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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\Component\Messenger\Command;

use Psr\Cache\CacheItemPoolInterface;
use Symfony\Component\Console\Attribute\AsCommand;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
use Symfony\Component\Messenger\EventListener\StopWorkerOnRestartSignalListener;

/**
 * @author Ryan Weaver <ryan@symfonycasts.com>
 */
#[AsCommand(name: 'messenger:stop-workers', description: 'Stop workers after their current message')]
class StopWorkersCommand extends Command
{
    private CacheItemPoolInterface $restartSignalCachePool;

    public function __construct(CacheItemPoolInterface $restartSignalCachePool)
    {
        $this->restartSignalCachePool = $restartSignalCachePool;

        parent::__construct();
    }

    protected function configure(): void
    {
        $this
            ->setDefinition([])
            ->setHelp(<<<'EOF'
The <info>%command.name%</info> command sends a signal to stop any <info>messenger:consume</info> processes that are running.

    <info>php %command.full_name%</info>

Each worker command will finish the message they are currently processing
and then exit. Worker commands are *not* automatically restarted: that
should be handled by a process control system.
EOF
            )
        ;
    }

    protected function execute(InputInterface $input, OutputInterface $output): int
    {
        $io = new SymfonyStyle($input, $output instanceof ConsoleOutputInterface ? $output->getErrorOutput() : $output);

        $cacheItem = $this->restartSignalCachePool->getItem(StopWorkerOnRestartSignalListener::RESTART_REQUESTED_TIMESTAMP_KEY);
        $cacheItem->set(microtime(true));
        $this->restartSignalCachePool->save($cacheItem);

        $io->success('Signal successfully sent to stop any running workers.');

        return 0;
    }
}