Source code for dhcpkit.ipv6.server.extensions.sntp

Handlers for the options defined in dhcpkit.ipv6.extensions.sntp

from ipaddress import IPv6Address

from dhcpkit.ipv6.extensions.sntp import SNTPServersOption
from dhcpkit.ipv6.server.handlers.basic import SimpleOptionHandler
from typing import Iterable

[docs]class SNTPServersOptionHandler(SimpleOptionHandler): """ Handler for putting SNTPServersOptions in responses """ def __init__(self, sntp_servers: Iterable[IPv6Address], always_send: bool = False): option = SNTPServersOption(sntp_servers=sntp_servers) option.validate() super().__init__(option, always_send=always_send) def __str__(self): return "{} with {}".format(self.__class__.__name__, ', '.join(map(str, self.option.sntp_servers)))
[docs] def combine(self, existing_options: Iterable[SNTPServersOption]) -> SNTPServersOption: """ Combine multiple options into one. :param existing_options: The existing options to include NTP servers from :return: The combined option """ sntp_servers = [] # Add from existing options first for option in existing_options: for sntp_server in option.sntp_servers: if sntp_server not in sntp_servers: sntp_servers.append(sntp_server) # Then add our own for sntp_server in self.option.sntp_servers: if sntp_server not in sntp_servers: sntp_servers.append(sntp_server) # And return a new option with the combined addresses return SNTPServersOption(sntp_servers=sntp_servers)