/**
* Get an approximate measure of the amount of data still to be consumed
*
* @return integer
*/
public function getRemainingSize()
{
try {
if (0 == $this->nIterators) {
$this->rewind();
// initialise simple consumers
}
} catch (Exception\InvalidTopic $e) {
$logMsg = 'Invalid topic from ZookeeperConsumer::rewind(): Most likely cause is no topic yet as there is no data';
error_log($logMsg);
}
$totalSize = 0;
foreach ($this->iterators as $it) {
$readBytes = $it->offset + $it->uncommittedOffset;
if (null !== $it->messages) {
$readBytes += $it->messages->validBytes();
}
$consumer = new SimpleConsumer($it->host, $it->port, $this->socketTimeout, $this->maxBatchSize);
$offsets = $consumer->getOffsetsBefore($this->topic, $it->partition, SimpleConsumer::OFFSET_LAST, 1);
if (count($offsets) > 0) {
$remaining = $offsets[0] - $readBytes;
// remaining bytes for this broker/partition
if ($remaining > 0) {
$totalSize += $remaining;
}
}
$consumer->close();
}
return $totalSize;
}
