Struct Notifications 

pub struct Notifications { /* private fields */ }

A registry of event subscribers.

Implementations

impl Notifications

pub fn new() -> Self

pub fn subscribe( &mut self, prefix: &str, handler: impl Fn(&str, &str) + Send + Sync + 'static, )

Subscribe to events whose name starts with prefix (e.g. "sql.").

pub fn instrument(&self, name: &str, payload: &str)

Fire name with payload, invoking every subscriber whose prefix matches.

Trait Implementations

impl Default for Notifications

fn default() -> Notifications

Returns the “default value” for a type.