public async Task<int> AddQuote(CarQuoteRequestDto request)
{
_logger.Trace("Persisting Quote prior to external query");
// only the ref is passed in. get the Id (FK constraint)
request.VehicleId = _context.VehicleDetails.First(x => x.VehicleRef == request.VehicleRef).VehicleId;
var mappedQuote = Mapper.Map<CarInsuranceQuoteRequest>(request);
mappedQuote.UTCDateAdded = DateTime.UtcNow;
_context.CarInsuranceQuoteRequests.Add(mappedQuote);
await _context.SaveChangesAsync();
return mappedQuote.CarQuoteId;
}
public async Task<int> AddQuotes(CarQuoteRequestDto request, VehicleDetailsDto vehicle)
{
int quoteId = await _carQuoteRequestWriter.AddQuote(request); // add it to the database
var gateway = _restFactory.CreateGateway<ServiceCarInsuranceQuoteRequest>(EndPoint.InsuranceService);
var tasksToCallService = new List<Task<HttpResponseMessage>>(); // task collection
// create a task for each external service call
foreach (var insurer in Enum.GetValues(typeof (Insurer)))
{
_logger.Trace("Sending Request for {0}", insurer);
var serviceRequest = BuildServiceRequest((Insurer)insurer, quoteId, request, vehicle);
Task<HttpResponseMessage> response = gateway.Post(serviceRequest, "api/carinsurancequote");
tasksToCallService.Add(response);
}
// add timeout handling for each service call
TimeSpan timeOut = TimeSpan.FromSeconds(Timeout);
var tasksToComplete = tasksToCallService.Select(serviceCall => Task.WhenAny(serviceCall, Task.Delay(timeOut))).ToList();
// wait for the tasks to complete or timeout
await Task.WhenAll(tasksToComplete);
// create a collection to hold all async responses
IEnumerable<ServiceCarInsuranceQuoteResponse> allQuotes = new List<ServiceCarInsuranceQuoteResponse>();
// read and merge the results from successful tasks
foreach (var response in tasksToCallService.Where(resp => resp.Status == TaskStatus.RanToCompletion && resp.Result.IsSuccessStatusCode))
{
var quotes = await response.Result.Content.ReadAsAsync<IEnumerable<ServiceCarInsuranceQuoteResponse>>();
allQuotes = allQuotes.Concat(quotes);
}
// Valid but slower alternative (await after each call == sync approach)
/*
foreach (var insurer in Enum.GetValues(typeof(Insurer)))
{
// build the object to post
var serviceRequest = new ServiceCarInsuranceQuoteRequest
{
QuoteRequestId = quoteId,
NoClaimsDiscountYears = request.NoClaimsDiscountYears.HasValue ? request.NoClaimsDiscountYears.Value : 0,
VehicleValue = request.VehicleValue.HasValue ? request.VehicleValue.Value : 0,
CurrentRegistration = vehicle.CurrentRegistration,
DriverAge = request.DriverAge.HasValue ? request.DriverAge.Value : 0,
ModelDesc = vehicle.ModelDesc,
IsImport = vehicle.IsImport,
ManufYear = vehicle.ManufYear.HasValue ? vehicle.ManufYear.Value : 0,
Insurer = (Insurer)insurer
};
var response = await gateway.Post(serviceRequest, "api/carinsurancequote");
if (response != null)
{
_logger.Trace("Response from {0}", insurer.ToString());
var quotes = await response.Content.ReadAsAsync<IEnumerable<ServiceCarInsuranceQuoteResponse>>();
allQuotes = allQuotes.Concat(quotes);
}
}
*/
// determine which is the cheapest by quote type
var responsesToSave = Mapper.Map<IEnumerable<CarQuoteResponseDto>>(allQuotes);
var carQuoteResponseDtos = responsesToSave as CarQuoteResponseDto[] ?? responsesToSave.ToArray();
var cheapestQuotes = carQuoteResponseDtos
.GroupBy(x => x.QuoteType)
.SelectMany(y => y.OrderBy(x => x.QuoteValue)
.Take(1));
// set ischeapest flag in the database
foreach (var quote in carQuoteResponseDtos)
{
if (cheapestQuotes.Contains(quote))
{
quote.IsCheapest = true;
}
}
await _carQuoteResponseWriter.AddResponse(carQuoteResponseDtos);
return quoteId;
}
private ServiceCarInsuranceQuoteRequest BuildServiceRequest(Insurer insurer, int quoteId, CarQuoteRequestDto request, VehicleDetailsDto vehicle)
{
return new ServiceCarInsuranceQuoteRequest
{
QuoteRequestId = quoteId,
NoClaimsDiscountYears = request.NoClaimsDiscountYears.HasValue ? request.NoClaimsDiscountYears.Value : 0,
VehicleValue = request.VehicleValue.HasValue ? request.VehicleValue.Value : 0,
CurrentRegistration = vehicle.CurrentRegistration,
DriverAge = request.DriverAge.HasValue ? request.DriverAge.Value : 0,
ModelDesc = vehicle.ModelDesc,
IsImport = vehicle.IsImport,
ManufYear = vehicle.ManufYear.HasValue ? vehicle.ManufYear.Value : 0,
Insurer = insurer
};
}