public EnergyReading ParseAsEnergyReading(string readingData)
{
var energyReading = new EnergyReading
{
TimeStamp = DateTime.MinValue,
Energy = float.NaN,
Temperature = float.NaN,
IsValid = false,
Source = "energymonitor"
};
try
{
// parse the xml based reading
XmlDocument xDoc = new XmlDocument();
xDoc.LoadXml(readingData);
energyReading.RawData = xDoc.OuterXml;
XmlNode xNode = xDoc.SelectSingleNode("/msg/time");
energyReading.TimeStamp = XmlConvert.ToDateTime(xNode.InnerText);
xNode = xDoc.SelectSingleNode("/msg/tmpr");
if (null == xNode)
{
// try the tmprF element instead
xNode = xDoc.SelectSingleNode("/msg/tmprF");
}
if (xNode != null)
{
energyReading.Temperature = System.Xml.XmlConvert.ToSingle(xNode.InnerText);
}
xNode = xDoc.SelectSingleNode("/msg/ch1/watts");
if ((null != xNode) && (string.Empty != xNode.InnerText))
{
energyReading.Energy = System.Xml.XmlConvert.ToInt32(xNode.InnerText);
}
xNode = xDoc.SelectSingleNode("/msg/ch2/watts");
if ((null != xNode) && (string.Empty != xNode.InnerText))
{
energyReading.Energy += System.Xml.XmlConvert.ToInt32(xNode.InnerText);
}
xNode = xDoc.SelectSingleNode("/msg/ch3/watts");
if ((null != xNode) && (string.Empty != xNode.InnerText))
{
energyReading.Energy += System.Xml.XmlConvert.ToInt32(xNode.InnerText);
}
energyReading.IsValid = true;
}
catch (Exception ex)
{
// invalid reading
Debug.WriteLine("Error parsing xml data to create EnergyReading: " + ex.Message);
}
return(energyReading);
}
protected virtual void OnReadingReceived(EnergyReading rdg)
{
var handler = this.ReadingReceived;
if (handler != null)
{
handler(this, rdg);
}
}
void energyReader_ReadingReceived(object sender, EnergyReading energyReading)
{
string rawData = energyReading.RawData;
if (!string.IsNullOrWhiteSpace(rawData) && rawData.Length >= 40)
{
rawData = rawData.Substring(0, 40);
}
Console.WriteLine("{0} {1} {2} {3}", energyReading.TimeStamp, energyReading.Temperature, energyReading.Energy, rawData);
eventHubWriter.SendToEventHub(energyReading);
}
private void SerialDataReceived(object sender, SerialDataReceivedEventArgs e)
{
this.rxBuffer += this.comm.ReadExisting();
while (this.IsReading(this.rxBuffer))
{
// we have a reading (or partial reading), so let's process
EnergyReading rdg = this.ExtractReading(ref this.rxBuffer);
if (rdg.IsValid)
{
this.OnReadingReceived(rdg);
}
}
}
private void Timer_Elapsed(object sender, ElapsedEventArgs e)
{
var energyReading = new EnergyReading
{
Energy = random.Next(19, 21),
RawData = string.Empty,
TimeStamp = DateTime.UtcNow,
Source = "fake",
IsValid = true
};
OnReadingReceived(energyReading);
}
public static async Task <HttpResponseMessage> Run(
[HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequestMessage req,
[Table("readings", Connection = "FNEMS")] CloudTable tableBinding,
TraceWriter log)
{
log.Info("C# HTTP trigger function processed a request.");
EnergyReading reading = new EnergyReading()
{
RowKey = DateTime.Now.ToString() + DateTime.Now.Millisecond,
Electricity = ParseDoubleOrDefault(GetParameter(req, "elec")),
Gas = ParseDoubleOrDefault(GetParameter(req, "gas")),
Office = ToAzureKeyString(GetParameter(req, "office")),
ReadingDate = ParseDateOrDefault(GetParameter(req, "date")),
Comment = ToAzureKeyString(GetParameter(req, "comment"))
};
TableOperation updateOperation = TableOperation.Insert(reading);
TableResult result = tableBinding.Execute(updateOperation);
return(req.CreateResponse(HttpStatusCode.OK, reading));
}
public void SendToEventHub(EnergyReading e)
{
eventHubClient.Send(new EventData(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(e))));
}
private EnergyReading SetupNewReading(FeatureType featureType, uint featureId, DateTime curTime, DeviceDetailPeriods_EnergyMeter days)
{
EnergyReading reading = new EnergyReading();
if (LastRecordTime.HasValue)
reading.Initialise(days, curTime, LastRecordTime.Value, false);
else
reading.Initialise(days, curTime, TimeSpan.FromSeconds(DeviceInterval), false);
return reading;
}
