/// <summary>
/// Execute HTTP request and read the response.
/// </summary>
/// <param name="request"></param>
/// <returns>Formatted response from service.</returns>
private RootRouteObject ExecuteAndRead(DriveReportTransportType transportType, HttpWebRequest request)
{
var responseString = "";
Stream responseStream;
try
{
var distanceResponse = request.GetResponse();
responseStream = distanceResponse.GetResponseStream();
}
catch (WebException e)
{
var up = new RouteInformationException("Server error", e);
//Logger.Error("Server error", up);
throw up;
}
if (responseStream == null)
{
return(null);
}
var streamReader = new StreamReader(responseStream);
responseString = streamReader.ReadToEnd();
streamReader.Close();
return(ParseJson(transportType, responseString));
}
/// <summary>
/// Build query URL and create HTTP request following the service API url specifications.
/// </summary>
/// <param name="transportType">Type of transport. Car or Bike</param>
/// <param name="routeCoordinates"></param>
/// <returns></returns>
private HttpWebRequest CreateRequest(DriveReportTransportType transportType, IEnumerable <Coordinates> routeCoordinates)
{
string query = "";
var coordinateses = routeCoordinates as IList <Coordinates> ?? routeCoordinates.ToList();
Coordinates origin, destination;
try
{
origin = coordinateses.Single(p => p.Type == Coordinates.CoordinatesType.Origin);
destination = coordinateses.Single(p => p.Type == Coordinates.CoordinatesType.Destination);
}
catch (InvalidOperationException e)
{
var up = new RouteInformationException("Mutltiple coordinates with type Origin and/or Destination.", e);
//Logger.Error("Multiple coordinates with type origin and/or destination", up);
throw up;
}
if (origin == null || destination == null)
{
var up = new RouteInformationException("Coordinate of type Origin and/or Destination missing.");
//Logger.Error("Coordinate of type Origin and/or destination missing.", up);
throw up;
}
//if (!((origin.Latitude.Length - origin.Latitude.IndexOf(".") + 1) <= 5))
//{
// origin.Latitude = origin.Latitude.Substring(0, origin.Latitude.IndexOf('.') + 1 + AddressCoordinates.CoordDecimals);
// origin.Longitude = origin.Longitude.Substring(0, origin.Longitude.IndexOf('.') + 1 + AddressCoordinates.CoordDecimals);
//}
query = "loc=" + origin.Latitude + "," + origin.Longitude;
query = coordinateses.Where(p => p.Type == Coordinates.CoordinatesType.Via).Aggregate(query, (current, point) => current + ("&loc=" + point.Latitude + "," + point.Longitude));
query += "loc=" + destination.Latitude + "," + destination.Longitude + "&instructions=true";
switch (transportType)
{
case DriveReportTransportType.Car:
return((HttpWebRequest)WebRequest.Create(UrlDefinitions.RoutingUrl + query));
case DriveReportTransportType.Bike:
return((HttpWebRequest)WebRequest.Create(UrlDefinitions.BikeRoutingUrl + query));
}
// Should never be reached
return(null);
}
/// <summary>
/// Get routes and alternative routes for the given set of coordinates.
/// </summary>
/// <param name="transportType">Type of transport. Car or Bike.</param>
/// <param name="routeCoordinates"></param>
/// <exception cref="RouteInformationException">Thrown if no route was returned or no rute was found.</exception>
/// <returns></returns>
public IEnumerable <RouteInformation> GetRoute(DriveReportTransportType transportType, IEnumerable <Coordinates> routeCoordinates)
{
List <RouteInformation> routes = new List <RouteInformation>();
HttpWebRequest request = CreateRequest(transportType, routeCoordinates);
RootRouteObject result = ExecuteAndRead(transportType, request);
if (result == null)
{
var e = new RouteInformationException("No route returned.");
//Logger.Error("Exception when getting route information", e);
throw e;
}
//From septima 01/09 2016:
//Routingservices kan forventes senere at returnere status = 200,
//idet OSRM er gået fra at bruge "C style" exit-koder, til "HTTP Style" status-koder.
if (result.status != 0 && result.status / 100 == 2)
{
var e = new RouteInformationException("No route found.");;
//Logger.Error("Exception when getting route information", e);
throw e;
}
var route = new RouteInformation();
route.Length = result.route_summary.distance_not_including_ferry;
route.Duration = result.route_summary.total_time;
route.EndStreet = result.route_summary.end_point;
route.StartStreet = result.route_summary.start_point;
route.GeoPoints = result.route_geometry;
routes.Add(route);
for (int i = 0; i < result.alternative_summaries.Count; i++)
{
route = new RouteInformation
{
Length = result.alternative_summaries[i].total_distance,
Duration = result.alternative_summaries[i].total_time,
EndStreet = result.alternative_summaries[i].end_point,
StartStreet = result.alternative_summaries[i].start_point,
GeoPoints = result.alternative_geometries[i]
};
routes.Add(route);
}
return(routes);
}
/// <summary>
/// Get routes and alternative routes for the given set of coordinates.
/// </summary>
/// <param name="transportType">Type of transport. Car or Bike.</param>
/// <param name="routeCoordinates"></param>
/// <exception cref="RouteInformationException">Thrown if no route was returned or no rute was found.</exception>
/// <returns></returns>
public IEnumerable <RouteInformation> GetRoute(DriveReportTransportType transportType, IEnumerable <Coordinates> routeCoordinates)
{
List <RouteInformation> routes = new List <RouteInformation>();
HttpWebRequest request = CreateRequest(transportType, routeCoordinates);
RootRouteObject result = ExecuteAndRead(transportType, request);
if (result == null)
{
var e = new RouteInformationException("No route returned.");
//Logger.Error("Exception when getting route information", e);
throw e;
}
if (result.status != 0)
{
var e = new RouteInformationException("No route found.");;
//Logger.Error("Exception when getting route information", e);
throw e;
}
var route = new RouteInformation();
route.Length = result.route_summary.distance_not_including_ferry;
route.Duration = result.route_summary.total_time;
route.EndStreet = result.route_summary.end_point;
route.StartStreet = result.route_summary.start_point;
route.GeoPoints = result.route_geometry;
routes.Add(route);
for (int i = 0; i < result.alternative_summaries.Count; i++)
{
route = new RouteInformation
{
Length = result.alternative_summaries[i].total_distance,
Duration = result.alternative_summaries[i].total_time,
EndStreet = result.alternative_summaries[i].end_point,
StartStreet = result.alternative_summaries[i].start_point,
GeoPoints = result.alternative_geometries[i]
};
routes.Add(route);
}
return(routes);
}
