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204 lines
6.6 KiB
204 lines
6.6 KiB
/*
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* include/haproxy/proxy.h
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* This file defines function prototypes for proxy management.
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*
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* Copyright (C) 2000-2011 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 _HAPROXY_PROXY_H
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#define _HAPROXY_PROXY_H
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#include <haproxy/api.h>
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#include <haproxy/applet-t.h>
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#include <haproxy/freq_ctr.h>
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#include <haproxy/listener-t.h>
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#include <haproxy/proxy-t.h>
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#include <haproxy/server-t.h>
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#include <haproxy/ticks.h>
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#include <haproxy/time.h>
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extern struct proxy *proxies_list;
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extern struct eb_root used_proxy_id; /* list of proxy IDs in use */
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extern unsigned int error_snapshot_id; /* global ID assigned to each error then incremented */
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extern struct eb_root proxy_by_name; /* tree of proxies sorted by name */
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extern const struct cfg_opt cfg_opts[];
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extern const struct cfg_opt cfg_opts2[];
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struct task *manage_proxy(struct task *t, void *context, unsigned short state);
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void proxy_cond_disable(struct proxy *p);
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void soft_stop(void);
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int pause_proxy(struct proxy *p);
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int resume_proxy(struct proxy *p);
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void stop_proxy(struct proxy *p);
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int stream_set_backend(struct stream *s, struct proxy *be);
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const char *proxy_cap_str(int cap);
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const char *proxy_mode_str(int mode);
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void proxy_store_name(struct proxy *px);
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struct proxy *proxy_find_by_id(int id, int cap, int table);
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struct proxy *proxy_find_by_name(const char *name, int cap, int table);
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struct proxy *proxy_find_best_match(int cap, const char *name, int id, int *diff);
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struct server *findserver(const struct proxy *px, const char *name);
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int proxy_cfg_ensure_no_http(struct proxy *curproxy);
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void init_new_proxy(struct proxy *p);
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int get_backend_server(const char *bk_name, const char *sv_name,
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struct proxy **bk, struct server **sv);
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void proxy_capture_error(struct proxy *proxy, int is_back,
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struct proxy *other_end, enum obj_type *target,
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const struct session *sess,
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const struct buffer *buf, long buf_ofs,
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unsigned int buf_out, unsigned int err_pos,
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const union error_snapshot_ctx *ctx,
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void (*show)(struct buffer *, const struct error_snapshot *));
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void proxy_adjust_all_maxconn();
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struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg);
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struct proxy *cli_find_frontend(struct appctx *appctx, const char *arg);
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/*
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* This function returns a string containing the type of the proxy in a format
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* suitable for error messages, from its capabilities.
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*/
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static inline const char *proxy_type_str(struct proxy *proxy)
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{
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return proxy_cap_str(proxy->cap);
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}
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/* Find the frontend having name <name>. The name may also start with a '#' to
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* reference a numeric id. NULL is returned if not found.
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*/
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static inline struct proxy *proxy_fe_by_name(const char *name)
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{
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return proxy_find_by_name(name, PR_CAP_FE, 0);
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}
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/* Find the backend having name <name>. The name may also start with a '#' to
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* reference a numeric id. NULL is returned if not found.
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*/
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static inline struct proxy *proxy_be_by_name(const char *name)
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{
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return proxy_find_by_name(name, PR_CAP_BE, 0);
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}
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/* this function initializes all timeouts for proxy p */
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static inline void proxy_reset_timeouts(struct proxy *proxy)
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{
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proxy->timeout.client = TICK_ETERNITY;
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proxy->timeout.tarpit = TICK_ETERNITY;
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proxy->timeout.queue = TICK_ETERNITY;
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proxy->timeout.connect = TICK_ETERNITY;
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proxy->timeout.server = TICK_ETERNITY;
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proxy->timeout.httpreq = TICK_ETERNITY;
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proxy->timeout.check = TICK_ETERNITY;
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proxy->timeout.tunnel = TICK_ETERNITY;
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}
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/* increase the number of cumulated connections received on the designated frontend */
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static inline void proxy_inc_fe_conn_ctr(struct listener *l, struct proxy *fe)
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{
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_HA_ATOMIC_ADD(&fe->fe_counters.cum_conn, 1);
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if (l->counters)
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_HA_ATOMIC_ADD(&l->counters->cum_conn, 1);
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HA_ATOMIC_UPDATE_MAX(&fe->fe_counters.cps_max,
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update_freq_ctr(&fe->fe_conn_per_sec, 1));
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}
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/* increase the number of cumulated connections accepted by the designated frontend */
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static inline void proxy_inc_fe_sess_ctr(struct listener *l, struct proxy *fe)
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{
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_HA_ATOMIC_ADD(&fe->fe_counters.cum_sess, 1);
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if (l->counters)
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_HA_ATOMIC_ADD(&l->counters->cum_sess, 1);
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HA_ATOMIC_UPDATE_MAX(&fe->fe_counters.sps_max,
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update_freq_ctr(&fe->fe_sess_per_sec, 1));
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}
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/* increase the number of cumulated connections on the designated backend */
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static inline void proxy_inc_be_ctr(struct proxy *be)
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{
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_HA_ATOMIC_ADD(&be->be_counters.cum_conn, 1);
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HA_ATOMIC_UPDATE_MAX(&be->be_counters.sps_max,
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update_freq_ctr(&be->be_sess_per_sec, 1));
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}
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/* increase the number of cumulated requests on the designated frontend */
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static inline void proxy_inc_fe_req_ctr(struct listener *l, struct proxy *fe)
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{
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_HA_ATOMIC_ADD(&fe->fe_counters.p.http.cum_req, 1);
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if (l->counters)
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_HA_ATOMIC_ADD(&l->counters->p.http.cum_req, 1);
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HA_ATOMIC_UPDATE_MAX(&fe->fe_counters.p.http.rps_max,
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update_freq_ctr(&fe->fe_req_per_sec, 1));
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}
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/* Returns non-zero if the proxy is configured to retry a request if we got that status, 0 otherwise */
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static inline int l7_status_match(struct proxy *p, int status)
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{
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/* Just return 0 if no retry was configured for any status */
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if (!(p->retry_type & PR_RE_STATUS_MASK))
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return 0;
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switch (status) {
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case 401:
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return (p->retry_type & PR_RE_401);
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case 403:
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return (p->retry_type & PR_RE_403);
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case 404:
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return (p->retry_type & PR_RE_404);
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case 408:
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return (p->retry_type & PR_RE_408);
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case 425:
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return (p->retry_type & PR_RE_425);
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case 500:
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return (p->retry_type & PR_RE_500);
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case 501:
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return (p->retry_type & PR_RE_501);
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case 502:
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return (p->retry_type & PR_RE_502);
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case 503:
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return (p->retry_type & PR_RE_503);
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case 504:
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return (p->retry_type & PR_RE_504);
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default:
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break;
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}
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return 0;
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}
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/* Return 1 if <p> proxy is in <list> list of proxies which are also stick-tables,
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* 0 if not.
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*/
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static inline int in_proxies_list(struct proxy *list, struct proxy *proxy)
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{
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struct proxy *p;
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for (p = list; p; p = p->next_stkt_ref)
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if (proxy == p)
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return 1;
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return 0;
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}
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#endif /* _HAPROXY_PROXY_H */
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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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