计划任务应放在哪一层? [英] Which layer should scheduled task be put?

问题描述

我正在尝试使用分层体系结构来实现DDD应用程序.我有:

I'm trying to implement DDD application with layered architecture. I have:

• 基础结构层-实现应用程序中技术特定部分的层.
• 域层-包含域模型的层.
• 应用层-包含与领域模型进行交互的干扰的层.
• 与接口层-从外部接收事件的层.

经典的3层(+基础结构)体系结构非常清晰.但是我的应用程序不是很经典.除了UI，我还安排了应定期运行的任务.我考虑过将此类任务放入接口层，因为这些任务实际上处理的是诸如UI之类的事件.但是有一个问题，我无法决定应该放置哪个调度程序来触发计划任务的事件.

The classic 3 layer (+ infrastructure) architecture is quite clear. But my application isn't very classic. Beside UI I have scheduled task which should be ran periodically. I thought about putting such tasks into interfaces layer, because these task actually handle events like UI. But there is a problem, I can't make decision which layer I should put an scheduler which fire events for scheduled tasks.

我画草图

应该将调度程序对象放在哪一层?或者可能是使用内部事件生成器设计应用程序的另一种方式.

Which layer should I put the scheduler object? Or may be where is another way to design application with internal event generator.

推荐答案

对我来说，调度程序是任务执行程序的宿主(与JSP容器是UI的宿主一样).我会将其建模为一个外部实体，并将其实现为另一个基础结构项目.

To me, scheduler is a host for task executor (in the same way as your JSP container is a host for you UI). I would model it as an external entity and implement it as another infrastructure project.

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