Get rid of unnecessary request_id_header command

Author: newobj

README.md

@@ -15,9 +15,7 @@ USAGE
 
 1) Add `--add-module=../git/nginx-x-rid-header` to your nginx configure command. On Linux, you should also add `--with-ld-opt=-lossp-uuid` or whatever flavor of uuid-devel comes with your distribution. Now `make` and `make install`.
 
-2) At the http {} level of you config file, add the argument-less directive `request_id_header;`
-
-3) You now have access to a `$request_id` variable. Suggested use:
+2) You now have access to a `$request_id` variable. Suggested use:
 
     log_format main  '$remote_addr - $remote_user [$time_local] "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent" "$http_x_forwarded_for" - $connection $request_time $upstream_cache_status $request_id';
     server {
@@ -29,4 +27,4 @@ USAGE
         }
     }
 
-4) On your backend (8080), you can pull the request header `x-exampledotcom-rid`, and log it or tie it to whatever you may like. This makes it really easy to correlate backend exceptions or instrumentation with frontend http request logs.
+3) On your backend (8080), you can pull the request header `x-exampledotcom-rid`, and log it or tie it to whatever you may like. This makes it really easy to correlate backend exceptions or instrumentation with frontend http request logs.

ngx_x_rid_header_module.c

@@ -16,7 +16,6 @@
 // TODO:
 //
 // * make the name of the variable configurable
-// * is there a more portable way of getting uuid in here?
 
 ngx_int_t ngx_x_rid_header_get_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) {
   u_char *p;     
@@ -86,17 +85,7 @@ static ngx_http_module_t  ngx_x_rid_header_module_ctx = {
   NULL         /* merge location configuration */
 };                        
 
-char* ngx_x_rid_header_conf(ngx_conf_t* cf, ngx_command_t* cmd, void* conf) {                                                                          
-  return NGX_CONF_OK;
-}
-
 static ngx_command_t  ngx_x_rid_header_module_commands[] = {
-  { ngx_string("request_id_header"),
-    NGX_HTTP_MAIN_CONF|NGX_CONF_NOARGS,
-    ngx_x_rid_header_conf,
-    NGX_HTTP_MAIN_CONF_OFFSET,
-    0,
-    NULL },
   ngx_null_command
 };