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<?php |
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namespace ScayTrase\Api\Rpc\Decorators; |
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use Psr\Cache\CacheItemInterface; |
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use Psr\Cache\CacheItemPoolInterface; |
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use ScayTrase\Api\Rpc\ResponseCollectionInterface; |
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use ScayTrase\Api\Rpc\RpcRequestInterface; |
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final class CacheableResponseCollection implements \IteratorAggregate, ResponseCollectionInterface |
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{ |
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/** @var CacheItemPoolInterface */ |
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private $cache; |
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/** @var CacheKeyStrategyInterface */ |
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private $keyStrategy; |
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/** @var array */ |
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private $items; |
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/** @var ResponseCollectionInterface */ |
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private $proxiedCollection; |
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/** @var int|null */ |
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private $ttl; |
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/** |
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* CacheableResponseCollection constructor. |
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* |
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* @param CacheItemPoolInterface $cache |
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* @param CacheKeyStrategyInterface $keyStrategy |
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* @param array $items |
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* @param ResponseCollectionInterface $proxiedCollection |
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* @param int|null $ttl |
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*/ |
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public function __construct( |
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CacheItemPoolInterface $cache, |
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CacheKeyStrategyInterface $keyStrategy, |
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array $items, |
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ResponseCollectionInterface $proxiedCollection, |
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$ttl |
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) { |
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$this->cache = $cache; |
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$this->keyStrategy = $keyStrategy; |
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$this->items = $items; |
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$this->proxiedCollection = $proxiedCollection; |
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$this->ttl = $ttl ?: null; |
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} |
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/** {@inheritdoc} */ |
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public function getResponse(RpcRequestInterface $request) |
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{ |
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$key = $this->keyStrategy->getKey($request); |
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/** @var CacheItemInterface $item */ |
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$item = $this->items[$key]['item']; |
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if ($item->isHit()) { |
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return $item->get(); |
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} |
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$item->expiresAfter($this->ttl); |
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$item->set($this->proxiedCollection->getResponse($request)); |
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$this->cache->save($item); |
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return $item->get(); |
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} |
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/** {@inheritdoc} */ |
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public function getIterator() |
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{ |
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foreach ($this->items as $key => $data) { |
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/** @var CacheItemInterface $item */ |
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$item = $data['item']; |
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if ($item->isHit()) { |
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yield $item->get(); |
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} |
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yield $this->getResponse($data['request']); |
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} |
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} |
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} |
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