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Complementory fix to bug #694, http://bugs.mariadb.com/show_bug.cgi?id=694

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Added new error action to router.h, added functionality to reset error flag from DCB in handleError. Error is reset before every new routing call.
This commit is contained in:
VilhoRaatikka 2015-01-16 11:13:42 +02:00
parent c5c9165a26
commit da77da803b
3 changed files with 35 additions and 17 deletions
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3
server/include/router.h
View File

@ -68,7 +68,8 @@ typedef void *ROUTER;
*/
typedef enum error_action {
ERRACT_NEW_CONNECTION = 0x001,
ERRACT_REPLY_CLIENT = 0x002
ERRACT_REPLY_CLIENT = 0x002,
ERRACT_RESET = 0x004
} error_action_t;

42
server/modules/protocol/mysql_client.c
View File

@ -759,7 +759,7 @@ int gw_read_client_event(
* else : write custom error to client dcb.
*/
if(rsession == NULL)
{
{
/** COM_QUIT */
if (MYSQL_IS_COM_QUIT(payload))
{
@ -776,7 +776,7 @@ int gw_read_client_event(
*/
dcb_close(dcb);
}
else
else
{
#if defined(SS_DEBUG)
LOGIF(LE, (skygw_log_write_flush(
@ -843,6 +843,8 @@ int gw_read_client_event(
}
else
{
router->handleError(NULL, NULL, NULL, dcb, ERRACT_RESET, NULL);
if (stmt_input)
{
/**
@ -872,17 +874,25 @@ int gw_read_client_event(
{
bool succp;
GWBUF* errbuf;
/**
* Send error message indicating that routing
* failed
* Create error to be sent to client if session
* can't be continued.
*/
mysql_send_custom_error(
dcb,
errbuf = mysql_create_custom_error(
1,
0,
"Routing query to backend failed. See "
"the error log for further details.");
"Routing query to backend failed. See "
"the error log for further details.");
router->handleError(
router_instance,
session->router_session,
errbuf,
dcb,
ERRACT_REPLY_CLIENT,
&succp);
free(errbuf);
/**
* Create error to be sent to client if session
* can't be continued.
@ -896,12 +906,12 @@ int gw_read_client_event(
* available.
*/
router->handleError(
router_instance,
session->router_session,
errbuf,
dcb,
ERRACT_NEW_CONNECTION,
&succp);
router_instance,
session->router_session,
errbuf,
dcb,
ERRACT_NEW_CONNECTION,
&succp);
free(errbuf);
/**
* If there are not enough backends close
@ -1587,7 +1597,7 @@ static int route_by_statement(
goto return_rc;
}
}
while (*p_readbuf != NULL);
while (rc == 1 && *p_readbuf != NULL);
return_rc:
return rc;

7
server/modules/routing/readwritesplit/readwritesplit.c
View File

@ -4407,6 +4407,13 @@ static void handleError (
CHK_DCB(backend_dcb);
/** Reset error handle flag from a given DCB */
if (action == ERRACT_RESET)
{
backend_dcb->dcb_errhandle_called = false;
return;
}
/** Don't handle same error twice on same DCB */
if (backend_dcb->dcb_errhandle_called)
{