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<?php |
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namespace ScayTrase\Api\Rpc\Decorators; |
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use Psr\Cache\CacheItemPoolInterface; |
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use ScayTrase\Api\Rpc\RpcClientInterface; |
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final class CacheableRpcClient implements RpcClientInterface |
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{ |
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const DEFAULT_KEY_PREFIX = 'rpc_client_cache'; |
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/** @var CacheItemPoolInterface */ |
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private $cache; |
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/** @var RpcClientInterface */ |
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private $decoratedClient; |
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/** @var CacheKeyStrategyInterface */ |
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private $keyStrategy; |
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/** @var int|null */ |
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private $ttl; |
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/** |
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* CacheableRpcClient constructor. |
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* |
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* @param RpcClientInterface $decoratedClient |
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* @param CacheItemPoolInterface $cache |
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* @param int|null $ttl |
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* @param CacheKeyStrategyInterface|string $strategy |
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*/ |
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public function __construct( |
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RpcClientInterface $decoratedClient, |
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CacheItemPoolInterface $cache, |
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$ttl = null, |
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$strategy = self::DEFAULT_KEY_PREFIX |
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) { |
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$this->decoratedClient = $decoratedClient; |
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$this->cache = $cache; |
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$this->ttl = $ttl; |
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if (!$strategy instanceof CacheKeyStrategyInterface) { |
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$this->keyStrategy = new Sha1KeyStrategy((string)$strategy); |
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} |
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} |
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/** {@inheritdoc} */ |
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public function invoke($calls) |
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{ |
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if (!is_array($calls)) { |
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$calls = [$calls]; |
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} |
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$items = []; |
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$proxiedRequests = []; |
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foreach ($calls as $call) { |
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$key = $this->keyStrategy->getKey($call); |
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$item = $this->cache->getItem($key); |
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$items[$key]['request'] = $call; |
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$items[$key]['item'] = $item; |
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if (!$item->isHit()) { |
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$proxiedRequests[] = $call; |
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} |
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} |
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// Prevent batch calls when not necessary |
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if (count($proxiedRequests) === 1 && !is_array($calls)) { |
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$proxiedRequests = array_shift($proxiedRequests); |
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} |
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return new CacheableResponseCollection( |
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$this->cache, |
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$this->keyStrategy, |
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$items, |
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$this->decoratedClient->invoke($proxiedRequests), |
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$this->ttl |
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); |
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} |
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} |
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scaytrase /
rpc-common
