private void UpdateStatusDisplay(DelayPrediction prediction, ForecastResult forecast)
{
weatherForecast.ImageUrl = forecast.ForecastIconUrl;
weatherForecast.ToolTip = forecast.Condition;
if (String.IsNullOrWhiteSpace(settings.ML_APIKey))
{
lblPrediction.Text = "not configured";
lblConfidence.Text = "(not configured)";
return;
}
if (prediction == null)
{
throw new Exception("Prediction did not succeed. Check the Settings for ML_WorkspaceID, ML_ServiceID, and ML_APIKey.");
}
if (prediction.ExpectDelays)
{
lblPrediction.Text = "expect delays";
}
else
{
lblPrediction.Text = "no delays expected";
}
lblConfidence.Text = string.Format("{0:N2}", (prediction.Confidence * 100.0));
}
private async Task PredictDelays(DepartureQuery query, ForecastResult forecast)
{
if (String.IsNullOrEmpty(settings.ML_APIKey))
{
return;
}
string fullMLUri = string.Format(baseMLUri, settings.ML_RegionPrefix, settings.ML_WorkspaceID, settings.ML_ServiceID);
var departureDate = DateTime.Parse(txtDepartureDate.Text);
_prediction = new DelayPrediction();
try
{
using (var client = new HttpClient())
{
var scoreRequest = new
{
Inputs = new Dictionary <string, StringTable>()
{
{
"input1",
new StringTable()
{
ColumnNames = new string[] {
"OriginAirportCode", "Month", "DayofMonth",
"CRSDepHour", "DayOfWeek", "Carrier",
"DestAirportCode", "WindSpeed", "SeaLevelPressure", "HourlyPrecip"
},
Values = new string[, ]
{
{
query.OriginAirportCode, query.DepartureDate.Month.ToString(), query.DepartureDate.Day.ToString(),
query.DepartureDate.Hour.ToString(), query.DepartureDayOfWeek.ToString(), query.Carrier,
query.DestAirportCode,
forecast.WindSpeed.ToString(),
forecast.Pressure.ToString(),
forecast.Precipitation.ToString()
}
}
}
},
},
GlobalParameters = new Dictionary <string, string>()
{
}
};
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", settings.ML_APIKey);
client.BaseAddress = new Uri(fullMLUri);
HttpResponseMessage response = await client.PostAsJsonAsync("", scoreRequest).ConfigureAwait(false);
if (response.IsSuccessStatusCode)
{
string result = await response.Content.ReadAsStringAsync();
JObject jsonObj = JObject.Parse(result);
string prediction = jsonObj["Results"]["output1"]["value"]["Values"][0][10].ToString();
string confidence = jsonObj["Results"]["output1"]["value"]["Values"][0][11].ToString();
if (prediction.Equals("1"))
{
_prediction.ExpectDelays = true;
_prediction.Confidence = Double.Parse(confidence);
}
else if (prediction.Equals("0"))
{
_prediction.ExpectDelays = false;
_prediction.Confidence = Double.Parse(confidence);
}
else
{
_prediction = null;
}
}
else
{
_prediction = null;
Trace.Write(string.Format("The request failed with status code: {0}", response.StatusCode));
// Print the headers - they include the request ID and the timestamp, which are useful for debugging the failure
Trace.Write(response.Headers.ToString());
string responseContent = await response.Content.ReadAsStringAsync();
Trace.Write(responseContent);
}
}
}
catch (Exception ex)
{
_prediction = null;
System.Diagnostics.Trace.TraceError("Failed retrieving delay prediction: " + ex.ToString());
}
}
