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vendor/symfony/serializer/Mapping/Factory/CacheClassMetadataFactory.php

@@ -0,0 +1,68 @@
+<?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\Serializer\Mapping\Factory;
+
+use Psr\Cache\CacheItemPoolInterface;
+
+/**
+ * Caches metadata using a PSR-6 implementation.
+ *
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+class CacheClassMetadataFactory implements ClassMetadataFactoryInterface
+{
+    use ClassResolverTrait;
+
+    /**
+     * @var ClassMetadataFactoryInterface
+     */
+    private $decorated;
+
+    /**
+     * @var CacheItemPoolInterface
+     */
+    private $cacheItemPool;
+
+    public function __construct(ClassMetadataFactoryInterface $decorated, CacheItemPoolInterface $cacheItemPool)
+    {
+        $this->decorated = $decorated;
+        $this->cacheItemPool = $cacheItemPool;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getMetadataFor($value)
+    {
+        $class = $this->getClass($value);
+        // Key cannot contain backslashes according to PSR-6
+        $key = strtr($class, '\\', '_');
+
+        $item = $this->cacheItemPool->getItem($key);
+        if ($item->isHit()) {
+            return $item->get();
+        }
+
+        $metadata = $this->decorated->getMetadataFor($value);
+        $this->cacheItemPool->save($item->set($metadata));
+
+        return $metadata;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function hasMetadataFor($value)
+    {
+        return $this->decorated->hasMetadataFor($value);
+    }
+}