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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Cache\Adapter;
use Psr\Cache\CacheItemInterface;
use Psr\Log\LoggerAwareInterface;
use Symfony\Component\Cache\CacheItem;
use Symfony\Component\Cache\ResettableInterface;
use Symfony\Component\Cache\Traits\ArrayTrait;
use Symfony\Contracts\Cache\CacheInterface;
/**
* @author Nicolas Grekas <p@tchwork.com>
*/
class ArrayAdapter implements AdapterInterface, CacheInterface, LoggerAwareInterface, ResettableInterface
{
use ArrayTrait;
private $createCacheItem;
private $defaultLifetime;
/**
* @param bool $storeSerialized Disabling serialization can lead to cache corruptions when storing mutable values but increases performance otherwise
*/
public function __construct(int $defaultLifetime = 0, bool $storeSerialized = true)
{
$this->defaultLifetime = $defaultLifetime;
$this->storeSerialized = $storeSerialized;
$this->createCacheItem = \Closure::bind(
static function ($key, $value, $isHit) {
$item = new CacheItem();
$item->key = $key;
$item->value = $value;
$item->isHit = $isHit;
return $item;
},
null,
CacheItem::class
);
}
/**
* {@inheritdoc}
*/
public function get(string $key, callable $callback, float $beta = null, array &$metadata = null)
{
$item = $this->getItem($key);
$metadata = $item->getMetadata();
// ArrayAdapter works in memory, we don't care about stampede protection
if (\INF === $beta || !$item->isHit()) {
$save = true;
$this->save($item->set($callback($item, $save)));
}
return $item->get();
}
/**
* {@inheritdoc}
*/
public function getItem($key)
{
if (!$isHit = $this->hasItem($key)) {
$this->values[$key] = $value = null;
} else {
$value = $this->storeSerialized ? $this->unfreeze($key, $isHit) : $this->values[$key];
}
$f = $this->createCacheItem;
return $f($key, $value, $isHit);
}
/**
* {@inheritdoc}
*/
public function getItems(array $keys = [])
{
foreach ($keys as $key) {
if (!\is_string($key) || !isset($this->expiries[$key])) {
CacheItem::validateKey($key);
}
}
return $this->generateItems($keys, microtime(true), $this->createCacheItem);
}
/**
* {@inheritdoc}
*
* @return bool
*/
public function deleteItems(array $keys)
{
foreach ($keys as $key) {
$this->deleteItem($key);
}
return true;
}
/**
* {@inheritdoc}
*
* @return bool
*/
public function save(CacheItemInterface $item)
{
if (!$item instanceof CacheItem) {
return false;
}
$item = (array) $item;
$key = $item["\0*\0key"];
$value = $item["\0*\0value"];
$expiry = $item["\0*\0expiry"];
if (0 === $expiry) {
$expiry = \PHP_INT_MAX;
}
if (null !== $expiry && $expiry <= microtime(true)) {
$this->deleteItem($key);
return true;
}
if ($this->storeSerialized && null === $value = $this->freeze($value, $key)) {
return false;
}
if (null === $expiry && 0 < $this->defaultLifetime) {
$expiry = microtime(true) + $this->defaultLifetime;
}
$this->values[$key] = $value;
$this->expiries[$key] = $expiry ?? \PHP_INT_MAX;
return true;
}
/**
* {@inheritdoc}
*
* @return bool
*/
public function saveDeferred(CacheItemInterface $item)
{
return $this->save($item);
}
/**
* {@inheritdoc}
*
* @return bool
*/
public function commit()
{
return true;
}
/**
* {@inheritdoc}
*/
public function delete(string $key): bool
{
return $this->deleteItem($key);
}
}