def update_zone()

in libcloud/dns/drivers/durabledns.py [0:0]
55 lines of code
9 McCabe index (conditional complexity)

    def update_zone(self, zone, domain, type="master", ttl=None, extra=None):
        """
        Update an existing zone.

        :param zone: Zone to update.
        :type  zone: :class:`Zone`

        :param domain: Name of zone, followed by a dot (.) (e.g. example.com.)
        :type  domain: ``str``

        :param type: Zone type (master / slave).
        :type  type: ``str``

        :param ttl: TTL for new records. (optional)
        :type  ttl: ``int``

        :param extra: Extra attributes ('ns', 'mbox', 'refresh', 'retry',
                      'expire', 'minimum', 'xfer', 'update_acl'). (optional)
        :type  extra: ``dict``

        :rtype: :class:`Zone`
        """
        if ttl is None:
            ttl = zone.ttl
        if extra is None:
            extra = zone.extra
        else:
            extra_fields = ZONE_EXTRA_PARAMS_DEFAULT_VALUES.keys()
            missing = set(extra_fields).difference(set(extra.keys()))
            for field in missing:
                extra[field] = zone.extra.get(field)
        schema_params = SCHEMA_BUILDER_MAP.get("update_zone")
        attributes = schema_params.get("attributes")
        schema = api_schema_builder(
            schema_params.get("urn_nid"), schema_params.get("method"), attributes
        )
        params = {
            "apiuser": self.key,
            "apikey": self.secret,
            "zonename": domain,
            "ttl": ttl,
        }
        params.update(extra)
        urn = list(schema)[0]
        for child in urn:
            key = child.tag.split(":")[2]
            if key in attributes:
                if isinstance(params.get(key), int):
                    child.text = "%d"
                else:
                    child.text = "%s"
        # We can't insert values directly in child.text because API raises
        # and exception for values that need to be integers. And tostring
        # method from ElementTree can't handle int values.
        skel = ensure_string(tostring(schema))  # Deal with PY3
        req_data = skel % (
            self.key,
            self.secret,
            domain,
            extra["ns"],
            extra["mbox"],
            extra["refresh"],
            extra["retry"],
            extra["expire"],
            extra["minimum"],
            ttl,
            extra["xfer"],
            extra["update_acl"],
        )
        action = "/services/dns/updateZone.php?"
        headers = {"SOAPAction": "urn:updateZonewsdl#updateZone"}
        try:
            self.connection.request(action=action, data=req_data, method="POST", headers=headers)
        except DurableDNSException as e:
            if "Zone does not exist" in e.message:
                raise ZoneDoesNotExistError(zone_id=zone.id, driver=self, value=e.message)
            raise e

        # After update the zone, serial number change. In order to have it
        # updated, we need to get again the zone data.
        zone = self.get_zone(zone.id)
        return zone