public async Task <CompensationResult> Compensate(CompensateContext <AllocateInventoryLog> context)
{
await context.Publish <AllocationReleaseRequested>(new
{
AllocationId = context.Log.AllocationId,
Reason = "Order Faulted"
});
return(context.Compensated());
}
public async Task <CompensationResult> Compensate(CompensateContext <BookFlightLogs> context)
{
await Task.Delay(BookItem.LongDelay);
var protocols = new IHubProtocol[] { new JsonHubProtocol() };
await context.Publish <All <ChatHub> >(new
{
Messages = protocols.ToProtocolDictionary("ReceiveMessage", new object[] { "message", $"Flight {context.Log.Message} was canceled!" })
});
return(context.Compensated());
}
public async Task <CompensationResult> Compensate(CompensateContext <IBookHotelActivityLog> context)
{
this._logger.LogWarning($"Compensating {nameof(BookHotelActivity)} activity" +
$"\r\nCompensation log: {JsonConvert.SerializeObject(context.Log)}");
await context.Publish <ICancelHotelBooking>(new
{
context.Log.BookingId
});
return(context.Compensated());
}
public async Task <CompensationResult> Compensate(CompensateContext <AllocateInventoryLog> context)
{
// 지금까지 해오던 작업을 Rollback 하는 시나리오가 발생.
_logger.LogWarning("AllocateInventory 작업을 되돌립니다...");
// 현 Activity(=Allocate Inventory, 재고할당)수준에서 Rollback 할 수 있는 처리가 여기 들어감
// 예를 들면, "재고할당을 취소" 하는 요청을 보내는 작업...
await context.Publish <AllocationReleaseRequested>(new
{
AllocationId = context.Log.AllocationId,
Reason = "주문 오류 발생"
});
// 이 Activity 는 Rollback을 위한 작업이 완료되었음을 반환.
// ("Compenste(보상)" 이라는 의미는 어떤 변경에 대하여 없었던것으로
// "보상"하는 방식으로 Masstransit.Courier 가 동작하기 때문)
return(context.Compensated());
}
public async Task <CompensationResult> Compensate(CompensateContext <GeraLancamentoLog> context)
{
using (var scope = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled))
{
var transacaoOriginal = Repositorio.PegaTransacao(context.Log.IdLancamento);
if (transacaoOriginal == null)
{
return(context.Compensated());
}
var novoSaldo = Repositorio.AdicionaTransacao(
new Transacao(Guid.NewGuid(),
DateTime.Now,
"Estorno " + transacaoOriginal.Id,
transacaoOriginal.Conta, -transacaoOriginal.Valor));
await context.Publish(new SaldoAtualizado(transacaoOriginal.Conta, novoSaldo));
scope.Complete();
return(context.Compensated());
}
}
Task IPublishEndpoint.Publish <T>(T message, CancellationToken cancellationToken)
{
return(_context.Publish(message, cancellationToken));
}