Function _wrap_gen_lifespan_context

fastapi/routing.py:208–222

Wrap a generator-based lifespan context into an async context manager. This is vendored from Starlette to avoid importing private symbols.

(
    lifespan_context: Callable[[Any], Generator[Any, Any, Any]],
)

# Vendored from starlette.routing to avoid importing private symbols
def _wrap_gen_lifespan_context(
    lifespan_context: Callable[[Any], Generator[Any, Any, Any]],
) -> Callable[[Any], AbstractAsyncContextManager[Any]]:
    """
    Wrap a generator-based lifespan context into an async context manager.

    This is vendored from Starlette to avoid importing private symbols.
    """
    cmgr = contextlib.contextmanager(lifespan_context)

    @functools.wraps(cmgr)
    def wrapper(app: Any) -> _AsyncLiftContextManager[Any]:
        return _AsyncLiftContextManager(cmgr(app))

    return wrapper


def _merge_lifespan_context(