public async Task Invoke(IncomingLogicalContext context, IBusForHandler bus, Func <Task> next)
{
ExceptionDispatchInfo exceptionDispatchInfo = null;
try
{
await next()
.ConfigureAwait(false);
}
catch (Exception exception)
{
if (ShouldMessageBeDelayed(context))
{
// We can't do async in a catch block, therefore we have to capture the exception!
exceptionDispatchInfo = ExceptionDispatchInfo.Capture(exception);
}
else
{
throw;
}
}
if (exceptionDispatchInfo != null)
{
var message = context.TransportMessage;
var scheduledEnqueueTimeUtc = DateTime.UtcNow
+ TimeSpan.FromSeconds(DelayTimeSpanInSeconds(context));
message.DelayedDeliveryCount++;
await bus.Postpone(context.LogicalMessage.Instance, scheduledEnqueueTimeUtc);
// Don't rethrow, the current message is consumed and a new message is postponed.
}
}
public void Handle(Message message, IBusForHandler bus)
{
bus.Postpone(new PostponedMessage(), ScheduledEnqueTimeUtc).Wait();
}
public async Task Handle(Message message, IBusForHandler bus)
{
await bus.Postpone(new PostponedMessage(), ScheduledEnqueTimeUtc);
}