public void Redeem(Invoice invoice, int numberOfDays)
{
// defensive programming
if (invoice == null)
{
throw new ArgumentNullException(nameof(invoice));
}
if (numberOfDays <= 0)
{
throw new ArgumentException("", nameof(numberOfDays));
}
// logging
Console.WriteLine("Redeem: {0}", DateTime.Now);
Console.WriteLine("Invoice: {0}", invoice.Id);
_exceptionHandler.Wrapper(() =>
{
_transactionManager.Wrapper(() =>
{
var pointsPerDay = 10;
if (invoice.Vehicle.Size >= Size.Luxury)
{
pointsPerDay = 15;
}
var points = numberOfDays * pointsPerDay;
_loyaltyDataService.SubtractPoints(invoice.Customer.Id, points);
invoice.Discount = numberOfDays * invoice.CostPerDay;
// logging
Console.WriteLine("Redeem complete: {0}", DateTime.Now);
});
});
}
public void Redeem(Invoice invoice, int numberOfDays)
{
var pointsPerDay = 10;
if (invoice.Vehicle.Size >= Size.Luxury)
{
pointsPerDay = 15;
}
var points = numberOfDays * pointsPerDay;
_dataService.SubtractPoints(invoice.Customer.Id, points);
invoice.Discount = numberOfDays * invoice.CostPerDay;
}
public void Redeem(Invoice invoice, int numberOfDays)
{
// defensive programming
if (invoice == null)
{
throw new ArgumentNullException("invoice");
}
if (numberOfDays <= 0)
{
throw new ArgumentException("", "numberOfDays");
}
// logging
Console.WriteLine("Redeem: {0}", DateTime.Now);
Console.WriteLine("Invoice: {0}", invoice.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 pointsPerDay = 10;
if (invoice.Vehicle.Size >= Size.Luxury)
{
pointsPerDay = 15;
}
var points = numberOfDays * pointsPerDay;
_dataService.SubtractPoints(invoice.Customer.Id, points);
invoice.Discount = numberOfDays * invoice.CostPerDay;
// complete transaction
scope.Complete();
succeeded = true;
// logging
Console.WriteLine("Redeem complete: {0}", DateTime.Now);
}
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;
}
}
}
public void Redeem(Invoice invoice, int numberOfDays)
{
// Add Defensive Programming
if (invoice == null)
{
throw new ArgumentNullException(nameof(invoice));
}
if (numberOfDays <= 0)
{
throw new ArgumentException(nameof(numberOfDays));
}
// Add Logging
Console.WriteLine($"Redeem : {DateTime.Now}");
Console.WriteLine($"Invoice: {invoice.Id}");
// Add More exception Handling
try {
// Add Transaction
using (var scope = new TransactionScope()) {
// Add Retry logic
var retries = 3;
var succeded = false;
while (!succeded)
{
try {
// Business logic
var pointsPerDay = 10;
if (invoice.Vehicule.Size >= Size.Luxury)
{
pointsPerDay = 15;
}
var points = numberOfDays * pointsPerDay;
_loyaltyDataService.SubtractPoints(invoice.Customer.Id, points);
invoice.Discount = numberOfDays * invoice.CostPerDay;
// Business logic
// Complete transaction
scope.Complete();
succeded = true;
// Add Logging
Console.WriteLine($"Redeem complete: {DateTime.Now}");
} catch {
// Don't rethrow until the limit is reached
if (retries >= 0)
{
retries--;
}
else
{
throw;
}
}
}
}
} catch (Exception ex) {
// Some exception handling logic. The Book code doesn't work, Something missing?
//if (!ExceptionHandler.Handle(ex))
// throw;
}
}