103 lines
3.2 KiB
Python
103 lines
3.2 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright 2010 United States Government as represented by the
|
|
# Administrator of the National Aeronautics and Space Administration.
|
|
# All Rights Reserved.
|
|
# Copyright (c) 2010 Citrix Systems, Inc.
|
|
#
|
|
# 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.
|
|
|
|
|
|
"""Network-releated utilities for supporting libvirt connection code."""
|
|
|
|
|
|
import netaddr
|
|
|
|
from nova import context
|
|
from nova import db
|
|
from nova import flags
|
|
from nova import ipv6
|
|
from nova import utils
|
|
|
|
|
|
FLAGS = flags.FLAGS
|
|
|
|
|
|
def get_net_and_mask(cidr):
|
|
net = netaddr.IPNetwork(cidr)
|
|
return str(net.ip), str(net.netmask)
|
|
|
|
|
|
def get_net_and_prefixlen(cidr):
|
|
net = netaddr.IPNetwork(cidr)
|
|
return str(net.ip), str(net._prefixlen)
|
|
|
|
|
|
def get_ip_version(cidr):
|
|
net = netaddr.IPNetwork(cidr)
|
|
return int(net.version)
|
|
|
|
|
|
def get_network_info(instance):
|
|
# TODO(tr3buchet): this function needs to go away! network info
|
|
# MUST be passed down from compute
|
|
# TODO(adiantum) If we will keep this function
|
|
# we should cache network_info
|
|
admin_context = context.get_admin_context()
|
|
|
|
fixed_ips = db.fixed_ip_get_by_instance(admin_context, instance['id'])
|
|
vifs = db.virtual_interface_get_by_instance(admin_context, instance['id'])
|
|
networks = db.network_get_all_by_instance(admin_context,
|
|
instance['id'])
|
|
flavor = db.instance_type_get_by_id(admin_context,
|
|
instance['instance_type_id'])
|
|
network_info = []
|
|
|
|
for vif in vifs:
|
|
network = vif['network']
|
|
|
|
# determine which of the instance's IPs belong to this network
|
|
network_ips = [fixed_ip['address'] for fixed_ip in fixed_ips if
|
|
fixed_ip['network_id'] == network['id']]
|
|
|
|
def ip_dict(ip):
|
|
return {
|
|
'ip': ip,
|
|
'netmask': network['netmask'],
|
|
'enabled': '1'}
|
|
|
|
def ip6_dict():
|
|
prefix = network['cidr_v6']
|
|
mac = vif['address']
|
|
project_id = instance['project_id']
|
|
return {
|
|
'ip': ipv6.to_global(prefix, mac, project_id),
|
|
'netmask': network['netmask_v6'],
|
|
'enabled': '1'}
|
|
|
|
mapping = {
|
|
'label': network['label'],
|
|
'gateway': network['gateway'],
|
|
'broadcast': network['broadcast'],
|
|
'mac': vif['address'],
|
|
'rxtx_cap': flavor['rxtx_cap'],
|
|
'dns': [network['dns']],
|
|
'ips': [ip_dict(ip) for ip in network_ips]}
|
|
|
|
if FLAGS.use_ipv6:
|
|
mapping['ip6s'] = [ip6_dict()]
|
|
mapping['gateway6'] = network['gateway_v6']
|
|
|
|
network_info.append((network, mapping))
|
|
return network_info
|