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Copy pathOrderSaga.cs
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82 lines (70 loc) · 2.67 KB
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using Core.Commands;
using Core.Events;
using Core.Ids;
using Orders.Orders.CancellingOrder;
using Orders.Orders.CompletingOrder;
using Orders.Orders.InitializingOrder;
using Orders.Orders.RecordingOrderPayment;
using Orders.Payments.DiscardingPayment;
using Orders.Payments.FinalizingPayment;
using Orders.Payments.RequestingPayment;
using Orders.Products;
using Orders.Shipments.OutOfStockProduct;
using Orders.Shipments.SendingPackage;
using Orders.ShoppingCarts.FinalizingCart;
namespace Orders.Orders;
public class OrderSaga:
IEventHandler<CartFinalized>,
IEventHandler<OrderInitialized>,
IEventHandler<PaymentFinalized>,
IEventHandler<PackageWasSent>,
IEventHandler<ProductWasOutOfStock>,
IEventHandler<OrderCancelled>,
IEventHandler<OrderPaymentRecorded>
{
private readonly IIdGenerator idGenerator;
private readonly ICommandBus commandBus;
public OrderSaga(IIdGenerator idGenerator, ICommandBus commandBus)
{
this.idGenerator = idGenerator;
this.commandBus = commandBus;
}
// Happy path
public Task Handle(CartFinalized @event, CancellationToken cancellationToken)
{
var orderId = idGenerator.New();
return commandBus.Send(InitializeOrder.Create(orderId, @event.ClientId, @event.ProductItems, @event.TotalPrice));
}
public Task Handle(OrderInitialized @event, CancellationToken cancellationToken)
{
return commandBus.Send(RequestPayment.Create(@event.OrderId, @event.TotalPrice));
}
public async Task Handle(PaymentFinalized @event, CancellationToken cancellationToken)
{
await commandBus.Send(RecordOrderPayment.Create(@event.OrderId, @event.PaymentId, @event.FinalizedAt));
}
public Task Handle(OrderPaymentRecorded @event, CancellationToken cancellationToken)
{
return commandBus.Send(
SendPackage.Create(
@event.OrderId,
@event.ProductItems.Select(pi => new ProductItem(pi.ProductId, pi.Quantity)).ToList()
)
);
}
public Task Handle(PackageWasSent @event, CancellationToken cancellationToken)
{
return commandBus.Send(CompleteOrder.Create(@event.OrderId));
}
// Compensation
public Task Handle(ProductWasOutOfStock @event, CancellationToken cancellationToken)
{
return commandBus.Send(CancelOrder.Create(@event.OrderId, (OrderCancellationReason) OrderCancellationReason.ProductWasOutOfStock));
}
public Task Handle(OrderCancelled @event, CancellationToken cancellationToken)
{
if (!@event.PaymentId.HasValue)
return Task.CompletedTask;
return commandBus.Send(DiscardPayment.Create(@event.PaymentId.Value));
}
}