public IEnumerable <ApplicationEvent> Process(TransactionProcessorCommand command)
{
var processor = _transactionProcessors.FirstOrDefault(x => x.CanProcess(command.Transaction, command.BankOperation));
if (processor == null)
{
throw new ArgumentException("Can't process operation. No processor found.", "command");
}
return(processor.Process(command));
}
private IEnumerable<ApplicationEvent> OnFatalError(TransactionProcessorCommand command, Exception exception)
{
command.Transaction.Fail(Messages.UnknownTransactionError);
var bankOperationId = command.BankOperation == null ? null : (long?)command.BankOperation.Id;
var operation = command.BankOperation == null
? null
: command.BankOperation.ToModel<BankOperation, BankOperationModel>();
var transaction = command.Transaction.ToModel<TransactionModel>();
var events = new List<ApplicationEvent>()
{
new TransactionProcessedEvent(command.OperationId, transaction, bankOperationId)
};
if (operation != null)
{
events.Add(new OperationProgressEvent(command.OperationId, operation));
}
return events;
}
public IEnumerable<ApplicationEvent> Process(TransactionProcessorCommand command)
{
var policy = _policies.FirstOrDefault(x => x.AppliesTo(command.Transaction, command.BankOperation));
if (command.Transaction.Status != ProcessStatus.Pending)
{
_logger.Warn("Transaction #{0} was passed to processor in invalid state.", command.Transaction.Id);
return Enumerable.Empty<ApplicationEvent>();
}
if (policy == null)
{
throw new ArgumentException("Can't process transaction. No policy found.", "command");
}
var dynamicPolicy = (dynamic) policy;
try
{
return Process(dynamicPolicy, command);
}
catch (Exception ex)
{
return OnFatalError(command, ex);
}
}
private IEnumerable<ApplicationEvent> Process(CompletePolicy policy, TransactionProcessorCommand command)
{
command.Transaction.Complete(policy.GetPostDateUtc(command.Transaction, command.BankOperation));
var bankOperationId = command.BankOperation == null ? null : (long?)command.BankOperation.Id;
var operation = command.BankOperation == null
? null
: command.BankOperation.ToModel<BankOperation, BankOperationModel>();
var transaction = command.Transaction.ToModel<TransactionModel>();
var events = new List<ApplicationEvent>()
{
new TransactionProcessedEvent(command.OperationId, transaction, bankOperationId)
};
if (operation != null)
{
events.Add(new OperationProgressEvent(command.OperationId, operation));
}
return events;
}
private IEnumerable<ApplicationEvent> Process(PostponePolicy policy, TransactionProcessorCommand command)
{
var transactionModel = command.Transaction.ToModel<TransactionModel>();
var operationId = command.BankOperation == null ? null : (long?)command.BankOperation.Id;
var @event = new TransactionProgressEvent(command.OperationId, transactionModel, operationId);
return new List<ApplicationEvent>()
{
new PostponedEvent(@event, policy.GetScheduledDateUtc(command.Transaction, command.BankOperation))
};
}
