public void Accrue(RentalAgreement agreement)
{
// defensive programming
if(agreement == null) throw new ArgumentNullException("agreement");
// logging
Console.WriteLine("Accrue: {0}", DateTime.Now);
Console.WriteLine("Customer: {0}", agreement.Customer.Id);
Console.WriteLine("Vehicle: {0}", agreement.Vehicle.Id);
// exception handling
_exceptionHandler.Wrapper(() =>
{
_transactionManager.Wrapper(() =>
{
var rentalTimeSpan =
(agreement.EndDate.Subtract(agreement.StartDate));
var numberOfDays = (int) Math.Floor(rentalTimeSpan.TotalDays);
var pointsPerDay = 1;
if (agreement.Vehicle.Size >= Size.Luxury)
pointsPerDay = 2;
var points = numberOfDays*pointsPerDay;
_loyaltyDataService.AddPoints(agreement.Customer.Id, points);
// logging
Console.WriteLine("Accrue complete: {0}", DateTime.Now);
});
});
}
public void Accrue(RentalAgreement agreement)
{
// defensive programming
if(agreement == null) throw new ArgumentNullException("agreement");
// logging
Console.WriteLine("Accrue: {0}", DateTime.Now);
Console.WriteLine("Customer: {0}", agreement.Customer.Id);
Console.WriteLine("Vehicle: {0}", agreement.Vehicle.Id);
// exception handling
try
{
// start new transaction
using (var scope = new TransactionScope())
{
// retry up to three times
var retries = 3;
var succeeded = false;
while (!succeeded)
{
try
{
var rentalTime =
(agreement.EndDate.Subtract(
agreement.StartDate));
var days = (int) Math.Floor(rentalTime.TotalDays);
var pointsPerDay = 1;
if (agreement.Vehicle.Size >= Size.Luxury)
pointsPerDay = 2;
var pts = days * pointsPerDay;
_dataService.AddPoints(agreement.Customer.Id, pts);
// complete transaction
scope.Complete();
succeeded = true;
}
catch
{
// don't re-throw until the
// retry limit is reached
if(retries >=0)
retries--;
else
throw;
}
}
}
}
catch (Exception ex)
{
if (!Exceptions.Handle(ex))
throw;
}
// logging
Console.WriteLine("Accrue complete: {0}", DateTime.Now);
}
public void Accrue(RentalAgreement agreement)
{
var rentalTime =
(agreement.EndDate.Subtract(
agreement.StartDate));
var days = (int) Math.Floor(rentalTime.TotalDays);
var pointsPerDay = 1;
if (agreement.Vehicle.Size >= Size.Luxury)
pointsPerDay = 2;
var pts = days * pointsPerDay;
_dataService.AddPoints(agreement.Customer.Id, pts);
}
static void SimulateAddingPoints(ILoyaltyAccrualService service)
{
var rentalAgreement = new RentalAgreement
{
Customer = new Customer
{
Id = Guid.NewGuid(),
Name = "Matthew D. Groves",
DateOfBirth = new DateTime(1980, 2, 10),
DriversLicense = "RR123456"
},
Vehicle = new Vehicle
{
Id = Guid.NewGuid(),
Make = "Honda",
Model = "Accord",
Size = Size.Compact,
Vin = "1HABC123"
},
StartDate = DateTime.Now.AddDays(-3),
EndDate = DateTime.Now
};
service.Accrue(rentalAgreement);
}
