Subversion-Projekte lars-tiefland.laravel_shop

<?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\Component\Console\Command;

use Symfony\Component\Console\Exception\LogicException;

use Symfony\Component\Lock\LockFactory;

use Symfony\Component\Lock\LockInterface;

use Symfony\Component\Lock\Store\FlockStore;

use Symfony\Component\Lock\Store\SemaphoreStore;

/**

 * Basic lock feature for commands.

 *

 * @author Geoffrey Brier <geoffrey.brier@gmail.com>

 */

trait LockableTrait

{

    private ?LockInterface $lock = null;

    /**

     * Locks a command.

     */

    private function lock(string $name = null, bool $blocking = false): bool

    {

        if (!class_exists(SemaphoreStore::class)) {

            throw new LogicException('To enable the locking feature you must install the symfony/lock component.');

        }

        if (null !== $this->lock) {

            throw new LogicException('A lock is already in place.');

        }

        if (SemaphoreStore::isSupported()) {

            $store = new SemaphoreStore();

        } else {

            $store = new FlockStore();

        }

        $this->lock = (new LockFactory($store))->createLock($name ?: $this->getName());

        if (!$this->lock->acquire($blocking)) {

            $this->lock = null;

            return false;

        }

        return true;

    }

    /**

     * Releases the command lock if there is one.

     */

    private function release()

    {

        if ($this->lock) {

            $this->lock->release();

            $this->lock = null;

        }

    }

}