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<?php |
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namespace Kevinrob\GuzzleCache\Strategy; |
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use Kevinrob\GuzzleCache\CacheEntry; |
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use Kevinrob\GuzzleCache\Storage\CacheStorageInterface; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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/** |
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* This strategy represent a "greedy" HTTP client. |
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* |
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* It can be used to cache responses in spite of any cache related response headers, |
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* but it SHOULDN'T be used unless absolutely necessary, e.g. when accessing |
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* badly designed APIs without Cache control. |
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* |
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* Obviously, this follows no RFC :(. |
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*/ |
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class GreedyCacheStrategy extends PrivateCacheStrategy |
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{ |
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/** |
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* @var int |
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*/ |
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protected $ttl; |
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public function __construct(CacheStorageInterface $cache = null, $ttl) |
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{ |
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$this->ttl = $ttl; |
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parent::__construct($cache); |
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} |
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protected function getCacheKey(RequestInterface $request) |
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{ |
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return sha1( |
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'greedy'.$request->getMethod().$request->getUri() |
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); |
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} |
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public function cache(RequestInterface $request, ResponseInterface $response) |
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{ |
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if ($cacheObject = $this->getCacheObject($request, $response)) { |
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return $this->storage->save( |
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$this->getCacheKey($request), |
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$cacheObject |
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); |
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} |
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return false; |
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} |
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protected function getCacheObject(RequestInterface $request, ResponseInterface $response) |
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{ |
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if (!array_key_exists($response->getStatusCode(), $this->statusAccepted)) { |
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// Don't cache it |
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return null; |
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} |
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return new CacheEntry($request, $response, new \DateTime(sprintf('+%d seconds', $this->ttl))); |
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} |
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public function fetch(RequestInterface $request) |
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{ |
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return $this->storage->fetch($this->getCacheKey($request)); |
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} |
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} |
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Kevinrob /
guzzle-cache-middleware
