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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 975d7ab37b39
children
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_HTTP_PERL_MODULE_H_INCLUDED_
#define _NGX_HTTP_PERL_MODULE_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#include <nginx.h>

#include <EXTERN.h>
#include <perl.h>


typedef ngx_http_request_t   *nginx;

typedef struct {
    ngx_http_request_t       *request;

    ngx_str_t                 filename;
    ngx_str_t                 redirect_uri;

    SV                       *next;

    ngx_int_t                 status;

    unsigned                  done:1;
    unsigned                  error:1;
    unsigned                  variable:1;
    unsigned                  header_sent:1;

    ngx_array_t              *variables;  /* array of ngx_http_perl_var_t */

#if (NGX_HTTP_SSI)
    ngx_http_ssi_ctx_t       *ssi;
#endif
} ngx_http_perl_ctx_t;


typedef struct {
    ngx_uint_t    hash;
    ngx_str_t     name;
    ngx_str_t     value;
} ngx_http_perl_var_t;


extern ngx_module_t  ngx_http_perl_module;


/*
 * workaround for "unused variable `Perl___notused'" warning
 * when building with perl 5.6.1
 */
#ifndef PERL_IMPLICIT_CONTEXT
#undef  dTHXa
#define dTHXa(a)
#endif


extern void boot_DynaLoader(pTHX_ CV* cv);


void ngx_http_perl_handle_request(ngx_http_request_t *r);
void ngx_http_perl_sleep_handler(ngx_http_request_t *r);


#endif /* _NGX_HTTP_PERL_MODULE_H_INCLUDED_ */