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annotate src/http/v3/ngx_http_v3_table.h @ 9299:2706b60dc225 default tip

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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>
date Tue, 25 Jun 2024 22:58:56 +0300
parents 81a3429db8b0
children
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1
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2 /*
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3 * Copyright (C) Roman Arutyunyan
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #ifndef _NGX_HTTP_V3_TABLE_H_INCLUDED_
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9 #define _NGX_HTTP_V3_TABLE_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 #include <ngx_http.h>
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17 typedef struct {
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18 ngx_str_t name;
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19 ngx_str_t value;
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20 } ngx_http_v3_field_t;
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23 typedef struct {
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24 ngx_http_v3_field_t **elts;
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25 ngx_uint_t nelts;
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26 ngx_uint_t base;
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27 size_t size;
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28 size_t capacity;
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29 uint64_t insert_count;
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30 uint64_t ack_insert_count;
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31 ngx_event_t send_insert_count;
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32 } ngx_http_v3_dynamic_table_t;
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35 void ngx_http_v3_inc_insert_count_handler(ngx_event_t *ev);
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36 void ngx_http_v3_cleanup_table(ngx_http_v3_session_t *h3c);
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37 ngx_int_t ngx_http_v3_ref_insert(ngx_connection_t *c, ngx_uint_t dynamic,
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38 ngx_uint_t index, ngx_str_t *value);
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39 ngx_int_t ngx_http_v3_insert(ngx_connection_t *c, ngx_str_t *name,
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40 ngx_str_t *value);
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41 ngx_int_t ngx_http_v3_set_capacity(ngx_connection_t *c, ngx_uint_t capacity);
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42 ngx_int_t ngx_http_v3_duplicate(ngx_connection_t *c, ngx_uint_t index);
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43 ngx_int_t ngx_http_v3_ack_section(ngx_connection_t *c, ngx_uint_t stream_id);
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44 ngx_int_t ngx_http_v3_inc_insert_count(ngx_connection_t *c, ngx_uint_t inc);
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45 ngx_int_t ngx_http_v3_lookup_static(ngx_connection_t *c, ngx_uint_t index,
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46 ngx_str_t *name, ngx_str_t *value);
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47 ngx_int_t ngx_http_v3_lookup(ngx_connection_t *c, ngx_uint_t index,
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48 ngx_str_t *name, ngx_str_t *value);
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49 ngx_int_t ngx_http_v3_decode_insert_count(ngx_connection_t *c,
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50 ngx_uint_t *insert_count);
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51 ngx_int_t ngx_http_v3_check_insert_count(ngx_connection_t *c,
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52 ngx_uint_t insert_count);
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53 void ngx_http_v3_ack_insert_count(ngx_connection_t *c, uint64_t insert_count);
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54 ngx_int_t ngx_http_v3_set_param(ngx_connection_t *c, uint64_t id,
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55 uint64_t value);
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58 #endif /* _NGX_HTTP_V3_TABLE_H_INCLUDED_ */