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Binlog Server doesn't ask for any maxwell query if the option is not set

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If ‘maxwell-compatibility’ option is not set, no SET/SELECT are sent to
master during slave registration phase
This commit is contained in:
MassimilianoPinto
2017-03-14 09:28:04 +01:00
parent 147a1f88eb
commit 573615889b
2 changed files with 74 additions and 35 deletions
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93
server/modules/routing/binlogrouter/blr_master.c
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@ -722,43 +722,80 @@ blr_master_response(ROUTER_INSTANCE *router, GWBUF *buf)
router->saved_master.map = buf;
blr_cache_response(router, "map", buf);
// Query for Server Variables
buf = blr_make_query(router->master, MYSQL_CONNECTOR_SERVER_VARS_QUERY);
router->master_state = BLRM_SERVER_VARS;
router->master->func.write(router->master, buf);
break;
if (router->maxwell_compat)
{
// Query for Server Variables
buf = blr_make_query(router->master, MYSQL_CONNECTOR_SERVER_VARS_QUERY);
router->master_state = BLRM_SERVER_VARS;
router->master->func.write(router->master, buf);
break;
}
else
{
// Continue: ready for the registration, nothing to write/read
router->master_state = BLRM_REGISTER_READY;
}
case BLRM_SERVER_VARS:
if (router->saved_master.server_vars)
/**
* This branch could be reached as fallthrough from BLRM_MAP
* with new state BLRM_REGISTER_READY
* Go ahead if maxwell_compat is not set
*/
if (router->maxwell_compat)
{
GWBUF_CONSUME_ALL(router->saved_master.server_vars);
}
router->saved_master.server_vars = buf;
blr_cache_response(router, "server_vars", buf);
if (router->saved_master.server_vars)
{
GWBUF_CONSUME_ALL(router->saved_master.server_vars);
}
router->saved_master.server_vars = buf;
blr_cache_response(router, "server_vars", buf);
buf = blr_make_query(router->master, "SELECT IF(@@global.log_bin, 'ON', 'OFF'), @@global.binlog_format, @@global.binlog_row_image");
router->master_state = BLRM_BINLOG_VARS;
router->master->func.write(router->master, buf);
break;
buf = blr_make_query(router->master,
"SELECT IF(@@global.log_bin, 'ON', 'OFF'), "
"@@global.binlog_format, @@global.binlog_row_image");
router->master_state = BLRM_BINLOG_VARS;
router->master->func.write(router->master, buf);
break;
}
case BLRM_BINLOG_VARS:
if (router->saved_master.binlog_vars)
/**
* This branch could be reached as fallthrough from BLRM_MAP
* with new state BLRM_REGISTER_READY.
* Go ahead if maxwell_compat is not set
*/
if (router->maxwell_compat)
{
GWBUF_CONSUME_ALL(router->saved_master.binlog_vars);
}
router->saved_master.binlog_vars = buf;
blr_cache_response(router, "binlog_vars", buf);
if (router->saved_master.binlog_vars)
{
GWBUF_CONSUME_ALL(router->saved_master.binlog_vars);
}
router->saved_master.binlog_vars = buf;
blr_cache_response(router, "binlog_vars", buf);
buf = blr_make_query(router->master, "select @@lower_case_table_names");
router->master_state = BLRM_LOWER_CASE_TABLES;
router->master->func.write(router->master, buf);
break;
buf = blr_make_query(router->master, "select @@lower_case_table_names");
router->master_state = BLRM_LOWER_CASE_TABLES;
router->master->func.write(router->master, buf);
break;
}
case BLRM_LOWER_CASE_TABLES:
if (router->saved_master.lower_case_tables)
/**
* This branch could be reached as fallthrough from BLRM_MAP
* with new state BLRM_REGISTER_READY.
* Go ahead if maxwell_compat is not set
*/
if (router->maxwell_compat)
{
GWBUF_CONSUME_ALL(router->saved_master.lower_case_tables);
if (router->saved_master.lower_case_tables)
{
GWBUF_CONSUME_ALL(router->saved_master.lower_case_tables);
}
router->saved_master.lower_case_tables = buf;
blr_cache_response(router, "lower_case_tables", buf);
router->master_state = BLRM_REGISTER_READY;
// Continue: ready for the registration, nothing to write/read
}
router->saved_master.lower_case_tables = buf;
blr_cache_response(router, "lower_case_tables", buf);
case BLRM_REGISTER_READY:
// Prepare registration
buf = blr_make_registration(router);
router->master_state = BLRM_REGISTER;
router->master->func.write(router->master, buf);