ngx_http_log_variable_compile 128 src/http/modules/ngx_http_log_module.c static ngx_int_t ngx_http_log_variable_compile(ngx_conf_t *cf, ngx_http_log_variable_compile 1578 src/http/modules/ngx_http_log_module.c if (ngx_http_log_variable_compile(cf, op, &var) != NGX_OK) {