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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\Command;
use Symfony\Component\Console\Exception\RuntimeException;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
use Symfony\Component\EventDispatcher\EventDispatcher;
use Symfony\Component\Filesystem\Exception\IOException;
use Symfony\Component\Filesystem\Filesystem;
use Symfony\Component\Finder\Finder;
use Symfony\Component\HttpKernel\CacheClearer\CacheClearerInterface;
use Symfony\Component\HttpKernel\KernelInterface;
use Symfony\Component\HttpKernel\RebootableInterface;
/**
* Clear and Warmup the cache.
*
* @author Francis Besset <francis.besset@gmail.com>
* @author Fabien Potencier <fabien@symfony.com>
*
* @final since version 3.4
*/
class CacheClearCommand extends ContainerAwareCommand
{
protected static $defaultName = 'cache:clear';
private $cacheClearer;
private $filesystem;
private $warning;
/**
* @param CacheClearerInterface $cacheClearer
*/
public function __construct($cacheClearer = null, Filesystem $filesystem = null)
{
if (!$cacheClearer instanceof CacheClearerInterface) {
@trigger_error(sprintf('%s() expects an instance of "%s" as first argument since Symfony 3.4. Not passing it is deprecated and will throw a TypeError in 4.0.', __METHOD__, CacheClearerInterface::class), \E_USER_DEPRECATED);
parent::__construct($cacheClearer);
return;
}
parent::__construct();
$this->cacheClearer = $cacheClearer;
$this->filesystem = $filesystem ?: new Filesystem();
}
/**
* {@inheritdoc}
*/
protected function configure()
{
$this
->setDefinition([
new InputOption('no-warmup', '', InputOption::VALUE_NONE, 'Do not warm up the cache'),
new InputOption('no-optional-warmers', '', InputOption::VALUE_NONE, 'Skip optional cache warmers (faster)'),
])
->setDescription('Clears the cache')
->setHelp(<<<'EOF'
The <info>%command.name%</info> command clears the application cache for a given environment
and debug mode:
<info>php %command.full_name% --env=dev</info>
<info>php %command.full_name% --env=prod --no-debug</info>
EOF
)
;
}
/**
* {@inheritdoc}
*/
protected function execute(InputInterface $input, OutputInterface $output)
{
// BC to be removed in 4.0
if (null === $this->cacheClearer) {
$this->cacheClearer = $this->getContainer()->get('cache_clearer');
$this->filesystem = $this->getContainer()->get('filesystem');
$realCacheDir = $this->getContainer()->getParameter('kernel.cache_dir');
}
$fs = $this->filesystem;
$io = new SymfonyStyle($input, $output);
$kernel = $this->getApplication()->getKernel();
$realCacheDir = isset($realCacheDir) ? $realCacheDir : $kernel->getContainer()->getParameter('kernel.cache_dir');
// the old cache dir name must not be longer than the real one to avoid exceeding
// the maximum length of a directory or file path within it (esp. Windows MAX_PATH)
$oldCacheDir = substr($realCacheDir, 0, -1).('~' === substr($realCacheDir, -1) ? '+' : '~');
$fs->remove($oldCacheDir);
if (!is_writable($realCacheDir)) {
throw new RuntimeException(sprintf('Unable to write in the "%s" directory.', $realCacheDir));
}
$io->comment(sprintf('Clearing the cache for the <info>%s</info> environment with debug <info>%s</info>', $kernel->getEnvironment(), var_export($kernel->isDebug(), true)));
$this->cacheClearer->clear($realCacheDir);
// The current event dispatcher is stale, let's not use it anymore
$this->getApplication()->setDispatcher(new EventDispatcher());
$containerDir = new \ReflectionObject($kernel->getContainer());
$containerDir = basename(\dirname($containerDir->getFileName()));
// the warmup cache dir name must have the same length as the real one
// to avoid the many problems in serialized resources files
$warmupDir = substr($realCacheDir, 0, -1).('_' === substr($realCacheDir, -1) ? '-' : '_');
if ($output->isVerbose() && $fs->exists($warmupDir)) {
$io->comment('Clearing outdated warmup directory...');
}
$fs->remove($warmupDir);
$fs->mkdir($warmupDir);
if (!$input->getOption('no-warmup')) {
if ($output->isVerbose()) {
$io->comment('Warming up cache...');
}
$this->warmup($warmupDir, $realCacheDir, !$input->getOption('no-optional-warmers'));
if ($this->warning) {
@trigger_error($this->warning, \E_USER_DEPRECATED);
$io->warning($this->warning);
$this->warning = null;
}
}
if (!$fs->exists($warmupDir.'/'.$containerDir)) {
$fs->rename($realCacheDir.'/'.$containerDir, $warmupDir.'/'.$containerDir);
touch($warmupDir.'/'.$containerDir.'.legacy');
}
if ('/' === \DIRECTORY_SEPARATOR && $mounts = @file('/proc/mounts')) {
foreach ($mounts as $mount) {
$mount = \array_slice(explode(' ', $mount), 1, -3);
if (!\in_array(array_pop($mount), ['vboxsf', 'nfs'])) {
continue;
}
$mount = implode(' ', $mount).'/';
if (0 === strpos($realCacheDir, $mount)) {
$io->note('For better performances, you should move the cache and log directories to a non-shared folder of the VM.');
$oldCacheDir = false;
break;
}
}
}
if ($oldCacheDir) {
$fs->rename($realCacheDir, $oldCacheDir);
} else {
$fs->remove($realCacheDir);
}
$fs->rename($warmupDir, $realCacheDir);
if ($output->isVerbose()) {
$io->comment('Removing old cache directory...');
}
try {
$fs->remove($oldCacheDir);
} catch (IOException $e) {
if ($output->isVerbose()) {
$io->warning($e->getMessage());
}
}
if ($output->isVerbose()) {
$io->comment('Finished');
}
$io->success(sprintf('Cache for the "%s" environment (debug=%s) was successfully cleared.', $kernel->getEnvironment(), var_export($kernel->isDebug(), true)));
}
/**
* @param string $warmupDir
* @param string $realCacheDir
* @param bool $enableOptionalWarmers
*/
protected function warmup($warmupDir, $realCacheDir, $enableOptionalWarmers = true)
{
// create a temporary kernel
$realKernel = $this->getApplication()->getKernel();
if ($realKernel instanceof RebootableInterface) {
$realKernel->reboot($warmupDir);
$tempKernel = $realKernel;
} else {
$this->warning = 'Calling "cache:clear" with a kernel that does not implement "Symfony\Component\HttpKernel\RebootableInterface" is deprecated since Symfony 3.4 and will be unsupported in 4.0.';
$realKernelClass = \get_class($realKernel);
$namespace = '';
if (false !== $pos = strrpos($realKernelClass, '\\')) {
$namespace = substr($realKernelClass, 0, $pos);
$realKernelClass = substr($realKernelClass, $pos + 1);
}
$tempKernel = $this->getTempKernel($realKernel, $namespace, $realKernelClass, $warmupDir);
$tempKernel->boot();
$tempKernelReflection = new \ReflectionObject($tempKernel);
$tempKernelFile = $tempKernelReflection->getFileName();
}
// warmup temporary dir
$warmer = $tempKernel->getContainer()->get('cache_warmer');
if ($enableOptionalWarmers) {
$warmer->enableOptionalWarmers();
}
$warmer->warmUp($warmupDir);
// fix references to cached files with the real cache directory name
$search = [$warmupDir, str_replace('\\', '\\\\', $warmupDir)];
$replace = str_replace('\\', '/', $realCacheDir);
foreach (Finder::create()->files()->in($warmupDir) as $file) {
$content = str_replace($search, $replace, file_get_contents($file), $count);
if ($count) {
file_put_contents($file, $content);
}
}
if ($realKernel instanceof RebootableInterface) {
return;
}
// fix references to the Kernel in .meta files
$safeTempKernel = str_replace('\\', '\\\\', \get_class($tempKernel));
$realKernelFQN = \get_class($realKernel);
foreach (Finder::create()->files()->depth('<3')->name('*.meta')->in($warmupDir) as $file) {
file_put_contents($file, preg_replace(
'/(C\:\d+\:)"'.$safeTempKernel.'"/',
sprintf('$1"%s"', $realKernelFQN),
file_get_contents($file)
));
}
// fix references to container's class
$tempContainerClass = $tempKernel->getContainerClass();
$realContainerClass = $tempKernel->getRealContainerClass();
foreach (Finder::create()->files()->depth('<2')->name($tempContainerClass.'*')->in($warmupDir) as $file) {
$content = str_replace($tempContainerClass, $realContainerClass, file_get_contents($file));
file_put_contents($file, $content);
rename($file, str_replace(\DIRECTORY_SEPARATOR.$tempContainerClass, \DIRECTORY_SEPARATOR.$realContainerClass, $file));
}
if (is_dir($tempContainerDir = $warmupDir.'/'.\get_class($tempKernel->getContainer()))) {
foreach (Finder::create()->files()->in($tempContainerDir) as $file) {
$content = str_replace($tempContainerClass, $realContainerClass, file_get_contents($file));
file_put_contents($file, $content);
}
}
// remove temp kernel file after cache warmed up
@unlink($tempKernelFile);
}
/**
* @param string $namespace
* @param string $parentClass
* @param string $warmupDir
*
* @return KernelInterface
*/
protected function getTempKernel(KernelInterface $parent, $namespace, $parentClass, $warmupDir)
{
$projectDir = '';
$cacheDir = var_export($warmupDir, true);
$rootDir = var_export(realpath($parent->getRootDir()), true);
$logDir = var_export(realpath($parent->getLogDir()), true);
// the temp kernel class name must have the same length than the real one
// to avoid the many problems in serialized resources files
$class = substr($parentClass, 0, -1).'_';
// the temp container class must be changed too
$container = $parent->getContainer();
$realContainerClass = var_export($container->hasParameter('kernel.container_class') ? $container->getParameter('kernel.container_class') : \get_class($parent->getContainer()), true);
$containerClass = substr_replace($realContainerClass, '_', -2, 1);
if (method_exists($parent, 'getProjectDir')) {
$projectDir = var_export(realpath($parent->getProjectDir()), true);
$projectDir = <<<EOF
public function getProjectDir()
{
return $projectDir;
}
EOF;
}
$code = <<<EOF
<?php
namespace $namespace
{
class $class extends $parentClass
{
public function getCacheDir()
{
return $cacheDir;
}
public function getRootDir()
{
return $rootDir;
}
$projectDir
public function getLogDir()
{
return $logDir;
}
public function getRealContainerClass()
{
return $realContainerClass;
}
public function getContainerClass()
{
return $containerClass;
}
protected function buildContainer()
{
\$container = parent::buildContainer();
// filter container's resources, removing reference to temp kernel file
\$resources = \$container->getResources();
\$filteredResources = [];
foreach (\$resources as \$resource) {
if ((string) \$resource !== __FILE__) {
\$filteredResources[] = \$resource;
}
}
\$container->setResources(\$filteredResources);
return \$container;
}
}
}
EOF;
$this->filesystem->mkdir($warmupDir);
file_put_contents($file = $warmupDir.'/kernel.tmp', $code);
require_once $file;
$class = "$namespace\\$class";
return new $class($parent->getEnvironment(), $parent->isDebug());
}
}