/// <summary>
/// Restores the state of all signals from a blob string created by signalStateToBlob
/// </summary>
/// <param name="rta">Runtime application to restore to</param>
/// <param name="blob">blob</param>
private static void restoreSignalStateFromBlob(NodeRuntimeApplication rta, string blob)
{
if (rta == null)
{
throw new ArgumentNullException("rta");
}
if (blob == null)
{
return;
}
var signalValues = EncodedSignalValue.ParseEncodedSignals(blob, rta.Signals);
foreach (var signalTuple in signalValues)
{
NodeSignal signal = signalTuple.Item1;
object value = signalTuple.Item2;
try
{
signal.Value = value;
}
catch
{
// FIXME - tie into error reporting feature, to be developed
}
}
}
/// <summary>
/// Stores the state of all signals into a string that can be saved to a file.
/// </summary>
/// <param name="rta">Runtime application to store the state of</param>
/// <returns>blob</returns>
private static string signalStateToBlob(NodeRuntimeApplication rta)
{
if (rta == null)
{
throw new ArgumentNullException("rta");
}
var encodedSignals = from signal in rta.Signals select EncodedSignalValue.EncodeSignalValue(signal);
return(string.Join(string.Empty, encodedSignals));
}
public void ReadSignalValues(IEnumerable <NodeSignal> signals)
{
if (Properties.Settings.Default.RunAsService)
{
var outPayload = new StringBuilder();
foreach (var signal in signals)
{
outPayload.Append(signal.SignalId.ToString());
}
var response = sendReceiveTelegram <NodeTelegram>(m_TelegramReadSignals.SetPayload(FieldBase64.Encode(outPayload.ToString())));
if (response != null)
{
foreach (var tpl in EncodedSignalValue.ParseEncodedSignals(response.Payload.Decode(), signals))
{
var signal = tpl.Item1;
var value = tpl.Item2;
m_runtimeService.Value.NotifyValueChanged(signal, value);
}
}
}
else
{
// uploading is instant
var nRuntimeApplication = RuntimeApplicationUpload();
if (nRuntimeApplication != null)
{
foreach (var sig in signals)
{
var foundSig = nRuntimeApplication.FindSignal(sig.SignalId);
if (foundSig != null)
{
m_runtimeService.Value.NotifyValueChanged(foundSig, foundSig.Value);
}
}
}
}
}
private NodeTelegram readSignals(NodeTelegram request)
{
// incoming request should just be a bunch of Guids that represent signalIds
var inPayload = request.Payload.Decode();
var outPayload = new StringBuilder();
if (runtimeApplication != null)
{
for (int index = 0; index < inPayload.Length; index += m_guidLength)
{
string oneGuidString = inPayload.Substring(index, m_guidLength);
if (FieldGuid.CheckSyntax(oneGuidString))
{
var signalId = new FieldGuid(oneGuidString);
var signal = runtimeApplication.FindSignal(signalId);
if (signal != null)
{
outPayload.Append(EncodedSignalValue.EncodeSignalValue(signal));
}
}
}
}
return(request.SetPayload(FieldBase64.Encode(outPayload.ToString())));
}
