/// <inheritdoc />
public async Task <OptimizeRouteResult> OptimizeRoute(OptimizeRouteCriteria criteria)
{
var requestIds = new List <Guid>();
if (!string.IsNullOrEmpty(_mappingSettings?.GoogleMapsApiKey))
{
try
{
// todo sgordon: enhance with Polly for retries
var response = await _httpClient.GetAsync(GenerateGoogleApiUrl(criteria));
if (response.IsSuccessStatusCode)
{
var content = await response.Content.ReadAsStringAsync();
var result = JsonConvert.DeserializeObject <GoogleDirectionsResponse>(content);
if (result.Status == GoogleDirectionsResponse.OkStatus)
{
requestIds.AddRange(result.Routes.SelectMany(r => r.WaypointOrder).Select(waypointIndex => criteria.Waypoints[waypointIndex].RequestId));
return(new OptimizeRouteResult {
RequestIds = requestIds, Distance = result.TotalDistance, Duration = result.TotalDuration
});
}
}
}
catch (Exception ex)
{
_logger.LogError($"Failure to contact Google Directions API - {ex}");
}
}
return(null);
}
private string GenerateGoogleApiUrl(OptimizeRouteCriteria criteria)
{
var requestUrl = new StringBuilder("https://maps.googleapis.com/maps/api/directions/json?origin=");
requestUrl.Append(criteria.StartAddress);
requestUrl.Append("&destination=").Append(criteria.EndAddress);
requestUrl.Append("&waypoints=optimize:true");
foreach (var waypoint in criteria.Waypoints)
{
requestUrl.Append("|").Append(waypoint.Coordinates);
}
requestUrl.Append("&key=").Append(_mappingSettings.GoogleMapsApiKey);
return(requestUrl.ToString());
}
/// <inheritdoc />
public async Task <OptimizeRouteResult> OptimizeRoute(OptimizeRouteCriteria criteria)
{
var requestIds = new List <Guid>();
if (!string.IsNullOrEmpty(_mappingSettings?.GoogleMapsApiKey))
{
try
{
return(await GetRetryPolicy().ExecuteAsync(async() =>
{
var googleResponse = await _httpClient.GetAsync(GenerateGoogleApiUrl(criteria));
if (googleResponse.IsSuccessStatusCode)
{
var content = await googleResponse.Content.ReadAsStringAsync();
var result = JsonConvert.DeserializeObject <GoogleDirectionsResponse>(content);
if (result.Status == GoogleDirectionsResponse.OkStatus)
{
requestIds.AddRange(result.Routes.SelectMany(r => r.WaypointOrder).Select(waypointIndex => criteria.Waypoints[waypointIndex].RequestId));
return new OptimizeRouteResult {
RequestIds = requestIds, Distance = result.TotalDistance, Duration = result.TotalDuration
};
}
}
else
{
// for now we fire an exception to force a Polly retry. We could review this later once we have logging to determine specific codes
// that represent errors
throw new Exception("Non success code");
}
return null;
}));
}
catch
{
// todo - handle other status codes and logging
}
}
return(null);
}
/// <inheritdoc />
public async Task <OptimizeRouteResult> OptimizeRoute(OptimizeRouteCriteria criteria)
{
var requestIds = new List <Guid>();
try
{
return(await GetRetryPolicy().ExecuteAsync(async() =>
{
var googleResponse = await _httpClient.GetAsync(GenerateGoogleApiUrl(criteria));
googleResponse.EnsureSuccessStatusCode();
var content = await googleResponse.Content.ReadAsStringAsync();
var result = JsonConvert.DeserializeObject <GoogleDirectionsResponse>(content);
if (result.Status == GoogleDirectionsResponse.OkStatus)
{
requestIds.AddRange(result.Routes.SelectMany(r => r.WaypointOrder).Select(waypointIndex => criteria.Waypoints[waypointIndex].RequestId));
return new OptimizeRouteResult {
RequestIds = requestIds, Distance = result.TotalDistance, Duration = result.TotalDuration
};
}
else if (result.Status == GoogleDirectionsResponse.NoResultsStatus || result.Status == GoogleDirectionsResponse.NotFound)
{
return OptimizeRouteResult.FailedOptimizeRouteResult(OptimizeRouteStatusMessages.ZeroResults);
}
return OptimizeRouteResult.FailedOptimizeRouteResult(OptimizeRouteStatusMessages.GeneralOptimizeFailure);
}));
}
catch (Exception ex)
{
_logger.LogError($"Unable to connect to Google API {ex}");
// todo - handle other status codes and logging
}
return(OptimizeRouteResult.FailedOptimizeRouteResult(OptimizeRouteStatusMessages.GeneralOptimizeFailure));
}