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# -*- coding: utf-8 -*-
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import os_net_config
from os_net_config import utils
from os_net_config.openstack.common import processutils
def ifcfg_config_path(name):
return "/etc/sysconfig/network-scripts/ifcfg-%s" % name
def route_config_path(name):
return "/etc/sysconfig/network-scripts/route-%s" % name
class IfcfgNetConfig(os_net_config.NetConfig):
"""Configure network interfaces using the ifcfg format."""
def __init__(self):
self.interfaces = {}
self.routes = {}
def addInterface(self, interface):
data = "DEVICE=%s\n" % interface.name
data += "ONBOOT=yes\n"
data += "HOTPLUG=no\n"
if interface.type == 'ovs':
data += "DEVICETYPE=ovs\n"
if interface.bridge:
data += "TYPE=OVSPort\n"
data += "OVS_BRIDGE=%s\n" % interface.bridge
data += "BOOTPROTO=none\n"
if interface.mtu != 1500:
data += "MTU=%i\n" % interface.mtu
if interface.use_dhcp:
data += "BOOTPROTO=dhcp\n"
if interface.use_dhcpv6 or interface.v6_addresses():
data += "IPV6INIT=yes\n"
if interface.mtu != 1500:
data += "IPV6_MTU=%i\n" % interface.mtu
if interface.use_dhcpv6:
data += "DHCPV6C=yes\n"
elif interface.addresses:
#TODO(dprince): support multiple addresses for each type
v4_addresses = interface.v4_addresses()
if v4_addresses:
first_v4 = v4_addresses[0]
data += "BOOTPROTO=static\n"
data += "IPADDR=%s\n" % first_v4.ip
data += "NETMASK=%s\n" % first_v4.netmask
v6_addresses = interface.v6_addresses()
if v6_addresses:
first_v6 = v6_addresses[0]
data += "IPV6_AUTOCONF=no\n"
data += "IPV6ADDR=%s\n" % first_v6.ip
self.interfaces[interface.name] = data
if interface.routes:
self.addRoutes(interface.name, interface.routes)
def addRoutes(self, interface_name, routes=[]):
data = ""
first_line = ""
for route in routes:
if route.default:
first_line = "default via %s dev %s\n" % (route.next_hop,
interface_name)
else:
data += "%s via %s dev %s\n" % (route.ip_netmask,
route.next_hop,
interface_name)
self.routes[interface_name] = first_line + data
def apply(self):
restart_interfaces = []
update_files = {}
for interface_name, iface_data in self.interfaces.iteritems():
route_data = self.routes.get(interface_name)
if (utils.diff(ifcfg_config_path(interface_name), iface_data) or
utils.diff(route_config_path(interface_name), route_data)):
restart_interfaces.append(interface_name)
update_files[ifcfg_config_path(interface_name)] = iface_data
update_files[route_config_path(interface_name)] = route_data
for interface in restart_interfaces:
processutils.execute('/sbin/ifdown', interface)
for location, data in update_files.iteritems():
utils.write_config(location, data)
for interface in restart_interfaces:
processutils.execute('/sbin/ifup', interface)
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