private int RetrieveNotification(out WoopsaClientNotifications notificationsResult, int lastNotificationId)
{
WoopsaJsonData results = WaitNotification(_subscriptionOpenChannel.Value, lastNotificationId);
var notificationsList = new WoopsaClientNotifications();
int count = 0;
for (int i = 0; i < results.Length; i++)
{
WoopsaJsonData notification = results[i];
var notificationValue = notification["Value"];
var notificationSubscriptionId = notification["SubscriptionId"];
var notificationId = notification["Id"];
WoopsaValueType type = (WoopsaValueType)Enum.Parse(typeof(WoopsaValueType), notificationValue["Type"]);
WoopsaValue value = WoopsaValue.CreateChecked(notificationValue["Value"], type, DateTime.Parse(notificationValue["TimeStamp"]));
WoopsaClientNotification newNotification = new WoopsaClientNotification(value, notificationSubscriptionId);
newNotification.Id = notificationId;
notificationsList.Add(newNotification);
count++;
}
notificationsResult = notificationsList;
return count;
}
private void ExecuteNotifications(WoopsaClientNotifications notifications)
{
List<int> lostSubscriptions = null;
// Synchronize with the notification registration process to be sure we will not
// process notifications for subscriptions that are not yet completely registered
lock (_subscriptionLock)
{
foreach (WoopsaClientNotification notification in notifications.Notifications)
{
if (_registeredSubscriptions.ContainsKey(notification.SubscriptionId))
_registeredSubscriptions[notification.SubscriptionId].Execute(notification);
else
{
// there is a lost Subscription in the server which produces notifications, we have to unsubscribe it
if (lostSubscriptions == null)
lostSubscriptions = new List<int>();
lostSubscriptions.Add(notification.SubscriptionId);
}
if (notification.Id > _lastNotificationId)
_lastNotificationId = notification.Id;
}
}
if (lostSubscriptions != null)
lock (_lostSubscriptions)
_lostSubscriptions.AddRange(lostSubscriptions);
}