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StreamChunk

Enum StreamChunk 

Source
pub enum StreamChunk {
    TextDelta(String),
    ThinkingDelta(String),
    ToolLifecycle {
        phase: ToolPhase,
        call_id: String,
        tool_name: String,
    },
    ToolOutput {
        call_id: String,
        tool_name: String,
        content: String,
        is_error: bool,
        duration: Duration,
    },
}
Expand description

数据面事件 — 高频、数据透传。

统一流式协议,所有 Node(LLM、Tool、MCP、Workflow)共享。

Tool 并发 emit 协议:

  • Start 保证顺序 — 严格按照 ToolCall 顺序发射(A, B, C)
  • End 允许乱序 — 并发执行完成后按实际顺序发射(B, A, C),通过 call_id 关联

Variants§

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TextDelta(String)

文本输出(LLM 生成的文本 token)

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ThinkingDelta(String)

思考内容(LLM 的 reasoning/thinking block)

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ToolLifecycle

工具生命周期事件(Queued / Started / Finished)

Fields

§call_id: String
§tool_name: String
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ToolOutput

工具执行结果(展示用,content 为 String,前端直接展示)

与 State Plane 的 Message::ToolResult 分离。 State 保存完整 Message(含 content_blocks, metadata, raw_response)。 此变体仅用于实时展示。

Fields

§call_id: String
§tool_name: String
§content: String
§is_error: bool
§duration: Duration

Trait Implementations§

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impl Clone for StreamChunk

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fn clone(&self) -> StreamChunk

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for StreamChunk

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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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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impl<T> Instrument for T

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more