symfony/src/Symfony/Bundle/FrameworkBundle/Command/CacheWarmupCommand.php

<?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\Command;

use Symfony\Component\ClassLoader\ClassCollectionLoader;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;

/**
 * Warmup the cache.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class CacheWarmupCommand extends ContainerAwareCommand
{
    /**
     * @see Command
     */
    protected function configure()
    {
        $this
            ->setName('cache:warmup')
            ->setDefinition(array(
                new InputOption('no-optional-warmers', '', InputOption::VALUE_NONE, 'Skip optional cache warmers (faster)'),
            ))
            ->setDescription('Warms up an empty cache')
            ->setHelp(<<<EOF
The <info>%command.name%</info> command warms up the cache.

Before running this command, the cache must be empty.
EOF
            )
        ;
    }

    /**
     * {@inheritdoc}
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $kernel = $this->getContainer()->get('kernel');
        $output->writeln(sprintf('Warming up the cache for the <info>%s</info> environment with debug <info>%s</info>', $kernel->getEnvironment(), var_export($kernel->isDebug(), true)));

        $warmer = $this->getContainer()->get('cache_warmer');

        if (!$input->getOption('no-optional-warmers')) {
            $warmer->enableOptionalWarmers();
        }

        $cacheDir = $this->getContainer()->getParameter('kernel.cache_dir');
        $warmer->warmUp($cacheDir);

        $classmap = $cacheDir.'/classes.map';
        if (is_file($classmap)) {
            ClassCollectionLoader::load(include($classmap), $cacheDir, 'classes', $kernel->isDebug(), false, '.php');
        }
    }
}