Struct ConditionalTask 

pub struct ConditionalTask { /* private fields */ }

A branching task.

It evaluates an async predicate and records the chosen branch label on the context blackboard under the key {id}.branch. Downstream tasks can read that value to decide whether to do real work or short-circuit, implementing conditional control flow within an otherwise static DAG.

The task’s own output is {"taken": <bool>, "branch": <label>}.

Implementations

impl ConditionalTask

pub fn new<F, Fut>( id: impl Into<String>, on_true: impl Into<String>, on_false: impl Into<String>, predicate: F, ) -> Self

where F: Fn(Arc<Context>) -> Fut + Send + Sync + 'static, Fut: Future<Output = Result<bool, TaskError>> + Send + 'static,

Create a conditional with the given async predicate.

on_true/on_false are the branch labels published to the blackboard.

pub fn with_deps<I, S>(self, deps: I) -> Self

where I: IntoIterator<Item = S>, S: Into<String>,

Declare dependencies.

pub fn with_priority(self, priority: u8) -> Self

Set scheduling priority.

Trait Implementations

impl Task for ConditionalTask

fn id(&self) -> &str

Stable, unique identifier for this task within a DAG.

fn dependencies(&self) -> Vec<String>

Ids of tasks that must complete successfully before this one runs.

fn priority(&self) -> u8

Scheduling priority; higher values are scheduled first among ready tasks.

fn execute<'life0, 'async_trait>( &'life0 self, ctx: Arc<Context>, ) -> Pin<Box<dyn Future<Output = Result<TaskOutput, TaskError>> + Send + 'async_trait>>

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

Execute the task.