hcq/MaxScale
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Added checks that the query was cloned in clientReply before waiting for a reply.

Browse Source
This commit is contained in:
Markus Makela
2014-12-30 23:05:13 +02:00
parent 9a77509e6a
commit 073db0f1e2
2 changed files with 30 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

69
server/modules/filter/tee.c
View File

@ -59,6 +59,7 @@
#include <router.h>
#include <dcb.h>
#include <sys/time.h>
#include <poll.h>
#define MYSQL_COM_QUIT 0x01
#define MYSQL_COM_INITDB 0x02
@ -70,8 +71,8 @@
#define MYSQL_COM_STMT_CLOSE 0x19
#define MYSQL_COM_STMT_RESET 0x1a
#define REPLY_TIMEOUT_SECOND 2
#define REPLY_TIMEOUT_MILLISECOND 500
#define REPLY_TIMEOUT_SECOND 5
#define REPLY_TIMEOUT_MILLISECOND 1
static unsigned char required_packets[] = {
MYSQL_COM_QUIT,
@ -150,6 +151,7 @@ typedef struct {
DOWNSTREAM down; /* The downstream filter */
UPSTREAM up; /* The upstream filter */
int active; /* filter is active? */
int waiting; /* if the client is waiting for a reply */
DCB *branch_dcb; /* Client DCB for "branch" service */
SESSION *branch_session;/* The branch service session */
int n_duped; /* Number of duplicated queries */
@ -184,7 +186,6 @@ static int hcfn(
return strcmp(i1,i2);
}
/**
* Implementation of the mandatory version entry point
*
@ -419,7 +420,7 @@ char *remote, *userName;
goto retblock;
}
ss_dassert(ses->ses_is_child);
my_session->branch_session = ses;
my_session->branch_session = ses;
my_session->branch_dcb = dcb;
}
}
@ -467,6 +468,7 @@ SESSION *bsession;
* a side effect of closing the client DCB of the
* session.
*/
my_session->active = 0;
}
}
@ -610,10 +612,12 @@ GWBUF *clone = NULL;
if (clone)
{
my_session->n_duped++;
if (my_session->branch_session->state == SESSION_STATE_ROUTER_READY)
{
SESSION_ROUTE_QUERY(my_session->branch_session, clone);
my_session->waiting = 1;
SESSION_ROUTE_QUERY(my_session->branch_session, clone);
}
else
{
@ -655,25 +659,25 @@ static int clientReply(FILTER* instance, void *session, GWBUF *reply)
TEE_SESSION *my_session = (TEE_SESSION *)session;
DCB* dcb;
SESSION *bsession;
ROUTER_OBJECT *router;
void *router_instance, *rsession;
double duration = 0.0, timeout = 0.0;
struct timeval start,now,diff,limit;
limit.tv_sec = REPLY_TIMEOUT_SECOND;
limit.tv_usec = REPLY_TIMEOUT_MILLISECOND*1000;
struct timeval start,now,diff;
bool do_check;
timeout = REPLY_TIMEOUT_SECOND;
timeout += (double)((REPLY_TIMEOUT_MILLISECOND + 1.0) / 1000.0);
timerclear(&diff);
gettimeofday(&start, NULL);
if(my_session->branch_session)
if(my_session->branch_session && my_session->waiting)
{
dcb = my_session->branch_session->client;
spinlock_acquire(&my_session->branch_dcb->authlock);
dcb = my_session->branch_dcb;
do_check = !DCB_REPLIED(dcb);
spinlock_release(&my_session->branch_dcb->authlock);
while(!DCB_REPLIED(dcb))
while(do_check)
{
gettimeofday(&now, NULL);
timersub(&now,&start,&diff);
@ -690,39 +694,24 @@ static int clientReply(FILTER* instance, void *session, GWBUF *reply)
*/
bsession = my_session->branch_session;
if (bsession)
{
CHK_SESSION(bsession);
spinlock_acquire(&bsession->ses_lock);
if (bsession->state != SESSION_STATE_STOPPING)
{
bsession->state = SESSION_STATE_STOPPING;
}
router = bsession->service->router;
router_instance = bsession->service->router_instance;
rsession = bsession->router_session;
spinlock_release(&bsession->ses_lock);
/** Close router session and all its connections */
router->closeSession(router_instance, rsession);
my_session->branch_session = NULL;
skygw_log_write(LOGFILE_TRACE,"tee.c: Branch session not replying fast enough, closing session.",duration);
}
bsession->ses_is_child = false;
session_free(bsession);
my_session->branch_session = NULL;
skygw_log_write(LOGFILE_TRACE,"tee.c: Branch session not replying fast enough, closing session.");
break;
}
thread_millisleep(1);
spinlock_acquire(&dcb->authlock);
do_check = !DCB_REPLIED(dcb);
spinlock_release(&dcb->authlock);
}
if(duration > 0.0)
{
skygw_log_write(LOGFILE_TRACE,"tee.c: Waited for %.4f seconds for branch session reply.",duration);
skygw_log_write_flush(LOGFILE_TRACE,"tee.c: Waited for %.4f seconds for branch session reply.",duration);
}
my_session->waiting = 0;
}
return my_session->up.clientReply(my_session->up.instance,