mirror of
https://git.haproxy.org/git/haproxy.git/
synced 2025-08-10 00:57:02 +02:00
87b09668be
With HTTP/2, we'll have to support multiplexed streams. A stream is in
fact the largest part of what we currently call a session, it has buffers,
logs, etc.
In order to catch any error, this commit removes any reference to the
struct session and tries to rename most "session" occurrences in function
names to "stream" and "sess" to "strm" when that's related to a session.
The files stream.{c,h} were added and session.{c,h} removed.
The session will be reintroduced later and a few parts of the stream
will progressively be moved overthere. It will more or less contain
only what we need in an embryonic session.
Sample fetch functions and converters will have to change a bit so
that they'll use an L5 (session) instead of what's currently called
"L4" which is in fact L6 for now.
Once all changes are completed, we should see approximately this :
L7 - http_txn
L6 - stream
L5 - session
L4 - connection | applet
There will be at most one http_txn per stream, and a same session will
possibly be referenced by multiple streams. A connection will point to
a session and to a stream. The session will hold all the information
we need to keep even when we don't yet have a stream.
Some more cleanup is needed because some code was already far from
being clean. The server queue management still refers to sessions at
many places while comments talk about connections. This will have to
be cleaned up once we have a server-side connection pool manager.
Stream flags "SN_*" still need to be renamed, it doesn't seem like
any of them will need to move to the session.
66 lines
2.6 KiB
C
66 lines
2.6 KiB
C
/*
|
|
* include/proto/sample.h
|
|
* Functions for samples management.
|
|
*
|
|
* Copyright (C) 2009-2010 EXCELIANCE, Emeric Brun <ebrun@exceliance.fr>
|
|
* Copyright (C) 2012 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 _PROTO_SAMPLE_H
|
|
#define _PROTO_SAMPLE_H
|
|
|
|
#include <types/sample.h>
|
|
#include <types/stick_table.h>
|
|
|
|
extern const char *smp_to_type[SMP_TYPES];
|
|
|
|
struct sample_expr *sample_parse_expr(char **str, int *idx, const char *file, int line, char **err, struct arg_list *al);
|
|
struct sample_conv *find_sample_conv(const char *kw, int len);
|
|
struct sample *sample_process(struct proxy *px, struct stream *l4,
|
|
void *l7, unsigned int dir, struct sample_expr *expr,
|
|
struct sample *p);
|
|
struct sample *sample_fetch_string(struct proxy *px, struct stream *l4, void *l7,
|
|
unsigned int opt, struct sample_expr *expr);
|
|
void sample_register_fetches(struct sample_fetch_kw_list *psl);
|
|
void sample_register_convs(struct sample_conv_kw_list *psl);
|
|
const char *sample_src_names(unsigned int use);
|
|
const char *sample_ckp_names(unsigned int use);
|
|
struct sample_fetch *find_sample_fetch(const char *kw, int len);
|
|
struct sample_fetch *sample_fetch_getnext(struct sample_fetch *current, int *idx);
|
|
struct sample_conv *sample_conv_getnext(struct sample_conv *current, int *idx);
|
|
int smp_resolve_args(struct proxy *p);
|
|
int smp_expr_output_type(struct sample_expr *expr);
|
|
int c_none(struct sample *smp);
|
|
int smp_dup(struct sample *smp);
|
|
|
|
/*
|
|
* This function just apply a cast on sample. It returns 0 if the cast is not
|
|
* avalaible or if the cast fails, otherwise returns 1. It does not modify the
|
|
* input sample on failure.
|
|
*/
|
|
static inline
|
|
int sample_convert(struct sample *sample, int req_type)
|
|
{
|
|
if (!sample_casts[sample->type][req_type])
|
|
return 0;
|
|
if (sample_casts[sample->type][req_type] == c_none)
|
|
return 1;
|
|
return sample_casts[sample->type][req_type](sample);
|
|
}
|
|
|
|
#endif /* _PROTO_SAMPLE_H */
|