Skeleton ready

kernel/event/listener.py

@@ -0,0 +1,16 @@
+from typing import Generic, TypeVar
+from abc import ABC, abstractmethod
+from punq import Container
+
+T = TypeVar('T')
+
+
+class Listener(ABC, Generic[T]):
+    _container: Container
+
+    def __init__(self, container: Container) -> None:
+        self._container = container
+
+    @abstractmethod
+    async def handle(self, event: str, payload: T) -> None:
+        pass

kernel/event/registrar.py

@@ -0,0 +1,25 @@
+from punq import Container
+from typing import TypeVar
+from pyee import EventEmitter
+
+from kernel.event.listener import Listener
+
+T = TypeVar('T')
+
+
+class Registrar:
+    _container: Container
+
+    def __init__(self, container: Container) -> None:
+        self._container = container
+
+    def add_event_listener(
+        self,
+        event: str,
+        listener: type[Listener[T]]
+    ) -> None:
+        async def callback(payload: T) -> None:
+            listener_instance = listener(self._container)
+            await listener_instance.handle(event, payload)
+
+        self._container.resolve(EventEmitter).on(event, callback)