Actualización

vendor/symfony/framework-bundle/CacheWarmer/RouterCacheWarmer.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bundle\FrameworkBundle\CacheWarmer;
+
+use Symfony\Component\HttpKernel\CacheWarmer\CacheWarmerInterface;
+use Symfony\Component\HttpKernel\CacheWarmer\WarmableInterface;
+use Symfony\Component\Routing\RouterInterface;
+
+/**
+ * Generates the router matcher and generator classes.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class RouterCacheWarmer implements CacheWarmerInterface
+{
+    protected $router;
+
+    /**
+     * Constructor.
+     *
+     * @param RouterInterface $router A Router instance
+     */
+    public function __construct(RouterInterface $router)
+    {
+        $this->router = $router;
+    }
+
+    /**
+     * Warms up the cache.
+     *
+     * @param string $cacheDir The cache directory
+     */
+    public function warmUp($cacheDir)
+    {
+        if ($this->router instanceof WarmableInterface) {
+            $this->router->warmUp($cacheDir);
+        }
+    }
+
+    /**
+     * Checks whether this warmer is optional or not.
+     *
+     * @return bool always true
+     */
+    public function isOptional()
+    {
+        return true;
+    }
+}