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1777ea63e0
Since commit 6879ad3 ("MEDIUM: sample: fill the struct sample with the
session, proxy and stream pointers") merged in 1.6-dev2, the sample
contains the pointer to the stream and sample fetch functions as well
as converters use it heavily. This requires from a lot of call places
to initialize 4 fields, and it was even forgotten at a few places.
This patch provides a convenient helper to initialize all these fields
at once, making it easy to prepare a new sample from a previous one for
example.
A few call places were cleaned up to make use of it. It will be needed
by further fixes.
At one place in the Lua code, it was moved earlier because we used to
call sample casts with a non completely initialized sample, which is
not clean eventhough at the moment there are no consequences.
78 lines
2.9 KiB
C
78 lines
2.9 KiB
C
/*
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* include/proto/sample.h
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* Functions for samples management.
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*
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* Copyright (C) 2009-2010 EXCELIANCE, Emeric Brun <ebrun@exceliance.fr>
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* Copyright (C) 2012 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_SAMPLE_H
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#define _PROTO_SAMPLE_H
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#include <types/sample.h>
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#include <types/stick_table.h>
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extern const char *smp_to_type[SMP_TYPES];
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struct sample_expr *sample_parse_expr(char **str, int *idx, const char *file, int line, char **err, struct arg_list *al);
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struct sample_conv *find_sample_conv(const char *kw, int len);
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struct sample *sample_process(struct proxy *px, struct session *sess,
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struct stream *strm, unsigned int opt,
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struct sample_expr *expr, struct sample *p);
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struct sample *sample_fetch_as_type(struct proxy *px, struct session *sess,
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struct stream *strm, unsigned int opt,
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struct sample_expr *expr, int smp_type);
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void sample_register_fetches(struct sample_fetch_kw_list *psl);
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void sample_register_convs(struct sample_conv_kw_list *psl);
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const char *sample_src_names(unsigned int use);
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const char *sample_ckp_names(unsigned int use);
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struct sample_fetch *find_sample_fetch(const char *kw, int len);
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struct sample_fetch *sample_fetch_getnext(struct sample_fetch *current, int *idx);
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struct sample_conv *sample_conv_getnext(struct sample_conv *current, int *idx);
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int smp_resolve_args(struct proxy *p);
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int smp_expr_output_type(struct sample_expr *expr);
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int c_none(struct sample *smp);
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int smp_dup(struct sample *smp);
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/*
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* This function just apply a cast on sample. It returns 0 if the cast is not
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* avalaible or if the cast fails, otherwise returns 1. It does not modify the
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* input sample on failure.
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*/
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static inline
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int sample_convert(struct sample *sample, int req_type)
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{
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if (!sample_casts[sample->data.type][req_type])
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return 0;
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if (sample_casts[sample->data.type][req_type] == c_none)
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return 1;
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return sample_casts[sample->data.type][req_type](sample);
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}
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static inline
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struct sample *smp_set_owner(struct sample *smp, struct proxy *px,
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struct session *sess, struct stream *strm, int opt)
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{
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smp->px = px;
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smp->sess = sess;
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smp->strm = strm;
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smp->opt = opt;
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return smp;
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}
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#endif /* _PROTO_SAMPLE_H */
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