vendor/codeages/symfony-lock-lite/Store/RedisStore.php

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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\Lock\Store;

use Symfony\Component\Lock\Exception\InvalidArgumentException;
use Symfony\Component\Lock\Exception\LockConflictedException;
use Symfony\Component\Lock\Key;
use Symfony\Component\Lock\StoreInterface;

/**
 * RedisStore is a StoreInterface implementation using Redis as store engine.
 *
 * @author Jérémy Derussé <jeremy@derusse.com>
 */
class RedisStore implements StoreInterface
{
    private $redis;
    private $initialTtl;

    /**
     * @param \Redis|\RedisArray|\RedisCluster|\Predis\Client $redisClient
     * @param float                                           $initialTtl  the expiration delay of locks in seconds
     */
    public function __construct($redisClient, $initialTtl = 300.0)
    {
        if (!$redisClient instanceof \Redis && !$redisClient instanceof \RedisArray && !$redisClient instanceof \RedisCluster && !$redisClient instanceof \Predis\Client) {
            throw new InvalidArgumentException(sprintf('%s() expects parameter 1 to be Redis, RedisArray, RedisCluster or Predis\Client, %s given', __METHOD__, is_object($redisClient) ? get_class($redisClient) : gettype($redisClient)));
        }

        if ($initialTtl <= 0) {
            throw new InvalidArgumentException(sprintf('%s() expects a strictly positive TTL. Got %d.', __METHOD__, $initialTtl));
        }

        $this->redis = $redisClient;
        $this->initialTtl = $initialTtl;
    }

    /**
     * {@inheritdoc}
     */
    public function save(Key $key)
    {
        $script = '
            if redis.call("GET", KEYS[1]) == ARGV[1] then
                return redis.call("PEXPIRE", KEYS[1], ARGV[2])
            else
                return redis.call("set", KEYS[1], ARGV[1], "NX", "PX", ARGV[2])
            end
        ';

        $expire = (int) ceil($this->initialTtl * 1000);