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/*
* include/haproxy/sink-t.h
* This file provides definitions for event sinks
*
* Copyright (C) 2000-2019 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 _HAPROXY_SINK_T_H
#define _HAPROXY_SINK_T_H
#include <import/ist.h>
#include <haproxy/api-t.h>
#include <haproxy/log-t.h>
/* A sink may be of 4 distinct types :
* - file descriptor (such as stdout)
* - ring buffer, readable from CLI
*/
enum sink_type {
SINK_TYPE_NEW, // not yet initialized
SINK_TYPE_FD, // events sent to a file descriptor
SINK_TYPE_BUFFER, // events sent to a ring buffer
};
struct sink_forward_target {
struct server *srv; // used server
struct appctx *appctx; // appctx of current session
size_t ofs; // ring buffer reader offset
struct sink *sink; // the associated sink
struct sink_forward_target *next;
__decl_thread(HA_SPINLOCK_T lock); // lock to protect current struct
};
/* describes the configuration and current state of an event sink */
struct sink {
struct list sink_list; // position in the sink list
char *name; // sink name
char *desc; // sink description
char *store; // backing-store file when buffer
enum log_fmt fmt; // format expected by the sink
enum sink_type type; // type of storage
uint32_t maxlen; // max message length (truncated above)
struct proxy* forward_px; // internal proxy used to forward (only set when exclusive to sink)
struct sink_forward_target *sft; // sink forward targets
struct task *forward_task; // task to handle forward targets conns
struct sig_handler *forward_sighandler; /* signal handler */
struct {
struct ring *ring; // used by ring buffer and STRM sender
unsigned int dropped; // dropped events since last one.
int fd; // fd num for FD type sink
__decl_thread(HA_RWLOCK_T lock); // shared/excl for dropped
} ctx;
};
#endif /* _HAPROXY_SINK_T_H */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/
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