public async Task <Result <string> > GetNextSponsoringCode(CancellationToken token)
{
var table = _cloudStorageAccount.CreateCloudTableClient()
.GetTableReference(_storageOptions.Tables.SponsoringCodes);
await table.CreateIfNotExistsAsync(token);
var opts = new Powells.CouponCode.Options
{
PartLength = _sponsoringOptions.CodeLength, Parts = _sponsoringOptions.CodeParts
};
var ccb = new CouponCodeBuilder();
var badWords = ccb.BadWordsList;
var code = "";
var concurrentUpdateError = false;
var retry = 0;
do
{
try
{
code = ccb.Generate(opts);
var tableResults =
await table.ExecuteAsync(TableOperation.Retrieve <SponsoringTableEntity>("code", code), token);
if ((SponsoringTableEntity)tableResults?.Result != null)
{
concurrentUpdateError = true;
}
else
{
await table.ExecuteAsync(TableOperation.Insert(new SponsoringTableEntity
{
PartitionKey = "code",
RowKey = code,
}), token);
}
concurrentUpdateError = false;
}
catch (StorageException e)
{
retry++;
if (retry <= 10 && (e.RequestInformation.HttpStatusCode == 412 ||
e.RequestInformation.HttpStatusCode == 409))
{
concurrentUpdateError = true;
}
else
{
throw;
}
}
} while (concurrentUpdateError);
return(Success <string>(code));
}
//Setup Coupon Generator Options
public CouponController()
{
_opts = new Options
{
Parts = 2,
PartLength = 4
};
//Initiating Coupon Code Builder
_ccb = new CouponCodeBuilder();
}