Struct Lambda 

pub struct Lambda<I, O> { /* private fields */ }

Wraps an async or sync closure so it can act as a Runnable<I, O>.

Implementations

impl<I, O> Lambda<I, O>

where I: Send + 'static, O: Send + 'static,

pub fn from_async<F, Fut>(f: F) -> Self

where F: Fn(I) -> Fut + Send + Sync + 'static, Fut: Future<Output = Result<O>> + Send + 'static,

Build from an async closure that ignores the config.

pub fn from_async_with_config<F, Fut>(f: F) -> Self

where F: Fn(I, RunnableConfig) -> Fut + Send + Sync + 'static, Fut: Future<Output = Result<O>> + Send + 'static,

Build from an async closure that uses the config.

pub fn from_sync<F>(f: F) -> Self

where F: Fn(I) -> Result<O> + Send + Sync + 'static,

Build from a sync closure.

pub fn with_name(self, name: &'static str) -> Self

Override the name reported via Runnable::name.

Trait Implementations

impl<I, O> Clone for Lambda<I, O>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<I, O> Runnable<I, O> for Lambda<I, O>

where I: Send + 'static, O: Send + 'static,

fn invoke<'life0, 'async_trait>( &'life0 self, input: I, config: RunnableConfig, ) -> Pin<Box<dyn Future<Output = Result<O>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait,

One-shot invocation. The hot path.

fn name(&self) -> &str

Friendly name for telemetry / introspection.

fn batch<'life0, 'async_trait>( &'life0 self, inputs: Vec<I>, config: RunnableConfig, ) -> Pin<Box<dyn Future<Output = Result<Vec<O>>> + Send + 'async_trait>>

where I: 'static, O: 'static, Self: Sized + Sync + 'async_trait, 'life0: 'async_trait,

Run multiple inputs in parallel. Defaults to buffer_unordered honouring config.max_concurrency.

fn stream<'life0, 'async_trait>( &'life0 self, input: I, config: RunnableConfig, ) -> Pin<Box<dyn Future<Output = Result<RunnableStream<O>>> + Send + 'async_trait>>

where Self: Sized + Sync + 'async_trait, 'life0: 'async_trait,

Stream the final output (chunks of O). Default emits one item via invoke — non-streaming runnables are correct without override.

fn stream_events<'life0, 'async_trait>( &'life0 self, input: I, config: RunnableConfig, ) -> Pin<Box<dyn Future<Output = Result<EventStream>> + Send + 'async_trait>>

where I: Serialize, O: Serialize, Self: Sized + Sync + 'async_trait, 'life0: 'async_trait,

Stream structured events. Default emits OnStart + OnEnd around an invoke call. Graph engines override to surface per-node events.

fn input_schema(&self) -> Option<Value>

JSON Schema for the input type, if known.

fn output_schema(&self) -> Option<Value>

JSON Schema for the output type, if known.