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WL#5142 FLUSH LOGS should take optional arguments for which log(s) to flush

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Support for flushing individual logs, so that the user can
selectively flush a subset of the server logs.

Flush of individual logs is done according to the 
following syntax:

  FLUSH <log_category> LOGS;

The syntax is extended so that the user is able to flush a
subset of logs:

  FLUSH [log_category LOGS,];

where log_category is one of:
  SLOW
  ERROR
  BINARY
  ENGINE
  GENERAL
  RELAY.


mysql-test/suite/rpl/r/rpl_flush_logs.result:
  Test result for WL#5142.
mysql-test/suite/rpl/t/rpl_flush_logs.test:
  Added the test file to verify if the 'flush individual log' 
  statement works fine.
sql/log.cc:
  Added the two functions to flush slow and general log.
sql/sql_parse.cc:
  Added code to flush specified logs against the option.
sql/sql_yacc.yy:
  Added code to parse the 'flush * log' statement syntax and 
  set its option to Lex->type.
This commit is contained in:
unknown
2009-12-03 16:59:58 +08:00
parent 80cb81069b
commit ac647f5a3e
9 changed files with 346 additions and 11 deletions
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39
sql/sql_parse.cc
View File

@ -6664,6 +6664,30 @@ bool reload_acl_and_cache(THD *thd, ulong options, TABLE_LIST *tables,
tables.
*/
options|= REFRESH_BINARY_LOG;
options|= REFRESH_RELAY_LOG;
options|= REFRESH_SLOW_LOG;
options|= REFRESH_GENERAL_LOG;
options|= REFRESH_ENGINE_LOG;
options|= REFRESH_ERROR_LOG;
}
if (options & REFRESH_ERROR_LOG)
if (flush_error_log())
result= 1;
if ((options & REFRESH_SLOW_LOG) && opt_slow_log)
logger.flush_slow_log();
if ((options & REFRESH_GENERAL_LOG) && opt_log)
logger.flush_general_log();
if (options & REFRESH_ENGINE_LOG)
if (ha_flush_logs(NULL))
result= 1;
if (options & REFRESH_BINARY_LOG)
{
/*
Writing this command to the binlog may result in infinite loops
when doing mysqlbinlog|mysql, and anyway it does not really make
@ -6671,23 +6695,16 @@ bool reload_acl_and_cache(THD *thd, ulong options, TABLE_LIST *tables,
than it would help them)
*/
tmp_write_to_binlog= 0;
if( mysql_bin_log.is_open() )
{
if (mysql_bin_log.is_open())
mysql_bin_log.rotate_and_purge(RP_FORCE_ROTATE);
}
}
if (options & REFRESH_RELAY_LOG)
{
#ifdef HAVE_REPLICATION
pthread_mutex_lock(&LOCK_active_mi);
rotate_relay_log(active_mi);
pthread_mutex_unlock(&LOCK_active_mi);
#endif
/* flush slow and general logs */
logger.flush_logs(thd);
if (ha_flush_logs(NULL))
result=1;
if (flush_error_log())
result=1;
}
#ifdef HAVE_QUERY_CACHE
if (options & REFRESH_QUERY_CACHE_FREE)