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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\Traits;
use Symfony\Component\Cache\CacheItem;
use Symfony\Component\Cache\Exception\CacheException;
/**
* @author Nicolas Grekas <p@tchwork.com>
*
* @internal
*/
trait ApcuTrait
{
public static function isSupported()
{
return \function_exists('apcu_fetch') && filter_var(\ini_get('apc.enabled'), \FILTER_VALIDATE_BOOLEAN);
}
private function init(string $namespace, int $defaultLifetime, ?string $version)
{
if (!static::isSupported()) {
throw new CacheException('APCu is not enabled.');
}
if ('cli' === \PHP_SAPI) {
ini_set('apc.use_request_time', 0);
}
parent::__construct($namespace, $defaultLifetime);
if (null !== $version) {
CacheItem::validateKey($version);
if (!apcu_exists($version.'@'.$namespace)) {
$this->doClear($namespace);
apcu_add($version.'@'.$namespace, null);
}
}
}
/**
* {@inheritdoc}
*/
protected function doFetch(array $ids)
{
$unserializeCallbackHandler = ini_set('unserialize_callback_func', __CLASS__.'::handleUnserializeCallback');
try {
$values = [];
$ids = array_flip($ids);
foreach (apcu_fetch(array_keys($ids), $ok) ?: [] as $k => $v) {
if (!isset($ids[$k])) {
// work around https://github.com/krakjoe/apcu/issues/247
$k = key($ids);
}
unset($ids[$k]);
if (null !== $v || $ok) {
$values[$k] = $v;
}
}
return $values;
} catch (\Error $e) {
throw new \ErrorException($e->getMessage(), $e->getCode(), \E_ERROR, $e->getFile(), $e->getLine());
} finally {
ini_set('unserialize_callback_func', $unserializeCallbackHandler);
}
}
/**
* {@inheritdoc}
*/
protected function doHave($id)
{
return apcu_exists($id);
}
/**
* {@inheritdoc}
*/
protected function doClear($namespace)
{
return isset($namespace[0]) && class_exists(\APCUIterator::class, false) && ('cli' !== \PHP_SAPI || filter_var(\ini_get('apc.enable_cli'), \FILTER_VALIDATE_BOOLEAN))
? apcu_delete(new \APCUIterator(sprintf('/^%s/', preg_quote($namespace, '/')), \APC_ITER_KEY))
: apcu_clear_cache();
}
/**
* {@inheritdoc}
*/
protected function doDelete(array $ids)
{
foreach ($ids as $id) {
apcu_delete($id);
}
return true;
}
/**
* {@inheritdoc}
*/
protected function doSave(array $values, int $lifetime)
{
try {
if (false === $failures = apcu_store($values, null, $lifetime)) {
$failures = $values;
}
return array_keys($failures);
} catch (\Throwable $e) {
if (1 === \count($values)) {
// Workaround https://github.com/krakjoe/apcu/issues/170
apcu_delete(array_key_first($values));
}
throw $e;
}
}
}
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