public static IObservable <T> All <T>(this IObservableMessageBus bus)
where T : IMessage
{
return(((ObservableMessageBus)bus)
.messageSubject
.Where(m => m is T)
.Select(m => (T)m));
}
public static IObservable <T> SubscribeTo <T>(this IObservableMessageBus bus)
{
return(((ObservableMessageBus)bus)
.messageSubject
.Where(m => m is T || m.Body is T)
.Select(m => typeof(IMessage).GetTypeInfo().IsAssignableFrom(typeof(T).GetTypeInfo()) ?
(T)m :
(T)m.Body
));
}
public static IDisposable SubscribeToAndUpdate <TMessage, TEntity>(this IObservableMessageBus source, Action <TEntity, TMessage> onNext, IEventRepository repo)
where TMessage : class, IMessage <IEventSourcedEntityCommand>
where TEntity : class, IEventSourcedEntity
{
async Task a(TMessage obj)
{
var ent = await repo.GetAsync <TEntity>(obj.Body.Id);
onNext(ent, obj);
await repo.SaveAsync(ent);
}
return(BusExtensions.SubscribeTo <TMessage>(source)
.Select(x => Observable.FromAsync(() => a(x)))
.Concat()
.Subscribe());
}
