/// <summary>
/// Procedure to run when payload is received from stream. Data is cast to the appropriate data type, and the OnPayloadReceived_Callback is invoked on all subscriptions that involves the given attribute
/// </summary>
/// <param name="payload">The data being received from the data stream</param>
/// <param name="attribute">The attribute being received</param>
/// <param name="data_type">The data type that the received data is represented as</param>
public void ReceivePayload(object payload, string attribute, string data_type, string stream_label)
{
if (subscriptions.Count > 0 && HasSubscription(attribute) && OnPayloadReceived_Callback != null)
{
DataSubscription subscription = subscriptions[attribute];
payload = Utils.Cast.ToType(payload, data_type);
OnPayloadReceived_Callback.Invoke(payload, attribute, stream_label);
if (observe_values)
{
if (!observedValues.ContainsLabel(attribute))
{
if (observedValues.AddWithType(attribute, data_type) != null)
{
observedValues[attribute].OnUpdate(onObservableValueChanged_cb);
}
}
if (observedValues.ContainsLabel(attribute))
{
IObservableNumericValue observedAttribute = observedValues[attribute];
observedAttribute = observedValues[attribute];
observedAttribute.Value = payload;
}
}
}
}
/// <summary>
/// Subscribe to data on a stream with a given attribute and data type
/// </summary>
/// <param name="stream">The data stream to receive data trough</param>
/// <param name="attribute">The attribute to receive data from in the data stream</param>
/// <param name="data_type">The datatype the data is represented as</param>
public void Subscribe(DataStream stream, string attribute, string data_type)
{
DataSubscription sub = new DataSubscription(this, attribute, data_type);
stream.AddReceiver(this);
if (!HasSubscription(attribute))
{
stream.Output(Request.Subscription("subscribe", attribute));
subscriptions.Add(attribute, sub);
}
}