's ok to copy pointers
(tbl->s->db etc) and not pointer content.
*/
Table_map_log_event::Table_map_log_event(THD *thd, TABLE *tbl, ulonglong tid,
bool is_transactional)
: Log_event(thd, 0, is_transactional),
m_table(tbl),
m_dbnam(tbl->s->db.str),
m_dblen(m_dbnam ? tbl->s->db.length : 0),
m_tblnam(tbl->s->table_name.str),
m_tbllen(tbl->s->table_name.length),
m_colcnt(tbl->s->fields),
m_memory(NULL),
m_table_id(tid),
m_flags(TM_BIT_LEN_EXACT_F),
m_data_size(0),
m_field_metadata(0),
m_field_metadata_size(0),
m_null_bits(0),
m_meta_memory(NULL),
m_optional_metadata_len(0),
m_optional_metadata(NULL)
{
uchar cbuf[MAX_INT_WIDTH];
uchar *cbuf_end;
DBUG_ENTER("Table_map_log_event::Table_map_log_event(TABLE)");
DBUG_ASSERT(m_table_id != UINT32_MAX);
/*
In TABLE_SHARE, "db" and "table_name" are 0-terminated (see this comment in
table.cc / alloc_table_share():
Use the fact the key is db/0/table_name/0
As we rely on this let's assert it.
*/
DBUG_ASSERT((tbl->s->db.str == 0) ||
(tbl->s->db.str[tbl->s->db.length] == 0));
DBUG_ASSERT(tbl->s->table_name.str[tbl->s->table_name.length] == 0);
binlog_type_info_array= (Binlog_type_info *)thd->alloc(m_table->s->fields *
sizeof(Binlog_type_info));
for (uint i= 0; i < m_table->s->fields; i++)
binlog_type_info_array[i]= m_table->field[i]->binlog_type_info();
m_data_size= TABLE_MAP_HEADER_LEN;
DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master", m_data_size= 6;);
m_data_size+= m_dblen + 2; // Include length and terminating \0
m_data_size+= m_tbllen + 2; // Include length and terminating \0
cbuf_end= net_store_length(cbuf, (size_t) m_colcnt);
DBUG_ASSERT(static_cast<size_t>(cbuf_end - cbuf) <= sizeof(cbuf));
m_data_size+= (cbuf_end - cbuf) + m_colcnt; // COLCNT and column types
if (tbl->triggers)
m_flags|= TM_BIT_HAS_TRIGGERS_F;
/* If malloc fails, caught in is_valid() */
if ((m_memory= (uchar*) my_malloc(PSI_INSTRUMENT_ME, m_colcnt, MYF(MY_WME))))
{
m_coltype= reinterpret_cast<uchar*>(m_memory);
for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
m_coltype[i]= binlog_type_info_array[i].m_type_code;
DBUG_EXECUTE_IF("inject_invalid_column_type", m_coltype[1]= 230;);
}
/*
Calculate a bitmap for the results of maybe_null() for all columns.
The bitmap is used to determine when there is a column from the master
that is not on the slave and is null and thus not in the row data during
replication.
*/
uint num_null_bytes= (m_table->s->fields + 7) / 8;
m_data_size+= num_null_bytes;
m_meta_memory= (uchar *)my_multi_malloc(PSI_INSTRUMENT_ME, MYF(MY_WME),
&m_null_bits, num_null_bytes,
&m_field_metadata, (m_colcnt * 2),
NULL);
bzero(m_field_metadata, (m_colcnt * 2));
/*
Create an array for the field metadata and store it.
*/
m_field_metadata_size= save_field_metadata();
DBUG_ASSERT(m_field_metadata_size <= (m_colcnt * 2));
/*
Now set the size of the data to the size of the field metadata array
plus one or three bytes (see pack.c:net_store_length) for number of
elements in the field metadata array.
*/
if (m_field_metadata_size < 251)
m_data_size+= m_field_metadata_size + 1;
else
m_data_size+= m_field_metadata_size + 3;
bzero(m_null_bits, num_null_bytes);
for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
if (m_table->field[i]->maybe_null())
m_null_bits[(i / 8)]+= 1 << (i % 8);
init_metadata_fields();
m_data_size+= m_metadata_buf.length();
DBUG_VOID_RETURN;
}
/*
Return value is an error code, one of:
-1 Failure to open table [from open_tables()]
0 Success
1 No room for more tables [from set_table()]
2 Out of memory [from set_table()]
3 Wrong table definition
4 Daisy-chaining RBR with SBR not possible
*/
#if defined(HAVE_REPLICATION)
enum enum_tbl_map_status
{
/* no duplicate identifier found */
OK_TO_PROCESS= 0,
/* this table map must be filtered out */
FILTERED_OUT= 1,
/* identifier mapping table with different properties */
SAME_ID_MAPPING_DIFFERENT_TABLE= 2,
/* a duplicate identifier was found mapping the same table */
SAME_ID_MAPPING_SAME_TABLE= 3
};
/*
Checks if this table map event should be processed or not. First
it checks the filtering rules, and then looks for duplicate identifiers
in the existing list of rli->tables_to_lock.
It checks that there hasn't been any corruption by verifying that there
are no duplicate entries with different properties.
In some cases, some binary logs could get corrupted, showing several
tables mapped to the same table_id, 0 (see: BUG#56226). Thus we do this
early sanity check for such cases and avoid that the server crashes
later.
In some corner cases, the master logs duplicate table map events, i.e.,
same id, same database name, same table name (see: BUG#37137). This is
different from the above as it's the same table that is mapped again
to the same identifier. Thus we cannot just check for same ids and
assume that the event is corrupted we need to check every property.
NOTE: in the event that BUG#37137 ever gets fixed, this extra check
will still be valid because we would need to support old binary
logs anyway.
@param rli The relay log info reference.
@param table_list A list element containing the table to check against.
@return OK_TO_PROCESS
if there was no identifier already in rli->tables_to_lock
FILTERED_OUT
if the event is filtered according to the filtering rules
SAME_ID_MAPPING_DIFFERENT_TABLE
if the same identifier already maps a different table in
rli->tables_to_lock
SAME_ID_MAPPING_SAME_TABLE
if the same identifier already maps the same table in
rli->tables_to_lock.
*/
static enum_tbl_map_status
check_table_map(rpl_group_info *rgi, RPL_TABLE_LIST *table_list)
{
DBUG_ENTER("check_table_map");
enum_tbl_map_status res= OK_TO_PROCESS;
Relay_log_info *rli= rgi->rli;
if (rgi->thd->slave_thread /* filtering is for slave only */ &&
(!rli->mi->rpl_filter->db_ok(table_list->db.str) ||
(rli->mi->rpl_filter->is_on() && !rli->mi->rpl_filter->tables_ok("", table_list))))
res= FILTERED_OUT;
else
{
RPL_TABLE_LIST *ptr= static_cast<RPL_TABLE_LIST*>(rgi->tables_to_lock);
for(uint i=0 ; ptr && (i< rgi->tables_to_lock_count);
ptr= static_cast<RPL_TABLE_LIST*>(ptr->next_local), i++)
{
if (ptr->table_id == table_list->table_id)
{
if (cmp(&ptr->db, &table_list->db) ||
cmp(&ptr->alias, &table_list->table_name) ||
ptr->lock_type != TL_WRITE) // the ::do_apply_event always sets TL_WRITE
res= SAME_ID_MAPPING_DIFFERENT_TABLE;
else
res= SAME_ID_MAPPING_SAME_TABLE;
break;
}
}
}
DBUG_PRINT("debug", ("check of table map ended up with: %u", res));
DBUG_RETURN(res);
}
int Table_map_log_event::do_apply_event(rpl_group_info *rgi)
{
RPL_TABLE_LIST *table_list;
char *db_mem, *tname_mem, *ptr;
size_t dummy_len, db_mem_length, tname_mem_length;
void *memory;
Rpl_filter *filter;
Relay_log_info const *rli= rgi->rli;
DBUG_ENTER("Table_map_log_event::do_apply_event(Relay_log_info*)");
/* Step the query id to mark what columns that are actually used. */
thd->set_query_id(next_query_id());
if (!(memory= my_multi_malloc(PSI_INSTRUMENT_ME, MYF(MY_WME),
&table_list, (uint) sizeof(RPL_TABLE_LIST),
&db_mem, (uint) NAME_LEN + 1,
&tname_mem, (uint) NAME_LEN + 1,
NullS)))
DBUG_RETURN(HA_ERR_OUT_OF_MEM);
db_mem_length= strmov(db_mem, m_dbnam) - db_mem;
tname_mem_length= strmov(tname_mem, m_tblnam) - tname_mem;
if (lower_case_table_names)
{
my_casedn_str(files_charset_info, (char*)tname_mem);
my_casedn_str(files_charset_info, (char*)db_mem);
}
/* call from mysql_client_binlog_statement() will not set rli->mi */
filter= rgi->thd->slave_thread ? rli->mi->rpl_filter : global_rpl_filter;
/* rewrite rules changed the database */
if (((ptr= (char*) filter->get_rewrite_db(db_mem, &dummy_len)) != db_mem))
db_mem_length= strmov(db_mem, ptr) - db_mem;
LEX_CSTRING tmp_db_name= {db_mem, db_mem_length };
LEX_CSTRING tmp_tbl_name= {tname_mem, tname_mem_length };
table_list->init_one_table(&tmp_db_name, &tmp_tbl_name, 0, TL_WRITE);
table_list->table_id= DBUG_EVALUATE_IF("inject_tblmap_same_id_maps_diff_table", 0, m_table_id);
table_list->updating= 1;
table_list->required_type= TABLE_TYPE_NORMAL;
DBUG_PRINT("debug", ("table: %s is mapped to %llu",
table_list->table_name.str,
table_list->table_id));
table_list->master_had_triggers= ((m_flags & TM_BIT_HAS_TRIGGERS_F) ? 1 : 0);
DBUG_PRINT("debug", ("table->master_had_triggers=%d",
(int)table_list->master_had_triggers));
enum_tbl_map_status tblmap_status= check_table_map(rgi, table_list);
if (tblmap_status == OK_TO_PROCESS)
{
DBUG_ASSERT(thd->lex->query_tables != table_list);
/*
Use placement new to construct the table_def instance in the
memory allocated for it inside table_list.
The memory allocated by the table_def structure (i.e., not the
memory allocated *for* the table_def structure) is released
inside Relay_log_info::clear_tables_to_lock() by calling the
table_def destructor explicitly.
*/
new (&table_list->m_tabledef)
table_def(m_coltype, m_colcnt,
m_field_metadata, m_field_metadata_size,
m_null_bits, m_flags);
table_list->m_tabledef_valid= TRUE;
table_list->m_conv_table= NULL;
table_list->open_type= OT_BASE_ONLY;
/*
We record in the slave's information that the table should be
locked by linking the table into the list of tables to lock.
*/
table_list->next_global= table_list->next_local= rgi->tables_to_lock;
rgi->tables_to_lock= table_list;
rgi->tables_to_lock_count++;
/* 'memory' is freed in clear_tables_to_lock */
}
else // FILTERED_OUT, SAME_ID_MAPPING_*
{
/*
If mapped already but with different properties, we raise an
error.
If mapped already but with same properties we skip the event.
If filtered out we skip the event.
In all three cases, we need to free the memory previously
allocated.
*/
if (tblmap_status == SAME_ID_MAPPING_DIFFERENT_TABLE)
{
/*
Something bad has happened. We need to stop the slave as strange things
could happen if we proceed: slave crash, wrong table being updated, ...
As a consequence we push an error in this case.
*/
char buf[256];
my_snprintf(buf, sizeof(buf),
"Found table map event mapping table id %llu which "
"was already mapped but with different settings.",
table_list->table_id);
if (thd->slave_thread)
rli->report(ERROR_LEVEL, ER_SLAVE_FATAL_ERROR, rgi->gtid_info(),
ER_THD(thd, ER_SLAVE_FATAL_ERROR), buf);
else
/*
For the cases in which a 'BINLOG' statement is set to
execute in a user session
*/
my_error(ER_SLAVE_FATAL_ERROR, MYF(0), buf);
}
my_free(memory);
}
DBUG_RETURN(tblmap_status == SAME_ID_MAPPING_DIFFERENT_TABLE);
}
Log_event::enum_skip_reason
Table_map_log_event::do_shall_skip(rpl_group_info *rgi)
{
/*
If the slave skip counter is 1, then we should not start executing
on the next event.
*/
return continue_group(rgi);
}
int Table_map_log_event::do_update_pos(rpl_group_info *rgi)
{
rgi->inc_event_relay_log_pos();
return 0;
}
#endif /* defined(HAVE_REPLICATION) */
bool Table_map_log_event::write_data_header()
{
DBUG_ASSERT(m_table_id != UINT32_MAX);
uchar buf[TABLE_MAP_HEADER_LEN];
DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master",
{
int4store(buf + 0, (ulong) m_table_id);
int2store(buf + 4, m_flags);
return (write_data(buf, 6));
});
int6store(buf + TM_MAPID_OFFSET, m_table_id);
int2store(buf + TM_FLAGS_OFFSET, m_flags);
return write_data(buf, TABLE_MAP_HEADER_LEN);
}
bool Table_map_log_event::write_data_body()
{
DBUG_ASSERT(m_dbnam != NULL);
DBUG_ASSERT(m_tblnam != NULL);
/* We use only one byte per length for storage in event: */
DBUG_ASSERT(m_dblen <= MY_MIN(NAME_LEN, 255));
DBUG_ASSERT(m_tbllen <= MY_MIN(NAME_LEN, 255));
uchar const dbuf[]= { (uchar) m_dblen };
uchar const tbuf[]= { (uchar) m_tbllen };
uchar cbuf[MAX_INT_WIDTH];
uchar *const cbuf_end= net_store_length(cbuf, (size_t) m_colcnt);
DBUG_ASSERT(static_cast<size_t>(cbuf_end - cbuf) <= sizeof(cbuf));
/*
Store the size of the field metadata.
*/
uchar mbuf[MAX_INT_WIDTH];
uchar *const mbuf_end= net_store_length(mbuf, m_field_metadata_size);
return write_data(dbuf, sizeof(dbuf)) ||
write_data(m_dbnam, m_dblen+1) ||
write_data(tbuf, sizeof(tbuf)) ||
write_data(m_tblnam, m_tbllen+1) ||
write_data(cbuf, (size_t) (cbuf_end - cbuf)) ||
write_data(m_coltype, m_colcnt) ||
write_data(mbuf, (size_t) (mbuf_end - mbuf)) ||
write_data(m_field_metadata, m_field_metadata_size),
write_data(m_null_bits, (m_colcnt + 7) / 8) ||
write_data((const uchar*) m_metadata_buf.ptr(),
m_metadata_buf.length());
}
/**
stores an integer into packed format.
@param[out] str_buf a buffer where the packed integer will be stored.
@param[in] length the integer will be packed.
*/
static inline
void store_compressed_length(String &str_buf, ulonglong length)
{
// Store Type and packed length
uchar buf[4];
uchar *buf_ptr = net_store_length(buf, length);
str_buf.append(reinterpret_cast<char *>(buf), buf_ptr-buf);
}
/**
Write data into str_buf with Type|Length|Value(TLV) format.
@param[out] str_buf a buffer where the field is stored.
@param[in] type type of the field
@param[in] length length of the field value
@param[in] value value of the field
*/
static inline
bool write_tlv_field(String &str_buf,
enum Table_map_log_event::Optional_metadata_field_type
type, uint length, const uchar *value)
{
/* type is stored in one byte, so it should never bigger than 255. */
DBUG_ASSERT(static_cast<int>(type) <= 255);
str_buf.append((char) type);
store_compressed_length(str_buf, length);
return str_buf.append(reinterpret_cast<const char *>(value), length);
}
/**
Write data into str_buf with Type|Length|Value(TLV) format.
@param[out] str_buf a buffer where the field is stored.
@param[in] type type of the field
@param[in] value value of the field
*/
static inline
bool write_tlv_field(String &str_buf,
enum Table_map_log_event::Optional_metadata_field_type
type, const String &value)
{
return write_tlv_field(str_buf, type, value.length(),
reinterpret_cast<const uchar *>(value.ptr()));
}
static inline bool is_character_field(Binlog_type_info *info_array, Field *field)
{
Binlog_type_info *info= info_array + field->field_index;
if (!info->m_cs)
return 0;
if (info->m_set_typelib || info->m_enum_typelib)
return 0;
return 1;
}
static inline bool is_enum_or_set_field(Binlog_type_info *info_array, Field *field) {
Binlog_type_info *info= info_array + field->field_index;
if (info->m_set_typelib || info->m_enum_typelib)
return 1;
return 0;
}
void Table_map_log_event::init_metadata_fields()
{
DBUG_ENTER("init_metadata_fields");
DBUG_EXECUTE_IF("simulate_no_optional_metadata", DBUG_VOID_RETURN;);
if (binlog_row_metadata == BINLOG_ROW_METADATA_NO_LOG)
DBUG_VOID_RETURN;
if (init_signedness_field() ||
init_charset_field(&is_character_field, DEFAULT_CHARSET,
COLUMN_CHARSET) ||
init_geometry_type_field())
{
m_metadata_buf.length(0);
DBUG_VOID_RETURN;
}
if (binlog_row_metadata == BINLOG_ROW_METADATA_FULL)
{
if (DBUG_EVALUATE_IF("dont_log_column_name", 0, init_column_name_field()) ||
init_charset_field(&is_enum_or_set_field, ENUM_AND_SET_DEFAULT_CHARSET,
ENUM_AND_SET_COLUMN_CHARSET) ||
init_set_str_value_field() ||
init_enum_str_value_field() ||
init_primary_key_field())
m_metadata_buf.length(0);
}
DBUG_VOID_RETURN;
}
bool Table_map_log_event::init_signedness_field()
{
/* use it to store signed flags, each numeric column take a bit. */
StringBuffer<128> buf;
unsigned char flag= 0;
unsigned char mask= 0x80;
Binlog_type_info *info;
for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
{
info= binlog_type_info_array + i;
if (info->m_signedness != Binlog_type_info::SIGN_NOT_APPLICABLE)
{
if (info->m_signedness == Binlog_type_info::SIGN_UNSIGNED)
flag|= mask;
mask >>= 1;
// 8 fields are tested, store the result and clear the flag.
if (mask == 0)
{
buf.append(flag);
flag= 0;
mask= 0x80;
}
}
}
// Stores the signedness flags of last few columns
if (mask != 0x80)
buf.append(flag);
// The table has no numeric column, so don't log SIGNEDNESS field
if (buf.is_empty())
return false;
return write_tlv_field(m_metadata_buf, SIGNEDNESS, buf);
}
bool Table_map_log_event::init_charset_field(
bool (* include_type)(Binlog_type_info *, Field *),
Optional_metadata_field_type default_charset_type,
Optional_metadata_field_type column_charset_type)
{
DBUG_EXECUTE_IF("simulate_init_charset_field_error", return true;);
std::map<uint, uint> collation_map;
// For counting characters columns
uint char_col_cnt= 0;
/* Find the collation number used by most fields */
for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
{
if ((*include_type)(binlog_type_info_array, m_table->field[i]))
{
collation_map[binlog_type_info_array[i].m_cs->number]++;
char_col_cnt++;
}
}
if (char_col_cnt == 0)
return false;
/* Find the most used collation */
uint most_used_collation= 0;
uint most_used_count= 0;
for (std::map<uint, uint>::iterator it= collation_map.begin();
it != collation_map.end(); it++)
{
if (it->second > most_used_count)
{
most_used_count= it->second;
most_used_collation= it->first;
}
}
/*
Comparing length of COLUMN_CHARSET field and COLUMN_CHARSET_WITH_DEFAULT
field to decide which field should be logged.
Length of COLUMN_CHARSET = character column count * collation id size.
Length of COLUMN_CHARSET_WITH_DEFAULT =
default collation_id size + count of columns not use default charset *
(column index size + collation id size)
Assume column index just uses 1 byte and collation number also uses 1 byte.
*/
if (char_col_cnt * 1 < (1 + (char_col_cnt - most_used_count) * 2))
{
StringBuffer<512> buf;
/*
Stores character set information into COLUMN_CHARSET format,
character sets of all columns are stored one by one.
-----------------------------------------
| Charset number | .... |Charset number |
-----------------------------------------
*/
for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
{
if (include_type(binlog_type_info_array, m_table->field[i]))
store_compressed_length(buf, binlog_type_info_array[i].m_cs->number);
}
return write_tlv_field(m_metadata_buf, column_charset_type, buf);
}
else
{
StringBuffer<512> buf;
uint char_column_index= 0;
uint default_collation= most_used_collation;
/*
Stores character set information into DEFAULT_CHARSET format,
First stores the default character set, and then stores the character
sets different to default character with their column index one by one.
--------------------------------------------------------
| Default Charset | Col Index | Charset number | ... |
--------------------------------------------------------
*/
// Store the default collation number
store_compressed_length(buf, default_collation);
for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
{
if (include_type(binlog_type_info_array, m_table->field[i]))
{
CHARSET_INFO *cs= binlog_type_info_array[i].m_cs;
DBUG_ASSERT(cs);
if (cs->number != default_collation)
{
store_compressed_length(buf, char_column_index);
store_compressed_length(buf, cs->number);
}
char_column_index++;
}
}
return write_tlv_field(m_metadata_buf, default_charset_type, buf);
}
}
bool Table_map_log_event::init_column_name_field()
{
StringBuffer<2048> buf;
for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
{
size_t len= m_table->field[i]->field_name.length;
store_compressed_length(buf, len);
buf.append(m_table->field[i]->field_name.str, len);
}
return write_tlv_field(m_metadata_buf, COLUMN_NAME, buf);
}
bool Table_map_log_event::init_set_str_value_field()
{
StringBuffer<1024> buf;
TYPELIB *typelib;
/*
SET string values are stored in the same format:
----------------------------------------------
| Value number | value1 len | value 1| .... | // first SET column
----------------------------------------------
| Value number | value1 len | value 1| .... | // second SET column
----------------------------------------------
*/
for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
{
if ((typelib= binlog_type_info_array[i].m_set_typelib))
{
store_compressed_length(buf, typelib->count);
for (unsigned int i= 0; i < typelib->count; i++)
{
store_compressed_length(buf, typelib->type_lengths[i]);
buf.append(typelib->type_names[i], typelib->type_lengths[i]);
}
}
}
if (buf.length() > 0)
return write_tlv_field(m_metadata_buf, SET_STR_VALUE, buf);
return false;
}
bool Table_map_log_event::init_enum_str_value_field()
{
StringBuffer<1024> buf;
TYPELIB *typelib;
/* ENUM is same to SET columns, see comment in init_set_str_value_field */
for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
{
if ((typelib= binlog_type_info_array[i].m_enum_typelib))
{
store_compressed_length(buf, typelib->count);
for (unsigned int i= 0; i < typelib->count; i++)
{
store_compressed_length(buf, typelib->type_lengths[i]);
buf.append(typelib->type_names[i], typelib->type_lengths[i]);
}
}
}
if (buf.length() > 0)
return write_tlv_field(m_metadata_buf, ENUM_STR_VALUE, buf);
return false;
}
bool Table_map_log_event::init_geometry_type_field()
{
StringBuffer<256> buf;
uint geom_type;
/* Geometry type of geometry columns is stored one by one as packed length */
for (unsigned int i= 0 ; i < m_table->s->fields ; ++i)
{
if (binlog_type_info_array[i].m_type_code == MYSQL_TYPE_GEOMETRY)
{
geom_type= binlog_type_info_array[i].m_geom_type;
DBUG_EXECUTE_IF("inject_invalid_geometry_type", geom_type= 100;);
store_compressed_length(buf, geom_type);
}
}
if (buf.length() > 0)
return write_tlv_field(m_metadata_buf, GEOMETRY_TYPE, buf);
return false;
}
bool Table_map_log_event::init_primary_key_field()
{
DBUG_EXECUTE_IF("simulate_init_primary_key_field_error", return true;);
if (unlikely(m_table->s->primary_key == MAX_KEY))
return false;
// If any key column uses prefix like KEY(c1(10)) */
bool has_prefix= false;
KEY *pk= m_table->key_info + m_table->s->primary_key;
DBUG_ASSERT(pk->user_defined_key_parts > 0);
/* Check if any key column uses prefix */
for (uint i= 0; i < pk->user_defined_key_parts; i++)
{
KEY_PART_INFO *key_part= pk->key_part+i;
if (key_part->length != m_table->field[key_part->fieldnr-1]->key_length())
{
has_prefix= true;
break;
}
}
StringBuffer<128> buf;
if (!has_prefix)
{
/* Index of PK columns are stored one by one. */
for (uint i= 0; i < pk->user_defined_key_parts; i++)
{
KEY_PART_INFO *key_part= pk->key_part+i;
store_compressed_length(buf, key_part->fieldnr-1);
}
return write_tlv_field(m_metadata_buf, SIMPLE_PRIMARY_KEY, buf);
}
else
{
/* Index of PK columns are stored with a prefix length one by one. */
for (uint i= 0; i < pk->user_defined_key_parts; i++)
{
KEY_PART_INFO *key_part= pk->key_part+i;
size_t prefix= 0;
store_compressed_length(buf, key_part->fieldnr-1);
// Store character length but not octet length
if (key_part->length != m_table->field[key_part->fieldnr-1]->key_length())
prefix= key_part->length / key_part->field->charset()->mbmaxlen;
store_compressed_length(buf, prefix);
}
return write_tlv_field(m_metadata_buf, PRIMARY_KEY_WITH_PREFIX, buf);
}
}
#if defined(HAVE_REPLICATION)
/*
Print some useful information for the SHOW BINARY LOG information
field.
*/
void Table_map_log_event::pack_info(Protocol *protocol)
{
char buf[256];
size_t bytes= my_snprintf(buf, sizeof(buf),
"table_id: %llu (%s.%s)",
m_table_id, m_dbnam, m_tblnam);
protocol->store(buf, bytes, &my_charset_bin);
}
#endif
/**************************************************************************
Write_rows_log_event member functions
**************************************************************************/
/*
Constructor used to build an event for writing to the binary log.
*/
Write_rows_log_event::Write_rows_log_event(THD *thd_arg, TABLE *tbl_arg,
ulonglong tid_arg,
bool is_transactional)
:Rows_log_event(thd_arg, tbl_arg, tid_arg, tbl_arg->rpl_write_set,
is_transactional, WRITE_ROWS_EVENT_V1)
{
}
Write_rows_compressed_log_event::Write_rows_compressed_log_event(
THD *thd_arg,
TABLE *tbl_arg,
ulonglong tid_arg,
bool is_transactional)
: Write_rows_log_event(thd_arg, tbl_arg, tid_arg, is_transactional)
{
m_type = WRITE_ROWS_COMPRESSED_EVENT_V1;
}
bool Write_rows_compressed_log_event::write()
{
return Rows_log_event::write_compressed();
}
#if defined(HAVE_REPLICATION)
int
Write_rows_log_event::do_before_row_operations(const Slave_reporting_capability *const)
{
int error= 0;
/*
Increment the global status insert count variable
*/
if (get_flags(STMT_END_F))
status_var_increment(thd->status_var.com_stat[SQLCOM_INSERT]);
/**
todo: to introduce a property for the event (handler?) which forces
applying the event in the replace (idempotent) fashion.
*/
if (slave_exec_mode == SLAVE_EXEC_MODE_IDEMPOTENT)
{
/*
We are using REPLACE semantics and not INSERT IGNORE semantics
when writing rows, that is: new rows replace old rows. We need to
inform the storage engine that it should use this behaviour.
*/
/* Tell the storage engine that we are using REPLACE semantics. */
thd->lex->duplicates= DUP_REPLACE;
/*
Pretend we're executing a REPLACE command: this is needed for
InnoDB since it is not (properly) checking the lex->duplicates flag.
*/
thd->lex->sql_command= SQLCOM_REPLACE;
/*
Do not raise the error flag in case of hitting to an unique attribute
*/
m_table->file->extra(HA_EXTRA_IGNORE_DUP_KEY);
/*
The following is needed in case if we have AFTER DELETE triggers.
*/
m_table->file->extra(HA_EXTRA_WRITE_CAN_REPLACE);
m_table->file->extra(HA_EXTRA_IGNORE_NO_KEY);
}
if (m_table->triggers && do_invoke_trigger())
m_table->prepare_triggers_for_insert_stmt_or_event();
/* Honor next number column if present */
m_table->next_number_field= m_table->found_next_number_field;
/*
* Fixed Bug#45999, In RBR, Store engine of Slave auto-generates new
* sequence numbers for auto_increment fields if the values of them are 0.
* If generateing a sequence number is decided by the values of
* table->auto_increment_field_not_null and SQL_MODE(if includes
* MODE_NO_AUTO_VALUE_ON_ZERO) in update_auto_increment function.
* SQL_MODE of slave sql thread is always consistency with master's.
* In RBR, auto_increment fields never are NULL, except if the auto_inc
* column exists only on the slave side (i.e., in an extra column
* on the slave's table).
*/
if (!is_auto_inc_in_extra_columns())
m_table->auto_increment_field_not_null= TRUE;
else
{
/*
Here we have checked that there is an extra field
on this server's table that has an auto_inc column.
Mark that the auto_increment field is null and mark
the read and write set bits.
(There can only be one AUTO_INC column, it is always
indexed and it cannot have a DEFAULT value).
*/
m_table->auto_increment_field_not_null= FALSE;
m_table->mark_auto_increment_column(true);
}
return error;
}
int
Write_rows_log_event::do_after_row_operations(const Slave_reporting_capability *const,
int error)
{
int local_error= 0;
/**
Clear the write_set bit for auto_inc field that only
existed on the destination table as an extra column.
*/
if (is_auto_inc_in_extra_columns())
{
bitmap_clear_bit(m_table->rpl_write_set,
m_table->next_number_field->field_index);
bitmap_clear_bit(m_table->read_set,
m_table->next_number_field->field_index);
if (get_flags(STMT_END_F))
m_table->file->ha_release_auto_increment();
}
m_table->next_number_field=0;
m_table->auto_increment_field_not_null= FALSE;
if (slave_exec_mode == SLAVE_EXEC_MODE_IDEMPOTENT)
{
m_table->file->extra(HA_EXTRA_NO_IGNORE_DUP_KEY);
m_table->file->extra(HA_EXTRA_WRITE_CANNOT_REPLACE);
/*
resetting the extra with
table->file->extra(HA_EXTRA_NO_IGNORE_NO_KEY);
fires bug#27077
explanation: file->reset() performs this duty
ultimately. Still todo: fix
*/
}
if (unlikely((local_error= m_table->file->ha_end_bulk_insert())))
{
m_table->file->print_error(local_error, MYF(0));
}
return error? error : local_error;
}
bool Rows_log_event::process_triggers(trg_event_type event,
trg_action_time_type time_type,
bool old_row_is_record1)
{
bool result;
DBUG_ENTER("Rows_log_event::process_triggers");
m_table->triggers->mark_fields_used(event);
if (slave_run_triggers_for_rbr == SLAVE_RUN_TRIGGERS_FOR_RBR_YES)
{
result= m_table->triggers->process_triggers(thd, event,
time_type,
old_row_is_record1);
}
else
result= m_table->triggers->process_triggers(thd, event,
time_type,
old_row_is_record1);
DBUG_RETURN(result);
}
/*
Check if there are more UNIQUE keys after the given key.
*/
static int
last_uniq_key(TABLE *table, uint keyno)
{
while (++keyno < table->s->keys)
if (table->key_info[keyno].flags & HA_NOSAME)
return 0;
return 1;
}
/**
Check if an error is a duplicate key error.
This function is used to check if an error code is one of the
duplicate key error, i.e., and error code for which it is sensible
to do a <code>get_dup_key()</code> to retrieve the duplicate key.
@param errcode The error code to check.
@return <code>true</code> if the error code is such that
<code>get_dup_key()</code> will return true, <code>false</code>
otherwise.
*/
bool
is_duplicate_key_error(int errcode)
{
switch (errcode)
{
case HA_ERR_FOUND_DUPP_KEY:
case HA_ERR_FOUND_DUPP_UNIQUE:
return true;
}
return false;
}
/**
Write the current row into event's table.
The row is located in the row buffer, pointed by @c m_curr_row member.
Number of columns of the row is stored in @c m_width member (it can be
different from the number of columns in the table to which we insert).
Bitmap @c m_cols indicates which columns are present in the row. It is assumed
that event's table is already open and pointed by @c m_table.
If the same record already exists in the table it can be either overwritten
or an error is reported depending on the value of @c overwrite flag
(error reporting not yet implemented). Note that the matching record can be
different from the row we insert if we use primary keys to identify records in
the table.
The row to be inserted can contain values only for selected columns. The
missing columns are filled with default values using @c prepare_record()
function. If a matching record is found in the table and @c overwritte is
true, the missing columns are taken from it.
@param rli Relay log info (needed for row unpacking).
@param overwrite
Shall we overwrite if the row already exists or signal
error (currently ignored).
@returns Error code on failure, 0 on success.
This method, if successful, sets @c m_curr_row_end pointer to point at the
next row in the rows buffer. This is done when unpacking the row to be
inserted.
@note If a matching record is found, it is either updated using
@c ha_update_row() or first deleted and then new record written.
*/
int
Rows_log_event::write_row(rpl_group_info *rgi,
const bool overwrite)
{
DBUG_ENTER("write_row");
DBUG_ASSERT(m_table != NULL && thd != NULL);
TABLE *table= m_table; // pointer to event's table
int error;
int UNINIT_VAR(keynum);
const bool invoke_triggers= (m_table->triggers && do_invoke_trigger());
auto_afree_ptr<char> key(NULL);
prepare_record(table, m_width, true);
/* unpack row into table->record[0] */
if (unlikely((error= unpack_current_row(rgi))))
{
table->file->print_error(error, MYF(0));
DBUG_RETURN(error);
}
if (m_curr_row == m_rows_buf && !invoke_triggers && !table->s->long_unique_table)
{
/*
This table has no triggers so we can do bulk insert.
This is the first row to be inserted, we estimate the rows with
the size of the first row and use that value to initialize
storage engine for bulk insertion.
*/
/* this is the first row to be inserted, we estimate the rows with
the size of the first row and use that value to initialize
storage engine for bulk insertion */
DBUG_ASSERT(!(m_curr_row > m_curr_row_end));
ha_rows estimated_rows= 0;
if (m_curr_row < m_curr_row_end)
estimated_rows= (m_rows_end - m_curr_row) / (m_curr_row_end - m_curr_row);
else if (m_curr_row == m_curr_row_end)
estimated_rows= 1;
table->file->ha_start_bulk_insert(estimated_rows);
}
/*
Explicitly set the auto_inc to null to make sure that
it gets an auto_generated value.
*/
if (is_auto_inc_in_extra_columns())
m_table->next_number_field->set_null();
DBUG_DUMP("record[0]", table->record[0], table->s->reclength);
DBUG_PRINT_BITSET("debug", "rpl_write_set: %s", table->rpl_write_set);
DBUG_PRINT_BITSET("debug", "read_set: %s", table->read_set);
if (table->s->long_unique_table)
table->update_virtual_fields(table->file, VCOL_UPDATE_FOR_WRITE);
if (invoke_triggers &&
unlikely(process_triggers(TRG_EVENT_INSERT, TRG_ACTION_BEFORE, TRUE)))
{
DBUG_RETURN(HA_ERR_GENERIC); // in case if error is not set yet
}
// Handle INSERT.
if (table->versioned(VERS_TIMESTAMP))
{
ulong sec_part;
bitmap_set_bit(table->read_set, table->vers_start_field()->field_index);
table->file->column_bitmaps_signal();
// Check whether a row came from unversioned table and fix vers fields.
if (table->vers_start_field()->get_timestamp(&sec_part) == 0 && sec_part == 0)
table->vers_update_fields();
}
/*
Try to write record. If a corresponding record already exists in the table,
we try to change it using ha_update_row() if possible. Otherwise we delete
it and repeat the whole process again.
TODO: Add safety measures against infinite looping.
*/
DBUG_EXECUTE_IF("write_row_inject_sleep_before_ha_write_row",
my_sleep(20000););
if (table->s->sequence)
error= update_sequence();
else while (unlikely(error= table->file->ha_write_row(table->record[0])))
{
if (error == HA_ERR_LOCK_DEADLOCK ||
error == HA_ERR_LOCK_WAIT_TIMEOUT ||
(keynum= table->file->get_dup_key(error)) < 0 ||
!overwrite)
{
DBUG_PRINT("info",("get_dup_key returns %d)", keynum));
/*
Deadlock, waiting for lock or just an error from the handler
such as HA_ERR_FOUND_DUPP_KEY when overwrite is false.
Retrieval of the duplicate key number may fail
- either because the error was not "duplicate key" error
- or because the information which key is not available
*/
table->file->print_error(error, MYF(0));
DBUG_RETURN(error);
}
/*
We need to retrieve the old row into record[1] to be able to
either update or delete the offending record. We either:
- use rnd_pos() with a row-id (available as dupp_row) to the
offending row, if that is possible (MyISAM and Blackhole), or else
- use index_read_idx() with the key that is duplicated, to
retrieve the offending row.
*/
if (table->file->ha_table_flags() & HA_DUPLICATE_POS)
{
DBUG_PRINT("info",("Locating offending record using rnd_pos()"));
if ((error= table->file->ha_rnd_init_with_error(0)))
{
DBUG_RETURN(error);
}
error= table->file->ha_rnd_pos(table->record[1], table->file->dup_ref);
if (unlikely(error))
{
DBUG_PRINT("info",("rnd_pos() returns error %d",error));
table->file->print_error(error, MYF(0));
DBUG_RETURN(error);
}
table->file->ha_rnd_end();
}
else
{
DBUG_PRINT("info",("Locating offending record using index_read_idx()"));
if (table->file->extra(HA_EXTRA_FLUSH_CACHE))
{
DBUG_PRINT("info",("Error when setting HA_EXTRA_FLUSH_CACHE"));
DBUG_RETURN(my_errno);
}
if (key.get() == NULL)
{
key.assign(static_cast<char*>(my_alloca(table->s->max_unique_length)));
if (key.get() == NULL)
{
DBUG_PRINT("info",("Can't allocate key buffer"));
DBUG_RETURN(ENOMEM);
}
}
key_copy((uchar*)key.get(), table->record[0], table->key_info + keynum,
0);
error= table->file->ha_index_read_idx_map(table->record[1], keynum,
(const uchar*)key.get(),
HA_WHOLE_KEY,
HA_READ_KEY_EXACT);
if (unlikely(error))
{
DBUG_PRINT("info",("index_read_idx() returns %s", HA_ERR(error)));
table->file->print_error(error, MYF(0));
DBUG_RETURN(error);
}
}
/*
Now, record[1] should contain the offending row. That
will enable us to update it or, alternatively, delete it (so
that we can insert the new row afterwards).
*/
if (table->s->long_unique_table)
{
/* same as for REPLACE/ODKU */
table->move_fields(table->field, table->record[1], table->record[0]);
table->update_virtual_fields(table->file, VCOL_UPDATE_FOR_REPLACE);
table->move_fields(table->field, table->record[0], table->record[1]);
}
/*
If row is incomplete we will use the record found to fill
missing columns.
*/
if (!get_flags(COMPLETE_ROWS_F))
{
restore_record(table,record[1]);
error= unpack_current_row(rgi);
if (table->s->long_unique_table)
table->update_virtual_fields(table->file, VCOL_UPDATE_FOR_WRITE);
}
DBUG_PRINT("debug",("preparing for update: before and after image"));
DBUG_DUMP("record[1] (before)", table->record[1], table->s->reclength);
DBUG_DUMP("record[0] (after)", table->record[0], table->s->reclength);
/*
REPLACE is defined as either INSERT or DELETE + INSERT. If
possible, we can replace it with an UPDATE, but that will not
work on InnoDB if FOREIGN KEY checks are necessary.
I (Matz) am not sure of the reason for the last_uniq_key()
check as, but I'm guessing that it's something along the
following lines.
Suppose that we got the duplicate key to be a key that is not
the last unique key for the table and we perform an update:
then there might be another key for which the unique check will
fail, so we're better off just deleting the row and inserting
the correct row.
Additionally we don't use UPDATE if rbr triggers should be invoked -
when triggers are used we want a simple and predictable execution path.
*/
if (last_uniq_key(table, keynum) && !invoke_triggers &&
!table->file->referenced_by_foreign_key())
{
DBUG_PRINT("info",("Updating row using ha_update_row()"));
error= table->file->ha_update_row(table->record[1],
table->record[0]);
switch (error) {
case HA_ERR_RECORD_IS_THE_SAME:
DBUG_PRINT("info",("ignoring HA_ERR_RECORD_IS_THE_SAME error from"
" ha_update_row()"));
error= 0;
case 0:
break;
default:
DBUG_PRINT("info",("ha_update_row() returns error %d",error));
table->file->print_error(error, MYF(0));
}
DBUG_RETURN(error);
}
else
{
DBUG_PRINT("info",("Deleting offending row and trying to write new one again"));
if (invoke_triggers &&
unlikely(process_triggers(TRG_EVENT_DELETE, TRG_ACTION_BEFORE,
TRUE)))
error= HA_ERR_GENERIC; // in case if error is not set yet
else
{
if (unlikely((error= table->file->ha_delete_row(table->record[1]))))
{
DBUG_PRINT("info",("ha_delete_row() returns error %d",error));
table->file->print_error(error, MYF(0));
DBUG_RETURN(error);
}
if (invoke_triggers &&
unlikely(process_triggers(TRG_EVENT_DELETE, TRG_ACTION_AFTER,
TRUE)))
DBUG_RETURN(HA_ERR_GENERIC); // in case if error is not set yet
}
/* Will retry ha_write_row() with the offending row removed. */
}
}
if (invoke_triggers &&
unlikely(process_triggers(TRG_EVENT_INSERT, TRG_ACTION_AFTER, TRUE)))
error= HA_ERR_GENERIC; // in case if error is not set yet
DBUG_RETURN(error);
}
int Rows_log_event::update_sequence()
{
TABLE *table= m_table; // pointer to event's table
bool old_master= false;
int err= 0;
if (!bitmap_is_set(table->rpl_write_set, MIN_VALUE_FIELD_NO) ||
(
#if defined(WITH_WSREP)
! WSREP(thd) &&
#endif
table->in_use->rgi_slave &&
!(table->in_use->rgi_slave->gtid_ev_flags2 & Gtid_log_event::FL_DDL) &&
!(old_master=
rpl_master_has_bug(thd->rgi_slave->rli,
29621, FALSE, FALSE, FALSE, TRUE))))
{
/* This event come from a setval function executed on the master.
Update the sequence next_number and round, like we do with setval()
*/
MY_BITMAP *old_map= dbug_tmp_use_all_columns(table,
&table->read_set);
longlong nextval= table->field[NEXT_FIELD_NO]->val_int();
longlong round= table->field[ROUND_FIELD_NO]->val_int();
dbug_tmp_restore_column_map(&table->read_set, old_map);
return table->s->sequence->set_value(table, nextval, round, 0) > 0;
}
if (old_master && !WSREP(thd) && thd->rgi_slave->is_parallel_exec)
{
DBUG_ASSERT(thd->rgi_slave->parallel_entry);
/*
With parallel replication enabled, we can't execute alongside any other
transaction in which we may depend, so we force retry to release
the server layer table lock for possible prior in binlog order
same table transactions.
*/
if (thd->rgi_slave->parallel_entry->last_committed_sub_id <
thd->rgi_slave->wait_commit_sub_id)
{
err= ER_LOCK_DEADLOCK;
my_error(err, MYF(0));
}
}
/*
Update all fields in table and update the active sequence, like with
ALTER SEQUENCE
*/
return err == 0 ? table->file->ha_write_row(table->record[0]) : err;
}
#endif
#if defined(HAVE_REPLICATION)
int
Write_rows_log_event::do_exec_row(rpl_group_info *rgi)
{
DBUG_ASSERT(m_table != NULL);
const char *tmp= thd->get_proc_info();
char *message, msg[128];
const LEX_CSTRING &table_name= m_table->s->table_name;
const char quote_char=
get_quote_char_for_identifier(thd, table_name.str, table_name.length);
my_snprintf(msg, sizeof msg,
"Write_rows_log_event::write_row() on table %c%.*s%c",
quote_char, int(table_name.length), table_name.str, quote_char);
message= msg;
int error;
#ifdef WSREP_PROC_INFO
my_snprintf(thd->wsrep_info, sizeof(thd->wsrep_info) - 1,
"Write_rows_log_event::write_row(%lld) on table %c%.*s%c",
(long long) wsrep_thd_trx_seqno(thd), quote_char,
int(table_name.length), table_name.str, quote_char);
message= thd->wsrep_info;
#endif /* WSREP_PROC_INFO */
thd_proc_info(thd, message);
error= write_row(rgi, slave_exec_mode == SLAVE_EXEC_MODE_IDEMPOTENT);
thd_proc_info(thd, tmp);
if (unlikely(error) && unlikely(!thd->is_error()))
{
DBUG_ASSERT(0);
my_error(ER_UNKNOWN_ERROR, MYF(0));
}
return error;
}
#endif /* defined(HAVE_REPLICATION) */
#if defined(HAVE_REPLICATION)
uint8 Write_rows_log_event::get_trg_event_map()
{
return trg2bit(TRG_EVENT_INSERT) | trg2bit(TRG_EVENT_UPDATE) |
trg2bit(TRG_EVENT_DELETE);
}
#endif
/**************************************************************************
Delete_rows_log_event member functions
**************************************************************************/
#if defined(HAVE_REPLICATION)
/*
Compares table->record[0] and table->record[1]
Returns TRUE if different.
*/
static bool record_compare(TABLE *table, bool vers_from_plain= false)
{
bool result= FALSE;
/**
Compare full record only if:
- there are no blob fields (otherwise we would also need
to compare blobs contents as well);
- there are no varchar fields (otherwise we would also need
to compare varchar contents as well);
- there are no null fields, otherwise NULLed fields
contents (i.e., the don't care bytes) may show arbitrary
values, depending on how each engine handles internally.
*/
if ((table->s->blob_fields +
table->s->varchar_fields +
table->s->null_fields) == 0)
{
result= cmp_record(table,record[1]);
goto record_compare_exit;
}
/* Compare null bits */
if (memcmp(table->null_flags,
table->null_flags+table->s->rec_buff_length,
table->s->null_bytes))
{
result= TRUE; // Diff in NULL value
goto record_compare_exit;
}
/* Compare fields */
for (Field **ptr=table->field ; *ptr ; ptr++)
{
/*
If the table is versioned, don't compare using the version if there is a
primary key. If there isn't a primary key, we need the version to
identify the correct record if there are duplicate rows in the data set.
However, if the primary server is unversioned (vers_from_plain is true),
then we implicitly use row_end as the primary key on our side. This is
because the implicit row_end value will be set to the maximum value for
the latest row update (which is what we care about).
*/
if (table->versioned() && (*ptr)->vers_sys_field() &&
(table->s->primary_key < MAX_KEY ||
(vers_from_plain && table->vers_start_field() == (*ptr))))
continue;
/**
We only compare field contents that are not null.
NULL fields (i.e., their null bits) were compared
earlier.
*/
if (!(*(ptr))->is_null())
{
if ((*ptr)->cmp_binary_offset(table->s->rec_buff_length))
{
result= TRUE;
goto record_compare_exit;
}
}
}
record_compare_exit:
return result;
}
/**
Find the best key to use when locating the row in @c find_row().
A primary key is preferred if it exists; otherwise a unique index is
preferred. Else we pick the index with the smalles rec_per_key value.
If a suitable key is found, set @c m_key, @c m_key_nr and @c m_key_info
member fields appropriately.
@returns Error code on failure, 0 on success.
*/
int Rows_log_event::find_key()
{
uint i, best_key_nr, last_part;
KEY *key, *UNINIT_VAR(best_key);
ulong UNINIT_VAR(best_rec_per_key), tmp;
DBUG_ENTER("Rows_log_event::find_key");
DBUG_ASSERT(m_table);
best_key_nr= MAX_KEY;
/*
Keys are sorted so that any primary key is first, followed by unique keys,
followed by any other. So we will automatically pick the primary key if
it exists.
*/
for (i= 0, key= m_table->key_info; i < m_table->s->keys; i++, key++)
{
if (!m_table->s->keys_in_use.is_set(i))
continue;
/*
We cannot use a unique key with NULL-able columns to uniquely identify
a row (but we can still select it for range scan below if nothing better
is available).
*/
if ((key->flags & (HA_NOSAME | HA_NULL_PART_KEY)) == HA_NOSAME)
{
best_key_nr= i;
best_key= key;
break;
}
/*
We can only use a non-unique key if it allows range scans (ie. skip
FULLTEXT indexes and such).
*/
last_part= key->user_defined_key_parts - 1;
DBUG_PRINT("info", ("Index %s rec_per_key[%u]= %lu",
key->name.str, last_part, key->rec_per_key[last_part]));
if (!(m_table->file->index_flags(i, last_part, 1) & HA_READ_NEXT))
continue;
tmp= key->rec_per_key[last_part];
if (best_key_nr == MAX_KEY || (tmp > 0 && tmp < best_rec_per_key))
{
best_key_nr= i;
best_key= key;
best_rec_per_key= tmp;
}
}
if (best_key_nr == MAX_KEY)
{
m_key_info= NULL;
DBUG_RETURN(0);
}
// Allocate buffer for key searches
m_key= (uchar *) my_malloc(PSI_INSTRUMENT_ME, best_key->key_length, MYF(MY_WME));
if (m_key == NULL)
DBUG_RETURN(HA_ERR_OUT_OF_MEM);
m_key_info= best_key;
m_key_nr= best_key_nr;
DBUG_RETURN(0);;
}
/*
Check if we are already spending too much time on this statement.
if we are, warn user that it might be because table does not have
a PK, but only if the warning was not printed before for this STMT.
@param type The event type code.
@param table_name The name of the table that the slave is
operating.
@param is_index_scan States whether the slave is doing an index scan
or not.
@param rli The relay metadata info.
*/
static inline
void issue_long_find_row_warning(Log_event_type type,
const char *table_name,
bool is_index_scan,
rpl_group_info *rgi)
{
if ((global_system_variables.log_warnings > 1 &&
!rgi->is_long_find_row_note_printed()))
{
ulonglong now= microsecond_interval_timer();
ulonglong stmt_ts= rgi->get_row_stmt_start_timestamp();
DBUG_EXECUTE_IF("inject_long_find_row_note",
stmt_ts-=(LONG_FIND_ROW_THRESHOLD*2*HRTIME_RESOLUTION););
longlong delta= (now - stmt_ts)/HRTIME_RESOLUTION;
if (delta > LONG_FIND_ROW_THRESHOLD)
{
rgi->set_long_find_row_note_printed();
const char* evt_type= LOG_EVENT_IS_DELETE_ROW(type) ? " DELETE" : "n UPDATE";
const char* scan_type= is_index_scan ? "scanning an index" : "scanning the table";
sql_print_information("The slave is applying a ROW event on behalf of a%s statement "
"on table %s and is currently taking a considerable amount "
"of time (%lld seconds). This is due to the fact that it is %s "
"while looking up records to be processed. Consider adding a "
"primary key (or unique key) to the table to improve "
"performance.",
evt_type, table_name, delta, scan_type);
}
}
}
/*
HA_ERR_KEY_NOT_FOUND is a fatal error normally, but it's an expected
error in speculate optimistic mode, so use something non-fatal instead
*/
static int row_not_found_error(rpl_group_info *rgi)
{
return rgi->speculation != rpl_group_info::SPECULATE_OPTIMISTIC
? HA_ERR_KEY_NOT_FOUND : HA_ERR_RECORD_CHANGED;
}
static int end_of_file_error(rpl_group_info *rgi)
{
return rgi->speculation != rpl_group_info::SPECULATE_OPTIMISTIC
? HA_ERR_END_OF_FILE : HA_ERR_RECORD_CHANGED;
}
/**
Locate the current row in event's table.
The current row is pointed by @c m_curr_row. Member @c m_width tells
how many columns are there in the row (this can be differnet from
the number of columns in the table). It is assumed that event's
table is already open and pointed by @c m_table.
If a corresponding record is found in the table it is stored in
@c m_table->record[0]. Note that when record is located based on a primary
key, it is possible that the record found differs from the row being located.
If no key is specified or table does not have keys, a table scan is used to
find the row. In that case the row should be complete and contain values for
all columns. However, it can still be shorter than the table, i.e. the table
can contain extra columns not present in the row. It is also possible that
the table has fewer columns than the row being located.
@returns Error code on failure, 0 on success.
@post In case of success @c m_table->record[0] contains the record found.
Also, the internal "cursor" of the table is positioned at the record found.
@note If the engine allows random access of the records, a combination of
@c position() and @c rnd_pos() will be used.
Note that one MUST call ha_index_or_rnd_end() after this function if
it returns 0 as we must leave the row position in the handler intact
for any following update/delete command.
*/
int Rows_log_event::find_row(rpl_group_info *rgi)
{
DBUG_ENTER("Rows_log_event::find_row");
DBUG_ASSERT(m_table && m_table->in_use != NULL);
TABLE *table= m_table;
int error= 0;
bool is_table_scan= false, is_index_scan= false;
/*
rpl_row_tabledefs.test specifies that
if the extra field on the slave does not have a default value
and this is okay with Delete or Update events.
Todo: fix wl3228 hld that requires defauls for all types of events
*/
prepare_record(table, m_width, FALSE);
error= unpack_current_row(rgi);
m_vers_from_plain= false;
if (table->versioned())
{
Field *row_end= table->vers_end_field();
DBUG_ASSERT(table->read_set);
bitmap_set_bit(table->read_set, row_end->field_index);
// check whether master table is unversioned
if (row_end->val_int() == 0)
{
bitmap_set_bit(table->write_set, row_end->field_index);
// Plain source table may have a PRIMARY KEY. And row_end is always
// a part of PRIMARY KEY. Set it to max value for engine to find it in
// index. Needed for an UPDATE/DELETE cases.
table->vers_end_field()->set_max();
m_vers_from_plain= true;
}
table->file->column_bitmaps_signal();
}
DBUG_PRINT("info",("looking for the following record"));
DBUG_DUMP("record[0]", table->record[0], table->s->reclength);
if ((table->file->ha_table_flags() & HA_PRIMARY_KEY_REQUIRED_FOR_POSITION) &&
table->s->primary_key < MAX_KEY)
{
/*
Use a more efficient method to fetch the record given by
table->record[0] if the engine allows it. We first compute a
row reference using the position() member function (it will be
stored in table->file->ref) and the use rnd_pos() to position
the "cursor" (i.e., record[0] in this case) at the correct row.
TODO: Add a check that the correct record has been fetched by
comparing with the original record. Take into account that the
record on the master and slave can be of different
length. Something along these lines should work:
ADD>>> store_record(table,record[1]);
int error= table->file->ha_rnd_pos(table->record[0],
table->file->ref);
ADD>>> DBUG_ASSERT(memcmp(table->record[1], table->record[0],
table->s->reclength) == 0);
*/
int error;
DBUG_PRINT("info",("locating record using primary key (position)"));
error= table->file->ha_rnd_pos_by_record(table->record[0]);
if (unlikely(error))
{
DBUG_PRINT("info",("rnd_pos returns error %d",error));
if (error == HA_ERR_KEY_NOT_FOUND)
error= row_not_found_error(rgi);
table->file->print_error(error, MYF(0));
}
DBUG_RETURN(error);
}
// We can't use position() - try other methods.
/*
We need to retrieve all fields
TODO: Move this out from this function to main loop
*/
table->use_all_columns();
/*
Save copy of the record in table->record[1]. It might be needed
later if linear search is used to find exact match.
*/
store_record(table,record[1]);
if (m_key_info)
{
DBUG_PRINT("info",("locating record using key #%u [%s] (index_read)",
m_key_nr, m_key_info->name.str));
/* We use this to test that the correct key is used in test cases. */
DBUG_EXECUTE_IF("slave_crash_if_wrong_index",
if(0 != strcmp(m_key_info->name.str,"expected_key")) abort(););
/* The key is active: search the table using the index */
if (!table->file->inited &&
(error= table->file->ha_index_init(m_key_nr, FALSE)))
{
DBUG_PRINT("info",("ha_index_init returns error %d",error));
table->file->print_error(error, MYF(0));
goto end;
}
/* Fill key data for the row */
DBUG_ASSERT(m_key);
key_copy(m_key, table->record[0], m_key_info, 0);
/*
Don't print debug messages when running valgrind since they can
trigger false warnings.
*/
#ifndef HAVE_valgrind
DBUG_DUMP("key data", m_key, m_key_info->key_length);
#endif
/*
We need to set the null bytes to ensure that the filler bit are
all set when returning. There are storage engines that just set
the necessary bits on the bytes and don't set the filler bits
correctly.
*/
if (table->s->null_bytes > 0)
table->record[0][table->s->null_bytes - 1]|=
256U - (1U << table->s->last_null_bit_pos);
if (unlikely((error= table->file->ha_index_read_map(table->record[0],
m_key,
HA_WHOLE_KEY,
HA_READ_KEY_EXACT))))
{
DBUG_PRINT("info",("no record matching the key found in the table"));
if (error == HA_ERR_KEY_NOT_FOUND)
error= row_not_found_error(rgi);
table->file->print_error(error, MYF(0));
table->file->ha_index_end();
goto end;
}
/*
Don't print debug messages when running valgrind since they can
trigger false warnings.
*/
#ifndef HAVE_valgrind
DBUG_PRINT("info",("found first matching record"));
DBUG_DUMP("record[0]", table->record[0], table->s->reclength);
#endif
/*
Below is a minor "optimization". If the key (i.e., key number
0) has the HA_NOSAME flag set, we know that we have found the
correct record (since there can be no duplicates); otherwise, we
have to compare the record with the one found to see if it is
the correct one.
CAVEAT! This behaviour is essential for the replication of,
e.g., the mysql.proc table since the correct record *shall* be
found using the primary key *only*. There shall be no
comparison of non-PK columns to decide if the correct record is
found. I can see no scenario where it would be incorrect to
chose the row to change only using a PK or an UNNI.
*/
if (table->key_info->flags & HA_NOSAME)
{
/* Unique does not have non nullable part */
if (!(table->key_info->flags & (HA_NULL_PART_KEY)))
{
error= 0;
goto end;
}
else
{
KEY *keyinfo= table->key_info;
/*
Unique has nullable part. We need to check if there is any
field in the BI image that is null and part of UNNI.
*/
bool null_found= FALSE;
for (uint i=0; i < keyinfo->user_defined_key_parts && !null_found; i++)
{
uint fieldnr= keyinfo->key_part[i].fieldnr - 1;
Field **f= table->field+fieldnr;
null_found= (*f)->is_null();
}
if (!null_found)
{
error= 0;
goto end;
}
/* else fall through to index scan */
}
}
is_index_scan=true;
/*
In case key is not unique, we still have to iterate over records found
and find the one which is identical to the row given. A copy of the
record we are looking for is stored in record[1].
*/
DBUG_PRINT("info",("non-unique index, scanning it to find matching record"));
/* We use this to test that the correct key is used in test cases. */
DBUG_EXECUTE_IF("slave_crash_if_index_scan", abort(););
while (record_compare(table, m_vers_from_plain))
{
while ((error= table->file->ha_index_next(table->record[0])))
{
DBUG_PRINT("info",("no record matching the given row found"));
if (error == HA_ERR_END_OF_FILE)
error= end_of_file_error(rgi);
table->file->print_error(error, MYF(0));
table->file->ha_index_end();
goto end;
}
}
}
else
{
DBUG_PRINT("info",("locating record using table scan (rnd_next)"));
/* We use this to test that the correct key is used in test cases. */
DBUG_EXECUTE_IF("slave_crash_if_table_scan", abort(););
/* We don't have a key: search the table using rnd_next() */
if (unlikely((error= table->file->ha_rnd_init_with_error(1))))
{
DBUG_PRINT("info",("error initializing table scan"
" (ha_rnd_init returns %d)",error));
goto end;
}
is_table_scan= true;
/* Continue until we find the right record or have made a full loop */
do
{
error= table->file->ha_rnd_next(table->record[0]);
if (unlikely(error))
DBUG_PRINT("info", ("error: %s", HA_ERR(error)));
switch (error) {
case 0:
DBUG_DUMP("record found", table->record[0], table->s->reclength);
break;
case HA_ERR_END_OF_FILE:
error= end_of_file_error(rgi);
DBUG_PRINT("info", ("Record not found"));
table->file->ha_rnd_end();
goto end;
default:
DBUG_PRINT("info", ("Failed to get next record"
" (rnd_next returns %d)",error));
table->file->print_error(error, MYF(0));
table->file->ha_rnd_end();
goto end;
}
}
while (record_compare(table, m_vers_from_plain));
/*
Note: above record_compare will take into accout all record fields
which might be incorrect in case a partial row was given in the event
*/
DBUG_ASSERT(error == HA_ERR_END_OF_FILE || error == 0);
}
end:
if (is_table_scan || is_index_scan)
issue_long_find_row_warning(get_general_type_code(), m_table->alias.c_ptr(),
is_index_scan, rgi);
DBUG_RETURN(error);
}
#endif
/*
Constructor used to build an event for writing to the binary log.
*/
Delete_rows_log_event::Delete_rows_log_event(THD *thd_arg, TABLE *tbl_arg,
ulonglong tid,
bool is_transactional)
: Rows_log_event(thd_arg, tbl_arg, tid, tbl_arg->read_set, is_transactional,
DELETE_ROWS_EVENT_V1)
{
}
Delete_rows_compressed_log_event::Delete_rows_compressed_log_event(
THD *thd_arg, TABLE *tbl_arg,
ulonglong tid_arg,
bool is_transactional)
: Delete_rows_log_event(thd_arg, tbl_arg, tid_arg, is_transactional)
{
m_type= DELETE_ROWS_COMPRESSED_EVENT_V1;
}
bool Delete_rows_compressed_log_event::write()
{
return Rows_log_event::write_compressed();
}
#if defined(HAVE_REPLICATION)
int
Delete_rows_log_event::do_before_row_operations(const Slave_reporting_capability *const)
{
/*
Increment the global status delete count variable
*/
if (get_flags(STMT_END_F))
status_var_increment(thd->status_var.com_stat[SQLCOM_DELETE]);
if ((m_table->file->ha_table_flags() & HA_PRIMARY_KEY_REQUIRED_FOR_POSITION) &&
m_table->s->primary_key < MAX_KEY)
{
/*
We don't need to allocate any memory for m_key since it is not used.
*/
return 0;
}
if (do_invoke_trigger())
m_table->prepare_triggers_for_delete_stmt_or_event();
return find_key();
}
int
Delete_rows_log_event::do_after_row_operations(const Slave_reporting_capability *const,
int error)
{
m_table->file->ha_index_or_rnd_end();
my_free(m_key);
m_key= NULL;
m_key_info= NULL;
return error;
}
int Delete_rows_log_event::do_exec_row(rpl_group_info *rgi)
{
int error;
const char *tmp= thd->get_proc_info();
char *message, msg[128];
const LEX_CSTRING &table_name= m_table->s->table_name;
const char quote_char=
get_quote_char_for_identifier(thd, table_name.str, table_name.length);
my_snprintf(msg, sizeof msg,
"Delete_rows_log_event::find_row() on table %c%.*s%c",
quote_char, int(table_name.length), table_name.str, quote_char);
message= msg;
const bool invoke_triggers= (m_table->triggers && do_invoke_trigger());
DBUG_ASSERT(m_table != NULL);
#ifdef WSREP_PROC_INFO
my_snprintf(thd->wsrep_info, sizeof(thd->wsrep_info) - 1,
"Delete_rows_log_event::find_row(%lld) on table %c%.*s%c",
(long long) wsrep_thd_trx_seqno(thd), quote_char,
int(table_name.length), table_name.str,
quote_char);
message= thd->wsrep_info;
#endif /* WSREP_PROC_INFO */
thd_proc_info(thd, message);
if (likely(!(error= find_row(rgi))))
{
/*
Delete the record found, located in record[0]
*/
my_snprintf(msg, sizeof msg,
"Delete_rows_log_event::ha_delete_row() on table %c%.*s%c",
quote_char, int(table_name.length), table_name.str,
quote_char);
message= msg;
#ifdef WSREP_PROC_INFO
snprintf(thd->wsrep_info, sizeof(thd->wsrep_info) - 1,
"Delete_rows_log_event::ha_delete_row(%lld) on table %c%.*s%c",
(long long) wsrep_thd_trx_seqno(thd), quote_char,
int(table_name.length), table_name.str, quote_char);
message= thd->wsrep_info;
#endif
thd_proc_info(thd, message);
if (invoke_triggers &&
unlikely(process_triggers(TRG_EVENT_DELETE, TRG_ACTION_BEFORE, FALSE)))
error= HA_ERR_GENERIC; // in case if error is not set yet
if (likely(!error))
{
m_table->mark_columns_per_binlog_row_image();
if (m_vers_from_plain && m_table->versioned(VERS_TIMESTAMP))
{
Field *end= m_table->vers_end_field();
bitmap_set_bit(m_table->write_set, end->field_index);
store_record(m_table, record[1]);
end->set_time();
error= m_table->file->ha_update_row(m_table->record[1],
m_table->record[0]);
}
else
{
error= m_table->file->ha_delete_row(m_table->record[0]);
}
m_table->default_column_bitmaps();
}
if (invoke_triggers && likely(!error) &&
unlikely(process_triggers(TRG_EVENT_DELETE, TRG_ACTION_AFTER, FALSE)))
error= HA_ERR_GENERIC; // in case if error is not set yet
m_table->file->ha_index_or_rnd_end();
}
thd_proc_info(thd, tmp);
return error;
}
#endif /* defined(HAVE_REPLICATION) */
#if defined(HAVE_REPLICATION)
uint8 Delete_rows_log_event::get_trg_event_map()
{
return trg2bit(TRG_EVENT_DELETE);
}
#endif
/**************************************************************************
Update_rows_log_event member functions
**************************************************************************/
/*
Constructor used to build an event for writing to the binary log.
*/
Update_rows_log_event::Update_rows_log_event(THD *thd_arg, TABLE *tbl_arg,
ulonglong tid,
bool is_transactional)
: Rows_log_event(thd_arg, tbl_arg, tid, tbl_arg->read_set, is_transactional,
UPDATE_ROWS_EVENT_V1)
{
init(tbl_arg->rpl_write_set);
}
Update_rows_compressed_log_event::
Update_rows_compressed_log_event(THD *thd_arg, TABLE *tbl_arg,
ulonglong tid, bool is_transactional)
: Update_rows_log_event(thd_arg, tbl_arg, tid, is_transactional)
{
m_type = UPDATE_ROWS_COMPRESSED_EVENT_V1;
}
bool Update_rows_compressed_log_event::write()
{
return Rows_log_event::write_compressed();
}
void Update_rows_log_event::init(MY_BITMAP const *cols)
{
/* if my_bitmap_init fails, caught in is_valid() */
if (likely(!my_bitmap_init(&m_cols_ai,
m_width <= sizeof(m_bitbuf_ai)*8 ? m_bitbuf_ai : NULL,
m_width,
false)))
{
/* Cols can be zero if this is a dummy binrows event */
if (likely(cols != NULL))
bitmap_copy(&m_cols_ai, cols);
}
}
#if defined(HAVE_REPLICATION)
int
Update_rows_log_event::do_before_row_operations(const Slave_reporting_capability *const)
{
/*
Increment the global status update count variable
*/
if (get_flags(STMT_END_F))
status_var_increment(thd->status_var.com_stat[SQLCOM_UPDATE]);
int err;
if ((err= find_key()))
return err;
if (do_invoke_trigger())
m_table->prepare_triggers_for_update_stmt_or_event();
return 0;
}
int
Update_rows_log_event::do_after_row_operations(const Slave_reporting_capability *const,
int error)
{
/*error= ToDo:find out what this should really be, this triggers close_scan in nbd, returning error?*/
m_table->file->ha_index_or_rnd_end();
my_free(m_key); // Free for multi_malloc
m_key= NULL;
m_key_info= NULL;
return error;
}
int
Update_rows_log_event::do_exec_row(rpl_group_info *rgi)
{
const bool invoke_triggers= (m_table->triggers && do_invoke_trigger());
const char *tmp= thd->get_proc_info();
DBUG_ASSERT(m_table != NULL);
char *message, msg[128];
const LEX_CSTRING &table_name= m_table->s->table_name;
const char quote_char=
get_quote_char_for_identifier(thd, table_name.str, table_name.length);
my_snprintf(msg, sizeof msg,
"Update_rows_log_event::find_row() on table %c%.*s%c",
quote_char, int(table_name.length), table_name.str, quote_char);
message= msg;
#ifdef WSREP_PROC_INFO
my_snprintf(thd->wsrep_info, sizeof(thd->wsrep_info) - 1,
"Update_rows_log_event::find_row(%lld) on table %c%.*s%c",
(long long) wsrep_thd_trx_seqno(thd), quote_char,
int(table_name.length), table_name.str,
quote_char);
message= thd->wsrep_info;
#endif /* WSREP_PROC_INFO */
thd_proc_info(thd, message);
// Temporary fix to find out why it fails [/Matz]
memcpy(m_table->read_set->bitmap, m_cols.bitmap, (m_table->read_set->n_bits + 7) / 8);
memcpy(m_table->write_set->bitmap, m_cols_ai.bitmap, (m_table->write_set->n_bits + 7) / 8);
m_table->mark_columns_per_binlog_row_image();
int error= find_row(rgi);
if (unlikely(error))
{
/*
We need to read the second image in the event of error to be
able to skip to the next pair of updates
*/
if ((m_curr_row= m_curr_row_end))
unpack_current_row(rgi, &m_cols_ai);
thd_proc_info(thd, tmp);
return error;
}
const bool history_change= m_table->versioned() ?
!m_table->vers_end_field()->is_max() : false;
TABLE_LIST *tl= m_table->pos_in_table_list;
uint8 trg_event_map_save= tl->trg_event_map;
/*
This is the situation after locating BI:
===|=== before image ====|=== after image ===|===
^ ^
m_curr_row m_curr_row_end
BI found in the table is stored in record[0]. We copy it to record[1]
and unpack AI to record[0].
*/
store_record(m_table,record[1]);
m_curr_row= m_curr_row_end;
my_snprintf(msg, sizeof msg,
"Update_rows_log_event::unpack_current_row() on table %c%.*s%c",
quote_char, int(table_name.length), table_name.str, quote_char);
message= msg;
#ifdef WSREP_PROC_INFO
my_snprintf(thd->wsrep_info, sizeof(thd->wsrep_info) - 1,
"Update_rows_log_event::unpack_current_row(%lld) on table %c%.*s%c",
(long long) wsrep_thd_trx_seqno(thd), quote_char,
int(table_name.length), table_name.str, quote_char);
message= thd->wsrep_info;
#endif /* WSREP_PROC_INFO */
/* this also updates m_curr_row_end */
thd_proc_info(thd, message);
if (unlikely((error= unpack_current_row(rgi, &m_cols_ai))))
goto err;
if (m_table->s->long_unique_table)
m_table->update_virtual_fields(m_table->file, VCOL_UPDATE_FOR_WRITE);
/*
Now we have the right row to update. The old row (the one we're
looking for) is in record[1] and the new row is in record[0].
*/
#ifndef HAVE_valgrind
/*
Don't print debug messages when running valgrind since they can
trigger false warnings.
*/
DBUG_PRINT("info",("Updating row in table"));
DBUG_DUMP("old record", m_table->record[1], m_table->s->reclength);
DBUG_DUMP("new values", m_table->record[0], m_table->s->reclength);
#endif
my_snprintf(msg, sizeof msg,
"Update_rows_log_event::ha_update_row() on table %c%.*s%c",
quote_char, int(table_name.length), table_name.str, quote_char);
message= msg;
#ifdef WSREP_PROC_INFO
my_snprintf(thd->wsrep_info, sizeof(thd->wsrep_info) - 1,
"Update_rows_log_event::ha_update_row(%lld) on table %c%.*s%c",
(long long) wsrep_thd_trx_seqno(thd), quote_char,
int(table_name.length), table_name.str, quote_char);
message= thd->wsrep_info;
#endif /* WSREP_PROC_INFO */
thd_proc_info(thd, message);
if (invoke_triggers &&
unlikely(process_triggers(TRG_EVENT_UPDATE, TRG_ACTION_BEFORE, TRUE)))
{
error= HA_ERR_GENERIC; // in case if error is not set yet
goto err;
}
if (m_table->versioned())
{
if (m_vers_from_plain && m_table->versioned(VERS_TIMESTAMP))
m_table->vers_update_fields();
if (!history_change && !m_table->vers_end_field()->is_max())
{
tl->trg_event_map|= trg2bit(TRG_EVENT_DELETE);
}
}
error= m_table->file->ha_update_row(m_table->record[1], m_table->record[0]);
tl->trg_event_map= trg_event_map_save;
if (unlikely(error == HA_ERR_RECORD_IS_THE_SAME))
error= 0;
if (m_vers_from_plain && m_table->versioned(VERS_TIMESTAMP))
{
store_record(m_table, record[2]);
error= vers_insert_history_row(m_table);
restore_record(m_table, record[2]);
}
m_table->default_column_bitmaps();
if (invoke_triggers && likely(!error) &&
unlikely(process_triggers(TRG_EVENT_UPDATE, TRG_ACTION_AFTER, TRUE)))
error= HA_ERR_GENERIC; // in case if error is not set yet
err:
thd_proc_info(thd, tmp);
m_table->file->ha_index_or_rnd_end();
return error;
}
#endif /* defined(HAVE_REPLICATION) */
#if defined(HAVE_REPLICATION)
uint8 Update_rows_log_event::get_trg_event_map()
{
return trg2bit(TRG_EVENT_UPDATE);
}
#endif
#if defined(MYSQL_SERVER) && defined(HAVE_REPLICATION)
void Incident_log_event::pack_info(Protocol *protocol)
{
char buf[256];
size_t bytes;
if (m_message.length > 0)
bytes= my_snprintf(buf, sizeof(buf), "#%d (%s)",
m_incident, description());
else
bytes= my_snprintf(buf, sizeof(buf), "#%d (%s): %s",
m_incident, description(), m_message.str);
protocol->store(buf, bytes, &my_charset_bin);
}
#endif
#if defined(WITH_WSREP)
/*
read the first event from (*buf). The size of the (*buf) is (*buf_len).
At the end (*buf) is shitfed to point to the following event or NULL and
(*buf_len) will be changed to account just being read bytes of the 1st event.
*/
#define WSREP_MAX_ALLOWED_PACKET 1024*1024*1024 // current protocol max
Log_event* wsrep_read_log_event(
char **arg_buf, size_t *arg_buf_len,
const Format_description_log_event *description_event)
{
uchar *head= (uchar*) (*arg_buf);
uint data_len = uint4korr(head + EVENT_LEN_OFFSET);
const char *error= 0;
Log_event *res= 0;
DBUG_ENTER("wsrep_read_log_event");
if (data_len > WSREP_MAX_ALLOWED_PACKET)
{
error = "Event too big";
goto err;
}
res= Log_event::read_log_event(head, data_len, &error, description_event,
false);
err:
if (!res)
{
DBUG_ASSERT(error != 0);
sql_print_error("Error in Log_event::read_log_event(): "
"'%s', data_len: %u, event_type: %d",
error, data_len, (int) head[EVENT_TYPE_OFFSET]);
}
(*arg_buf)+= data_len;
(*arg_buf_len)-= data_len;
DBUG_RETURN(res);
}
#endif
#if defined(HAVE_REPLICATION)
int Incident_log_event::do_apply_event(rpl_group_info *rgi)
{
Relay_log_info const *rli= rgi->rli;
DBUG_ENTER("Incident_log_event::do_apply_event");
if (ignored_error_code(ER_SLAVE_INCIDENT))
{
DBUG_PRINT("info", ("Ignoring Incident"));
DBUG_RETURN(0);
}
rli->report(ERROR_LEVEL, ER_SLAVE_INCIDENT, NULL,
ER_THD(rgi->thd, ER_SLAVE_INCIDENT),
description(),
m_message.length > 0 ? m_message.str : "<none>");
DBUG_RETURN(1);
}
#endif
bool
Incident_log_event::write_data_header()
{
DBUG_ENTER("Incident_log_event::write_data_header");
DBUG_PRINT("enter", ("m_incident: %d", m_incident));
uchar buf[sizeof(int16)];
int2store(buf, (int16) m_incident);
DBUG_RETURN(write_data(buf, sizeof(buf)));
}
bool
Incident_log_event::write_data_body()
{
uchar tmp[1];
DBUG_ENTER("Incident_log_event::write_data_body");
tmp[0]= (uchar) m_message.length;
DBUG_RETURN(write_data(tmp, sizeof(tmp)) ||
write_data(m_message.str, m_message.length));
}
#if defined(MYSQL_SERVER) && defined(HAVE_REPLICATION)
/* Pack info for its unrecognized ignorable event */
void Ignorable_log_event::pack_info(Protocol *protocol)
{
char buf[256];
size_t bytes;
bytes= my_snprintf(buf, sizeof(buf), "# Ignorable event type %d (%s)",
number, description);
protocol->store(buf, bytes, &my_charset_bin);
}
#endif
#if defined(HAVE_REPLICATION)
Heartbeat_log_event::Heartbeat_log_event(const uchar *buf, uint event_len,
const Format_description_log_event* description_event)
:Log_event(buf, description_event)
{
uint8 header_size= description_event->common_header_len;
if (log_pos == 0)
{
log_pos= uint8korr(buf + header_size);
log_ident= buf + header_size + HB_SUB_HEADER_LEN;
ident_len= event_len - (header_size + HB_SUB_HEADER_LEN);
}
else
{
log_ident= buf + header_size;
ident_len = event_len - header_size;
}
}
#endif
/**
Check if we should write event to the relay log
This is used to skip events that is only supported by MySQL
Return:
0 ok
1 Don't write event
*/
bool event_that_should_be_ignored(const uchar *buf)
{
uint event_type= buf[EVENT_TYPE_OFFSET];
if (event_type == GTID_LOG_EVENT ||
event_type == ANONYMOUS_GTID_LOG_EVENT ||
event_type == PREVIOUS_GTIDS_LOG_EVENT ||
event_type == TRANSACTION_CONTEXT_EVENT ||
event_type == VIEW_CHANGE_EVENT ||
(uint2korr(buf + FLAGS_OFFSET) & LOG_EVENT_IGNORABLE_F))
return 1;
return 0;
}
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