'Makes an AWS API call to the list of RDS instances in a particular
region'

def get_rds_instances_by_region(self, region):

    try:
        conn = rds.connect_to_region(region)
        if conn:
            instances = conn.get_all_dbinstances()
            for instance in instances:
                self.add_rds_instance(instance, region)
    except boto.exception.BotoServerError as e:
        if (not (e.reason == 'Forbidden')):
            print 'Looks    like    AWS    RDS    is    down:    '
            print e
            sys.exit(1)
