yaeb 0.4.0

A simple typed event bus written in pure python

Yet another event bus - yaeb for short

A simple typed event bus written in pure python

Installation

Install yaeb with pip

  pip install yaeb

Usage/Examples

from logging import info

from yaeb.bus import EventBus, NonPersistentEventHandlerRegistry
from yaeb.interface import Event, EventBusInterface, EventHandler


class UserCreated(Event):
    user_id: int

    def __init__(self, user_id: int) -> None:
        self.user_id = user_id


class UserCreatedHandler(EventHandler[UserCreated]):
    def handle_event(self, event: UserCreated, bus: EventBusInterface) -> None:
        info('User with id=%d was created!', event.user_id)


if __name__ == '__main__':
    bus = EventBus(event_handler_registry=NonPersistentEventHandlerRegistry())
    bus.register(event_type=UserCreated, event_handler=UserCreatedHandler())

    bus.emit(UserCreated(user_id=1))  # prints log message with created user id

Roadmap

• Add coroutines support
• Add some kind of multithreading support. Though it can be implemented by handlers themselves 🤔