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[yaffs-website] / vendor / symfony / http-kernel / HttpCache / StoreInterface.php

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