Struct EventBus 

pub struct EventBus { /* private fields */ }

Registry of handlers, built once by Harness::build from every module’s events(). Cheap to clone (one Arc).

Implementations

impl EventBus

pub fn new() -> Self

An empty bus (a harness with no subscriptions).

pub fn on(self, name: impl Into<EventName>, handler: EventHandler) -> Self

Builds a bus from collected (name, handler) pairs, appending the new pairs after any existing ones (copy-on-write if the bus is already shared). Modules register via Module::events() at Harness::build.

pub fn handlers(&self) -> &[(EventName, EventHandler)]

The registered (name, handler) pairs, in registration order.

pub fn emit_in(&self, scope: &Scope, name: &str, payload: Value)

Runs every handler registered for name through the scope’s defer, in the emitting request’s wait_until. Never fails the request; handler errors are logged with the event name.

Trait Implementations

impl Clone for EventBus

fn clone(&self) -> EventBus

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for EventBus

fn default() -> EventBus

Returns the “default value” for a type.