public void EnqueueNotification(INotification notification, bool urgent)
{
lock (_syncObj)
{
if (urgent)
{
_urgentQueue.Insert(0, notification);
}
else
{
_normalQueue.Insert(0, notification);
}
int numUrgentMessages = _urgentQueue.Count;
int numNormalMessages = _normalQueue.Count;
int numPendingNotifications = numUrgentMessages + numNormalMessages;
if (numPendingNotifications > PENDING_NOTIFICATIONS_WARNING_THRESHOLD)
{
ServiceRegistration.Get <ILogger>().Warn("NotificationService: {0} pending notifications", numPendingNotifications);
while (_urgentQueue.Count > MAX_NUM_PENDING_NOTIFICATIONS_THRESHOLD)
{
INotification prunedNotification = _urgentQueue[_urgentQueue.Count - 1];
ServiceRegistration.Get <ILogger>().Warn("NotificationService: Removing unhandled urgent notification '{0}'", prunedNotification);
_urgentQueue.RemoveAt(_urgentQueue.Count - 1);
}
while (_normalQueue.Count > MAX_NUM_PENDING_NOTIFICATIONS_THRESHOLD)
{
INotification prunedNotification = _normalQueue[_normalQueue.Count - 1];
ServiceRegistration.Get <ILogger>().Warn("NotificationService: Removing unhandled normal notification '{0}'", prunedNotification);
_normalQueue.RemoveAt(_normalQueue.Count - 1);
}
}
}
NotificationServiceMessaging.SendMessage(NotificationServiceMessaging.MessageType.NotificationEnqueued, notification);
}
public void RemoveNotification(INotification notification)
{
bool removed;
lock (_syncObj)
removed = _normalQueue.Remove(notification) || _urgentQueue.Remove(notification);
if (removed)
{
NotificationServiceMessaging.SendMessage(NotificationServiceMessaging.MessageType.NotificationRemoved, notification);
}
}
public INotification DequeueNotification()
{
INotification notification;
lock (_syncObj)
{
if (_urgentQueue.Count > 0)
{
notification = _urgentQueue[_urgentQueue.Count - 1];
_urgentQueue.RemoveAt(_urgentQueue.Count - 1);
}
else if (_normalQueue.Count > 0)
{
notification = _normalQueue[_normalQueue.Count - 1];
_normalQueue.RemoveAt(_normalQueue.Count - 1);
}
else
{
return(null);
}
}
NotificationServiceMessaging.SendMessage(NotificationServiceMessaging.MessageType.NotificationRemoved, notification);
return(notification);
}
