Mercurial > hg > nginx-ranges
view src/core/ngx_log.c @ 391:1d9bef53cd8e
Range filter: late_ranges functionality.
Add one more filtering point after postpone filter. This allows to serve
range capable replies with subrequests. It's not as efficient as range
filtering for static data (i.e. doesn't save us from reading data from
disk if some filter needs them in memory), but it may save some network
bandwidth for us and for our users.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 21 Jul 2008 05:33:01 +0400 |
parents | f7cd062ee035 |
children | ff86d646f9df |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> static char *ngx_set_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_command_t ngx_errlog_commands[] = { {ngx_string("error_log"), NGX_MAIN_CONF|NGX_CONF_1MORE, ngx_set_error_log, 0, 0, NULL}, ngx_null_command }; static ngx_core_module_t ngx_errlog_module_ctx = { ngx_string("errlog"), NULL, NULL }; ngx_module_t ngx_errlog_module = { NGX_MODULE_V1, &ngx_errlog_module_ctx, /* module context */ ngx_errlog_commands, /* module directives */ NGX_CORE_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static ngx_log_t ngx_log; static ngx_open_file_t ngx_stderr; static const char *err_levels[] = { "stderr", "emerg", "alert", "crit", "error", "warn", "notice", "info", "debug" }; static const char *debug_levels[] = { "debug_core", "debug_alloc", "debug_mutex", "debug_event", "debug_http", "debug_mail", "debug_mysql" }; #if (NGX_HAVE_VARIADIC_MACROS) void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, const char *fmt, ...) #else void ngx_log_error_core(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, const char *fmt, va_list args) #endif { #if (NGX_HAVE_VARIADIC_MACROS) va_list args; #endif u_char errstr[NGX_MAX_ERROR_STR], *p, *last; if (log->file->fd == NGX_INVALID_FILE) { return; } last = errstr + NGX_MAX_ERROR_STR; ngx_memcpy(errstr, ngx_cached_err_log_time.data, ngx_cached_err_log_time.len); p = errstr + ngx_cached_err_log_time.len; p = ngx_snprintf(p, last - p, " [%s] ", err_levels[level]); /* pid#tid */ p = ngx_snprintf(p, last - p, "%P#" NGX_TID_T_FMT ": ", ngx_log_pid, ngx_log_tid); if (log->connection) { p = ngx_snprintf(p, last - p, "*%uA ", log->connection); } #if (NGX_HAVE_VARIADIC_MACROS) va_start(args, fmt); p = ngx_vsnprintf(p, last - p, fmt, args); va_end(args); #else p = ngx_vsnprintf(p, last - p, fmt, args); #endif if (err) { if (p > last - 50) { /* leave a space for an error code */ p = last - 50; *p++ = '.'; *p++ = '.'; *p++ = '.'; } #if (NGX_WIN32) if ((unsigned) err >= 0x80000000) { p = ngx_snprintf(p, last - p, " (%Xd: ", err); } else { p = ngx_snprintf(p, last - p, " (%d: ", err); } #else p = ngx_snprintf(p, last - p, " (%d: ", err); #endif p = ngx_strerror_r(err, p, last - p); if (p < last) { *p++ = ')'; } } if (level != NGX_LOG_DEBUG && log->handler) { p = log->handler(log, p, last - p); } if (p > last - NGX_LINEFEED_SIZE) { p = last - NGX_LINEFEED_SIZE; } ngx_linefeed(p); ngx_write_fd(log->file->fd, errstr, p - errstr); } #if !(NGX_HAVE_VARIADIC_MACROS) void ngx_cdecl ngx_log_error(ngx_uint_t level, ngx_log_t *log, ngx_err_t err, const char *fmt, ...) { va_list args; if (log->log_level >= level) { va_start(args, fmt); ngx_log_error_core(level, log, err, fmt, args); va_end(args); } } void ngx_cdecl ngx_log_debug_core(ngx_log_t *log, ngx_err_t err, const char *fmt, ...) { va_list args; va_start(args, fmt); ngx_log_error_core(NGX_LOG_DEBUG, log, err, fmt, args); va_end(args); } #endif void ngx_log_abort(ngx_err_t err, const char *text) { ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, err, text); } ngx_log_t * ngx_log_init(void) { ngx_log.file = &ngx_stderr; ngx_log.log_level = NGX_LOG_NOTICE; #if (NGX_WIN32) ngx_stderr_fileno = GetStdHandle(STD_ERROR_HANDLE); ngx_stderr.fd = ngx_open_file(NGX_ERROR_LOG_PATH, NGX_FILE_RDWR, NGX_FILE_CREATE_OR_OPEN|NGX_FILE_APPEND, 0); if (ngx_stderr.fd == NGX_INVALID_FILE) { ngx_message_box("nginx", MB_OK, ngx_errno, "Could not open error log file: " ngx_open_file_n " \"" NGX_ERROR_LOG_PATH "\" failed"); return NULL; } if (ngx_file_append_mode(ngx_stderr.fd) == NGX_ERROR) { ngx_message_box("nginx", MB_OK, ngx_errno, "Could not open error log file: " ngx_file_append_mode_n " \"" NGX_ERROR_LOG_PATH "\" failed"); return NULL; } #else ngx_stderr.fd = STDERR_FILENO; #endif return &ngx_log; } ngx_log_t * ngx_log_create_errlog(ngx_cycle_t *cycle, ngx_array_t *args) { ngx_log_t *log; ngx_str_t *value, *name; if (args) { value = args->elts; name = &value[1]; } else { name = NULL; } log = ngx_pcalloc(cycle->pool, sizeof(ngx_log_t)); if (log == NULL) { return NULL; } log->file = ngx_conf_open_file(cycle, name); if (log->file == NULL) { return NULL; } return log; } char * ngx_set_error_log_levels(ngx_conf_t *cf, ngx_log_t *log) { ngx_uint_t i, n, d; ngx_str_t *value; value = cf->args->elts; for (i = 2; i < cf->args->nelts; i++) { for (n = 1; n <= NGX_LOG_DEBUG; n++) { if (ngx_strcmp(value[i].data, err_levels[n]) == 0) { if (log->log_level != 0) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "duplicate log level \"%s\"", value[i].data); return NGX_CONF_ERROR; } log->log_level = n; continue; } } for (n = 0, d = NGX_LOG_DEBUG_FIRST; d <= NGX_LOG_DEBUG_LAST; d <<= 1) { if (ngx_strcmp(value[i].data, debug_levels[n++]) == 0) { if (log->log_level & ~NGX_LOG_DEBUG_ALL) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid log level \"%s\"", value[i].data); return NGX_CONF_ERROR; } log->log_level |= d; } } if (log->log_level == 0) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid log level \"%s\"", value[i].data); return NGX_CONF_ERROR; } } if (log->log_level == NGX_LOG_DEBUG) { log->log_level = NGX_LOG_DEBUG_ALL; } return NGX_CONF_OK; } static char * ngx_set_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_str_t *value; value = cf->args->elts; if (value[1].len == 6 && ngx_strcmp(value[1].data, "stderr") == 0) { cf->cycle->new_log->file->fd = ngx_stderr.fd; cf->cycle->new_log->file->name.len = 0; cf->cycle->new_log->file->name.data = NULL; } else { cf->cycle->new_log->file->name = value[1]; if (ngx_conf_full_name(cf->cycle, &cf->cycle->new_log->file->name, 0) == NGX_ERROR) { return NGX_CONF_ERROR; } } return ngx_set_error_log_levels(cf, cf->cycle->new_log); }