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Willy TARREAU3dc06442006-06-15 21:48:13 +02001/*
Willy Tarreauac68c5d2009-10-04 23:12:44 +02002 * include/proto/server.h
3 * This file defines everything related to servers.
4 *
5 * Copyright (C) 2000-2009 Willy Tarreau - w@1wt.eu
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation, version 2.1
10 * exclusively.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
Willy TARREAU3dc06442006-06-15 21:48:13 +020021
Willy Tarreaubaaee002006-06-26 02:48:02 +020022#ifndef _PROTO_SERVER_H
23#define _PROTO_SERVER_H
24
25#include <unistd.h>
26
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020027#include <common/config.h>
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -050028#include <common/time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020029#include <types/proxy.h>
30#include <types/queue.h>
31#include <types/server.h>
Willy TARREAU3dc06442006-06-15 21:48:13 +020032
Willy Tarreaubaaee002006-06-26 02:48:02 +020033#include <proto/queue.h>
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -050034#include <proto/log.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +010035#include <proto/freq_ctr.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020036
Simon Hormana3608442013-11-01 16:46:15 +090037int srv_downtime(const struct server *s);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -050038int srv_lastsession(const struct server *s);
Simon Horman4a741432013-02-23 15:35:38 +090039int srv_getinter(const struct check *check);
Willy Tarreau272adea2014-03-31 10:39:59 +020040int parse_server(const char *file, int linenum, char **args, struct proxy *curproxy, struct proxy *defproxy);
Willy Tarreaubaaee002006-06-26 02:48:02 +020041
Willy Tarreau7f062c42009-03-05 18:43:00 +010042/* increase the number of cumulated connections on the designated server */
43static void inline srv_inc_sess_ctr(struct server *s)
44{
Krzysztof Piotr Oledzki052d4fd2009-10-04 14:52:57 +020045 s->counters.cum_sess++;
Willy Tarreau7f062c42009-03-05 18:43:00 +010046 update_freq_ctr(&s->sess_per_sec, 1);
Willy Tarreauac68c5d2009-10-04 23:12:44 +020047 if (s->sess_per_sec.curr_ctr > s->counters.sps_max)
48 s->counters.sps_max = s->sess_per_sec.curr_ctr;
Willy Tarreau7f062c42009-03-05 18:43:00 +010049}
50
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -050051/* set the time of last session on the designated server */
52static void inline srv_set_sess_last(struct server *s)
53{
54 s->counters.last_sess = now.tv_sec;
55}
56
Willy Tarreaubaaee002006-06-26 02:48:02 +020057#endif /* _PROTO_SERVER_H */
Willy TARREAU3dc06442006-06-15 21:48:13 +020058
Willy Tarreaubaaee002006-06-26 02:48:02 +020059/*
Willy Tarreau21faa912012-10-10 08:27:36 +020060 * Registers the server keyword list <kwl> as a list of valid keywords for next
61 * parsing sessions.
62 */
63void srv_register_keywords(struct srv_kw_list *kwl);
64
65/* Return a pointer to the server keyword <kw>, or NULL if not found. */
66struct srv_kw *srv_find_kw(const char *kw);
67
68/* Dumps all registered "server" keywords to the <out> string pointer. */
69void srv_dump_kws(char **out);
70
Willy Tarreau004e0452013-11-21 11:22:01 +010071/* Recomputes the server's eweight based on its state, uweight, the current time,
72 * and the proxy's algorihtm. To be used after updating sv->uweight. The warmup
73 * state is automatically disabled if the time is elapsed.
74 */
75void server_recalc_eweight(struct server *sv);
76
Willy Tarreaud32c3992013-11-21 15:30:45 +010077/* returns the current server throttle rate between 0 and 100% */
78static inline unsigned int server_throttle_rate(struct server *sv)
79{
80 struct proxy *px = sv->proxy;
81
82 /* when uweight is 0, we're in soft-stop so that cannot be a slowstart,
83 * thus the throttle is 100%.
84 */
85 if (!sv->uweight)
86 return 100;
87
Willy Tarreaue38feed2013-12-16 18:04:57 +010088 return (100U * px->lbprm.wmult * sv->eweight + px->lbprm.wdiv - 1) / (px->lbprm.wdiv * sv->uweight);
Willy Tarreaud32c3992013-11-21 15:30:45 +010089}
90
Willy Tarreau21faa912012-10-10 08:27:36 +020091/*
Simon Horman7d09b9a2013-02-12 10:45:51 +090092 * Parses weight_str and configures sv accordingly.
93 * Returns NULL on success, error message string otherwise.
94 */
95const char *server_parse_weight_change_request(struct server *sv,
96 const char *weight_str);
97
98/*
Simon Horman8c3d0be2013-11-25 10:46:40 +090099 * Update the server's drain state to reflect its user-weight. This is not
100 * done immediately to allow a discrepancy between the server's user-weight
101 * and drains state to control logging of changes in the drain state.
102 */
103static inline void set_server_drain_state(struct server *s)
104{
105 if (!s->uweight)
106 s->state |= SRV_DRAIN;
107 else
108 s->state &= ~SRV_DRAIN;
109}
110/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200111 * Local variables:
112 * c-indent-level: 8
113 * c-basic-offset: 8
114 * End:
115 */