protected void btnPredictDelays_Click(object sender, EventArgs e)
{
var departureDate = DateTime.Parse(txtDepartureDate.Text);
departureDate.AddHours(double.Parse(txtDepartureHour.Text));
var selectedAirport = ddlOriginAirportCode.SelectedItem;
DepartureQuery query = new DepartureQuery()
{
DepartureDate = departureDate,
DepartureDayOfWeek = ((int)departureDate.DayOfWeek) + 1, //Monday = 1
Carrier = txtCarrier.Text,
OriginAirportCode = ddlOriginAirportCode.SelectedItem.Text,
OriginAirportWundergroundID = ddlOriginAirportCode.SelectedItem.Value,
DestAirportCode = ddlDestAirportCode.SelectedItem.Text
};
GetWeatherForecast(query).Wait();
if (_forecast == null)
{
throw new Exception("Forecast request did not succeed. Check Settings for Weather_APIKey.");
}
PredictDelays(query, _forecast).Wait();
UpdateStatusDisplay(_prediction, _forecast);
}
private async Task GetWeatherForecast(DepartureQuery departureQuery)
{
DateTime departureDate = departureQuery.DepartureDate;
string fullWeatherURI = string.Format(baseWeatherUri, settings.Weather_APIKey, departureQuery.OriginAirportWundergroundID);
_forecast = null;
try
{
using (var client = new HttpClient())
{
HttpResponseMessage response = await client.GetAsync(fullWeatherURI).ConfigureAwait(false);
if (response.IsSuccessStatusCode)
{
string result = await response.Content.ReadAsStringAsync();
JObject jsonObj = JObject.Parse(result);
_forecast = (from f in jsonObj["hourly_forecast"]
where f["FCTTIME"]["year"].Value <int>() == departureDate.Year &&
f["FCTTIME"]["mon"].Value <int>() == departureDate.Month &&
f["FCTTIME"]["mday"].Value <int>() == departureDate.Day &&
f["FCTTIME"]["hour"].Value <int>() == departureDate.Hour
select new ForecastResult()
{
WindSpeed = f["wspd"]["english"].Value <int>(),
Precipitation = f["qpf"]["english"].Value <double>(),
Pressure = f["mslp"]["english"].Value <double>(),
ForecastIconUrl = f["icon_url"].Value <string>(),
Condition = f["condition"].Value <string>()
}).FirstOrDefault();
}
}
}
catch (Exception ex)
{
System.Diagnostics.Trace.TraceError("Failed retrieving weather forecast: " + ex.ToString());
}
}
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());
}
}