database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

WL#1967

Browse Source 
Support for COMMIT/ROLLBACK optional arguments
This commit is contained in:
acurtis@pcgem.rdg.cyberkinetica.com
2005-02-01 19:48:05 +00:00
parent b9054c5e4a
commit a67924ecbc
15 changed files with 402 additions and 76 deletions
Download Patch File Download Diff File Expand all files Collapse all files

213
sql/sql_parse.cc
View File

@ -134,6 +134,27 @@ static bool end_active_trans(THD *thd)
DBUG_RETURN(error);
}
static bool begin_trans(THD *thd)
{
int error=0;
if (thd->locked_tables)
{
thd->lock=thd->locked_tables;
thd->locked_tables=0; // Will be automatically closed
close_thread_tables(thd); // Free tables
}
if (end_active_trans(thd))
error= -1;
else
{
thd->options= ((thd->options & (ulong) ~(OPTION_STATUS_NO_TRANS_UPDATE)) |
OPTION_BEGIN);
thd->server_status|= SERVER_STATUS_IN_TRANS;
if (lex->start_transaction_opt & MYSQL_START_TRANS_OPT_WITH_CONS_SNAPSHOT)
error= ha_start_consistent_snapshot(thd);
}
return error;
}
#ifdef HAVE_REPLICATION
inline bool all_tables_not_ok(THD *thd, TABLE_LIST *tables)
@ -1262,6 +1283,127 @@ err:
DBUG_RETURN(error);
}
/*
Ends the current transaction and (maybe) begin the next
First uint4 in packet is completion type
Remainder is savepoint name (if required)
SYNOPSIS
mysql_endtrans()
thd Current thread
completion Completion type
savepoint_name Savepoint when doing ROLLBACK_SAVEPOINT_NAME
or RELEASE_SAVEPOINT_NAME
release (OUT) indicator for release operation
RETURN
0 - OK
*/
enum enum_mysql_completiontype {
ROLLBACK_RELEASE=-2,
COMMIT_RELEASE=-1,
COMMIT=0,
ROLLBACK=1,
SAVEPOINT_NAME_ROLLBACK=2,
SAVEPOINT_NAME_RELEASE=4,
COMMIT_AND_CHAIN=6,
ROLLBACK_AND_CHAIN=7,
};
int mysql_endtrans(THD *thd, enum enum_mysql_completiontype completion,
char *savepoint_name)
{
bool do_release= 0;
int res= 0;
LEX *lex= thd->lex;
DBUG_ENTER("mysql_endtrans");
switch (completion) {
case COMMIT:
/*
We don't use end_active_trans() here to ensure that this works
even if there is a problem with the OPTION_AUTO_COMMIT flag
(Which of course should never happen...)
*/
thd->options&= ~(ulong) (OPTION_BEGIN | OPTION_STATUS_NO_TRANS_UPDATE);
thd->server_status&= ~SERVER_STATUS_IN_TRANS;
if (!(res= ha_commit(thd)))
send_ok(thd);
break;
case COMMIT_RELEASE:
do_release= 1;
case COMMIT_AND_CHAIN:
res= end_active_trans(thd);
if (!res && completion == COMMIT_AND_CHAIN)
res= begin_trans(thd);
if (!res)
send_ok(thd);
break;
case ROLLBACK_RELEASE:
do_release= 1;
case ROLLBACK:
case ROLLBACK_AND_CHAIN:
{
bool warn= 0;
thd->server_status&= ~SERVER_STATUS_IN_TRANS;
if (!ha_rollback(thd))
{
/*
If a non-transactional table was updated, warn; don't warn if this is a
slave thread (because when a slave thread executes a ROLLBACK, it has
been read from the binary log, so it's 100% sure and normal to produce
error ER_WARNING_NOT_COMPLETE_ROLLBACK. If we sent the warning to the
slave SQL thread, it would not stop the thread but just be printed in
the error log; but we don't want users to wonder why they have this
message in the error log, so we don't send it.
*/
warn= (thd->options & OPTION_STATUS_NO_TRANS_UPDATE) &&
!thd->slave_thread;
}
else
res= -1;
thd->options&= ~(ulong) (OPTION_BEGIN | OPTION_STATUS_NO_TRANS_UPDATE);
if (!res && (completion == ROLLBACK_AND_CHAIN))
res= begin_trans(thd);
if (!res)
{
if (warn)
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
ER_WARNING_NOT_COMPLETE_ROLLBACK,
ER(ER_WARNING_NOT_COMPLETE_ROLLBACK));
send_ok(thd);
}
break;
}
case SAVEPOINT_NAME_ROLLBACK:
if (!(res=ha_rollback_to_savepoint(thd, savepoint_name)))
{
if ((thd->options & OPTION_STATUS_NO_TRANS_UPDATE) && !thd->slave_thread)
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
ER_WARNING_NOT_COMPLETE_ROLLBACK,
ER(ER_WARNING_NOT_COMPLETE_ROLLBACK));
send_ok(thd);
}
break;
case SAVEPOINT_NAME_RELEASE:
if (!(res=ha_release_savepoint_name(thd, savepoint_name)))
send_ok(thd);
break;
default:
res= -1;
my_error(ER_UNKNOWN_COM_ERROR, MYF(0));
DBUG_RETURN(-1);
}
if (res < 0)
my_error(thd->killed_errno(), MYF(0));
else if ((res == 0) && do_release)
thd->killed= THD::KILL_CONNECTION;
DBUG_RETURN(res);
}
#ifndef EMBEDDED_LIBRARY
@ -3648,74 +3790,23 @@ unsent_create_error:
break;
case SQLCOM_BEGIN:
if (thd->locked_tables)
{
thd->lock=thd->locked_tables;
thd->locked_tables=0; // Will be automatically closed
close_thread_tables(thd); // Free tables
}
if (end_active_trans(thd))
if (begin_trans(thd))
goto error;
else
{
thd->options= ((thd->options & (ulong) ~(OPTION_STATUS_NO_TRANS_UPDATE)) |
OPTION_BEGIN);
thd->server_status|= SERVER_STATUS_IN_TRANS;
if (!(lex->start_transaction_opt & MYSQL_START_TRANS_OPT_WITH_CONS_SNAPSHOT) ||
!(res= ha_start_consistent_snapshot(thd)))
send_ok(thd);
}
send_ok(thd);
break;
case SQLCOM_COMMIT:
/*
We don't use end_active_trans() here to ensure that this works
even if there is a problem with the OPTION_AUTO_COMMIT flag
(Which of course should never happen...)
*/
{
thd->options&= ~(ulong) (OPTION_BEGIN | OPTION_STATUS_NO_TRANS_UPDATE);
thd->server_status&= ~SERVER_STATUS_IN_TRANS;
if (!ha_commit(thd))
{
send_ok(thd);
}
else
if (mysql_endtrans(thd, lex->tx_release ? COMMIT_RELEASE :
lex->tx_chain ? COMMIT_AND_CHAIN : COMMIT, 0))
goto error;
break;
}
case SQLCOM_ROLLBACK:
thd->server_status&= ~SERVER_STATUS_IN_TRANS;
if (!ha_rollback(thd))
{
/*
If a non-transactional table was updated, warn; don't warn if this is a
slave thread (because when a slave thread executes a ROLLBACK, it has
been read from the binary log, so it's 100% sure and normal to produce
error ER_WARNING_NOT_COMPLETE_ROLLBACK. If we sent the warning to the
slave SQL thread, it would not stop the thread but just be printed in
the error log; but we don't want users to wonder why they have this
message in the error log, so we don't send it.
*/
if ((thd->options & OPTION_STATUS_NO_TRANS_UPDATE) && !thd->slave_thread)
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
ER_WARNING_NOT_COMPLETE_ROLLBACK,
ER(ER_WARNING_NOT_COMPLETE_ROLLBACK));
send_ok(thd);
}
else
res= TRUE;
thd->options&= ~(ulong) (OPTION_BEGIN | OPTION_STATUS_NO_TRANS_UPDATE);
if (mysql_endtrans(thd, lex->tx_release ? ROLLBACK_RELEASE :
lex->tx_chain ? ROLLBACK_AND_CHAIN : ROLLBACK, 0))
goto error;
break;
case SQLCOM_ROLLBACK_TO_SAVEPOINT:
if (!ha_rollback_to_savepoint(thd, lex->savepoint_name))
{
if ((thd->options & OPTION_STATUS_NO_TRANS_UPDATE) && !thd->slave_thread)
push_warning(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
ER_WARNING_NOT_COMPLETE_ROLLBACK,
ER(ER_WARNING_NOT_COMPLETE_ROLLBACK));
send_ok(thd);
}
else
if (mysql_endtrans(thd, SAVEPOINT_NAME_ROLLBACK, lex->savepoint_name))
goto error;
break;
case SQLCOM_SAVEPOINT:
@ -3724,6 +3815,10 @@ unsent_create_error:
else
goto error;
break;
case SQLCOM_RELEASE_SAVEPOINT:
if (mysql_endtrans(thd, SAVEPOINT_NAME_RELEASE, lex->savepoint_name))
goto error;
break;
case SQLCOM_CREATE_PROCEDURE:
case SQLCOM_CREATE_SPFUNCTION:
{