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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* 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\Command\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\DependencyInjection\Dumper\Preloader;
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\RebootableInterface;
/**
* Clear and Warmup the cache.
*
* @author Francis Besset <[email protected]>
* @author Fabien Potencier <[email protected]>
*
* @final
*/
class CacheClearCommand extends Command
{
protected static $defaultName = 'cache:clear';
protected static $defaultDescription = 'Clear the cache';
private $cacheClearer;
private $filesystem;
public function __construct(CacheClearerInterface $cacheClearer, ?Filesystem $filesystem = null)
{
parent::__construct();
$this->cacheClearer = $cacheClearer;
$this->filesystem = $filesystem ?? new Filesystem();
}
/**
* {@inheritdoc}
*/
protected function configure()
{
$this
->setDefinition([
new InputOption('no-warmup', '', InputOption::VALUE_NONE, 'Do not warm up the cache'),
new InputOption('no-optional-warmers', '', InputOption::VALUE_NONE, 'Skip optional cache warmers (faster)'),
])
->setDescription(self::$defaultDescription)
->setHelp(<<<'EOF'
The <info>%command.name%</info> command clears and warms up 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): int
{
$fs = $this->filesystem;
$io = new SymfonyStyle($input, $output);
$kernel = $this->getApplication()->getKernel();
$realCacheDir = $kernel->getContainer()->getParameter('kernel.cache_dir');
$realBuildDir = $kernel->getContainer()->hasParameter('kernel.build_dir') ? $kernel->getContainer()->getParameter('kernel.build_dir') : $realCacheDir;
// 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).(str_ends_with($realCacheDir, '~') ? '+' : '~');
$fs->remove($oldCacheDir);
if (!is_writable($realCacheDir)) {
throw new RuntimeException(sprintf('Unable to write in the "%s" directory.', $realCacheDir));
}
$useBuildDir = $realBuildDir !== $realCacheDir;
$oldBuildDir = substr($realBuildDir, 0, -1).('~' === substr($realBuildDir, -1) ? '+' : '~');
if ($useBuildDir) {
$fs->remove($oldBuildDir);
if (!is_writable($realBuildDir)) {
throw new RuntimeException(sprintf('Unable to write in the "%s" directory.', $realBuildDir));
}
if ($this->isNfs($realCacheDir)) {
$fs->remove($realCacheDir);
} else {
$fs->rename($realCacheDir, $oldCacheDir);
}
$fs->mkdir($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)));
if ($useBuildDir) {
$this->cacheClearer->clear($realBuildDir);
}
$this->cacheClearer->clear($realCacheDir);
// The current event dispatcher is stale, let's not use it anymore
$this->getApplication()->setDispatcher(new EventDispatcher());
$containerFile = (new \ReflectionObject($kernel->getContainer()))->getFileName();
$containerDir = basename(\dirname($containerFile));
// the warmup cache dir name must have the same length as the real one
// to avoid the many problems in serialized resources files
$warmupDir = substr($realBuildDir, 0, -1).('_' === substr($realBuildDir, -1) ? '-' : '_');
if ($output->isVerbose() && $fs->exists($warmupDir)) {
$io->comment('Clearing outdated warmup directory...');
}
$fs->remove($warmupDir);
if ($_SERVER['REQUEST_TIME'] <= filemtime($containerFile) && filemtime($containerFile) <= time()) {
if ($output->isVerbose()) {
$io->comment('Cache is fresh.');
}
if (!$input->getOption('no-warmup') && !$input->getOption('no-optional-warmers')) {
if ($output->isVerbose()) {
$io->comment('Warming up optional cache...');
}
$this->warmupOptionals($realCacheDir, $realBuildDir);
}
} else {
$fs->mkdir($warmupDir);
if (!$input->getOption('no-warmup')) {
if ($output->isVerbose()) {
$io->comment('Warming up cache...');
}
$this->warmup($warmupDir, $realBuildDir);
if (!$input->getOption('no-optional-warmers')) {
if ($output->isVerbose()) {
$io->comment('Warming up optional cache...');
}
$this->warmupOptionals($useBuildDir ? $realCacheDir : $warmupDir, $warmupDir);
}
}
if (!$fs->exists($warmupDir.'/'.$containerDir)) {
$fs->rename($realBuildDir.'/'.$containerDir, $warmupDir.'/'.$containerDir);
touch($warmupDir.'/'.$containerDir.'.legacy');
}
if ($this->isNfs($realBuildDir)) {
$io->note('For better performances, you should move the cache and log directories to a non-shared folder of the VM.');
$fs->remove($realBuildDir);
} else {
$fs->rename($realBuildDir, $oldBuildDir);
}
$fs->rename($warmupDir, $realBuildDir);
if ($output->isVerbose()) {
$io->comment('Removing old build and cache directory...');
}
if ($useBuildDir) {
try {
$fs->remove($oldBuildDir);
} catch (IOException $e) {
if ($output->isVerbose()) {
$io->warning($e->getMessage());
}
}
}
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)));
return 0;
}
private function isNfs(string $dir): bool
{
static $mounts = null;
if (null === $mounts) {
$mounts = [];
if ('/' === \DIRECTORY_SEPARATOR && $files = @file('/proc/mounts')) {
foreach ($files as $mount) {
$mount = \array_slice(explode(' ', $mount), 1, -3);
if (!\in_array(array_pop($mount), ['vboxsf', 'nfs'])) {
continue;
}
$mounts[] = implode(' ', $mount).'/';
}
}
}
foreach ($mounts as $mount) {
if (0 === strpos($dir, $mount)) {
return true;
}
}
return false;
}
private function warmup(string $warmupDir, string $realBuildDir): void
{
// create a temporary kernel
$kernel = $this->getApplication()->getKernel();
if (!$kernel instanceof RebootableInterface) {
throw new \LogicException('Calling "cache:clear" with a kernel that does not implement "Symfony\Component\HttpKernel\RebootableInterface" is not supported.');
}
$kernel->reboot($warmupDir);
// fix references to cached files with the real cache directory name
$search = [$warmupDir, str_replace('\\', '\\\\', $warmupDir)];
$replace = str_replace('\\', '/', $realBuildDir);
foreach (Finder::create()->files()->in($warmupDir) as $file) {
$content = str_replace($search, $replace, file_get_contents($file), $count);
if ($count) {
file_put_contents($file, $content);
}
}
}
private function warmupOptionals(string $cacheDir, string $warmupDir): void
{
$kernel = $this->getApplication()->getKernel();
$warmer = $kernel->getContainer()->get('cache_warmer');
// non optional warmers already ran during container compilation
$warmer->enableOnlyOptionalWarmers();
$preload = (array) $warmer->warmUp($cacheDir);
if ($preload && file_exists($preloadFile = $warmupDir.'/'.$kernel->getContainer()->getParameter('kernel.container_class').'.preload.php')) {
Preloader::append($preloadFile, $preload);
}
}
}