334 lines
9.3 KiB
PHP
334 lines
9.3 KiB
PHP
<?php
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/**
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* Calculer la taille du cache
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*
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* @package SPIP\memoization\Options
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**/
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// Sécurité
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if (!defined('_ECRIRE_INC_VERSION')){
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return;
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}
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/**
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* Interface MCacheBackend
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* Implémentée par les différentes méthodes disponibles
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*/
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interface MCacheBackend {
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public function init($params = null);
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public function get($key);
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public function set($key, $value, $ttl = null);
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public function exists($key);
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public function del($key);
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public function inc($key, $value = null, $ttl = null);
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public function dec($key, $value = null, $ttl = null);
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public function lock($key, /* private */ $unlock = false);
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public function unlock($key);
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public function size();
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public function purge();
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}
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/* objet MCache */
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class MCache {
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private $methode;
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private $backend;
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private $is_memory;
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public function __construct($methode = null, array $params = []){
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// Initialiser les namespace si pas encore fait
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if (isset($GLOBALS['meta']['cache_namespace'])){
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if (!defined('_CACHE_NAMESPACE')){
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define('_CACHE_NAMESPACE',
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(isset($_SERVER["SERVER_NAME"]) ? $_SERVER["SERVER_NAME"] : "cli")
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. ':'
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. (isset($_SERVER["SERVER_PORT"]) ? $_SERVER["SERVER_PORT"] : "cli")
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. ':'
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. $GLOBALS['meta']['cache_namespace']
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. ':'
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);
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}
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if (isset($GLOBALS['meta']['cache_key']) and !defined('_CACHE_KEY')){
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define('_CACHE_KEY', $GLOBALS['meta']['cache_key']);
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}
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}
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// autodetect si pas fournie
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$this->methode = $methode ? $methode : self::autodetect();
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if (!$f = find_in_path($this->methode . '.inc', "memo/", true)){
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spip_log("Methode " . $this->methode . " non implementee - fallback filecache", "memoization" . _LOG_ERREUR);
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$this->methode = 'filecache';
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require_once(find_in_path($this->methode . '.inc', "memo/"));
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}
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$this->is_memory = (!in_array($this->methode, ['filecache', 'nocache']));
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$obj = 'MCacheBackend_' . $this->methode;
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$this->backend = new $obj;
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$this->backend->init($params);
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}
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/**
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* Indiquer si la methode de cache est une méthode rapide
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* @return bool
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*/
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public function is_memory(): bool{
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return $this->is_memory;
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}
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/**
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* Lire la méthode utilisée
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* @return string
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*/
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public function methode(): string{
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return $this->methode;
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}
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/**
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* Autodetection de la methode disponible
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* @return string
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*/
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static public function autodetect(): string{
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$methodes = ['apcu', 'apc', 'xcache', 'filecache', 'nocache'];
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foreach ($methodes as $methode){
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if (self::methode_disponible($methode)){
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return $methode;
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}
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}
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// ne doit jamais arriver, car nocache est toujours disponible
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return $methode;
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}
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/**
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* @param string $methode
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* @return bool|string
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*/
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static public function methode_disponible(string $methode){
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switch ($methode) {
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case 'apc':
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return function_exists('apc_exists');
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case 'apcu':
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return function_exists('apcu_exists');
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case 'xcache':
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if (!function_exists('xcache_set')){
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return false;
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}
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@xcache_set('xcache_autodetect', 1234);
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return @xcache_get('xcache_autodetect')==1234;
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case 'memcache':
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return function_exists('memcache_set');
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case 'memcached':
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return class_exists('Memcached');
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case 'redis':
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return extension_loaded('redis');
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case 'filecache':
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case 'nocache':
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return true;
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// Methode inconnue ?
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// TODO : charger le fichier memo/xxx et chercher une methode static detect ?
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default:
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return false;
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}
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}
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/**
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* Méthode de memoization (si explicitement configurée)
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*
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* @return string|null
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*/
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public static function config_methode(){
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if (empty($GLOBALS['meta']['memoization'])){
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return null;
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}
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$cfg = @unserialize($GLOBALS['meta']['memoization']);
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if (isset($cfg['methode'])){
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return preg_replace(",\W,", "", $cfg['methode']);
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}
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return null;
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}
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static public function config_redis_server(){
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$cfg = @unserialize($GLOBALS['meta']['memoization']);
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if (!$cfg || !isset($cfg['redis_type']) || empty($cfg['redis_type'])){
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$cfg = array(
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'redis_type' => 'serveur',
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'redis_server' => '127.0.0.1:6379',
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'redis_sock' => '/tmp/redis.sock',
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'redis_auth' => '',
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'redis_dbindex' => 0,
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'redis_serializer' => 'php',
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);
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}
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return $cfg;
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}
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// outil pour memcache (hosts et ports a configurer dans le CFG)
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static public function config_memcache_servers(){
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$cfg = @unserialize($GLOBALS['meta']['memoization']);
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if (!$cfg = $cfg['memcache_servers']){
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$cfg = 'localhost:11211';
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}
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preg_match_all('/[a-z0-9._-]*(?::\d+)/', $cfg, $s, PREG_PATTERN_ORDER);
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return $s[0];
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}
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/* Proxies vers le backend */
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public function get($key){return $this->backend->get($key);}
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public function set($key, $value, $ttl = null){return $this->backend->set($key, $value, $ttl);}
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public function exists($key){return $this->backend->exists($key);}
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public function del($key){return $this->backend->del($key);}
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public function inc($key, $value = null, $ttl = null){return $this->backend->inc($key, $value, $ttl);}
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public function dec($key, $value = null, $ttl = null){return $this->backend->dec($key, $value, $ttl);}
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public function lock($key){return $this->backend->lock($key);}
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public function unlock($key){return $this->backend->unlock($key);}
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public function size(){return $this->backend->size();}
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public function purge(){return $this->backend->purge();}
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/* Cache Editorial */
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/**
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* Recuperer de l'editorial cache, mais invalide avec la meta derniere_modif ou avec un var_mode
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* @param string $key
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* @return string
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*/
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public function edito_get($key){
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if (!_VAR_MODE
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and $cache = $this->get("::edito::{$key}")
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and isset($cache['time'])
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and isset($cache['value'])
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and (!isset($GLOBALS['meta']['derniere_modif']) or $cache['time']>$GLOBALS['meta']['derniere_modif'])){
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return $cache['value'];
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}
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return null;
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}
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/**
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* Stocker de l'editorial cache, avec un timestamp pour gerer l'invalidation
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* @param string $key
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* @param mixed $value
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* @return mixed
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*/
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public function edito_set($key, $value){
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$cache = array('value' => $value, 'time' => $_SERVER['REQUEST_TIME']);
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$this->set("::edito::$key", $cache);
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return $value;
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}
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}
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/**
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* Interface principale d'utilisation de Memoization
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* @return MCache
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*/
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function memoization(): MCache{
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static $Memoization = null;
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if (is_null($Memoization)){
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$Memoization = new MCache(MCache::config_methode());
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}
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return $Memoization;
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}
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/* Interface procedurale */
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function cache_get($key){return memoization()->get($key);}
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function cache_set($key, $value, $ttl = null): bool{return memoization()->set($key, $value, $ttl);}
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function cache_exists($key): bool{return memoization()->exists($key);}
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function cache_del($key): bool{return memoization()->del($key);}
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function cache_inc($key, $value = null, $ttl = null): int{return memoization()->inc($key, $value, $ttl);}
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function cache_dec($key, $value = null, $ttl = null): int{return memoization()->dec($key, $value, $ttl);}
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function cache_lock($key){return memoization()->lock($key);}
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function cache_unlock($key){return memoization()->unlock($key);}
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function cache_purge(){return memoization()->purge();}
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/**
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* Cache Editorial : le contenu memoizé est invalidé quand le cache SPIP est invalidé
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*/
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function cache_edito_get($key){return memoization()->edito_get($key);}
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function cache_edito_set($key, $value){return memoization()->edito_set($key, $value);}
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/**
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* Cache a function's result cache_me()
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* (c) Fil 2009 - Double-licensed under the GNU/LGPL and MIT licenses
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* http://zzz.rezo.net/-SPIP-
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* Usage:
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* In any cacheable function add at top:
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* if(!is_null($c=cache_me())) return$c;
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*/
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if (!function_exists('debug_backtrace')){
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function cache_me($vars = null, $ttl = 3600){
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return;
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}
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} else {
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/**
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* @param null|mixed $vars other variables that could change the result
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* in addition to the function's args that are automatically taken into account
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* @param int $ttl time to live
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* @return false|mixed
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*/
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function cache_me($vars = null, $ttl = 3600){
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// uniquement si on a une methode de cache rapide (en memoire)
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if (!memoization()->is_memory()){
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return null;
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}
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$trace = debug_backtrace();
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$trace = $trace[1];
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if (isset($trace['object'])){
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$fun = [$trace['object'], $trace['function']];
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} else {
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$fun = $trace['function'];
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}
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$key = md5(json_encode(['function' => $fun, 'args' => $trace['args'], 'vars' => $vars]));
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if (!memoization()->exists($key)){
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memoization()->set($key, null, $ttl);
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// eviter une boucle infinie par re-entrance si memoization est actif mais n'a pas de memoire dispo
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if (!memoization()->exists($key)) {
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return null;
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}
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$r = call_user_func_array($fun, $trace['args']);
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memoization()->set($key, $r, $ttl);
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return $r;
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}
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return memoization()->get($key);
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}
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}
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/**
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* Filtres pour le formulaire de configuration
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*/
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/**
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* @param null|string $methode
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* @return bool|string
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*/
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function memoization_methode($methode = null){
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return MCache::methode_disponible($methode);
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}
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/**
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* @return array
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*/
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function memoization_redis_liste_serializer(){
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$serializers = array();
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if (defined('Redis::SERIALIZER_IGBINARY') && extension_loaded('igbinary')){
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$serializers['igbinary'] = array('libelle' => 'SERIALIZER_IGBINARY', 'statut' => 'actif');
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} else {
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$serializers['igbinary'] = array('libelle' => 'SERIALIZER_IGBINARY', 'statut' => 'inactif');
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}
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$serializers['php'] = array('libelle' => 'SERIALIZER_PHP', 'statut' => 'actif');
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return $serializers;
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}
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