TYPO3 Solr task that automatically determines correct domain

<?php
namespace ***\***\Scheduler;

use TYPO3\CMS\Backend\Utility\BackendUtility;
use TYPO3\CMS\Core\Utility\GeneralUtility;

/**
 * This class provides an enhanced task for Solr that uses proper domains.
 *
 * @author Dmitry Dulepov <***@***.***>
 */
class IndexTask extends \Tx_Solr_Scheduler_IndexQueueWorkerTask {

    /**
     * Executes the task.
     *
     * @return bool
     */
    public function execute() {
        $rootPageId = $this->site->getRootPageId();

        $domainRecords = BackendUtility::getRecordsByField('sys_domain', 'pid', $rootPageId, ' AND redirectTo=\'\' AND hidden=0', '', 'sorting');
        if (is_array($domainRecords)) {
            $domainRecord = reset($domainRecords);
            $_SERVER['HTTP_HOST'] = rtrim($domainRecord['domainName'], '/');

            /* ... some code here, specific to our package structure that you do not need */
        }

        return parent::execute();
    }
}