blob: f030962a3543f49a3bfc8332170cf7bb74463a85 [file] [log] [blame]
/*
* include/proto/server.h
* This file defines everything related to servers.
*
* Copyright (C) 2000-2009 Willy Tarreau - w@1wt.eu
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _PROTO_SERVER_H
#define _PROTO_SERVER_H
#include <unistd.h>
#include <common/config.h>
#include <common/time.h>
#include <types/proxy.h>
#include <types/queue.h>
#include <types/server.h>
#include <proto/queue.h>
#include <proto/log.h>
#include <proto/freq_ctr.h>
int srv_downtime(const struct server *s);
int srv_lastsession(const struct server *s);
int srv_getinter(const struct check *check);
int parse_server(const char *file, int linenum, char **args, struct proxy *curproxy, struct proxy *defproxy);
/* increase the number of cumulated connections on the designated server */
static void inline srv_inc_sess_ctr(struct server *s)
{
s->counters.cum_sess++;
update_freq_ctr(&s->sess_per_sec, 1);
if (s->sess_per_sec.curr_ctr > s->counters.sps_max)
s->counters.sps_max = s->sess_per_sec.curr_ctr;
}
/* set the time of last session on the designated server */
static void inline srv_set_sess_last(struct server *s)
{
s->counters.last_sess = now.tv_sec;
}
#endif /* _PROTO_SERVER_H */
/*
* Registers the server keyword list <kwl> as a list of valid keywords for next
* parsing sessions.
*/
void srv_register_keywords(struct srv_kw_list *kwl);
/* Return a pointer to the server keyword <kw>, or NULL if not found. */
struct srv_kw *srv_find_kw(const char *kw);
/* Dumps all registered "server" keywords to the <out> string pointer. */
void srv_dump_kws(char **out);
/* Recomputes the server's eweight based on its state, uweight, the current time,
* and the proxy's algorihtm. To be used after updating sv->uweight. The warmup
* state is automatically disabled if the time is elapsed.
*/
void server_recalc_eweight(struct server *sv);
/* returns the current server throttle rate between 0 and 100% */
static inline unsigned int server_throttle_rate(struct server *sv)
{
struct proxy *px = sv->proxy;
/* when uweight is 0, we're in soft-stop so that cannot be a slowstart,
* thus the throttle is 100%.
*/
if (!sv->uweight)
return 100;
return (100U * px->lbprm.wmult * sv->eweight + px->lbprm.wdiv - 1) / (px->lbprm.wdiv * sv->uweight);
}
/*
* Parses weight_str and configures sv accordingly.
* Returns NULL on success, error message string otherwise.
*/
const char *server_parse_weight_change_request(struct server *sv,
const char *weight_str);
/*
* Update the server's drain state to reflect its user-weight. This is not
* done immediately to allow a discrepancy between the server's user-weight
* and drains state to control logging of changes in the drain state.
*/
static inline void set_server_drain_state(struct server *s)
{
if (!s->uweight)
s->state |= SRV_DRAIN;
else
s->state &= ~SRV_DRAIN;
}
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/