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Initial upstream fitlering implementation.

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Test filter with up and down stream filtering. Keeps top N queries
and prints a report of these queries on session close.
This commit is contained in:
Mark Riddoch
2014-06-09 21:13:28 +01:00
parent 9e164b83f0
commit 77e1426dbf
12 changed files with 519 additions and 14 deletions
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35
server/core/session.c
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@ -164,9 +164,12 @@ session_alloc(SERVICE *service, DCB *client_dcb)
*/
session->head.instance = service->router_instance;
session->head.session = session->router_session;
session->head.routeQuery = service->router->routeQuery;
session->tail.instance = session;
session->tail.session = session;
session->tail.clientReply = session_reply;
if (service->n_filters > 0)
{
if (!session_setup_filters(session))
@ -315,6 +318,12 @@ bool session_free(
}
if (session->n_filters)
{
for (i = 0; i < session->n_filters; i++)
{
session->filters[i].filter->obj->closeSession(
session->filters[i].instance,
session->filters[i].session);
}
for (i = 0; i < session->n_filters; i++)
{
session->filters[i].filter->obj->freeSession(
@ -610,6 +619,7 @@ session_setup_filters(SESSION *session)
{
SERVICE *service = session->service;
DOWNSTREAM *head;
UPSTREAM *tail;
int i;
if ((session->filters = calloc(service->n_filters,
@ -640,5 +650,28 @@ int i;
session->head = *head;
}
for (i = 0; i < service->n_filters; i++)
{
if ((tail = filterUpstream(service->filters[i],
session->filters[i].session,
&session->tail)) == NULL)
{
LOGIF(LE, (skygw_log_write_flush(
LOGFILE_ERROR,
"Failed to create filter '%s' for service '%s'.\n",
service->filters[i]->name,
service->name)));
return 0;
}
session->tail = *tail;
}
return 1;
}
int
session_reply(void *instance, void *session, GWBUF *data)
{
SESSION *the_session = (SESSION *)session;
return the_session->client->func.write(the_session->client, data);
}