使用IMessageHandlerContext

Question

我有一个MessageHandler，我需要以不同的间隔将2条消息发送到同一处理程序。我的代码仅将第二条消息发送给BUS。预期结果是第一条消息将在1分钟后发送，第二条消息将在3分钟（2 + 1）之后发送。

public async Task Handle(EmailMessage message, IMessageHandlerContext context)
    {
        switch (message.Action)
        {
            case Constants.Ticket.TicketConstants.Action.SendBothMails:
                DeferNextMessage(message, context);
                break;

            case Constants.Ticket.TicketConstants.Action.SendFirstMail:
                //logic for the first email
                var a = "firstMail";
                break;
            case   Constants.Ticket.TicketConstants.Action.SendSecondMail:
                //logic for the second email
                var b = "secondMail";
                break;
        }
    }

private async void DeferNextMessage(EmailMessage currentMessage, IMessageHandlerContext context)
    {
        await Test1(currentMessage, context).ContinueWith(async t => {
            await Test2(currentMessage, context);
            }); 
    }

 private async Task Test1(EmailMessage currentMessage,  IMessageHandlerContext context)
    {
        var sendFirstMailOptions = new SendOptions();

        sendFirstMailOptions.DelayDeliveryWith(TimeSpan.FromMinutes(2));
        sendFirstMailOptions.RouteToThisEndpoint();

        await context.Send(currentMessage.SpawnFirstEmailMessage(), sendFirstMailOptions).ConfigureAwait(false);

    }

    private async Task Test2(EmailMessage currentMessage, IMessageHandlerContext context)
    {
        var sendSecondMailOptions = new SendOptions();

        sendSecondMailOptions.DelayDeliveryWith(TimeSpan.FromMinutes(2));
        sendSecondMailOptions.RouteToThisEndpoint();

        await context.Send(currentMessage.SpawnSecondEmailMessage(), sendSecondMailOptions).ConfigureAwait(false);
    }