_component.py 文件源码

def make_getter(getter):
    """Create an command from a method signature."""
    # pylint: disable=missing-docstring
    def get(self, timeout=10):
        name = getter.__name__
        # pylint: disable=protected-access
        signal = '{uuid}{sep}{event}'.format(
            uuid=self._uuid,
            sep=SEPARATOR,
            event=name
        )
        event = LightQueue(1)
        if flask.has_request_context():
            emit(signal, callback=lambda x: event.put(unpack(x)))
        else:
            sio = flask.current_app.extensions['socketio']
            sio.emit(signal, callback=lambda x: event.put(unpack(x)))
        data = event.get(timeout=timeout)
        return getter(self, data)

    # don't want to copy the signature in this case
    get.__doc__ = getter.__doc__

    return get