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http://git.haproxy.org/git/haproxy.git/
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a20cb85eba
Summary:
Track and report last session time on the stats page for each server
in every backend, as well as the backend.
This attempts to address the requirement in the ROADMAP
- add a last activity date for each server (req/resp) that will be
displayed in the stats. It will be useful with soft stop.
The stats page reports this as time elapsed since last session. This
change does not adequately address the requirement for long running
session (websocket, RDP... etc).
115 lines
3.4 KiB
C
115 lines
3.4 KiB
C
/*
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* include/proto/server.h
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* This file defines everything related to servers.
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*
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* Copyright (C) 2000-2009 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _PROTO_SERVER_H
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#define _PROTO_SERVER_H
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#include <unistd.h>
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#include <common/config.h>
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#include <common/time.h>
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#include <types/proxy.h>
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#include <types/queue.h>
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#include <types/server.h>
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#include <proto/queue.h>
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#include <proto/log.h>
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#include <proto/freq_ctr.h>
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int srv_downtime(const struct server *s);
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int srv_lastsession(const struct server *s);
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int srv_getinter(const struct check *check);
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/* increase the number of cumulated connections on the designated server */
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static void inline srv_inc_sess_ctr(struct server *s)
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{
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s->counters.cum_sess++;
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update_freq_ctr(&s->sess_per_sec, 1);
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if (s->sess_per_sec.curr_ctr > s->counters.sps_max)
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s->counters.sps_max = s->sess_per_sec.curr_ctr;
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}
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/* set the time of last session on the designated server */
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static void inline srv_set_sess_last(struct server *s)
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{
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s->counters.last_sess = now.tv_sec;
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}
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#endif /* _PROTO_SERVER_H */
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/*
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* Registers the server keyword list <kwl> as a list of valid keywords for next
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* parsing sessions.
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*/
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void srv_register_keywords(struct srv_kw_list *kwl);
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/* Return a pointer to the server keyword <kw>, or NULL if not found. */
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struct srv_kw *srv_find_kw(const char *kw);
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/* Dumps all registered "server" keywords to the <out> string pointer. */
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void srv_dump_kws(char **out);
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/* Recomputes the server's eweight based on its state, uweight, the current time,
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* and the proxy's algorihtm. To be used after updating sv->uweight. The warmup
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* state is automatically disabled if the time is elapsed.
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*/
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void server_recalc_eweight(struct server *sv);
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/* returns the current server throttle rate between 0 and 100% */
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static inline unsigned int server_throttle_rate(struct server *sv)
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{
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struct proxy *px = sv->proxy;
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/* when uweight is 0, we're in soft-stop so that cannot be a slowstart,
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* thus the throttle is 100%.
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*/
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if (!sv->uweight)
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return 100;
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return (100U * px->lbprm.wmult * sv->eweight + px->lbprm.wdiv - 1) / (px->lbprm.wdiv * sv->uweight);
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}
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/*
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* Parses weight_str and configures sv accordingly.
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* Returns NULL on success, error message string otherwise.
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*/
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const char *server_parse_weight_change_request(struct server *sv,
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const char *weight_str);
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/*
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* Update the server's drain state to reflect its user-weight. This is not
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* done immediately to allow a discrepancy between the server's user-weight
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* and drains state to control logging of changes in the drain state.
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*/
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static inline void set_server_drain_state(struct server *s)
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{
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if (!s->uweight)
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s->state |= SRV_DRAIN;
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else
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s->state &= ~SRV_DRAIN;
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}
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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