Predis\Connection\Aggregate\SentinelReplication::getConnectionById PHP Метод

    public function getConnectionById($connectionId)
    {
        if ($connectionId === 'master') {
            return $this->getMaster();
        }
        $this->getSlaves();
        if (isset($this->slaves[$connectionId])) {
            return $this->slaves[$connectionId];
        }
    }