Cache generated urls for routes

lib/private/route/cachingrouter.php

+<?php
+/**
+ * Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Route;
+
+class CachingRouter extends Router {
+	/**
+	 * @var \OCP\ICache
+	 */
+	protected $cache;
+
+	/**
+	 * @param \OCP\ICache $cache
+	 */
+	public function __construct($cache) {
+		$this->cache = $cache;
+		parent::__construct();
+	}
+
+	/**
+	 * Generate url based on $name and $parameters
+	 *
+	 * @param string $name Name of the route to use.
+	 * @param array $parameters Parameters for the route
+	 * @param bool $absolute
+	 * @return string
+	 */
+	public function generate($name, $parameters = array(), $absolute = false) {
+		$key = $name . json_encode($parameters) . $absolute;
+		if ($this->cache->hasKey($key)) {
+			return $this->cache->get($key);
+		} else {
+			$url = parent::generate($name, $parameters, $absolute);
+			$this->cache->set($key, $url, 3600);
+			return $url;
+		}
+	}
+}