Mercurial > hg > nginx
annotate src/core/ngx_regex.h @ 9299:2706b60dc225
Core: error logging rate limiting.
With this change, error logging to files can be rate-limited with
the "rate=" parameter. The parameter specifies allowed log messages
rate to a particular file (per worker), in messages per second (m/s).
By default, "rate=1000m/s" is used.
Rate limiting is implemented using the "leaky bucket" method, similarly
to the limit_req module.
Maximum burst size is set to the number of log messages per second
for each severity level, so "error" messages are logged even if the
rate limit is hit by "info" messages (but not vice versa). When the
limit is reached for a particular level, the "too many log messages,
limiting" message is logged at this level.
If debug logging is enabled, either for the particular log file or for
the particular connection, rate limiting is not used.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Tue, 25 Jun 2024 22:58:56 +0300 |
parents | d07456044b61 |
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rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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8 #ifndef _NGX_REGEX_H_INCLUDED_ |
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9 #define _NGX_REGEX_H_INCLUDED_ |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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14 |
7981 | 15 |
16 #if (NGX_PCRE2) | |
17 | |
18 #define PCRE2_CODE_UNIT_WIDTH 8 | |
19 #include <pcre2.h> | |
20 | |
21 #define NGX_REGEX_NO_MATCHED PCRE2_ERROR_NOMATCH /* -1 */ | |
22 | |
23 typedef pcre2_code ngx_regex_t; | |
24 | |
25 #else | |
26 | |
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27 #include <pcre.h> |
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28 |
7981 | 29 #define NGX_REGEX_NO_MATCHED PCRE_ERROR_NOMATCH /* -1 */ |
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30 |
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31 typedef struct { |
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32 pcre *code; |
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33 pcre_extra *extra; |
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34 } ngx_regex_t; |
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35 |
7981 | 36 #endif |
37 | |
3325 | 38 |
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39 #define NGX_REGEX_CASELESS 0x00000001 |
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40 #define NGX_REGEX_MULTILINE 0x00000002 |
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41 |
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42 |
1784 | 43 typedef struct { |
3325 | 44 ngx_str_t pattern; |
45 ngx_pool_t *pool; | |
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46 ngx_uint_t options; |
3325 | 47 |
48 ngx_regex_t *regex; | |
49 int captures; | |
50 int named_captures; | |
51 int name_size; | |
52 u_char *names; | |
53 ngx_str_t err; | |
54 } ngx_regex_compile_t; | |
55 | |
56 | |
57 typedef struct { | |
58 ngx_regex_t *regex; | |
59 u_char *name; | |
1784 | 60 } ngx_regex_elt_t; |
61 | |
62 | |
499 | 63 void ngx_regex_init(void); |
3325 | 64 ngx_int_t ngx_regex_compile(ngx_regex_compile_t *rc); |
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65 |
7981 | 66 ngx_int_t ngx_regex_exec(ngx_regex_t *re, ngx_str_t *s, int *captures, |
67 ngx_uint_t size); | |
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68 |
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69 #if (NGX_PCRE2) |
7981 | 70 #define ngx_regex_exec_n "pcre2_match()" |
71 #else | |
72 #define ngx_regex_exec_n "pcre_exec()" | |
73 #endif | |
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74 |
1784 | 75 ngx_int_t ngx_regex_exec_array(ngx_array_t *a, ngx_str_t *s, ngx_log_t *log); |
76 | |
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78 #endif /* _NGX_REGEX_H_INCLUDED_ */ |