func firehoseStreamStateRefreshFunc(conn *firehose.Firehose, sn string) resource.StateRefreshFunc {
	return func() (interface{}, string, error) {
		describeOpts := &firehose.DescribeDeliveryStreamInput{
			DeliveryStreamName: aws.String(sn),
		}
		resp, err := conn.DescribeDeliveryStream(describeOpts)
		if err != nil {
			if awsErr, ok := err.(awserr.Error); ok {
				if awsErr.Code() == "ResourceNotFoundException" {
					return 42, "DESTROYED", nil
				}
				return nil, awsErr.Code(), err
			}
			return nil, "failed", err
		}

		return resp.DeliveryStreamDescription, *resp.DeliveryStreamDescription.DeliveryStreamStatus, nil
	}
}