ec2_vpc_net.py 文件源码

def vpc_exists(module, vpc, name, cidr_block, multi):
    """Returns True or False in regards to the existence of a VPC. When supplied
    with a CIDR, it will check for matching tags to determine if it is a match
    otherwise it will assume the VPC does not exist and thus return false.
    """
    matched_vpc = None

    try:
        matching_vpcs=vpc.get_all_vpcs(filters={'tag:Name' : name, 'cidr-block' : cidr_block})
    except Exception as e:
        e_msg=boto_exception(e)
        module.fail_json(msg=e_msg)

    if len(matching_vpcs) == 1:
        matched_vpc = matching_vpcs[0]
    elif len(matching_vpcs) > 1:
        if multi:
            module.fail_json(msg='Currently there are %d VPCs that have the same name and '
                             'CIDR block you specified. If you would like to create '
                             'the VPC anyway please pass True to the multi_ok param.' % len(matching_vpcs))

    return matched_vpc