/**
* @param string $exchangeName
* @return integer
*/
public function publishTo($exchangeName)
{
if (!$this->tracker->hasPublishedMessages($exchangeName)) {
$mostRecentMessage = null;
$messages = $this->store->allEvents();
} else {
$mostRecentMessage = $this->tracker->mostRecentPublishedMessage($exchangeName);
$messages = $this->store->eventsStoredAfter($mostRecentMessage->mostRecentMessageId());
}
if (!$messages) {
return 0;
}
$publishedMessages = 0;
$lastPublishedNotification = null;
try {
$this->producer->open($exchangeName);
foreach ($messages as $message) {
$this->producer->send($exchangeName, $message);
$lastPublishedNotification = $message;
$publishedMessages++;
}
$this->producer->close($exchangeName);
} catch (Exception $e) {
} finally {
if (!$mostRecentMessage) {
$mostRecentMessage = new PublishedMessage($exchangeName, $lastPublishedNotification->id());
} else {
$mostRecentMessage->updateMostRecentMessageId($lastPublishedNotification->id());
}
$this->tracker->track($mostRecentMessage);
}
return $publishedMessages;
}
/**
* @param PublishedMessage $mostRecentPublishedMessage
* @throws InvalidPublishedMessageToTrack There can only be one last
* published message for exchange this exception's thrown if 2 are found
*/
public function track(PublishedMessage $mostRecentPublishedMessage)
{
$builder = $this->createQueryBuilder('p');
$builder->andWhere('p.exchangeName = :exchangeName')->setParameter('exchangeName', $mostRecentPublishedMessage->exchangeName());
$currentMessage = $builder->getQuery()->getOneOrNullResult();
if ($currentMessage && !$currentMessage->equals($mostRecentPublishedMessage)) {
throw new InvalidPublishedMessageToTrack();
}
$this->_em->persist($mostRecentPublishedMessage);
$this->_em->flush($mostRecentPublishedMessage);
}
