80 lines
2.6 KiB
C
80 lines
2.6 KiB
C
#ifndef _SESSION_H
|
|
#define _SESSION_H
|
|
/*
|
|
* This file is distributed as part of the SkySQL Gateway. It is free
|
|
* software: you can redistribute it and/or modify it under the terms of the
|
|
* GNU General Public License as published by the Free Software Foundation,
|
|
* version 2.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
|
* details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program; if not, write to the Free Software Foundation, Inc., 51
|
|
* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Copyright SkySQL Ab 2013
|
|
*/
|
|
|
|
/**
|
|
* @file session.h
|
|
*
|
|
* @verbatim
|
|
* Revision History
|
|
*
|
|
* Date Who Description
|
|
* 01-06-2013 Mark Riddoch Initial implementation
|
|
* 14-06-2013 Massimiliano Pinto Added void *data to session
|
|
* for session specific data
|
|
* 01-07-2013 Massimiliano Pinto Removed backends pointer
|
|
from struct session
|
|
* @endverbatim
|
|
*/
|
|
#include <time.h>
|
|
|
|
struct dcb;
|
|
struct service;
|
|
|
|
/**
|
|
* The session statistics structure
|
|
*/
|
|
typedef struct {
|
|
time_t connect; /**< Time when the session was started */
|
|
} SESSION_STATS;
|
|
|
|
/**
|
|
* The session status block
|
|
*
|
|
* A session status block is created for each user (client) connection
|
|
* to the database, it links the descriptors, routing implementation
|
|
* and originating service together for the client session.
|
|
*/
|
|
typedef struct session {
|
|
int state; /**< Current descriptor state */
|
|
struct dcb *client; /**< The client connection */
|
|
struct dcb *backends; /**< The set of backend servers */
|
|
void *data; /**< The session data */
|
|
void *router_session;/**< The router instance data */
|
|
SESSION_STATS stats; /**< Session statistics */
|
|
struct service *service; /**< The service this session is using */
|
|
struct session *next; /**< Linked list of all sessions */
|
|
} SESSION;
|
|
|
|
#define SESSION_STATE_ALLOC 0 /**< The session has been allocated */
|
|
#define SESSION_STATE_READY 1 /**< The session is ready to route queries */
|
|
#define SESSION_STATE_LISTENER 2 /**< The session is a running listener */
|
|
#define SESSION_STATE_LISTENER_STOPPED 3 /**< The session listener is stopped */
|
|
|
|
#define SESSION_PROTOCOL(x, type) DCB_PROTOCOL((x)->client, type)
|
|
|
|
extern SESSION *session_alloc(struct service *, struct dcb *);
|
|
extern void session_free(SESSION *);
|
|
extern void printAllSessions();
|
|
extern void printSession(SESSION *);
|
|
extern void dprintAllSessions(struct dcb *);
|
|
extern void dprintSession(struct dcb *, SESSION *);
|
|
extern char *session_state(int);
|
|
#endif
|