/// <summary>
/// Add delegate of <see cref="NotificationDelegateAsync{TRequest}"/> to the services collection.
/// </summary>
/// <typeparam name="TNotification">The request type</typeparam>
/// <param name="services">The <see cref="IServiceCollection"/> to add the services to.</param>
/// <param name="notificationDelegate">The instance of the publish processing delegate.</param>
/// <param name="servicingOrder">The order of the processing.</param>
/// <returns>The <see cref="IServiceCollection"/> so that additional calls can be chained.</returns>
public static IServiceCollection AddNotificationProcessingHandler <TNotification>(this IServiceCollection services, NotificationDelegateAsync <TNotification> notificationDelegate, ServicingOrder servicingOrder = ServicingOrder.Processing) where TNotification : class
{
if (notificationDelegate == null)
{
throw new ArgumentNullException(nameof(notificationDelegate));
}
services.AddSingleton <INotificationHandler <TNotification> >(new NotificationHandlerProcessingWrapper <TNotification>(notificationDelegate, servicingOrder));
return(services);
}
/// <summary>
/// Constructs the wrapper class.
/// </summary>
/// <param name="notificationDelegate">The processing delegate.</param>
/// <param name="servicingOrder">The processing priority.</param>
public NotificationHandlerProcessingWrapper(NotificationDelegateAsync <TNotification> notificationDelegate, ServicingOrder servicingOrder = ServicingOrder.Processing)
{
_delegate = notificationDelegate ?? throw new ArgumentNullException(nameof(notificationDelegate));
OrderInTheGroup = servicingOrder;
}