static ngx_int_t
ngx_http_sysguard_handler(ngx_http_request_t *r)
{
ngx_http_limit_conn_conf_t *lccf;
lccf = ngx_http_get_module_loc_conf(r, ngx_http_limit_conn_module);
if (!lccf->sysguard_enable) {
return NGX_OK;
}
if (r->limit_conn_set) {
return NGX_DECLINED;
}
/* load */
if (lccf->load != NGX_CONF_UNSET) {
if (ngx_http_sysguard_cached_load_exptime < ngx_time()) {
ngx_http_sysguard_update_load(r, lccf->interval);
}
ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http sysguard handler load: %1.3f %1.3f %V",
ngx_http_sysguard_cached_load * 1.0 / 1000,
lccf->load * 1.0 / 1000,
&r->uri);
if (ngx_http_sysguard_cached_load > lccf->load) {
ngx_log_error(lccf->log_level, r->connection->log, 0,
"sysguard load limited, current:%1.3f conf:%1.3f",
ngx_http_sysguard_cached_load * 1.0 / 1000,
lccf->load * 1.0 / 1000);
lccf->overload = 1;
return NGX_OK;
}
}
/* swap */
if (lccf->swap != NGX_CONF_UNSET) {
if (ngx_http_sysguard_cached_mem_exptime < ngx_time()) {
ngx_http_sysguard_update_mem(r, lccf->interval);
}
ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http sysguard handler swap: %i %i %V",
ngx_http_sysguard_cached_swapstat,
lccf->swap,
&r->uri);
if (ngx_http_sysguard_cached_swapstat > lccf->swap) {
ngx_log_error(lccf->log_level, r->connection->log, 0,
"sysguard swap limited, current:%i conf:%i",
ngx_http_sysguard_cached_swapstat,
lccf->swap);
lccf->overload = 1;
return NGX_OK;
}
}
/* mem free */
if (lccf->free != NGX_CONF_UNSET_SIZE) {
if (ngx_http_sysguard_cached_mem_exptime < ngx_time()) {
ngx_http_sysguard_update_mem(r, lccf->interval);
}
if (ngx_http_sysguard_cached_free != NGX_CONF_UNSET_SIZE) {
ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http sysguard handler free: %uz %uz %V",
ngx_http_sysguard_cached_free,
lccf->free,
&r->uri);
if (ngx_http_sysguard_cached_free < lccf->free) {
ngx_log_error(lccf->log_level, r->connection->log, 0,
"sysguard free limited, current:%uzM conf:%uzM",
ngx_http_sysguard_cached_free / 1024 / 1024,
lccf->free / 1024 / 1024);
lccf->overload = 1;
return NGX_OK;
}
}
}
return NGX_DECLINED;
}
static ngx_int_t
ngx_http_sysguard_handler(ngx_http_request_t *r)
{
ngx_http_sysguard_conf_t *glcf;
if (r->main->sysguard_set) {
return NGX_DECLINED;
}
glcf = ngx_http_get_module_loc_conf(r, ngx_http_sysguard_module);
if (!glcf->enable) {
return NGX_DECLINED;
}
r->main->sysguard_set = 1;
/* load */
if (glcf->load != NGX_CONF_UNSET) {
if (ngx_http_sysguard_cached_load_exptime < ngx_time()) {
ngx_http_sysguard_update_load(r, glcf->interval);
}
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http sysguard handler load: %1.3f %1.3f %V %V",
ngx_http_sysguard_cached_load * 1.0 / 1000,
glcf->load * 1.0 / 1000,
&r->uri,
&glcf->load_action);
if (ngx_http_sysguard_cached_load > glcf->load) {
ngx_log_error(glcf->log_level, r->connection->log, 0,
"sysguard load limited, current:%1.3f conf:%1.3f",
ngx_http_sysguard_cached_load * 1.0 / 1000,
glcf->load * 1.0 / 1000);
return ngx_http_sysguard_do_redirect(r, &glcf->load_action);
}
}
/* swap */
if (glcf->swap != NGX_CONF_UNSET) {
if (ngx_http_sysguard_cached_mem_exptime < ngx_time()) {
ngx_http_sysguard_update_mem(r, glcf->interval);
}
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http sysguard handler swap: %i %i %V %V",
ngx_http_sysguard_cached_swapstat,
glcf->swap,
&r->uri,
&glcf->swap_action);
if (ngx_http_sysguard_cached_swapstat > glcf->swap) {
ngx_log_error(glcf->log_level, r->connection->log, 0,
"sysguard swap limited, current:%i conf:%i",
ngx_http_sysguard_cached_swapstat,
glcf->swap);
return ngx_http_sysguard_do_redirect(r, &glcf->swap_action);
}
}
/* mem free */
if (glcf->free != NGX_CONF_UNSET_SIZE) {
if (ngx_http_sysguard_cached_mem_exptime < ngx_time()) {
ngx_http_sysguard_update_mem(r, glcf->interval);
}
if (ngx_http_sysguard_cached_free != NGX_CONF_UNSET_SIZE) {
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http sysguard handler free: %uz %uz %V %V",
ngx_http_sysguard_cached_free,
glcf->free,
&r->uri,
&glcf->free_action);
if (ngx_http_sysguard_cached_free < glcf->free) {
ngx_log_error(glcf->log_level, r->connection->log, 0,
"sysguard free limited, current:%uzM conf:%uzM",
ngx_http_sysguard_cached_free / 1024 / 1024,
glcf->free / 1024 / 1024);
return ngx_http_sysguard_do_redirect(r, &glcf->free_action);
}
}
}
return NGX_DECLINED;
}
static ngx_int_t
ngx_http_sysguard_handler(ngx_http_request_t *r)
{
ngx_http_sysguard_conf_t *glcf;
if (r->main->sysguard_set) {
return NGX_DECLINED;
}
glcf = ngx_http_get_module_loc_conf(r, ngx_http_sysguard_module);
if (!glcf->enable) {
return NGX_DECLINED;
}
r->main->sysguard_set = 1;
/* load */
if (glcf->load >= 0) {
if (ngx_http_sysguard_cached_load_exptime < ngx_time()) {
ngx_http_sysguard_update_load(r, glcf->interval);
}
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http sysguard handler load: %i %i %V %V",
ngx_http_sysguard_cached_load,
glcf->load,
&r->uri,
&glcf->load_action);
if (ngx_http_sysguard_cached_load > glcf->load) {
ngx_log_error(glcf->log_level, r->connection->log, 0,
"sysguard load limited, current:%i conf:%i",
ngx_http_sysguard_cached_load,
glcf->load);
return ngx_http_sysguard_do_redirect(r, &glcf->load_action);
}
}
/* swap */
if (glcf->swap >= 0) {
if (ngx_http_sysguard_cached_swap_exptime < ngx_time()) {
ngx_http_sysguard_update_swap(r, glcf->interval);
}
ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http sysguard handler swap: %i %i %V %V",
ngx_http_sysguard_cached_swapstat,
glcf->swap,
&r->uri,
&glcf->swap_action);
if (ngx_http_sysguard_cached_swapstat > glcf->swap) {
ngx_log_error(glcf->log_level, r->connection->log, 0,
"sysguard swap limited, current:%i conf:%i",
ngx_http_sysguard_cached_swapstat,
glcf->swap);
return ngx_http_sysguard_do_redirect(r, &glcf->swap_action);
}
}
return NGX_DECLINED;
}
