feat: add CachedQRCodeProvider

src/Service/CachedQRCodeGenerator.php

@@ -0,0 +1,39 @@
+<?php
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\Entity\QRCode\QRCode;
+use Exception;
+use Psr\Cache\InvalidArgumentException;
+use Psr\Log\LoggerInterface;
+use Symfony\Contracts\Cache\CacheInterface;
+use Symfony\Contracts\Cache\ItemInterface;
+
+
+final readonly class CachedQRCodeGenerator implements QRCodeGeneratorInterface
+{
+    private \DateInterval $cacheDuration;
+
+    /**
+     * @throws Exception
+     */
+    public function __construct(private CacheableQRCodeGeneratorInterface $innerGenerator, private CacheInterface $cache, private LoggerInterface $logger, string $cacheDuration)
+    {
+        $this->cacheDuration = new \DateInterval($cacheDuration);
+    }
+
+    public function generateQRCodeFromEntity(QRCode $entity): string
+    {
+        $key = $this->innerGenerator->getCacheKey($entity);
+        return $this->cache->get($key, function(ItemInterface $c) use ($entity) {
+            $this->logger->debug("cache miss for key " . $c->getKey(), [
+                'entity' => $entity,
+            ]);
+
+            $c->expiresAfter($this->cacheDuration);
+
+            return $this->innerGenerator->generateQRCodeFromEntity($entity);
+        });
+    }
+}