def test_filter_ips_white_list(self):
        CONF.network_label_regex = '.*'
        CONF.ip_regex = '^(15.|123.)'
        CONF.black_list_regex = '^10.123.123.*'
        ip = self.instance.get_visible_ip_addresses()
        ip = filter_ips(
            ip, CONF.ip_regex, CONF.black_list_regex)
        self.assertEqual(2, len(ip))
        self.assertTrue('123.123.123.123' in ip)
        self.assertTrue('15.123.123.123' in ip)
def GetLogs(region, stream_name, group_name, token=None):
  """Fetches the JSON formatted log stream starting at the token."""
  get_cmd = util.AWS_PREFIX + [
      '--region', region,
      'logs', 'get-log-events',
      '--start-from-head',
      '--log-group-name', group_name,
      '--log-stream-name', stream_name,
  ]
  if token:
    get_cmd.extend(['--next-token', token])
  stdout, _, _ = vm_util.IssueCommand(get_cmd)
  return json.loads(stdout)