/// <summary>
/// Unsubscribes the calling client from the logger.
/// </summary>
/// <remarks>
/// Unregisters the event handler for the item, removes the client to the SignalR group for the item's FQN,
/// unsubscribes the client from the item within the HubManager and calls the unsubscribeSuccess() method on the
/// calling client.
/// </remarks>
public void Unsubscribe(object arg)
{
Groups.Remove(Context.ConnectionId, "Logger");
hubManager.Unsubscribe("Logger", Context.ConnectionId);
Clients.Caller.unsubscribeSuccess("Logger");
logger.Info(GetLogPrefix() + "unsubscribed from the Logger.");
logger.Info("SignalR Logger now has " + hubManager.GetSubscriptions("Logger").Count + " subscriber(s).");
}
/// <summary>
/// Unsubscribes the calling client from the item matching the provided FQN.
/// </summary>
/// <remarks>
/// Unregisters the event handler for the item, removes the client to the SignalR group for the item's FQN,
/// unsubscribes the client from the item within the HubManager and calls the unsubscribeSuccess() method on the
/// calling client.
/// </remarks>
/// <param name="arg">the Fully Qualified Name of the item to which the client is to be unsubscribed.</param>
public void Unsubscribe(object arg)
{
string castFQN = (string)arg;
// Item foundItem = manager.ProviderRegistry.FindItem(castFQN);
Item foundItem = manager.GetManager <IModelManager>().FindItem(castFQN);
if (foundItem != default(Item))
{
foundItem.Changed -= hubManager.OnChange;
Groups.Remove(Context.ConnectionId, foundItem.FQN);
hubManager.Unsubscribe(foundItem.FQN, Context.ConnectionId);
Clients.Caller.unsubscribeSuccess(castFQN);
logger.Info(GetLogPrefix() + "unsubscribed from '" + foundItem.FQN + "'.");
logger.Info("SignalR Item '" + foundItem.FQN + "' now has " + hubManager.GetSubscriptions(foundItem.FQN)?.Count ?? 0 + " subscriber(s).");
}
else
{
Clients.Caller.unsubscribeError(castFQN);
logger.Info("Unable to unsubscribe from '" + castFQN + "'; the Item can't be found.");
}
}
