4 releases
0.0.5 | Apr 11, 2022 |
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0.0.4 | Apr 9, 2022 |
0.0.3 | Apr 8, 2022 |
0.0.2 | Apr 6, 2022 |
0.0.1 |
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#1774 in Data structures
8KB
67 lines
Simple Event Bus
Minimal event bus in rust. It provides a basic event bus system that works with (probably) any type.
Example Usage:
use simple_event_bus::{Event, EventBus, Subscriber};
struct ExampleSubscriber {
pub name: String,
}
impl ExampleSubscriber {
pub fn new(name: String) -> ExampleSubscriber {
ExampleSubscriber { name }
}
}
impl Subscriber for ExampleSubscriber {
type Input = String;
fn on_event(&mut self, event: &Event<Self::Input>) {
println!("{} received message: {}", self.name, event.get_data());
}
}
fn main() {
let mut event_bus = EventBus::new();
// We have to manually create and add each subscriber to the event bus.
event_bus.subscribe_listener(ExampleSubscriber::new("Subscriber 1".to_string()));
event_bus.subscribe_listener(ExampleSubscriber::new("Subscriber 2".to_string()));
// We can manually define an event and publish it to the event bus.
event_bus.publish(Event::new("hello".to_string()));
event_bus.publish(Event::new("world".to_string()));
// Alternatively, we can use the From trait to define an event and publish it to the event bus.
// This is as simple as using ".into()" on the data (so long as it matches the event bus's type parameter).
event_bus.publish("!".to_string().into());
// Here we show another example, this time directly from a String instead of using &str.
let test_string = String::from("Hello, World!");
event_bus.publish(test_string.into());
// Runs through each event, and calls each listener's on_event method.
event_bus.run();
}
Feel free to fork this implementation to add your own features!