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9ba2dcc86c
This patch adds the ability to set a pointer in the session to an entry in a stick table which holds various counters related to a specific pattern. Right now the syntax matches the target syntax and only the "src" pattern can be specified, to track counters related to the session's IPv4 source address. There is a special function to extract it and convert it to a key. But the goal is to be able to later support as many patterns as for the stick rules, and get rid of the specific function. The "track-counters" directive may only be set in a "tcp-request" statement right now. Only the first one applies. Probably that later we'll support multi-criteria tracking for a single session and that we'll have to name tracking pointers. No counter is updated right now, only the refcount is. Some subsequent patches will have to bring that feature.
84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/*
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* include/proto/session.h
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* This file defines everything related to sessions.
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*
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* Copyright (C) 2000-2010 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_SESSION_H
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#define _PROTO_SESSION_H
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#include <common/config.h>
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#include <common/memory.h>
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#include <types/session.h>
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#include <proto/stick_table.h>
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extern struct pool_head *pool2_session;
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extern struct list sessions;
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int session_accept(struct listener *l, int cfd, struct sockaddr_storage *addr);
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void session_free(struct session *s);
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/* perform minimal intializations, report 0 in case of error, 1 if OK. */
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int init_session();
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void session_process_counters(struct session *s);
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void sess_change_server(struct session *sess, struct server *newsrv);
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struct task *process_session(struct task *t);
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void sess_set_term_flags(struct session *s);
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void default_srv_error(struct session *s, struct stream_interface *si);
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int parse_track_counters(char **args, int *arg,
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int section_type, struct proxy *curpx,
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struct track_ctr_prm *prm,
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struct proxy *defpx, char *err, int errlen);
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/* Remove the refcount from the session to the tracked counters, and clear the
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* pointer to ensure this is only performed once. The caller is responsible for
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* ensuring that the pointer is valid first.
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*/
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static inline void session_store_counters(struct session *s)
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{
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s->tracked_counters->ref_cnt--;
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s->tracked_counters = NULL;
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}
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/* Enable tracking of session counters on stksess <ts>. The caller is
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* responsible for ensuring that <t> and <ts> are valid pointers and that no
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* previous tracked_counters was assigned to the session.
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*/
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static inline void session_track_counters(struct session *s, struct stktable *t, struct stksess *ts)
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{
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ts->ref_cnt++;
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s->tracked_table = t;
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s->tracked_counters = ts;
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}
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static void inline trace_term(struct session *s, unsigned int code)
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{
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s->term_trace <<= TT_BIT_SHIFT;
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s->term_trace |= code;
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}
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#endif /* _PROTO_SESSION_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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