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name : ubuntu.py
 # Copyright (C) 2012 Canonical Ltd.
# Copyright (C) 2012 Hewlett-Packard Development Company, L.P.
# Copyright (C) 2012 Yahoo! Inc.
#
# Author: Scott Moser <scott.moser@canonical.com>
# Author: Juerg Haefliger <juerg.haefliger@hp.com>
# Author: Joshua Harlow <harlowja@yahoo-inc.com>
# Author: Ben Howard <ben.howard@canonical.com>
#
# This file is part of cloud-init. See LICENSE file for license information.

import copy
import logging

from cloudinit.distros import PREFERRED_NTP_CLIENTS, debian
from cloudinit.distros.package_management.snap import Snap
from cloudinit.net import activators
from cloudinit.net.netplan import CLOUDINIT_NETPLAN_FILE

LOG = logging.getLogger(__name__)


class Distro(debian.Distro):
    def __init__(self, name, cfg, paths):
        super().__init__(name, cfg, paths)
        # Ubuntu specific network cfg locations
        self.network_conf_fn = {
            "eni": "/etc/network/interfaces.d/50-cloud-init.cfg",
            "netplan": CLOUDINIT_NETPLAN_FILE,
        }
        self.renderer_configs = {
            "eni": {
                "eni_path": self.network_conf_fn["eni"],
                "eni_header": debian.NETWORK_FILE_HEADER,
            },
            "netplan": {
                "netplan_path": self.network_conf_fn["netplan"],
                "netplan_header": debian.NETWORK_FILE_HEADER,
                "postcmds": True,
            },
        }
        self.snap = Snap(self._runner)
        self.package_managers.append(self.snap)

    def package_command(self, command, args=None, pkgs=None):
        super().package_command(command, args, pkgs)
        if self.snap.available():
            self.snap.upgrade_packages()

    @property
    def preferred_ntp_clients(self):
        """The preferred ntp client is dependent on the version."""
        if not self._preferred_ntp_clients:
            self._preferred_ntp_clients = copy.deepcopy(PREFERRED_NTP_CLIENTS)
        return self._preferred_ntp_clients

    def wait_for_network(self) -> None:
        """Ensure that cloud-init's network service has network connectivity"""
        try:
            self.network_activator.wait_for_network()
        except activators.NoActivatorException:
            LOG.error("Failed to wait for network. No network activator found")
        except Exception as e:
            LOG.error("Failed to wait for network: %s", e)
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