blob: 8a4696297465f0f4a527f0f09ab6f11190eef397 [file] [log] [blame]
/*
* Server management functions.
*
* Copyright 2000-2008 Willy Tarreau <w@1wt.eu>
*
* This program 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; either version
* 2 of the License, or (at your option) any later version.
*
*/
#include <stdlib.h>
#include <common/config.h>
#include <common/debug.h>
#include <common/memory.h>
#include <types/capture.h>
#include <proto/buffers.h>
#include <proto/hdr_idx.h>
#include <proto/log.h>
#include <proto/session.h>
#include <proto/queue.h>
struct pool_head *pool2_session;
struct list sessions;
/*
* frees the context associated to a session. It must have been removed first.
*/
void session_free(struct session *s)
{
struct http_txn *txn = &s->txn;
struct proxy *fe = s->fe;
if (s->pend_pos)
pendconn_free(s->pend_pos);
if (s->srv) { /* there may be requests left pending in queue */
if (s->flags & SN_CURR_SESS) {
s->flags &= ~SN_CURR_SESS;
s->srv->cur_sess--;
}
process_srv_queue(s->srv);
}
if (unlikely(s->srv_conn)) {
/* the session still has a reserved slot on a server, but
* it should normally be only the same as the one above,
* so this should not happen in fact.
*/
sess_change_server(s, NULL);
}
pool_free2(pool2_buffer, s->req);
pool_free2(pool2_buffer, s->rep);
if (fe) {
pool_free2(fe->hdr_idx_pool, txn->hdr_idx.v);
if (txn->rsp.cap != NULL) {
struct cap_hdr *h;
for (h = fe->rsp_cap; h; h = h->next)
pool_free2(h->pool, txn->rsp.cap[h->index]);
pool_free2(fe->rsp_cap_pool, txn->rsp.cap);
}
if (txn->req.cap != NULL) {
struct cap_hdr *h;
for (h = fe->req_cap; h; h = h->next)
pool_free2(h->pool, txn->req.cap[h->index]);
pool_free2(fe->req_cap_pool, txn->req.cap);
}
}
pool_free2(pool2_requri, txn->uri);
pool_free2(pool2_capture, txn->cli_cookie);
pool_free2(pool2_capture, txn->srv_cookie);
LIST_DEL(&s->list);
pool_free2(pool2_session, s);
/* We may want to free the maximum amount of pools if the proxy is stopping */
if (fe && unlikely(fe->state == PR_STSTOPPED)) {
pool_flush2(pool2_buffer);
pool_flush2(fe->hdr_idx_pool);
pool_flush2(pool2_requri);
pool_flush2(pool2_capture);
pool_flush2(pool2_session);
pool_flush2(fe->req_cap_pool);
pool_flush2(fe->rsp_cap_pool);
}
}
/* perform minimal intializations, report 0 in case of error, 1 if OK. */
int init_session()
{
LIST_INIT(&sessions);
pool2_session = create_pool("session", sizeof(struct session), MEM_F_SHARED);
return pool2_session != NULL;
}
void session_process_counters(struct session *s)
{
unsigned long long bytes;
if (s->req) {
bytes = s->req->total - s->logs.bytes_in;
s->logs.bytes_in = s->req->total;
if (bytes) {
s->fe->bytes_in += bytes;
if (s->be != s->fe)
s->be->bytes_in += bytes;
if (s->srv)
s->srv->bytes_in += bytes;
}
}
if (s->rep) {
bytes = s->rep->total - s->logs.bytes_out;
s->logs.bytes_out = s->rep->total;
if (bytes) {
s->fe->bytes_out += bytes;
if (s->be != s->fe)
s->be->bytes_out += bytes;
if (s->srv)
s->srv->bytes_out += bytes;
}
}
}
/*
* This function adjusts sess->srv_conn and maintains the previous and new
* server's served session counts. Setting newsrv to NULL is enough to release
* current connection slot. This function also notifies any LB algo which might
* expect to be informed about any change in the number of active sessions on a
* server.
*/
void sess_change_server(struct session *sess, struct server *newsrv)
{
if (sess->srv_conn == newsrv)
return;
if (sess->srv_conn) {
sess->srv_conn->served--;
if (sess->srv_conn->proxy->lbprm.server_drop_conn)
sess->srv_conn->proxy->lbprm.server_drop_conn(sess->srv_conn);
sess->srv_conn = NULL;
}
if (newsrv) {
newsrv->served++;
if (newsrv->proxy->lbprm.server_take_conn)
newsrv->proxy->lbprm.server_take_conn(newsrv);
sess->srv_conn = newsrv;
}
}
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/