route53cache.py 文件源码

def get_hosted_zone_id_for_dns_name(self, dns_name):
        """
        gets the hosted_zone_id associated with the 'dns_name'. 
        require:
            there is exactly 1 hosted zone for  'dns_name' in Route53.
        ensure:
            self.hosted_zone_id == hosted_zone_id
            self.dns_name[-1] == '.'
            self.dns_name[-1] == dns_name
        """
        self.dns_name = dns_name if dns_name[-1] == '.' else '%s.' % dns_name
        response = self.route53.list_hosted_zones_by_name(DNSName=self.dns_name)
        zones = filter(lambda r: r['Name'] == self.dns_name, response['HostedZones'])
        if len(zones) == 1:
            self.hosted_zone_id = zones[0]['Id'].split('/')[-1]
        elif len(zones) > 1:
            raise click.UsageError('There are %d hosted zones for the DNS name %s, please specify --hosted-zone-id' % (len(zones), self.dns_name))
        else:
            raise click.UsageError('There is no hosted zones for the DNS name %s' % self.dns_name)

        assert self.dns_name[-1] == '.'
        assert self.hosted_zone_id is not None

        log.info('found dns name %s for hosted zone id %s' %
                 (self.dns_name, self.hosted_zone_id))