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- <?php
- namespace Drupal\Core\PageCache;
- use Symfony\Component\HttpFoundation\Request;
- use Symfony\Component\HttpFoundation\Response;
- /**
- * Defines the interface for response policy implementations.
- *
- * The response policy is evaluated in order to determine whether a page should
- * be stored a in the cache. Calling code should do so unless static::DENY is
- * returned from the check() method.
- */
- interface ResponsePolicyInterface {
- /**
- * Deny storage of a page in the cache.
- */
- const DENY = 'deny';
- /**
- * Determines whether it is save to store a page in the cache.
- *
- * @param \Symfony\Component\HttpFoundation\Response $response
- * The response which is about to be sent to the client.
- * @param \Symfony\Component\HttpFoundation\Request $request
- * The request object.
- *
- * @return string|null
- * Either static::DENY or NULL. Calling code may attempt to store a page in
- * the cache unless static::DENY is returned. Returns NULL if the policy
- * policy is not specified for the given response.
- */
- public function check(Response $response, Request $request);
- }
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