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EventBus

swf_runtime::events

Trait EventBus 

Source 
pub trait EventBus: Send + Sync {
    // Required methods
    fn publish<'life0, 'async_trait>(
        &'life0 self,
        event: CloudEvent,
    ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn subscribe<'life0, 'life1, 'async_trait>(
        &'life0 self,
        event_type: &'life1 str,
    ) -> Pin<Box<dyn Future<Output = EventSubscription> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
    fn subscribe_all<'life0, 'async_trait>(
        &'life0 self,
    ) -> Pin<Box<dyn Future<Output = EventSubscription> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn unsubscribe<'life0, 'async_trait>(
        &'life0 self,
        subscription: EventSubscription,
    ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
    fn recv<'life0, 'life1, 'async_trait>(
        &'life0 self,
        subscription: &'life1 mut EventSubscription,
    ) -> Pin<Box<dyn Future<Output = Option<CloudEvent>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait,
             'life1: 'async_trait;
}
Expand description

Trait for event bus implementations

Provides publish/subscribe functionality for workflow events. Used by emit tasks to publish and listen tasks to consume events.

Required Methods§

Source

fn publish<'life0, 'async_trait>( &'life0 self, event: CloudEvent, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Publish an event to the bus

Source

fn subscribe<'life0, 'life1, 'async_trait>( &'life0 self, event_type: &'life1 str, ) -> Pin<Box<dyn Future<Output = EventSubscription> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Subscribe to events matching a specific type. The subscription starts receiving events from the point of subscription.

Source

fn subscribe_all<'life0, 'async_trait>( &'life0 self, ) -> Pin<Box<dyn Future<Output = EventSubscription> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Subscribe to all events

Source

fn unsubscribe<'life0, 'async_trait>( &'life0 self, subscription: EventSubscription, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Unsubscribe a previously registered subscription

Source

fn recv<'life0, 'life1, 'async_trait>( &'life0 self, subscription: &'life1 mut EventSubscription, ) -> Pin<Box<dyn Future<Output = Option<CloudEvent>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Receive the next event matching a subscription (blocking wait)

Implementors§