Mercurial > hg > nginx
annotate src/os/unix/ngx_time.c @ 9299:2706b60dc225 default tip
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 | d620f497c50f |
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rev | line source |
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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 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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2220 | 12 /* |
13 * FreeBSD does not test /etc/localtime change, however, we can workaround it | |
14 * by calling tzset() with TZ and then without TZ to update timezone. | |
15 * The trick should work since FreeBSD 2.1.0. | |
16 * | |
17 * Linux does not test /etc/localtime change in localtime(), | |
18 * but may stat("/etc/localtime") several times in every strftime(), | |
19 * therefore we use it to update timezone. | |
20 * | |
21 * Solaris does not test /etc/TIMEZONE change too and no workaround available. | |
22 */ | |
23 | |
24 void | |
25 ngx_timezone_update(void) | |
26 { | |
27 #if (NGX_FREEBSD) | |
28 | |
29 if (getenv("TZ")) { | |
30 return; | |
31 } | |
32 | |
33 putenv("TZ=UTC"); | |
34 | |
35 tzset(); | |
36 | |
37 unsetenv("TZ"); | |
38 | |
39 tzset(); | |
40 | |
41 #elif (NGX_LINUX) | |
42 time_t s; | |
43 struct tm *t; | |
44 char buf[4]; | |
45 | |
46 s = time(0); | |
47 | |
48 t = localtime(&s); | |
49 | |
50 strftime(buf, 4, "%H", t); | |
51 | |
52 #endif | |
53 } | |
54 | |
55 | |
563 | 56 void |
57 ngx_localtime(time_t s, ngx_tm_t *tm) | |
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58 { |
469 | 59 #if (NGX_HAVE_LOCALTIME_R) |
563 | 60 (void) localtime_r(&s, tm); |
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62 #else |
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63 ngx_tm_t *t; |
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563 | 65 t = localtime(&s); |
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66 *tm = *t; |
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68 #endif |
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70 tm->ngx_tm_mon++; |
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71 tm->ngx_tm_year += 1900; |
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72 } |
509 | 73 |
74 | |
563 | 75 void |
76 ngx_libc_localtime(time_t s, struct tm *tm) | |
509 | 77 { |
78 #if (NGX_HAVE_LOCALTIME_R) | |
563 | 79 (void) localtime_r(&s, tm); |
509 | 80 |
81 #else | |
82 struct tm *t; | |
83 | |
563 | 84 t = localtime(&s); |
509 | 85 *tm = *t; |
86 | |
87 #endif | |
88 } | |
89 | |
90 | |
563 | 91 void |
92 ngx_libc_gmtime(time_t s, struct tm *tm) | |
509 | 93 { |
94 #if (NGX_HAVE_LOCALTIME_R) | |
563 | 95 (void) gmtime_r(&s, tm); |
509 | 96 |
97 #else | |
98 struct tm *t; | |
99 | |
563 | 100 t = gmtime(&s); |
509 | 101 *tm = *t; |
102 | |
103 #endif | |
104 } |