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# Copyright (C) 2013-2014 Canonical Ltd.
#
# Author: Scott Moser <scott.moser@canonical.com>
# Author: Blake Rouse <blake.rouse@canonical.com>
#
# This file is part of cloud-init. See LICENSE file for license information.
import abc
import six
from .network_state import parse_net_config_data
from .udev import generate_udev_rule
def filter_by_type(match_type):
return lambda iface: match_type == iface['type']
def filter_by_name(match_name):
return lambda iface: match_name == iface['name']
def filter_by_attr(match_name):
return lambda iface: (match_name in iface and iface[match_name])
filter_by_physical = filter_by_type('physical')
class Renderer(object):
@staticmethod
def _render_persistent_net(network_state):
"""Given state, emit udev rules to map mac to ifname."""
# TODO(harlowja): this seems shared between eni renderer and
# this, so move it to a shared location.
content = six.StringIO()
for iface in network_state.iter_interfaces(filter_by_physical):
# for physical interfaces write out a persist net udev rule
if 'name' in iface and iface.get('mac_address'):
driver = iface.get('driver', None)
content.write(generate_udev_rule(iface['name'],
iface['mac_address'],
driver=driver))
return content.getvalue()
@abc.abstractmethod
def render_network_state(self, network_state, target=None):
"""Render network state."""
def render_network_config(self, network_config, target=None):
return self.render_network_state(
network_state=parse_net_config_data(network_config), target=target)
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