private static Task InvokeHandlerAsync(EventHandlerDescriptor descriptor, EventHandlerRequest request, CancellationToken cancellationToken)
{
Contract.Requires(descriptor != null);
Contract.Requires(request != null);
IEventHandler handler = descriptor.CreateHandler(request);
if (handler == null)
{
throw CreateHandlerNotFoundException(descriptor);
}
request.RegisterForDispose(handler, true);
EventHandlerContext context = new EventHandlerContext(request, descriptor);
context.Handler = handler;
handler.EventContext = context;
EventFilterGrouping filterGrouping = descriptor.GetFilterGrouping();
ServicesContainer servicesContainer = request.Configuration.Services;
IEventHandlerResult result = new EventHandlerFilterResult(context, servicesContainer, filterGrouping.EventHandlerFilters);
return(result.ExecuteAsync(cancellationToken));
}
