func setKinesisRetentionPeriod(conn *kinesis.Kinesis, d *schema.ResourceData) error {
	sn := d.Get("name").(string)

	oraw, nraw := d.GetChange("retention_period")
	o := oraw.(int)
	n := nraw.(int)

	if n == 0 {
		log.Printf("[DEBUG] Kinesis Stream (%q) Retention Period Not Changed", sn)
		return nil
	}

	if n > o {
		log.Printf("[DEBUG] Increasing %s Stream Retention Period to %d", sn, n)
		_, err := conn.IncreaseStreamRetentionPeriod(&kinesis.IncreaseStreamRetentionPeriodInput{
			StreamName:           aws.String(sn),
			RetentionPeriodHours: aws.Int64(int64(n)),
		})
		if err != nil {
			return err
		}

	} else {
		log.Printf("[DEBUG] Decreasing %s Stream Retention Period to %d", sn, n)
		_, err := conn.DecreaseStreamRetentionPeriod(&kinesis.DecreaseStreamRetentionPeriodInput{
			StreamName:           aws.String(sn),
			RetentionPeriodHours: aws.Int64(int64(n)),
		})
		if err != nil {
			return err
		}
	}

	stateConf := &resource.StateChangeConf{
		Pending:    []string{"UPDATING"},
		Target:     []string{"ACTIVE"},
		Refresh:    streamStateRefreshFunc(conn, sn),
		Timeout:    5 * time.Minute,
		Delay:      10 * time.Second,
		MinTimeout: 3 * time.Second,
	}

	_, err := stateConf.WaitForState()
	if err != nil {
		return fmt.Errorf(
			"Error waiting for Kinesis Stream (%s) to become active: %s",
			sn, err)
	}

	return nil
}
func setKinesisRetentionPeriod(conn *kinesis.Kinesis, d *schema.ResourceData) error {
	sn := d.Get("name").(string)

	oraw, nraw := d.GetChange("retention_period")
	o := oraw.(int)
	n := nraw.(int)

	if n == 0 {
		log.Printf("[DEBUG] Kinesis Stream (%q) Retention Period Not Changed", sn)
		return nil
	}

	if n > o {
		log.Printf("[DEBUG] Increasing %s Stream Retention Period to %d", sn, n)
		_, err := conn.IncreaseStreamRetentionPeriod(&kinesis.IncreaseStreamRetentionPeriodInput{
			StreamName:           aws.String(sn),
			RetentionPeriodHours: aws.Int64(int64(n)),
		})
		if err != nil {
			return err
		}

	} else {
		log.Printf("[DEBUG] Decreasing %s Stream Retention Period to %d", sn, n)
		_, err := conn.DecreaseStreamRetentionPeriod(&kinesis.DecreaseStreamRetentionPeriodInput{
			StreamName:           aws.String(sn),
			RetentionPeriodHours: aws.Int64(int64(n)),
		})
		if err != nil {
			return err
		}
	}

	if err := waitForKinesisToBeActive(conn, sn); err != nil {
		return err
	}

	return nil
}