aws.py 文件源码

def filter_instances(opts, conf, hostset=None):
    def threshold_test(aws_launch_time):
        ut = get_uptime(now, aws_launch_time)
        return (ut / 60) % 60 >= opts.threshold

    now = time.time()
    ami = utils.get_opt(opts.ami, conf, 'AMI_ID', default=AMI_ID)
    if opts.imatch:
        imatch = frozenset(opts.imatch.split(','))
    else:
        imatch = None
    if hostset is None:
        if getattr(opts, 'hosts_file', None):
            with open(opts.hosts_file, 'r') as f:
                hostset = frozenset([line.strip() for line in f.readlines()])
        elif getattr(opts, 'host', None):
            hostset = frozenset((opts.host,))
    inst = [i for i in get_ec2_instances(conf)
            if i.image_id and i.public_dns_name
            and threshold_test(i.launch_time)
            and (imatch is None or i.instance_type in imatch)
            and (ami is None or ami == i.image_id)
            and (hostset is None or i.public_dns_name in hostset)]
    inst.sort(key = lambda i : (i.image_id, i.launch_time, i.public_dns_name))
    return inst