182 lines
6.4 KiB
Python
182 lines
6.4 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import netaddr
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import os_net_config
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from os_net_config import objects
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from os_net_config import utils
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from os_net_config.openstack.common import processutils
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# TODO(?): should move to interfaces.d
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def _network_config_path():
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return "/etc/network/interfaces"
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class ENINetConfig(os_net_config.NetConfig):
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"""Debian/Ubuntu implementation for network config
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Configure iface/bridge/routes using debian/ubuntu
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/etc/network/interfaces format.
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"""
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def __init__(self):
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self.interfaces = {}
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self.routes = {}
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self.bridges = {}
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def _addCommon(self, interface, static_addr=None):
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data = ""
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address_data = ""
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if static_addr:
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address_data += " address %s\n" % static_addr.ip
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address_data += " netmask %s\n" % static_addr.netmask
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else:
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v4_addresses = interface.v4_addresses()
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if v4_addresses:
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data += self._addCommon(interface, v4_addresses[0])
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v6_addresses = interface.v6_addresses()
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if v6_addresses:
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data += self._addCommon(interface, v6_addresses[0])
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if data:
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return data
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if isinstance(interface, objects.Vlan):
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_iface = "iface vlan%i " % interface.vlan_id
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else:
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_iface = "iface %s " % interface.name
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if static_addr and static_addr.version == 6:
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_iface += "inet6 "
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else:
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_iface += "inet "
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if interface.use_dhcp:
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_iface += "dhcp\n"
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elif interface.addresses:
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_iface += "static\n"
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else:
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_iface += "manual\n"
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if isinstance(interface, objects.OvsBridge):
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data += "auto %s\n" % interface.name
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data += "allow-ovs %s\n" % interface.name
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data += _iface
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data += address_data
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data += " ovs_type OVSBridge\n"
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if interface.members:
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data += " ovs_ports"
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for i in interface.members:
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data += " %s" % i.name
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data += "\n"
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for i in interface.members:
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data += " pre-up ip addr flush dev %s\n" % i.name
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elif interface.ovs_port:
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if isinstance(interface, objects.Vlan):
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data += "auto vlan%i\n" % interface.vlan_id
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data += "allow-%s vlan%i\n" % (interface.bridge_name,
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interface.vlan_id)
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data += _iface
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data += address_data
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data += " ovs_bridge %s\n" % interface.bridge_name
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data += " ovs_type OVSIntPort\n"
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data += " ovs_options tag=%s\n" % interface.vlan_id
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else:
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data += "auto %s\n" % interface.name
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data += "allow-%s %s\n" % (interface.bridge_name,
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interface.name)
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data += _iface
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data += address_data
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data += " ovs_bridge %s\n" % interface.bridge_name
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data += " ovs_type OVSPort\n"
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elif isinstance(interface, objects.Vlan):
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data += "auto vlan%i\n" % interface.vlan_id
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data += _iface
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data += address_data
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data += " vlan-raw-device %s\n" % interface.device
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else:
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data += "auto %s\n" % interface.name
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data += _iface
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data += address_data
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if interface.mtu != 1500:
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data += " mtu %i\n" % interface.mtu
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return data
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def addInterface(self, interface):
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data = self._addCommon(interface)
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self.interfaces[interface.name] = data
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if interface.routes:
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self._addRoutes(interface.name, interface.routes)
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def addBridge(self, bridge):
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data = self._addCommon(bridge)
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self.bridges[bridge.name] = data
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if bridge.routes:
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self._addRoutes(bridge.name, bridge.routes)
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def addVlan(self, vlan):
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data = self._addCommon(vlan)
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self.interfaces[vlan.name] = data
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if vlan.routes:
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self._addRoutes(vlan.name, vlan.routes)
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def _addRoutes(self, interface_name, routes=[]):
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data = ""
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for route in routes:
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rt = netaddr.IPNetwork(route.ip_netmask)
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data += "up route add -net %s netmask %s gw %s\n" % (
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str(rt.ip), str(rt.netmask), route.next_hop)
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data += "down route del -net %s netmask %s gw %s\n" % (
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str(rt.ip), str(rt.netmask), route.next_hop)
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self.routes[interface_name] = data
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def apply(self):
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new_config = ""
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# write out bridges first. This ensures that an ifup -a
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# on reboot brings them up first
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for bridge_name, bridge_data in self.bridges.iteritems():
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route_data = self.routes.get(bridge_name)
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bridge_data += (route_data or '')
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new_config += bridge_data
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for interface_name, iface_data in self.interfaces.iteritems():
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route_data = self.routes.get(interface_name)
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iface_data += (route_data or '')
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new_config += iface_data
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if (utils.diff(_network_config_path(), new_config)):
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for interface in self.interfaces.keys():
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processutils.execute('/sbin/ifdown', interface,
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check_exit_code=False)
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for bridge in self.bridges.keys():
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processutils.execute('/sbin/ifdown', bridge,
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check_exit_code=False)
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utils.write_config(_network_config_path(), new_config)
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for bridge in self.bridges.keys():
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processutils.execute('/sbin/ifup', bridge)
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for interface in self.interfaces.keys():
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processutils.execute('/sbin/ifup', interface)
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