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0b0f2d30ab
* sort imports * update --------- Co-authored-by: Brandon Hancock (bhancock_ai) <109994880+bhancockio@users.noreply.github.com> Co-authored-by: Eduardo Chiarotti <dudumelgaco@hotmail.com>
45 lines
1.1 KiB
Python
45 lines
1.1 KiB
Python
from functools import wraps
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from typing import Any, Callable, Dict, Generic, List, Type, TypeVar
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from pydantic import BaseModel
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T = TypeVar("T")
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EVT = TypeVar("EVT", bound=BaseModel)
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class Emitter(Generic[T, EVT]):
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_listeners: Dict[Type[EVT], List[Callable]] = {}
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def on(self, event_type: Type[EVT]):
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def decorator(func: Callable):
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@wraps(func)
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def wrapper(*args, **kwargs):
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return func(*args, **kwargs)
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self._listeners.setdefault(event_type, []).append(wrapper)
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return wrapper
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return decorator
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def emit(self, source: T, event: EVT) -> None:
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event_type = type(event)
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for func in self._listeners.get(event_type, []):
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func(source, event)
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default_emitter = Emitter[Any, BaseModel]()
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def emit(source: Any, event: BaseModel, raise_on_error: bool = False) -> None:
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try:
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default_emitter.emit(source, event)
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except Exception as e:
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if raise_on_error:
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raise e
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else:
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print(f"Error emitting event: {e}")
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def on(event_type: Type[BaseModel]) -> Callable:
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return default_emitter.on(event_type)
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