private static async Task <MessageResponse> MessageReceived(Message message, object userContext)
{
try{
var deviceClient = userContext as DeviceClient;
if (deviceClient == null)
{
throw new InvalidOperationException("UserContext doesn't contain expected values");
}
byte[] messageBytes = message.GetBytes();
string messageString = Encoding.UTF8.GetString(messageBytes);
Console.WriteLine($"Received message {DateTime.UtcNow.ToString()}: {messageString}");
DHTMessageBody messageBody = null;
// Get message body
try{
messageBody = JsonConvert.DeserializeObject <DHTMessageBody>(messageString);
}
catch (Exception ex) {
Console.WriteLine("Cannot deserialize message.");
Console.WriteLine(ex);
Console.WriteLine(ex.Message);
}
if (messageBody != null)
{
//do the scoring
var prediction = AnomalyDetector.IsAnomaly(messageBody.temperature, messageBody.humidity);
var predictionMessage = new ScoredDHTMessageBody(messageBody, prediction);
var jsonMessage = JsonConvert.SerializeObject(predictionMessage);
var pipeMessage = new Message(Encoding.UTF8.GetBytes(jsonMessage));
pipeMessage.Properties.Add("content-type", "application/json");
await deviceClient.SendEventAsync("output1", pipeMessage);
Console.WriteLine($"Scored data sent {predictionMessage.timeCreated}: {predictionMessage.temperature} | {predictionMessage.humidity} | Anomaly {predictionMessage.IsAnomaly}");
}
}
catch (Exception ex) {
Console.WriteLine($"Exception occured: {ex.Message}");
Console.WriteLine(ex);
}
return(MessageResponse.Completed);
}
private static Task onDesiredPropertiesUpdate(TwinCollection desiredProperties, object userContext)
{
if (desiredProperties.Count == 0)
{
return(Task.CompletedTask);
}
try
{
Console.WriteLine("Desired property change:");
Console.WriteLine(JsonConvert.SerializeObject(desiredProperties));
var deviceClient = userContext as DeviceClient;
if (deviceClient == null)
{
throw new InvalidOperationException("UserContext doesn't contain " + "expected values");
}
var reportedProperties = new TwinCollection();
if (desiredProperties["TemperatureMeanValue"] != null)
{
TemperatureMeanValue = desiredProperties["TemperatureMeanValue"];
reportedProperties["TemperatureMeanValue"] = TemperatureMeanValue;
}
if (desiredProperties["TemperatureStdDeviation"] != null)
{
TemperatureStdDeviation = desiredProperties["TemperatureStdDeviation"];
reportedProperties["TemperatureStdDeviation"] = TemperatureStdDeviation;
}
if (desiredProperties["HumidityMeanValue"] != null)
{
HumidityMeanValue = desiredProperties["HumidityMeanValue"];
reportedProperties["HumidityMeanValue"] = HumidityMeanValue;
}
if (desiredProperties["HumidityStdDeviation"] != null)
{
HumidityStdDeviation = desiredProperties["HumidityStdDeviation"];
reportedProperties["HumidityStdDeviation"] = HumidityStdDeviation;
}
AnomalyDetector = new AnomalyDetector(TemperatureMeanValue, TemperatureStdDeviation, HumidityMeanValue, HumidityStdDeviation);
if (reportedProperties.Count > 0)
{
deviceClient.UpdateReportedPropertiesAsync(reportedProperties).ConfigureAwait(false);
}
}
catch (AggregateException ex)
{
foreach (Exception exception in ex.InnerExceptions)
{
Console.WriteLine();
Console.WriteLine("Error when receiving desired property: {0}", exception);
}
}
catch (Exception ex)
{
Console.WriteLine();
Console.WriteLine("Error when receiving desired property: {0}", ex.Message);
}
return(Task.CompletedTask);
}