Trait Handler 

pub trait Handler<I, O>: Send + Sync
where
    I: Send + 'static,
    O: Send + Clone + 'static,
{
    // Required method
    fn handle<'life0, 'async_trait>(
        &'life0 self,
        task: I,
        emit: Sender<Event<O>>,
        cancel: CancellationToken,
    ) -> Pin<Box<dyn Future<Output = AppResult<O>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
}

Core trait for worker task handlers.

Implementors receive a task I, an event sender for streaming intermediate results, and a cancellation token for cooperative cancellation.

Required Methods

fn handle<'life0, 'async_trait>( &'life0 self, task: I, emit: Sender<Event<O>>, cancel: CancellationToken, ) -> Pin<Box<dyn Future<Output = AppResult<O>> + Send + 'async_trait>>

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

Execute the task, emitting intermediate events via emit and honouring cancellation requests via cancel.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors