Struct NewStep 

pub struct NewStep<'engine, 'a, S: EngineSpec, T> { /* private fields */ }

A new step that hasn’t been registered by an execution engine yet.

Created by UpdateEngine::new_step or ComponentRegistrar::new_step.

Implementations

impl<'a, S: EngineSpec, T> NewStep<'_, 'a, S, T>

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

where F: FnOnce(MetadataContext<S>) -> Fut + Send + 'a, Fut: Future<Output = S::StepMetadata> + Send + 'a,

Adds a metadata-generating function to the step.

This function is expected to produce S::StepMetadata. The metadata function must be infallible, and will often be synchronous code.

pub fn register(self) -> StepHandle<T, S>

Registers the step with the engine.

Trait Implementations

impl<'engine, 'a, S: Debug + EngineSpec, T: Debug> Debug for NewStep<'engine, 'a, S, T>

where S::Component: Debug, S::StepId: Debug,

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

Formats the value using the given formatter.