/**
* Acknowledge all deferred messages
*
* This will be called every time the block size (see prefetch_count) or timeout is reached
*
* @return void
*/
protected function ack()
{
$this->queue->ack($this->lastDeliveryTag, Constants::AMQP_MULTIPLE);
$this->lastDeliveryTag = null;
$delta = $this->timestampLastMessage - $this->timestampLastAck;
$this->logger->info(sprintf('Acknowledged %d messages at %.0f msg/s', $this->countMessagesUnacked, $delta ? $this->countMessagesUnacked / $delta : 0));
$this->timestampLastAck = microtime(true);
$this->countMessagesUnacked = 0;
}
