/**
* Clean visitor's outdated records
*
* @param \Magento\Customer\Model\Visitor $object
* @return $this
*/
public function clean(\Magento\Customer\Model\Visitor $object)
{
$cleanTime = $object->getCleanTime();
$connection = $this->getConnection();
$timeLimit = $this->dateTime->formatDate($this->date->gmtTimestamp() - $cleanTime);
while (true) {
$select = $connection->select()->from(['visitor_table' => $this->getTable('customer_visitor')], ['visitor_id' => 'visitor_table.visitor_id'])->where('visitor_table.last_visit_at < ?', $timeLimit)->limit(100);
$visitorIds = $connection->fetchCol($select);
if (!$visitorIds) {
break;
}
$condition = ['visitor_id IN (?)' => $visitorIds];
$connection->delete($this->getTable('customer_visitor'), $condition);
}
return $this;
}