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Router has now capability value which currently tells whether router session expects stream or individual, complete statements. With read con

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nection router stream is used and with read/write split router individual statements are passed to router.
Added new function to ROUTER_OBJECT : uint8_t (*getCapabilities)(ROUTER *instance, void* router_session); which is implemented in every route
r.

Added support for multi-statement packets in rwsplit router. In other words, if network packet includes multiple mysql statements, they are separated and passed to router one by one.

Multi-packet statements (those which exceeds network packet boundaries) are _not_ supported yet.
This commit is contained in:
VilhoRaatikka
2014-03-11 23:12:11 +02:00
parent c28892323a
commit cb6a976555
13 changed files with 701 additions and 422 deletions
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4
server/modules/protocol/mysql_backend.c
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@ -856,7 +856,7 @@ static int gw_change_user(DCB *backend, SERVER *server, SESSION *in_session, GWB
backend_protocol = backend->protocol;
client_protocol = in_session->client->protocol;
queue->command = ROUTER_CHANGE_SESSION;
// queue->command = ROUTER_CHANGE_SESSION;
// now get the user, after 4 bytes header and 1 byte command
client_auth_packet += 5;
@ -939,7 +939,7 @@ static int gw_session(DCB *backend_dcb, void *data) {
GWBUF *queue = NULL;
queue = (GWBUF *) data;
queue->command = ROUTER_CHANGE_SESSION;
// queue->command = ROUTER_CHANGE_SESSION;
backend_dcb->func.write(backend_dcb, queue);
return 1;