在自动命名状态机中结合到何时 [英] Combine to Whens in Automatonymous state machine

问题描述

我正在从MassTransit状态机传奇发出请求，并等待答复.

I am making a Request from MassTransit state machine saga and wait for reply.

但是可能会出现两个错误:

But there could be two errors coming back to me:

• MyRequest.TimeoutExpired
• MyRequest.Faulted

我不在乎请求没有满足的条件，我希望两种情况都导致发布错误消息.

I don't care on which conditions the request was not fulfilled, I want both situations to result in an error message to be published.

但是，我找不到任何将两个结果与或条件结合起来的方法，因此我可以为两个结果提供一个处理案例，而不必复制粘贴我的代码.

However, I could not find any way to combine two outcomes with or condition, so I can have one handling case for both outcomes and not copy-paste my code.

推荐答案

在这种情况下，您应该创建一个自定义活动(高级的，可能不是必需的)，或者只创建一个从两个While()条件中调用的方法，这样您就可以在语句之间重用行为.

In this case, you should either create a custom activity (advanced, probably not necessary) or just create a method that is called from both When() conditions, so that you can reuse the behavior between statements.

Task PublishEvent(BehaviorContext<TInstance> context)
{
    var consumeContext = context.GetPayload<ConsumeContext>();

    return consumeContext.Publish(new MyEvent(...));
}

{
    During(MyRequest.Pending,
        When(MyRequest.Completed)
            .ThenAsync(PublishEvent),
        When(MyRequest.Faulted)
            .ThenAsync(PublishEvent));
}

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