Symfony\Bundle\FrameworkBundle\Command\CacheClearCommand::warmup PHP Méthode

    protected function warmup($warmupDir)
    {
        $this->getContainer()->get('filesystem')->remove($warmupDir);

        $parent = $this->getContainer()->get('kernel');
        $class = get_class($parent);
        $namespace = '';
        if (false !== $pos = strrpos($class, '\\')) {
            $namespace = substr($class, 0, $pos);
            $class = substr($class, $pos + 1);
        }

        $kernel = $this->getTempKernel($parent, $namespace, $class, $warmupDir);
        $kernel->boot();

        $warmer = $kernel->getContainer()->get('cache_warmer');
        $warmer->enableOptionalWarmers();
        $warmer->warmUp($warmupDir);

        // fix container files and classes
        $regex = '/'.preg_quote($this->getTempKernelSuffix(), '/').'/';
        $finder = new Finder();
        foreach ($finder->files()->name(get_class($kernel->getContainer()).'*')->in($warmupDir) as $file) {
            $content = file_get_contents($file);
            $content = preg_replace($regex, '', $content);
            file_put_contents(preg_replace($regex, '', $file), $content);
            unlink($file);
        }

        // fix meta references to the Kernel
        foreach ($finder->files()->name('*.meta')->in($warmupDir) as $file) {
            $content = preg_replace(
                '/C\:\d+\:"'.preg_quote($class.$this->getTempKernelSuffix(), '"/').'"/',
                sprintf('C:%s:"%s"', strlen($class), $class),
                file_get_contents($file)
            );
            file_put_contents($file, $content);
        }
    }