voice-gateway-service/src/core/__init__.py

from functools import wraps

def with_app_context(func):
    @wraps(func)
    def wrapper(self, *args, **kwargs):
        with self.app.app_context():
            return func(self, *args, **kwargs)
    return wrapper

def singleton(cls):
    _instance = {}

    def inner():
        if cls not in _instance:
            _instance[cls] = cls()
        return _instance[cls]

    return inner

def singleton_keys(cls):
    _instances = {}

    def wrapper(*args, **kwargs):
        if cls not in _instances:
            _instances[cls] = cls(*args, **kwargs)  # Pass the arguments to the class constructor
        return _instances[cls]

    return wrapper