func resource_aws_db_instance_retrieve(id string, conn *rds.Rds) (*rds.DBInstance, error) {
	opts := rds.DescribeDBInstances{
		DBInstanceIdentifier: id,
	}

	log.Printf("[DEBUG] DB Instance describe configuration: %#v", opts)

	resp, err := conn.DescribeDBInstances(&opts)

	if err != nil {
		return nil, fmt.Errorf("Error retrieving DB Instances: %s", err)
	}

	if len(resp.DBInstances) != 1 ||
		resp.DBInstances[0].DBInstanceIdentifier != id {
		if err != nil {
			return nil, fmt.Errorf("Unable to find DB Instance: %#v", resp.DBInstances)
		}
	}

	v := resp.DBInstances[0]

	return &v, nil
}