156 lines
4.1 KiB
PHP
156 lines
4.1 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Cache\Adapter;
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use Psr\Cache\CacheItemInterface;
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use Psr\Log\LoggerAwareInterface;
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use Symfony\Component\Cache\CacheItem;
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use Symfony\Component\Cache\ResettableInterface;
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use Symfony\Component\Cache\Traits\ArrayTrait;
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/**
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* @author Nicolas Grekas <p@tchwork.com>
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*/
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class ArrayAdapter implements AdapterInterface, LoggerAwareInterface, ResettableInterface
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{
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use ArrayTrait;
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private $createCacheItem;
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/**
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* @param int $defaultLifetime
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* @param bool $storeSerialized Disabling serialization can lead to cache corruptions when storing mutable values but increases performance otherwise
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*/
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public function __construct($defaultLifetime = 0, $storeSerialized = true)
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{
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$this->storeSerialized = $storeSerialized;
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$this->createCacheItem = \Closure::bind(
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function ($key, $value, $isHit) use ($defaultLifetime) {
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$item = new CacheItem();
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$item->key = $key;
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$item->value = $value;
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$item->isHit = $isHit;
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$item->defaultLifetime = $defaultLifetime;
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return $item;
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},
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null,
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CacheItem::class
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);
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}
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/**
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* {@inheritdoc}
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*/
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public function getItem($key)
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{
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$isHit = $this->hasItem($key);
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try {
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if (!$isHit) {
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$this->values[$key] = $value = null;
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} elseif (!$this->storeSerialized) {
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$value = $this->values[$key];
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} elseif ('b:0;' === $value = $this->values[$key]) {
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$value = false;
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} elseif (false === $value = unserialize($value)) {
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$this->values[$key] = $value = null;
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$isHit = false;
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}
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} catch (\Exception $e) {
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CacheItem::log($this->logger, 'Failed to unserialize key "{key}"', array('key' => $key, 'exception' => $e));
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$this->values[$key] = $value = null;
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$isHit = false;
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}
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$f = $this->createCacheItem;
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return $f($key, $value, $isHit);
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}
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/**
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* {@inheritdoc}
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*/
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public function getItems(array $keys = array())
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{
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foreach ($keys as $key) {
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CacheItem::validateKey($key);
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}
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return $this->generateItems($keys, time(), $this->createCacheItem);
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}
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/**
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* {@inheritdoc}
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*/
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public function deleteItems(array $keys)
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{
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foreach ($keys as $key) {
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$this->deleteItem($key);
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}
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return true;
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}
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/**
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* {@inheritdoc}
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*/
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public function save(CacheItemInterface $item)
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{
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if (!$item instanceof CacheItem) {
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return false;
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}
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$item = (array) $item;
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$key = $item["\0*\0key"];
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$value = $item["\0*\0value"];
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$expiry = $item["\0*\0expiry"];
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if (null !== $expiry && $expiry <= time()) {
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$this->deleteItem($key);
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return true;
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}
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if ($this->storeSerialized) {
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try {
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$value = serialize($value);
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} catch (\Exception $e) {
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$type = is_object($value) ? get_class($value) : gettype($value);
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CacheItem::log($this->logger, 'Failed to save key "{key}" ({type})', array('key' => $key, 'type' => $type, 'exception' => $e));
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return false;
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}
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}
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if (null === $expiry && 0 < $item["\0*\0defaultLifetime"]) {
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$expiry = time() + $item["\0*\0defaultLifetime"];
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}
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$this->values[$key] = $value;
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$this->expiries[$key] = null !== $expiry ? $expiry : PHP_INT_MAX;
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return true;
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}
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/**
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* {@inheritdoc}
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*/
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public function saveDeferred(CacheItemInterface $item)
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{
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return $this->save($item);
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}
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/**
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* {@inheritdoc}
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*/
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public function commit()
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{
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return true;
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}
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}
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