ec2_vpc_route_table.py 文件源码

def find_igw(vpc_conn, vpc_id):
    """
    Finds the Internet gateway for the given VPC ID.

    Raises an AnsibleIgwSearchException if either no IGW can be found, or more
    than one found for the given VPC.

    Note that this function is duplicated in other ec2 modules, and should
    potentially be moved into potentially be moved into a shared module_utils
    """
    igw = vpc_conn.get_all_internet_gateways(
        filters={'attachment.vpc-id': vpc_id})

    if not igw:
        raise AnsibleIgwSearchException('No IGW found for VPC {0}'.
                                         format(vpc_id))
    elif len(igw) == 1:
        return igw[0].id
    else:
        raise AnsibleIgwSearchException('Multiple IGWs found for VPC {0}'.
                                        format(vpc_id))