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#ifndef _NGX_LOG_H_INCLUDED_
#define _NGX_LOG_H_INCLUDED_
#include <ngx_config.h>
#include <ngx_core.h>
typedef enum {
NGX_LOG_STDERR = 0,
NGX_LOG_EMERG,
NGX_LOG_ALERT,
NGX_LOG_CRIT,
NGX_LOG_ERR,
NGX_LOG_WARN,
NGX_LOG_NOTICE,
NGX_LOG_INFO,
NGX_LOG_DEBUG
} ngx_log_e;
/*
"[%time] [%level] %pid#%tid: %message:(%errno)%errstr, while %action"
" %peer and while processing %context"
----
message = "recv() failed";
errno = 32;
action = "reading request headers from client";
peer = "192.168.1.1";
context = "URL /"
"[2002/08/20 12:00:00] [error] 412#3: recv() failed (32: Broken pipe)"
" while reading request headers from client 192.168.1.1"
" and while processing URL /"
----
message = "recv() failed";
errno = 32;
ngx_http_proxy_error_context_t:
action = "reading headers from server %s for client %s and "
"while processing %s"
backend = "127.0.0.1";
peer = "192.168.1.1";
context = "URL /"
"[2002/08/20 12:00:00] [error] 412#3: recv() failed (32: Broken pipe)"
" while reading headers from backend 127.0.0.1"
" for client 192.168.1.1 and while processing URL /"
----
"[alert] 412#3: ngx_alloc: malloc() 102400 bytes failed (12: Cannot "
"allocate memory) while reading request headers from client 192.168.1.1"
" and while processing URL /"
OLD:
"... while ", action = "reading client request headers"
"... while reading client request headers"
"... while ", action = "reading client request headers"
context: pop3 user account
"... while reading client command for 'john_doe'"
*/
typedef struct {
int log_level;
ngx_open_file_t *file;
void *data;
size_t (*handler)(void *ctx, char *buf, size_t len);
#if 0
/* STUB */
char *action;
char *context;
/* */
#endif
} ngx_log_t;
#define MAX_ERROR_STR 2048
#define _ ,
#if (HAVE_GCC_VARIADIC_MACROS)
#define HAVE_VARIADIC_MACROS 1
#define ngx_log_error(level, log, args...) \
if (log->log_level >= level) ngx_log_error_core(level, log, args)
#if (NGX_DEBUG)
#define ngx_log_debug(log, args...) \
if (log->log_level == NGX_LOG_DEBUG) \
ngx_log_error_core(NGX_LOG_DEBUG, log, 0, args)
#else
#define ngx_log_debug(log, args...)
#endif
#define ngx_assert(assert, fallback, log, args...) \
if (!(assert)) { \
if (log->log_level >= NGX_LOG_ALERT) \
ngx_log_error_core(NGX_LOG_ALERT, log, 0, args); \
fallback; \
}
void ngx_log_error_core(int level, ngx_log_t *log, ngx_err_t err,
const char *fmt, ...);
#elif (HAVE_C99_VARIADIC_MACROS)
#define HAVE_VARIADIC_MACROS 1
#define ngx_log_error(level, log, ...) \
if (log->log_level >= level) ngx_log_error_core(level, log, __VA_ARGS__)
#if (NGX_DEBUG)
#define ngx_log_debug(log, ...) \
if (log->log_level == NGX_LOG_DEBUG) \
ngx_log_error_core(NGX_LOG_DEBUG, log, 0, __VA_ARGS__)
#else
#define ngx_log_debug(log, ...)
#endif
#define ngx_assert(assert, fallback, log, ...) \
if (!(assert)) { \
if (log->log_level >= NGX_LOG_ALERT) \
ngx_log_error_core(NGX_LOG_ALERT, log, 0, __VA_ARGS__); \
fallback; \
}
void ngx_log_error_core(int level, ngx_log_t *log, ngx_err_t err,
const char *fmt, ...);
#else /* NO VARIADIC MACROS */
#include <stdarg.h>
#if (NGX_DEBUG)
#define ngx_log_debug(log, text) \
if (log->log_level == NGX_LOG_DEBUG) \
ngx_log_debug_core(log, text)
#else
#define ngx_log_debug(log, text)
#endif
#define ngx_assert(assert, fallback, log, text) \
if (!(assert)) { \
if (log->log_level >= NGX_LOG_ALERT) \
ngx_assert_core(log, text); \
fallback; \
}
void ngx_log_error(int level, ngx_log_t *log, ngx_err_t err,
const char *fmt, ...);
void ngx_log_error_core(int level, ngx_log_t *log, ngx_err_t err,
const char *fmt, va_list args);
void ngx_log_debug_core(ngx_log_t *log, const char *fmt, ...);
void ngx_assert_core(ngx_log_t *log, const char *fmt, ...);
#endif /* VARIADIC MACROS */
#define ngx_log_alloc_log(pool, log) ngx_palloc(pool, log, sizeof(ngx_log_t))
#define ngx_log_copy_log(new, old) ngx_memcpy(new, old, sizeof(ngx_log_t))
ngx_log_t *ngx_log_init_errlog();
char *ngx_log_set_errlog(ngx_conf_t *cf, ngx_command_t *cmd, ngx_log_t *log);
extern ngx_module_t ngx_errlog_module;
#endif /* _NGX_LOG_H_INCLUDED_ */
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