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MySQL connect async routines use read/write from/to socket instead of dcb

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This commit is contained in:
Massimiliano Pinto 2013-07-02 16:51:10 +02:00
parent cd692bc020
commit 24079799fa
1 changed files with 17 additions and 4 deletions
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21
modules/protocol/mysql_common.c
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@ -22,6 +22,7 @@
* Revision History
* Date Who Description
* 17/06/2013 Massimiliano Pinto Common MySQL protocol routines
* 02/06/2013 Massimiliano Pinto MySQL connect asynchronous phases
*/
#include "mysql_client_server_protocol.h"
@ -89,19 +90,25 @@ void gw_mysql_close(MySQLProtocol **ptr) {
#endif
}
/*
* Read the backend server handshake
/**
* Read the backend server MySQL handshake
*
* @param conn MySQL protocol structure
* @return 0 on success, 1 on failure
*/
int gw_read_backend_handshake(MySQLProtocol *conn) {
GWBUF *head = NULL;
DCB *dcb = conn->descriptor;
int n = -1;
uint8_t *payload = NULL;
unsigned int packet_len = 0;
if ((n = dcb_read(dcb, &head)) != -1) {
dcb->state = DCB_STATE_PROCESSING;
if (head) {
payload = GWBUF_DATA(head);
packet_len = gw_mysql_get_byte3(payload);
// skip the 4 bytes header
payload += 4;
@ -201,11 +208,15 @@ int gw_receive_backend_auth(MySQLProtocol *conn) {
int n = -1;
GWBUF *head = NULL;
DCB *dcb = conn->descriptor;
uint8_t *ptr = NULL;
unsigned int packet_len = 0;
if ((n = dcb_read(dcb, &head)) != -1) {
dcb->state = DCB_STATE_PROCESSING;
if (head) {
uint8_t *ptr = GWBUF_DATA(head);
ptr = GWBUF_DATA(head);
packet_len = gw_mysql_get_byte3(ptr);
// check if the auth is SUCCESFUL
if (ptr[4] == '\x00') {
// Auth is OK
@ -401,7 +412,9 @@ int gw_send_authentication_to_backend(char *dbname, char *user, uint8_t *passwd,
gw_mysql_set_byte3(payload_start, (bytes-4));
// write to backend dcb
rv = dcb->func.write(dcb, buffer);
// ToDO: handle the EAGAIN | EWOULDBLOCK
rv = write(dcb->fd, GWBUF_DATA(buffer), bytes);
gwbuf_consume(buffer, bytes);
conn->state = MYSQL_AUTH_RECV;