private function connect()
{
self::$connection = new AMQPStreamConnection(self::RABBIT_MQ_HOST, self::RABBIT_MQ_PORT, self::RABBIT_MQ_USER, self::RABBIT_MQ_PASSWORD);
self::$channel = self::$connection->channel();
self::$channel->queue_declare(self::RABBIT_MQ_QUEUE, false, true, false, false);
}
public static function calcAverage($recipient_id)
{
self::connect();
$criteria = array('recipient_id' => $recipient_id);
$ratings = self::$collection->find($criteria, array('rating' => 1));
$ratingsCount = self::$collection->count($criteria);
self::closeConnection();
$result = 0;
foreach ($ratings as $rating) {
$result += $rating['rating'];
}
$average = round(round($result / $ratingsCount, 3, PHP_ROUND_HALF_EVEN), 1);
$userRating = array('id' => $recipient_id, 'rating' => $average);
UserRatingPublisher::publish($userRating);
}