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83 lines
2.2 KiB
83 lines
2.2 KiB
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* This code is partially based on the Rack-Cache library by Ryan Tomayko,
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* which is released under the MIT license.
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\HttpKernel\HttpCache;
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use Symfony\Component\HttpFoundation\Request;
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use Symfony\Component\HttpFoundation\Response;
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/**
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* Interface implemented by HTTP cache stores.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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interface StoreInterface
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{
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/**
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* Locates a cached Response for the Request provided.
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*
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* @return Response|null A Response instance, or null if no cache entry was found
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*/
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public function lookup(Request $request);
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/**
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* Writes a cache entry to the store for the given Request and Response.
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*
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* Existing entries are read and any that match the response are removed. This
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* method calls write with the new list of cache entries.
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*
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* @return string The key under which the response is stored
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*/
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public function write(Request $request, Response $response);
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/**
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* Invalidates all cache entries that match the request.
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*/
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public function invalidate(Request $request);
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/**
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* Locks the cache for a given Request.
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*
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* @return bool|string true if the lock is acquired, the path to the current lock otherwise
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*/
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public function lock(Request $request);
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/**
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* Releases the lock for the given Request.
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*
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* @return bool False if the lock file does not exist or cannot be unlocked, true otherwise
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*/
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public function unlock(Request $request);
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/**
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* Returns whether or not a lock exists.
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*
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* @return bool true if lock exists, false otherwise
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*/
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public function isLocked(Request $request);
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/**
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* Purges data for the given URL.
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*
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* @param string $url A URL
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*
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* @return bool true if the URL exists and has been purged, false otherwise
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*/
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public function purge($url);
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/**
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* Cleanups storage.
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*/
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public function cleanup();
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}
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