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MXS-1075: MariaDB 10 Slave registration with GTID

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New SQL commands are handled for MariaDB 10 slave registration with GTID
This commit is contained in:
MassimilianoPinto
2017-03-06 08:56:26 +01:00
parent 1061344de9
commit 4e8bf1106b
5 changed files with 88 additions and 10 deletions
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79
server/modules/routing/binlogrouter/blr_slave.c
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@ -333,7 +333,7 @@ blr_skip_leading_sql_comments(const char *sql_query)
* order to support some commands that are useful for monitoring the binlog
* router.
*
* Thirteen select statements are currently supported:
* 15 select statements are currently supported:
* SELECT UNIX_TIMESTAMP();
* SELECT @master_binlog_checksum
* SELECT @@GLOBAL.GTID_MODE
@ -347,8 +347,10 @@ blr_skip_leading_sql_comments(const char *sql_query)
* SELECT @@version
* SELECT @@[GLOBAL.]server_uuid
* SELECT USER()
* SELECT @@GLOBAL.gtid_domain_id
* SELECT @@[GLOBAL].gtid_current_pos
*
* Eight show commands are supported:
* 8 show commands are supported:
* SHOW [GLOBAL] VARIABLES LIKE 'SERVER_ID'
* SHOW [GLOBAL] VARIABLES LIKE 'SERVER_UUID'
* SHOW [GLOBAL] VARIABLES LIKE 'MAXSCALE%'
@ -358,7 +360,7 @@ blr_skip_leading_sql_comments(const char *sql_query)
* SHOW WARNINGS
* SHOW [GLOBAL] STATUS LIKE 'Uptime'
*
* Nine set commands are supported:
* 12 set commands are supported:
* SET @master_binlog_checksum = @@global.binlog_checksum
* SET @master_heartbeat_period=...
* SET @slave_slave_uuid=...
@ -368,8 +370,11 @@ blr_skip_leading_sql_comments(const char *sql_query)
* SET mariadb_slave_capability=...
* SET autocommit=
* SET @@session.autocommit=
* SET @slave_connect_state=
* SET @slave_gtid_strict_mode=
* SET @slave_gtid_ignore_duplicates=
*
* Four administrative commands are supported:
* 4 administrative commands are supported:
* STOP SLAVE
* START SLAVE
* CHANGE MASTER TO
@ -663,6 +668,21 @@ blr_slave_query(ROUTER_INSTANCE *router, ROUTER_SLAVE *slave, GWBUF *queue)
return blr_slave_send_var_value(router, slave, heading, mariadb_gtid, BLR_TYPE_STRING);
}
else if (strcasecmp(word, "@@GLOBAL.gtid_domain_id") == 0)
{
/* If not mariadb an error message will be returned */
if (slave->mariadb10_compat && router->mariadb_gtid)
{
char heading[40];
strcpy(heading, word);
MXS_FREE(query_text);
return blr_slave_send_var_value(router,
slave,
heading,
"0",
BLR_TYPE_STRING);
}
}
else if (strcasestr(word, "binlog_gtid_pos"))
{
unexpected = false;
@ -935,6 +955,57 @@ blr_slave_query(ROUTER_INSTANCE *router, ROUTER_SLAVE *slave, GWBUF *queue)
MXS_FREE(query_text);
return blr_slave_replay(router, slave, router->saved_master.setslaveuuid);
}
else if (strstr(word, "@slave_connect_state") != NULL)
{
/* If not mariadb an error message will be returned */
if (slave->mariadb10_compat &&
router->mariadb_gtid &&
(word = strtok_r(NULL, sep, &brkb)) != NULL)
{
char heading[GTID_MAX_LEN + 1];
MXS_DEBUG("Received GTID request '%s' from slave %u",
word,
slave->serverid);
// TOTO: gtid_strip_chars routine for this
strcpy(heading, word + 1);
heading[strlen(heading) - 1] = '\0';
/**
* Set the GTID string, it could be an empty
* in case of a fresh new setup.
*/
MXS_FREE(slave->mariadb_gtid);
slave->mariadb_gtid = MXS_STRDUP(heading);
MXS_FREE(query_text);
return blr_slave_send_ok(router, slave);
}
}
else if (strcasecmp(word, "@slave_gtid_strict_mode") == 0)
{
/* If not mariadb an error message will be returned */
if (slave->mariadb10_compat &&
router->mariadb_gtid &&
(word = strtok_r(NULL, sep, &brkb)) != NULL)
{
/* Set strict mode */
slave->gtid_strict_mode = atoi(word);
MXS_FREE(query_text);
return blr_slave_send_ok(router, slave);
}
}
else if (strcasecmp(word, "@slave_gtid_ignore_duplicates") == 0)
{
/* If not mariadb an error message will be returned */
if (slave->mariadb10_compat &&
router->mariadb_gtid)
{
MXS_FREE(query_text);
return blr_slave_send_ok(router, slave);
}
}
else if (strcasecmp(word, "NAMES") == 0)
{
if ((word = strtok_r(NULL, sep, &brkb)) == NULL)