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https://github.com/friendica/friendica
synced 2024-10-14 17:31:31 +02:00
Backend/Frontend detection when checking for overload
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parent
0344d26896
commit
b3c8ff836d
95
boot.php
95
boot.php
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@ -475,6 +475,7 @@ class App {
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public $performance = array();
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public $callstack = array();
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public $theme_info = array();
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public $backend = true;
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public $nav_sel;
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@ -1111,6 +1112,80 @@ class App {
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return($this->is_friendica_app);
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}
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/**
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* @brief Checks if the site is called via a backend process
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*
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* This isn't a perfect solution. But we need this check very early.
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* So we cannot wait until the modules are loaded.
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*
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* @return bool Is it a known backend?
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*/
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function is_backend() {
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$backend = array();
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$backend[] = "_well_known";
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$backend[] = "api";
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$backend[] = "dfrn_notify";
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$backend[] = "dfrn_poll";
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$backend[] = "fetch";
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$backend[] = "hcard";
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$backend[] = "hostxrd";
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$backend[] = "nodeinfo";
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$backend[] = "noscrape";
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$backend[] = "p";
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$backend[] = "photo";
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$backend[] = "photos";
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$backend[] = "poco";
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$backend[] = "post";
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$backend[] = "proxy";
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$backend[] = "pubsub";
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$backend[] = "pubsubhubbub";
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$backend[] = "receive";
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$backend[] = "rsd_xml";
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$backend[] = "salmon";
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$backend[] = "statistics_json";
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$backend[] = "xrd";
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if (in_array($this->module, $backend))
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return(true);
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else
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return($this->backend);
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}
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/**
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* @brief Checks if the maximum number of database processes is reached
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*
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* @return bool Is the limit reached?
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*/
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function max_processes_reached() {
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// Is the function called statically?
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if (!is_object($this))
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return(self::$a->max_processes_reached());
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if ($this->is_backend()) {
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$process = "backend";
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$max_processes = get_config('system', 'max_processes_backend');
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if (intval($max_processes) == 0)
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$max_processes = 5;
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} else {
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$process = "frontend";
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$max_processes = get_config('system', 'max_processes_frontend');
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if (intval($max_processes) == 0)
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$max_processes = 20;
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}
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$processlist = dbm::processlist();
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if ($processlist["list"] != "") {
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logger("Processcheck: Processes: ".$processlist["amount"]." - Processlist: ".$processlist["list"], LOGGER_DEBUG);
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if ($processlist["amount"] > $max_processes) {
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logger("Processcheck: Maximum number of processes for ".$process." tasks (".$max_processes.") reached.", LOGGER_DEBUG);
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return true;
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}
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}
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return false;
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}
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/**
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* @brief Checks if the maximum load is reached
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*
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@ -1118,14 +1193,26 @@ class App {
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*/
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function maxload_reached() {
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$maxsysload = intval(get_config('system', 'maxloadavg'));
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if ($maxsysload < 1)
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$maxsysload = 50;
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// Is the function called statically?
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if (!is_object($this))
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return(self::$a->maxload_reached());
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if ($this->is_backend()) {
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$process = "backend";
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$maxsysload = intval(get_config('system', 'maxloadavg'));
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if ($maxsysload < 1)
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$maxsysload = 50;
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} else {
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$process = "frontend";
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$maxsysload = intval(get_config('system','maxloadavg_frontend'));
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if ($maxsysload < 1)
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$maxsysload = 50;
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}
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$load = current_load();
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if ($load) {
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if (intval($load) > $maxsysload) {
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logger('system: load '.$load.' too high.');
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logger('system: load '.$load.' for '.$process.' tasks ('.$maxsysload.') too high.');
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return true;
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}
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}
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45
index.php
45
index.php
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@ -19,6 +19,10 @@ require_once('object/BaseObject.php');
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$a = new App;
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BaseObject::set_app($a);
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// We assume that the index.php is called by a frontend process
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// The value is set to "true" by default in boot.php
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$a->backend = false;
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/**
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*
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* Load the configuration file which contains our DB credentials.
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@ -54,36 +58,12 @@ if(!$install) {
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load_config('config');
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load_config('system');
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$processlist = dbm::processlist();
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if ($processlist["list"] != "") {
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logger("Processcheck: Processes: ".$processlist["amount"]." - Processlist: ".$processlist["list"], LOGGER_DEBUG);
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$max_processes = get_config('system', 'max_processes_frontend');
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if (intval($max_processes) == 0)
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$max_processes = 20;
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if ($processlist["amount"] > $max_processes) {
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logger("Processcheck: Maximum number of processes for frontend tasks (".$max_processes.") reached.", LOGGER_DEBUG);
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system_unavailable();
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}
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if ($a->max_processes_reached() OR $a->maxload_reached()) {
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header($_SERVER["SERVER_PROTOCOL"].' 503 Service Temporarily Unavailable');
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header('Retry-After: 300');
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die("System is currently unavailable. Please try again later");
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}
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$maxsysload_frontend = intval(get_config('system','maxloadavg_frontend'));
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if($maxsysload_frontend < 1)
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$maxsysload_frontend = 50;
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$load = current_load();
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if($load) {
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if($load > $maxsysload_frontend) {
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logger('system: load ' . $load . ' too high. Service Temporarily Unavailable.');
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header($_SERVER["SERVER_PROTOCOL"].' 503 Service Temporarily Unavailable');
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header('Retry-After: 300');
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die("System is currently unavailable. Please try again later");
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}
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}
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if (get_config('system','force_ssl') AND ($a->get_scheme() == "http") AND
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(intval(get_config('system','ssl_policy')) == SSL_POLICY_FULL) AND
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(substr($a->get_baseurl(), 0, 8) == "https://")) {
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@ -114,9 +94,12 @@ load_translation_table($lang);
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*
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*/
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$stamp1 = microtime(true);
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session_start();
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$a->save_timestamp($stamp1, "parser");
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// Exclude the backend processes from the session management
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if (!$a->is_backend()) {
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$stamp1 = microtime(true);
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session_start();
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$a->save_timestamp($stamp1, "parser");
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}
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/**
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* Language was set earlier, but we can over-ride it in the session.
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