Struct NoopEventListener 

pub struct NoopEventListener;

Listener that intentionally ignores every event.

Useful as a default in hosts where event observation is optional and in tests that need to satisfy an EventListener dependency.

Trait Implementations

impl Clone for NoopEventListener

fn clone(&self) -> NoopEventListener

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NoopEventListener

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

Formats the value using the given formatter.

impl Default for NoopEventListener

fn default() -> NoopEventListener

Returns the “default value” for a type.

impl EventListener for NoopEventListener

fn on_event<'life0, 'life1, 'async_trait>( &'life0 self, _event: &'life1 Event, ) -> Pin<Box<dyn Future<Output = ()> + Send + 'async_trait>>

where 'life0: 'async_trait, 'life1: 'async_trait, NoopEventListener: 'async_trait,

Called for every event, durable and ephemeral, in emission order.

fn name(&self) -> &'static str

Human-readable name for diagnostics.

fn event_types(&self) -> Option<Vec<&'static str>>

Event types this listener wants to receive.