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<?php |
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/** |
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* AnimeDb package. |
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* |
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* @author Peter Gribanov <[email protected]> |
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* @copyright Copyright (c) 2014, Peter Gribanov |
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* @license http://opensource.org/licenses/MIT |
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*/ |
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namespace AnimeDb\Bundle\CacheTimeKeeperBundle\Service; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\RequestStack; |
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use Symfony\Component\HttpFoundation\Response; |
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class ResponseConfigurator |
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{ |
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/** |
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* @var CacheKeyBuilder |
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*/ |
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protected $key_builder; |
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/** |
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* @var RequestStack |
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*/ |
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protected $request_stack; |
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/** |
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* @var array |
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*/ |
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protected $private_headers = []; |
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/** |
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* @param CacheKeyBuilder $key_builder |
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* @param RequestStack $request_stack |
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* @param array $private_headers |
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*/ |
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public function __construct(CacheKeyBuilder $key_builder, RequestStack $request_stack, array $private_headers) |
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{ |
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$this->key_builder = $key_builder; |
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$this->request_stack = $request_stack; |
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$this->private_headers = $private_headers; |
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} |
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/** |
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* Configure response |
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* |
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* Set $lifetime as < 0 for not set max-age |
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* |
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* @param Response $response |
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* @param \DateTime $last_modified |
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* @param int $lifetime |
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* |
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* @return Response |
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*/ |
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public function configure(Response $response, \DateTime $last_modified, $lifetime) |
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{ |
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$request = $this->request_stack->getMasterRequest(); |
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if (!($request instanceof Request)) { |
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return $response; |
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} |
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// order is important |
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$this |
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->setPrivateCache($response, $request) |
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->setLastModified($response, $last_modified) |
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->setLifetime($response, $lifetime) |
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->setEtag($response, $request); |
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return $response; |
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} |
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/** |
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* @param Response $response |
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* @param Request $request |
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* |
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* @return ResponseConfigurator |
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*/ |
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protected function setPrivateCache(Response $response, Request $request) |
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{ |
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if (!$response->headers->hasCacheControlDirective('private')) { |
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3 |
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$response->setPublic(); |
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foreach ($this->private_headers as $private_header) { |
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if ($request->headers->has($private_header)) { |
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$response->setPrivate(); |
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break; |
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} |
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} |
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} |
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return $this; |
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} |
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/** |
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* @param Response $response |
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* @param \DateTime $last_modified |
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* |
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* @return ResponseConfigurator |
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*/ |
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protected function setLastModified(Response $response, \DateTime $last_modified) |
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{ |
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$response |
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->setLastModified($last_modified) |
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->setDate($last_modified) |
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->headers |
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->addCacheControlDirective('must-revalidate', true); |
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return $this; |
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} |
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/** |
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* Set max-age, s-maxage and expires headers |
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* |
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* Set $lifetime as < 0 for not set max-age |
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* Need set Cache-Control public/private before set lifetime |
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* |
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* @param Response $response |
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* @param int $lifetime |
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* |
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* @return ResponseConfigurator |
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*/ |
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protected function setLifetime(Response $response, $lifetime) |
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{ |
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if ($lifetime >= 0) { |
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$date = clone $response->getDate(); |
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$response |
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->setMaxAge($lifetime) |
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->setExpires($date->modify(sprintf('now +%s seconds', $lifetime))); |
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if (!$response->headers->hasCacheControlDirective('private')) { |
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$response->setSharedMaxAge($lifetime); |
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1 |
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} |
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} |
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return $this; |
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} |
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/** |
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* Set ETag |
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* |
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* Need set Last-Modified before ETag |
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* |
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* @param Response $response |
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* @param Request $request |
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* |
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* @return ResponseConfigurator |
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*/ |
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4 |
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protected function setEtag(Response $response, Request $request) |
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{ |
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if (!$response->getEtag()) { |
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$response->setEtag($this->key_builder->getEtag($request, $response)); |
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} |
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return $this; |
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} |
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} |
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anime-db /
cache-time-keeper-bundle
