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SessionCheckpointSink

Struct SessionCheckpointSink 

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pub struct SessionCheckpointSink<'a, S: WorkflowState = State>
where S::Checkpoint: Debug,
{ /* private fields */ }
Expand description

Session 的 Checkpoint Sink — 将 checkpoint 事件写入 FrameStack。

这是 CheckpointSink SPI 的实现之一。Engine 通过借用 &dyn CheckpointSink<S> 通知到达恢复边界,SessionCheckpointSink 负责将 Frame 推入 FrameStack。

§设计原则

Engine 不知道 FrameStack 的存在,只调用 sink.on_checkpoint(&state, &frame_info)。 SessionCheckpointSink 是适配器,将通用的 checkpoint 事件转换为 FrameStack 操作。

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impl<'a, S: WorkflowState> SessionCheckpointSink<'a, S>
where S::Checkpoint: Debug,

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pub fn new( frame_stack: &'a mut FrameStack<S>, graph_name: impl Into<String>, ) -> Self

创建 SessionCheckpointSink,绑定到 FrameStack。

Trait Implementations§

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impl<S: WorkflowState> CheckpointSink<S> for SessionCheckpointSink<'_, S>
where S::Checkpoint: Debug + Sync,

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fn on_checkpoint(&mut self, state: &S, frame: &FrameInfo)

节点完成,State 已 commit。 Read more

Auto Trait Implementations§

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impl<'a, S = State> !UnwindSafe for SessionCheckpointSink<'a, S>

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impl<'a, S> Freeze for SessionCheckpointSink<'a, S>

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impl<'a, S> RefUnwindSafe for SessionCheckpointSink<'a, S>

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impl<'a, S> Send for SessionCheckpointSink<'a, S>

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impl<'a, S> Sync for SessionCheckpointSink<'a, S>
where <S as WorkflowState>::Checkpoint: Sync,

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impl<'a, S> Unpin for SessionCheckpointSink<'a, S>

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impl<'a, S> UnsafeUnpin for SessionCheckpointSink<'a, S>

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impl<T> Any for T
where T: 'static + ?Sized,

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Gets the TypeId of self. Read more
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where T: ?Sized,

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impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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fn instrument(self, span: Span) -> Instrumented<Self>

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where U: From<T>,

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type Error = Infallible

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impl<T, U> TryInto<U> for T
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type Error = <U as TryFrom<T>>::Error

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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

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