function RedisStore::getNowCode

4 calls to RedisStore::getNowCode()

RedisStore::exists in vendor/symfony/lock/Store/RedisStore.php

Returns whether or not the resource exists in the storage.

RedisStore::putOffExpiration in vendor/symfony/lock/Store/RedisStore.php

Extends the TTL of a resource.

RedisStore::save in vendor/symfony/lock/Store/RedisStore.php

Stores the resource if it's not locked by someone else.

RedisStore::saveRead in vendor/symfony/lock/Store/RedisStore.php

Stores the resource if it's not locked for reading by someone else.

File

vendor/symfony/lock/Store/RedisStore.php, line 319

Class

RedisStore

RedisStore is a PersistingStoreInterface implementation using Redis as store engine.

Namespace

Symfony\Component\Lock\Store

Code

private function getNowCode() : string {
    if (!isset($this->supportTime)) {
        // Redis < 5.0 does not support TIME (not deterministic) in script.
        // https://redis.io/commands/eval#replicating-commands-instead-of-scripts
        // This code asserts TIME can be use, otherwise will fallback to a timestamp generated by the PHP process.
        $script = '
                local now = redis.call("TIME")
                redis.call("SET", KEYS[1], "1", "PX", 1)

	            return 1
            ';
        try {
            $this->supportTime = 1 === $this->evaluate($script, 'symfony_check_support_time', []);
        } catch (LockStorageException $e) {
            if (!str_contains($e->getMessage(), 'commands not allowed after non deterministic') && !str_contains($e->getMessage(), 'is not allowed from script script')) {
                throw $e;
            }
            $this->supportTime = false;
        }
    }
    if ($this->supportTime) {
        return '
                local now = redis.call("TIME")
                now = now[1] * 1000 + math.floor(now[2] / 1000)
            ';
    }
    return '
            local now = tonumber(ARGV[1])
            now = math.floor(now * 1000)
        ';
}