cinder.py 文件源码

def translate_cinder_exception(method):
    """Transforms a cinder exception but keeps its traceback intact."""
    @functools.wraps(method)
    def wrapper(self, ctx, *args, **kwargs):
        try:
            res = method(self, ctx, *args, **kwargs)
        except (cinder_exception.ConnectionError,
                keystone_exception.ConnectionError):
            exc_type, exc_value, exc_trace = sys.exc_info()
            exc_value = exception.CinderConnectionFailed(
                reason=six.text_type(exc_value))
            six.reraise(exc_value, None, exc_trace)
        except (keystone_exception.BadRequest,
                cinder_exception.BadRequest):
            exc_type, exc_value, exc_trace = sys.exc_info()
            exc_value = exception.InvalidInput(
                reason=six.text_type(exc_value))
            six.reraise(exc_value, None, exc_trace)
        except (keystone_exception.Forbidden,
                cinder_exception.Forbidden):
            exc_type, exc_value, exc_trace = sys.exc_info()
            exc_value = exception.Forbidden(message=six.text_type(exc_value))
            six.reraise(exc_value, None, exc_trace)
        return res
    return wrapper