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ngx_http_request_stats_module.c
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/*************************************************
* Author: [email protected]
* Copyright: jie123108
*************************************************/
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#include <time.h>
#include <string.h>
#ifdef NGX_SHMAP
#include "ngx_shmap.h"
#else
#include "_ngx_shmap.h"
#endif
#include "ngx_http_request_stats_module.h"
#define atom_add(p, n) __sync_add_and_fetch(p, n);
int status_codes[] = {
NGX_HTTP_OK,
NGX_HTTP_PARTIAL_CONTENT,
NGX_HTTP_SPECIAL_RESPONSE,
NGX_HTTP_MOVED_PERMANENTLY,
NGX_HTTP_MOVED_TEMPORARILY,
NGX_HTTP_NOT_MODIFIED,
NGX_HTTP_TEMPORARY_REDIRECT,
NGX_HTTP_BAD_REQUEST,
NGX_HTTP_UNAUTHORIZED,
NGX_HTTP_FORBIDDEN,
NGX_HTTP_NOT_FOUND,
NGX_HTTP_NOT_ALLOWED,
NGX_HTTP_REQUEST_TIME_OUT,
NGX_HTTP_CONFLICT,
NGX_HTTP_CLIENT_CLOSED_REQUEST,
NGX_HTTP_INTERNAL_SERVER_ERROR,
NGX_HTTP_BAD_GATEWAY,
NGX_HTTP_SERVICE_UNAVAILABLE,
NGX_HTTP_GATEWAY_TIME_OUT
};
#define HTTP_CODE_CNT ((int)(sizeof(status_codes)/sizeof(int)))
static char g_code_index[512];
static void code_index_init(){
memset(g_code_index,-1, sizeof(g_code_index));
int i;
for(i=0;i< HTTP_CODE_CNT;i++){
g_code_index[status_codes[i]] = i;
}
}
typedef struct {
uint32_t stats_time; //stat
uint32_t request_count; //请求次数
uint32_t req_count_detail[HTTP_CODE_CNT]; //每种错误码的详细记录
uint64_t request_time;//请求时间累计(毫秒)。
uint64_t recv; //接收的请求总大小(byte)
uint64_t sent; //发送的响应总大小(byte)
}request_stats_value_t;
typedef struct {
uint32_t user_flags;
ngx_str_t name;
}stats_name_t;
typedef struct {
ngx_shm_zone_t* shmap;
size_t shmap_size;
time_t shmap_exptime;
ngx_array_t* stats_names;
} ngx_http_request_stats_main_conf_t;
typedef struct {
ngx_flag_t request_stats_query; //on | off
ngx_array_t *stats; /* array of ngx_http_request_stats_t */
ngx_uint_t off; /* unsigned off:1 */
} ngx_http_request_stats_loc_conf_t;
static ngx_int_t ngx_http_request_stats_shm_get(
ngx_http_request_t *r,ngx_str_t* key,
request_stats_value_t** pvalue);
static ngx_int_t ngx_http_request_stats_init_process(ngx_cycle_t *cycle);
static void ngx_http_request_stats_exit_process(ngx_cycle_t *cycle);
static ngx_int_t ngx_http_request_stats_variable_compile(ngx_conf_t *cf,
ngx_http_request_stats_op_t *op, ngx_str_t *value);
static size_t ngx_http_request_stats_variable_getlen(ngx_http_request_t *r,
uintptr_t data);
static u_char *ngx_http_request_stats_variable(ngx_http_request_t *r, u_char *buf,
ngx_http_request_stats_op_t *op);
static void *ngx_http_request_stats_create_main_conf(ngx_conf_t *cf);
static char* ngx_http_request_stats_init_main_conf(ngx_conf_t *cf, void *conf);
static void *ngx_http_request_stats_create_loc_conf(ngx_conf_t *cf);
static char *ngx_http_request_stats_merge_loc_conf(ngx_conf_t *cf, void *parent,
void *child);
static char *ngx_http_request_stats_set_request_stat(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_http_request_stats_compile_key(ngx_conf_t *cf,
ngx_array_t *flushes, ngx_array_t *ops, ngx_array_t *args, ngx_uint_t s);
static ngx_int_t ngx_http_request_stats_init(ngx_conf_t *cf);
ngx_int_t ngx_http_request_stats_query_handler(ngx_http_request_t *r);
static char* ngx_http_request_stats_query_post_handler (
ngx_conf_t *cf, void *data, void *conf)
{
ngx_http_core_loc_conf_t *clcf;
clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module);
clcf->handler = ngx_http_request_stats_query_handler;
return NGX_CONF_OK;}
static ngx_conf_post_t query_post = {&ngx_http_request_stats_query_post_handler};
static ngx_command_t ngx_http_request_stats_commands[] = {
{ngx_string("request_stats_query"),
NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
ngx_conf_set_flag_slot,
NGX_HTTP_LOC_CONF_OFFSET,
offsetof(ngx_http_request_stats_loc_conf_t, request_stats_query),
&query_post },
{ ngx_string("shmap_size"),
NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
ngx_conf_set_size_slot,
NGX_HTTP_MAIN_CONF_OFFSET,
offsetof(ngx_http_request_stats_main_conf_t, shmap_size),
NULL },
{ ngx_string("shmap_exptime"),
NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
ngx_conf_set_sec_slot,
NGX_HTTP_MAIN_CONF_OFFSET,
offsetof(ngx_http_request_stats_main_conf_t, shmap_exptime),
NULL },
{ ngx_string("request_stats"),
NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF
|NGX_HTTP_LMT_CONF|NGX_CONF_TAKE12,
ngx_http_request_stats_set_request_stat,
NGX_HTTP_LOC_CONF_OFFSET,
0,
NULL },
ngx_null_command
};
static ngx_http_module_t ngx_http_request_stats_module_ctx = {
NULL, /* preconfiguration */
ngx_http_request_stats_init, /* postconfiguration */
ngx_http_request_stats_create_main_conf, /* create main configuration */
ngx_http_request_stats_init_main_conf, /* init main configuration */
NULL, /* create server configuration */
NULL, /* merge server configuration */
ngx_http_request_stats_create_loc_conf, /* create location configuration */
ngx_http_request_stats_merge_loc_conf /* merge location configuration */
};
ngx_module_t ngx_http_request_stats_module = {
NGX_MODULE_V1,
&ngx_http_request_stats_module_ctx, /* module context */
ngx_http_request_stats_commands, /* module directives */
NGX_HTTP_MODULE, /* module type */
NULL, /* init master */
NULL, /* init module */
&ngx_http_request_stats_init_process, /* init process */
NULL, /* init thread */
NULL, /* exit thread */
&ngx_http_request_stats_exit_process, /* exit process */
NULL, /* exit master */
NGX_MODULE_V1_PADDING
};
ngx_http_request_stats_var_t ngx_http_request_stats_vars[] = {
{ ngx_string("uri_full"), 0, ngx_http_request_stats_uri_full,ngx_http_request_stats_uri_full_getlen },
//{ ngx_string("json_stat"), 0, ngx_http_request_stats_json_stat,ngx_http_request_stats_json_stats_getlen},
//{ ngx_string("json_reason"), 0, ngx_http_request_stats_json_reason,ngx_http_request_stats_json_reason_getlen},
{ ngx_string("msec"), NGX_TIME_T_LEN + 4, ngx_http_request_stats_msec,NULL },
{ ngx_string("request_time"), NGX_TIME_T_LEN + 4,ngx_http_request_stats_request_time,NULL },
{ ngx_string("status"), 3, ngx_http_request_stats_status,NULL },
{ ngx_string("date"), 10, ngx_http_request_stats_date,NULL }, //yyyy-MM-dd
{ ngx_string("time"), 8, ngx_http_request_stats_time,NULL }, //hh:mm:ss
{ ngx_string("year"), 4, ngx_http_request_stats_year,NULL }, //yyyy
{ ngx_string("month"), 2, ngx_http_request_stats_month,NULL }, //MM
{ ngx_string("day"), 2, ngx_http_request_stats_day,NULL }, //dd
{ ngx_string("hour"), 2, ngx_http_request_stats_hour,NULL }, //hh
{ ngx_string("minute"), 2, ngx_http_request_stats_minute,NULL }, //mm
{ ngx_string("second"), 2, ngx_http_request_stats_second,NULL }, //ss
{ ngx_string("bytes_sent"), NGX_OFF_T_LEN, ngx_http_request_stats_bytes_sent,NULL },
{ ngx_string("body_bytes_sent"), NGX_OFF_T_LEN,
ngx_http_request_stats_body_bytes_sent,NULL },
{ ngx_string("request_length"), NGX_SIZE_T_LEN,
ngx_http_request_stats_request_length,NULL },
{ ngx_null_string, 0, NULL,NULL }
};
static ngx_int_t ngx_http_request_stats_init_process(ngx_cycle_t *cycle)
{
ngx_http_request_stats_main_conf_t *lmcf;
lmcf = (ngx_http_request_stats_main_conf_t*)ngx_get_conf(cycle->conf_ctx, ngx_http_request_stats_module);
if(lmcf == NULL){
return 0;
}
return NGX_OK;
}
static void ngx_http_request_stats_exit_process(ngx_cycle_t *cycle)
{
ngx_http_request_stats_main_conf_t *lmcf;
lmcf = (ngx_http_request_stats_main_conf_t*)ngx_get_conf(cycle->conf_ctx, ngx_http_request_stats_module);
if(lmcf == NULL){
return;
}
}
static ngx_int_t ngx_http_request_stats_shm_get(
ngx_http_request_t *r,ngx_str_t* key,
request_stats_value_t** pvalue)
{
ngx_int_t rc = NGX_OK;
ngx_http_request_stats_main_conf_t* lmcf;
lmcf = ngx_http_get_module_main_conf(r, ngx_http_request_stats_module);
ngx_str_t data = ngx_null_string;
uint8_t value_type = VT_NULL;
ngx_memzero(&data,sizeof(ngx_str_t));
value_type = 0;
rc = ngx_shmap_get(lmcf->shmap, key, &data, &value_type, NULL,NULL);
if(rc == 0){
if(value_type != VT_BINARY){
ngx_log_error(NGX_LOG_ERR, r->connection->log,0,
"ngx_shmap_get failed! key [%V] value_type [%d] invalid!",
key, value_type);
ngx_shmap_delete(lmcf->shmap, key);
return -1;
}
//大小不对。
if(data.len != sizeof(request_stats_value_t)){
ngx_shmap_delete(lmcf->shmap, key);
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"ngx_shmap_get failed! key [%V] value_len [%d] invalid! valid size:%d",
key, (int)data.len, (int)sizeof(request_stats_value_t));
return -1;
}
*pvalue = (request_stats_value_t*)data.data;
rc = NGX_OK;
}
return rc;
}
static ngx_int_t ngx_http_request_stats_shm_get_ex(
ngx_http_request_t *r,
ngx_str_t* key, uint32_t user_flag,
request_stats_value_t** pvalue)
{
ngx_int_t rc = NGX_OK;
ngx_http_request_stats_main_conf_t* lmcf;
lmcf = ngx_http_get_module_main_conf(r, ngx_http_request_stats_module);
ngx_str_t data = ngx_null_string;
uint8_t value_type = VT_NULL;
int add_times = 0;
SHM_GET:
ngx_memzero(&data,sizeof(ngx_str_t));
rc = ngx_http_request_stats_shm_get(r, key, pvalue);
if(rc != NGX_OK)
{
if(add_times++ < 1){//只插入一次。
//不存在，插入新的
request_stats_value_t tmp_value;
memset(&tmp_value,0,sizeof(tmp_value));
tmp_value.stats_time = (uint32_t)ngx_time();
data.len = sizeof(request_stats_value_t);
data.data = (u_char*)&tmp_value;
value_type = VT_BINARY;
rc =ngx_shmap_set(lmcf->shmap, key, &data, value_type, lmcf->shmap_exptime,user_flag);
if(rc != NGX_OK){
ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
"ngx_shmap_set(key=%V) failed! rc=%d",
key, rc);
}
goto SHM_GET;
}else{
rc = NGX_ERROR;
}
}
return rc;
}
char *time2str(const time_t *t, char *sout, size_t buf_len) {
struct tm result;
memset(&result,0,sizeof(result));
localtime_r(t, &result);
strftime(sout, buf_len, "%F %T", &result);
return sout;
}
/**
* 当buf 剩余空间小于1K时，重新分配空间，使其大小为原来一倍
*/
ngx_int_t request_stats_check_buf_size(ngx_http_request_t* r, ngx_buf_t* buf)
{
size_t old_size = buf->end - buf->start;
size_t rest_size = buf->end - buf->last;
if(rest_size < 1024){
u_char* b = (u_char*)ngx_pcalloc(r->connection->pool, old_size*2);
if(b == NULL){
return NGX_ERROR;
}
size_t old_buf_size = ngx_buf_size(buf);
ngx_memcpy(b, buf->pos, old_buf_size);
buf->start = b;
buf->end = buf->start+old_size*2;
buf->pos = b;
buf->last = b+old_buf_size;
}
return NGX_OK;
}
typedef struct {
const char* all_begin;
const char* comment_begin;
const char* comment_clean;
const char* comment_fmt;
const char* comment_stats_name;
const char* comment_end;
const char* mark_begin; //所有记录开始
const char* title_line;
const char* line_begin;
const char* line;
const char* http_code_begin;
const char* http_code;
const char* http_code_end;
const char* line_end;
const char* line_separate; //行之间的分割符(如json之行的,)
const char* mark_end;
const char* all_end;
}resp_format_t;
#define COMMENT_CLEAN "clean=true, query stats and set the all query data to zero in the share memory."
#define COMMENT_FMT "fmt=[html|json|text], The default is text."
#define COMMENT_STAT_NAME "stats_name=[%s], The default is all."
static resp_format_t fmt_plaintext = {
.comment_begin="# Optional parameters:\n",
.comment_clean="# "COMMENT_CLEAN"\n",
.comment_fmt="# "COMMENT_FMT"\n",
.comment_stats_name="# "COMMENT_STAT_NAME"\n",
.mark_begin=NULL,
.title_line="key\tstats_time\trequest\trecv\tsent\tavg_time\tstatus\n",
.line_begin=NULL, //
.line="%V\t%s\t%uD\t%uL\t%uL\t%.1f\t",
.http_code_begin=NULL,.http_code=" %03d:%d,",.http_code_end=NULL,
.line_end="\n",
.mark_end=NULL
};
static resp_format_t fmt_html = {
.all_begin="<head>\n"
"<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />\n"
"<title>Stats</title></head><body>\n",
.all_end="</body>\n",
.comment_begin="<table width=\"1200\" align='center'>\n"
"<tr><td>Optional parameters:</td></tr>\n"
"<tr>\n<td>\n<ul>\n",
.comment_clean="<li>"COMMENT_CLEAN"</li>\n",
.comment_fmt="<li>"COMMENT_FMT"</li>\n",
.comment_stats_name="<li>"COMMENT_STAT_NAME"</li>\n",
.comment_end="</ul>\n</td>\n</tr>\n</table>\n",
.mark_begin="<table width=\"1200\" bgcolor=\"#FFFFFF\" align=\"center\">\n",
.title_line="<tr bgcolor=\"#666666\" height=\"25\"><td>key</td><td>stats_time</td><td>request</td><td>recv</td><td>sent</td><td>avg_time</td><td>status</td></tr>\n",
.line_begin="<tr height=\"20\" bgcolor=\"#CCCCCC\">",
.line="<td nowrap='nowrap'>%V</td><td nowrap='nowrap'>%s</td><td nowrap='nowrap'>%uD</td><td nowrap='nowrap'>%uL</td><td nowrap='nowrap'>%uL</td><td nowrap='nowrap'>%.1f</td><td>",
.http_code_begin=NULL,
.http_code=" %03d:%d|",
.http_code_end=NULL,
.line_end="</td></tr>\n",
.mark_end="</table>"
};
static resp_format_t fmt_json = {
.all_begin="{",
.all_end="}\n",
.comment_begin="\"Optional parameters\":{\n",
.comment_end="},\n",
.comment_clean="\"clean\":\""COMMENT_CLEAN"\",\n",
.comment_fmt="\"fmt\":\""COMMENT_FMT"\",\n",
.comment_stats_name="\"stats_name\":[\"%s\"]\n",
.mark_begin="\"request-stat\":{\n",
.title_line=NULL,
.line_begin=NULL, //
.line="\"%V\":{\"stats_time\":\"%s\",\"request\":%uD,\"recv\":%uL,\"sent\":%uL,\"avg_time\":%.1f,",
.http_code_begin="\"status\":{",
.http_code="\"%03d\":%d,",
.http_code_end="}",
.line_end="}",
.line_separate=",\n",
.mark_end="}\n"
};
#define ngx_sappend(buf, format, args...); \
if(format!=NULL){\
buf = ngx_sprintf(buf,format, ##args);\
}
typedef struct {
ngx_int_t clean; //取得统计信息后，将原来的信息清0.
resp_format_t* fmt; //输出格式串
ngx_buf_t* buf;
ngx_str_t* stats_name;//当有该参数时，只取该统计项的值。
ngx_uint_t stats_name_user_flags;
ngx_http_request_t* r;
ngx_int_t line; //当前行,从1开始。
}foreach_args_t;
void request_stats_foreach(ngx_shmap_node_t* node, void* extarg)
{
foreach_args_t* args = (foreach_args_t*)extarg;
ngx_buf_t* buf = args->buf;
ngx_http_request_t* r = args->r;
resp_format_t* fmt = args->fmt;
char buf_time[32];
ngx_memzero(buf_time,sizeof(buf_time));
if(args->stats_name_user_flags > 0 && node->user_flags != args->stats_name_user_flags){
return;
}
if(request_stats_check_buf_size(r, buf)!=NGX_OK){
ngx_log_error(NGX_LOG_WARN, r->connection->log, 0,
"request_stats_check_buf_size() failed!");
return;
}
ngx_str_t key = {(size_t)node->key_len, node->data};
request_stats_value_t* value = (request_stats_value_t*)(node->data+node->key_len);
if(value->request_count < 1){
return;
}
args->line++;
if(args->line > 1){
ngx_sappend(buf->last, fmt->line_separate);
}
ngx_sappend(buf->last, fmt->line_begin);
uint32_t request_count = value->request_count<1?1:value->request_count;
time_t stats_time = (time_t)value->stats_time;
ngx_sappend(buf->last, fmt->line,
&key, time2str(&stats_time, buf_time, sizeof(buf_time)),
value->request_count,
value->recv, value->sent,
value->request_time/(request_count*1.0)
);
unsigned i;
int del_comma = 0;
ngx_sappend(buf->last, fmt->http_code_begin);
for(i=0;i<HTTP_CODE_CNT;i++){
if(value->req_count_detail[i] > 0){
int http_code = status_codes[i];
del_comma = 1;
buf->last = ngx_sprintf(buf->last,fmt->http_code,http_code,value->req_count_detail[i]);
}
}
if(del_comma){ buf->last-=1;}
ngx_sappend(buf->last, fmt->http_code_end);
ngx_sappend(buf->last, fmt->line_end);
if(args->clean>0){
ngx_memzero(value, sizeof(request_stats_value_t));
value->stats_time = (uint32_t)ngx_time();
}
}
ngx_int_t ngx_http_request_stats_query_handler(ngx_http_request_t *r)
{
ngx_int_t rc = NGX_HTTP_OK;
unsigned i;
if (!(r->method & NGX_HTTP_GET)) {
return NGX_HTTP_NOT_ALLOWED;
}
ngx_http_request_stats_main_conf_t *lmcf;
lmcf = ngx_http_get_module_main_conf(r, ngx_http_request_stats_module);
foreach_args_t foreach_args;
ngx_memzero(&foreach_args,sizeof(foreach_args));
resp_format_t* fmt = &fmt_plaintext;
ngx_str_t content_type = ngx_string("text/plain");
/******************* request para parse ****************/
ngx_str_t stats_name = ngx_null_string;
if(ngx_http_arg(r, (u_char*)"stats_name", sizeof("stats_name")-1, &stats_name) == NGX_OK){
if(stats_name.len > 0){
foreach_args.stats_name = &stats_name;
foreach_args.stats_name_user_flags = ngx_crc32_long(stats_name.data,stats_name.len);
}
}
ngx_str_t szclean = ngx_null_string;
if(ngx_http_arg(r, (u_char*)"clean", sizeof("clean")-1, &szclean) == NGX_OK){
if(szclean.len > 0 && ngx_strncmp(szclean.data, "true",4)==0){
foreach_args.clean = 1;
}
}
ngx_str_t szfmt = ngx_null_string;
if(ngx_http_arg(r, (u_char*)"fmt", sizeof("fmt")-1, &szfmt) == NGX_OK){
if(ngx_strncmp(szfmt.data, "html",4)==0){
fmt = &fmt_html;
static ngx_str_t content_type_html = ngx_string("text/html");
content_type = content_type_html;
}else if(ngx_strncmp(szfmt.data, "json",4)==0){
fmt = &fmt_json;
static ngx_str_t content_type_json = ngx_string("application/json");
content_type = content_type_json;
}
}
ngx_buf_t* buf = ngx_create_temp_buf(r->connection->pool, 4096);
if (buf == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
ngx_chain_t* out = ngx_alloc_chain_link(r->pool);
if(out == NULL){
return NGX_HTTP_INITING_REQUEST_STATE;
}
ngx_sappend(buf->last, fmt->all_begin);
if(stats_name.len < 1){
stats_name_t* stats_names = lmcf->stats_names->elts;
u_char stats_name_buf[2048];
ngx_memzero(stats_name_buf,sizeof(stats_name_buf));
u_char* p = stats_name_buf;
for(i=0;i<lmcf->stats_names->nelts;i++){
if(i==lmcf->stats_names->nelts-1){
ngx_sappend(p," %V", &stats_names[i].name);
}else{
ngx_sappend(p," %V|", &stats_names[i].name);
}
}
ngx_sappend(buf->last, fmt->comment_begin);
ngx_sappend(buf->last, fmt->comment_clean);
ngx_sappend(buf->last, fmt->comment_fmt);
ngx_sappend(buf->last, fmt->comment_stats_name, stats_name_buf);
ngx_sappend(buf->last, fmt->comment_end);
}
ngx_sappend(buf->last, fmt->mark_begin);
ngx_sappend(buf->last, fmt->title_line);
foreach_args.fmt = fmt;
foreach_args.buf = buf;
foreach_args.r = r;
//foreach_args.buf[0] = buf;
//foreach_args.index = 0;
ngx_shmap_foreach(lmcf->shmap, &request_stats_foreach, &foreach_args);
ngx_sappend(buf->last, fmt->mark_end);
ngx_sappend(buf->last, fmt->all_end);
out->buf = buf;
out->next = NULL;
r->headers_out.content_type = content_type;
r->headers_out.status = NGX_HTTP_OK;
r->headers_out.content_length_n = ngx_buf_size(buf);
buf->last_buf = (r == r->main) ? 1 : 0;
rc = ngx_http_send_header(r);
if (rc == NGX_ERROR || rc > NGX_OK || r->header_only) {
return rc;
}
return ngx_http_output_filter(r, out);
}
ngx_int_t
ngx_http_request_stats_log_handler(ngx_http_request_t *r)
{
u_char *buf_key, *p_key;
size_t len_key;
ngx_uint_t i, l;
ngx_http_request_stats_t *stat;
//ngx_open_file_t *file;
ngx_http_request_stats_op_t *op_key;
ngx_http_request_stats_loc_conf_t *lcf;
ngx_http_request_stats_main_conf_t *lmcf;
lmcf = ngx_http_get_module_main_conf(r, ngx_http_request_stats_module);
//ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->stat, 0,
// "http req stat handler");
lcf = ngx_http_get_module_loc_conf(r, ngx_http_request_stats_module);
if (lcf->off || lcf->stats == NULL) {
return NGX_OK;
}
stat = lcf->stats->elts;
for (l = 0; l < lcf->stats->nelts; l++) {
//############# key ###################
ngx_http_script_flush_no_cacheable_variables(r, stat[l].key->flushes);
len_key = 0;
op_key = stat[l].key->ops->elts;
for (i = 0; i < stat[l].key->ops->nelts; i++) {
if (op_key[i].len == 0) {
len_key += op_key[i].getlen(r, op_key[i].data);
} else {
len_key += op_key[i].len;
}
}
buf_key = ngx_pcalloc(r->pool, len_key+1);
if (buf_key == NULL) {
return NGX_ERROR;
}
p_key = buf_key;
for (i = 0; i < stat[l].key->ops->nelts; i++) {
p_key = op_key[i].run(r, p_key, &op_key[i]);
}
ngx_str_t key = {p_key-buf_key, buf_key};
uint32_t user_flag = ngx_crc32_long(stat[l].stats_name.data, stat[l].stats_name.len);
request_stats_value_t* value=NULL;
ngx_int_t rc = 0;
rc = ngx_http_request_stats_shm_get_ex(r, &key, user_flag, &value);
if(rc == NGX_OK && value != NULL){
atom_add(&value->request_count,1);
atom_add(&value->recv, (uint64_t)r->request_length);
atom_add(&value->sent, (uint64_t)r->connection->sent);
ngx_uint_t status;
if (r->err_status) {
status = r->err_status;
} else if (r->headers_out.status) {
status = r->headers_out.status;
} else if (r->http_version == NGX_HTTP_VERSION_9) {
status = 9;
} else {
status = 0;
}
int sidx = -1;
if(status < sizeof(g_code_index)){
sidx = g_code_index[status];
if(sidx >=0 && sidx < HTTP_CODE_CNT){
atom_add(&value->req_count_detail[sidx],1);
}
}
/************** request_time ****************/
ngx_time_t *tp;
ngx_int_t ms;
tp = ngx_timeofday();
ms = (ngx_int_t)((tp->sec - r->start_sec) * 1000
+ (tp->msec - r->start_msec));
ms = ngx_max(ms, 0);
atom_add(&value->request_time, (uint64_t)ms);
}
}
return NGX_OK;
}
static u_char *
ngx_http_request_stats_copy_short(ngx_http_request_t *r, u_char *buf,
ngx_http_request_stats_op_t *op)
{
size_t len;
uintptr_t data;
len = op->len;
data = op->data;
while (len--) {
*buf++ = (u_char) (data & 0xff);
data >>= 8;
}
return buf;
}
static u_char *
ngx_http_request_stats_copy_long(ngx_http_request_t *r, u_char *buf,
ngx_http_request_stats_op_t *op)
{
return ngx_cpymem(buf, (u_char *) op->data, op->len);
}
static ngx_int_t
ngx_http_request_stats_variable_compile(ngx_conf_t *cf, ngx_http_request_stats_op_t *op,
ngx_str_t *value)
{
ngx_int_t index;
index = ngx_http_get_variable_index(cf, value);
if (index == NGX_ERROR) {
return NGX_ERROR;
}
op->len = 0;
op->getlen = ngx_http_request_stats_variable_getlen;
op->run = ngx_http_request_stats_variable;
op->data = index;
return NGX_OK;
}
static size_t
ngx_http_request_stats_variable_getlen(ngx_http_request_t *r, uintptr_t data)
{
uintptr_t len;
ngx_http_variable_value_t *value;
value = ngx_http_get_indexed_variable(r, data);
if (value == NULL || value->not_found) {
return 1;
}
//UTF8等编码不进行转义 (转的话，会转成\\xE5\\xAE之类的，然后导致json_c解析失败。)
len = 0;
value->escape = len ? 1 : 0;
return value->len + len * 3;
}
static u_char *
ngx_http_request_stats_variable(ngx_http_request_t *r, u_char *buf, ngx_http_request_stats_op_t *op)
{
ngx_http_variable_value_t *value;
value = ngx_http_get_indexed_variable(r, op->data);
if (value == NULL || value->not_found) {
*buf = '-';
return buf + 1;
}
return ngx_cpymem(buf, value->data, value->len);
}
static void *
ngx_http_request_stats_create_main_conf(ngx_conf_t *cf)
{
ngx_http_request_stats_main_conf_t *conf;
conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_request_stats_main_conf_t));
if (conf == NULL) {
return NULL;
}
conf->shmap_size= NGX_CONF_UNSET_SIZE;
conf->shmap_exptime = NGX_CONF_UNSET;
return conf;
}
static char* ngx_http_request_stats_init_main_conf(ngx_conf_t *cf, void *conf)
{
ngx_http_request_stats_main_conf_t *rscf = conf;
if(rscf->shmap_size == NGX_CONF_UNSET_SIZE)rscf->shmap_size = 1024*1024*32;
if(rscf->shmap_exptime == NGX_CONF_UNSET)rscf->shmap_exptime = 3600*24*2;
return NGX_CONF_OK;
}
static void *
ngx_http_request_stats_create_loc_conf(ngx_conf_t *cf)
{
ngx_http_request_stats_loc_conf_t *conf;
conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_request_stats_loc_conf_t));
if (conf == NULL) {
return NULL;
}
conf->off = 0;
conf->request_stats_query = NGX_CONF_UNSET;
return conf;
}
static char *
ngx_http_request_stats_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
{
ngx_http_request_stats_loc_conf_t *prev = parent;
ngx_http_request_stats_loc_conf_t *conf = child;
ngx_conf_merge_value(conf->request_stats_query, prev->request_stats_query, 0);
if (conf->stats || conf->off) {
return NGX_CONF_OK;
}
conf->stats = prev->stats;
conf->off = prev->off;
if (conf->stats || conf->off) {
return NGX_CONF_OK;
}
return NGX_CONF_OK;
}
static char *
ngx_http_request_stats_set_request_stat(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_request_stats_loc_conf_t *llcf = conf;
ngx_str_t *value;
ngx_http_request_stats_t *stat;
//ngx_http_request_stats_key_t *key;
ngx_http_request_stats_main_conf_t *lmcf;
value = cf->args->elts;
if (ngx_strcmp(value[1].data, "off") == 0) {
llcf->off = 1;
if (cf->args->nelts == 2) {
return NGX_CONF_OK;
}
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid parameter \"%V\"", &value[2]);
return NGX_CONF_ERROR;
}else if(cf->args->nelts != 3) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid config \"%V\", missing param!", &value[0]);
return NGX_CONF_ERROR;
}
if (llcf->stats == NULL) {
llcf->stats = ngx_array_create(cf->pool, 2, sizeof(ngx_http_request_stats_t));
if (llcf->stats == NULL) {
return NGX_CONF_ERROR;
}
}
lmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_request_stats_module);
stat = ngx_array_push(llcf->stats);
if (stat == NULL) {
return NGX_CONF_ERROR;
}
ngx_memzero(stat, sizeof(ngx_http_request_stats_t));
stat->stats_name = value[1];
if(lmcf->stats_names == NULL){
lmcf->stats_names = ngx_array_create(cf->pool, 8, sizeof(stats_name_t));
if (lmcf->stats_names == NULL) {
return NGX_CONF_ERROR;
}
}
unsigned i;
int exist = 0;
uint32_t user_flags = ngx_crc32_long(stat->stats_name.data,stat->stats_name.len);
stats_name_t* stats_names = lmcf->stats_names->elts;
for(i=0;i<lmcf->stats_names->nelts;i++){
if(stats_names[i].user_flags == user_flags){
exist = 1;
break;
}
}
if(!exist){
stats_name_t* new_stats_name = ngx_array_push(lmcf->stats_names);
if(new_stats_name == NULL){
return NGX_CONF_ERROR;
}
new_stats_name->user_flags = user_flags;
new_stats_name->name = stat->stats_name;
}
//compile key..
stat->key = ngx_pcalloc(cf->pool, sizeof(ngx_http_request_stats_key_t));
stat->key->flushes = ngx_array_create(cf->pool, 4, sizeof(ngx_int_t));
if (stat->key->flushes == NULL) {
return NGX_CONF_ERROR;
}
stat->key->ops = ngx_array_create(cf->pool, 4, sizeof(ngx_http_request_stats_op_t));
if (stat->key->ops == NULL) {
return NGX_CONF_ERROR;
}
return ngx_http_request_stats_compile_key(cf, stat->key->flushes, stat->key->ops, cf->args, 2);
}
static char *
ngx_http_request_stats_compile_key(ngx_conf_t *cf, ngx_array_t *flushes,
ngx_array_t *ops, ngx_array_t *args, ngx_uint_t s)
{
u_char *data, *p, ch;
size_t i, len;
ngx_str_t *value, var;
ngx_int_t *flush;
ngx_uint_t bracket;
ngx_http_request_stats_op_t *op;
ngx_http_request_stats_var_t *v;
value = args->elts;
for ( /* void */ ; s < args->nelts; s++) {
i = 0;
while (i < value[s].len) {
op = ngx_array_push(ops);
if (op == NULL) {
return NGX_CONF_ERROR;
}
data = &value[s].data[i];
if (value[s].data[i] == '$') {
if (++i == value[s].len) {
goto invalid;
}
if (value[s].data[i] == '{') {
bracket = 1;
if (++i == value[s].len) {
goto invalid;
}
var.data = &value[s].data[i];
} else {
bracket = 0;
var.data = &value[s].data[i];
}
for (var.len = 0; i < value[s].len; i++, var.len++) {
ch = value[s].data[i];
if (ch == '}' && bracket) {
i++;
bracket = 0;
break;
}
if ((ch >= 'A' && ch <= 'Z')
|| (ch >= 'a' && ch <= 'z')
|| (ch >= '0' && ch <= '9')
|| ch == '_')
{
continue;
}