protected override void HandleTransfer(CAP_CQRSEntities entities, TransferMessage transfer)
{
Console.WriteLine(String.Format("Decrease {0}.", transfer.FromAccount));
AccountBalance from = GetAccountEntity(transfer.FromAccount, entities);
from.Balance -= transfer.Amount;
}
protected override void HandleTransfer(CAP_CQRSEntities entities, TransferMessage transfer)
{
Console.WriteLine(String.Format("Increase {0}.", transfer.ToAccount));
AccountBalance to = GetAccountEntity(transfer.ToAccount, entities);
to.Balance += transfer.Amount;
}
// TODO 2d: Command doesn't update current state.
public void Transfer(string fromAccount, string toAccount, decimal amount)
{
try
{
using (CAP_CQRSEntities entities = new CAP_CQRSEntities())
{
using (var tx = new TransactionScope())
{
AccountBalance from = GetAccountEntity(fromAccount, entities);
if (from.Balance < amount)
throw new ApplicationException("Insufficient funds.");
// INSERT
entities.AddToTransfers(new Transfer()
{
From = fromAccount,
To = toAccount,
Amount = amount
});
// PUBLISH
TransferMessage message = new TransferMessage()
{
FromAccount = fromAccount,
ToAccount = toAccount,
Amount = amount
};
using (var queue = new MessageQueue(IncreaseQueueName))
{
queue.Send(message, MessageQueueTransactionType.Automatic);
}
using (var queue = new MessageQueue(DecreaseQueueName))
{
queue.Send(message, MessageQueueTransactionType.Automatic);
}
entities.SaveChanges();
tx.Complete();
}
}
}
catch (Exception ex)
{
throw new FaultException(ex.Message);
}
}
protected abstract void HandleTransfer(CAP_CQRSEntities entities, TransferMessage transfer);
