Dumplie\CustomerService\Domain\Order\NewOrderListener::on PHP Method

    public function on(string $eventJson)
    {
        $data = json_decode($eventJson, true);
        if (!array_key_exists('name', $data) || $data['name'] !== Events::CUSTOMER_PLACED_ORDER) {
            throw UnknownEventException::unexpected(Events::CUSTOMER_PLACED_ORDER, $data['name']);
        }
        $this->orders->add(new Order(new OrderId($data['order_id']), new \DateTimeImmutable($data['date'])));
    }