private void UpdateStatusDisplay(DelayPrediction prediction, ForecastResult forecast)
{
weatherForecast.ImageUrl = forecast.ForecastIconUrl;
weatherForecast.ToolTip = forecast.Condition;
if (String.IsNullOrWhiteSpace(mlApiKey))
{
lblPrediction.Text = "(not configured)";
lblConfidence.Text = "(not configured)";
return;
}
if (prediction == null)
{
throw new Exception("Prediction did not succeed. Check the Settings for mlWorkspaceId, mlServiceId, and mlApiKey.");
}
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(mlApiKey))
{
return;
}
string fullMLUri = string.Format(BASE_ML_URI, !String.IsNullOrWhiteSpace(mlServiceLocation) ? mlServiceLocation : DEFAULT_ML_SERVICE_LOCATION, mlWorkspaceId, mlServiceId);
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", mlApiKey);
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"))
{
this.prediction.ExpectDelays = true;
this.prediction.Confidence = double.Parse(confidence);
}
else if (prediction.Equals("0"))
{
this.prediction.ExpectDelays = false;
this.prediction.Confidence = double.Parse(confidence);
}
else
{
this.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());
throw;
}
}
private async Task PredictDelays(DepartureQuery query, ForecastResult forecast)
{
if (string.IsNullOrEmpty(mlUrl))
{
return;
}
var departureDate = DateTime.Parse(txtDepartureDate.Text);
prediction = new DelayPrediction();
try
{
using (var client = new HttpClient())
{
var predictionRequest = new PredictionRequest
{
OriginAirportCode = query.OriginAirportCode,
Month = query.DepartureDate.Month,
DayofMonth = query.DepartureDate.Day,
CRSDepHour = query.DepartureDate.Hour,
DayOfWeek = query.DepartureDayOfWeek,
Carrier = query.Carrier,
DestAirportCode = query.DestAirportCode,
WindSpeed = forecast.WindSpeed,
SeaLevelPressure = forecast.Pressure,
HourlyPrecip = forecast.Precipitation
};
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", mlApiKey);
client.BaseAddress = new Uri(mlUrl);
var response = await client.PostAsJsonAsync("", predictionRequest).ConfigureAwait(false);
if (response.IsSuccessStatusCode)
{
var result = await response.Content.ReadAsStringAsync();
var token = JToken.Parse(result);
var parsedResult = JsonConvert.DeserializeObject <PredictionResult>((string)token);
if (parsedResult.prediction == 1)
{
this.prediction.ExpectDelays = true;
this.prediction.Confidence = parsedResult.probability;
}
else if (parsedResult.prediction == 0)
{
this.prediction.ExpectDelays = false;
this.prediction.Confidence = parsedResult.probability;
}
else
{
this.prediction = null;
}
}
else
{
prediction = null;
Trace.Write($"The request failed with status code: {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());
var responseContent = await response.Content.ReadAsStringAsync();
Trace.Write(responseContent);
}
}
}
catch (Exception ex)
{
prediction = null;
System.Diagnostics.Trace.TraceError("Failed retrieving delay prediction: " + ex.ToString());
throw;
}
}
