public function execute()
{
$registeredSegments = $this->cache()->getItemsOnList(SegmentCache::getCacheKeyForRegisterSegments());
$log = $this->logger();
if (is_array($registeredSegments) && !empty($registeredSegments)) {
foreach ($registeredSegments as $segmentName) {
$log->info(">>> Fetching data from segment: {$segmentName}");
$timeStart = Latency::startMeasuringLatency();
while (true) {
$timeStartPart = Latency::startMeasuringLatency();
if (!$this->getSplitClient()->updateSegmentChanges($segmentName)) {
$timeItTook = Latency::calculateLatency($timeStartPart);
$log->debug("Fetching segment last part ({$segmentName}) took {$timeItTook} microseconds");
$greedyTime = Latency::calculateLatency($timeStart);
$log->info("Finished fetching whole segment {$segmentName}, took {$greedyTime} microseconds");
break;
}
$timeItTook = Latency::calculateLatency($timeStartPart);
$log->debug("Fetching segment part ({$segmentName}) took {$timeItTook} microseconds");
//Sleep 1/2 second
usleep(500000);
}
}
// Setting Segments ready mark
$dateTimeUTC = new \DateTime("now", new \DateTimeZone("UTC"));
$bur = new BlockUntilReadyCache();
$bur->setReadySegments($dateTimeUTC->getTimestamp());
}
}
/**
* @param $timeout
* @return bool
*/
private function blockUntilReady($timeout)
{
$bur = new BlockUntilReadyCache();
$startTime = Latency::startMeasuringLatency();
do {
$lastreadyCheckpoint = $bur->getReadyCheckpoint();
if ($lastreadyCheckpoint > 0) {
return true;
}
// Checkpoint in milliseconds
$checkPoint = Latency::calculateLatency($startTime) / 1000;
// waiting 10 milliseconds
usleep(10000);
} while ($checkPoint < $timeout);
return false;
}
public static function startMeasuringLatency()
{
return Latency::startMeasuringLatency();
}
