public function indexAction()
    {
        if (!$this->canQueueSelectedSite()) {
            $this->view->assign('can_not_proceed', true);
            return;
        }

        $statistics = $this->indexQueue->getStatisticsBySite($this->selectedSite);
        $this->view->assign('indexQueueInitializationSelector', $this->getIndexQueueInitializationSelector());
        $this->view->assign('indexqueue_statistics', $statistics);
        $this->view->assign('indexqueue_errors', $this->indexQueue->getErrorsBySite($this->selectedSite));
    }