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($"Exception occured: {ex.Message}");
Console.WriteLine(ex);
}
return(MessageResponse.Completed);
}
private static async void ThreadBody(object userContext)
{
var url = LocalhostUrl;
Console.WriteLine($"Connecting to DHT sensor via url {url}");
DataLoader = new DHTDataLoader(url);
while (true)
{
var deviceClient = userContext as DeviceClient;
if (deviceClient == null)
{
throw new InvalidOperationException("UserContext doesn't contain " + "expected values");
}
var data = DataLoader.GetDHTData();
DHTMessageBody dhttMessageBody;
if (data == null)
{
Console.WriteLine("Error: Cannot read DHT Data from local machine");
}
else
{
dhttMessageBody = new DHTMessageBody
{
timeCreated = DateTime.Now.ToString("hh:mm:ss"),
humidity = data.Humidity,
temperature = data.Temperature
};
var jsonMessage = JsonConvert.SerializeObject(dhttMessageBody);
var pipeMessage = new Message(Encoding.UTF8.GetBytes(jsonMessage));
pipeMessage.Properties.Add("content-type", "application/json");
await deviceClient.SendEventAsync("output1", pipeMessage);
Console.WriteLine($"DHT data sent {dhttMessageBody.timeCreated}: {dhttMessageBody.temperature} | {dhttMessageBody.humidity}");
}
Thread.Sleep(Interval);
}
}
public ScoredDHTMessageBody(DHTMessageBody baseMessage, bool isAnomaly) : this(baseMessage)
{
this.IsAnomaly = isAnomaly;
}
public ScoredDHTMessageBody(DHTMessageBody baseMessage)
{
this.temperature = baseMessage.temperature;
this.humidity = baseMessage.humidity;
this.timeCreated = baseMessage.timeCreated;
}
