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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2011 Nicira Networks, Inc
# All Rights Reserved.
#
# 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.
from nova import db
from nova import ipv6
def get_ipam_lib(net_man):
return QuantumNovaIPAMLib(net_man)
class QuantumNovaIPAMLib(object):
"""Implements Quantum IP Address Management (IPAM) interface
using the local Nova database. This implementation is inline
with how IPAM is used by other NetworkManagers.
"""
def __init__(self, net_manager):
"""Holds a reference to the "parent" network manager, used
to take advantage of various FlatManager methods to avoid
code duplication.
"""
self.net_manager = net_manager
def get_subnets_by_net_id(self, context, tenant_id, net_id, _vif_id=None):
"""Returns information about the IPv4 and IPv6 subnets
associated with a Quantum Network UUID.
"""
n = db.network_get_by_uuid(context.elevated(), net_id)
subnet_v4 = {
'network_id': n['uuid'],
'cidr': n['cidr'],
'gateway': n['gateway'],
'broadcast': n['broadcast'],
'netmask': n['netmask'],
'version': 4,
'dns1': n['dns1'],
'dns2': n['dns2']}
#TODO(tr3buchet): I'm noticing we've assumed here that all dns is v4.
# this is probably bad as there is no way to add v6
# dns to nova
subnet_v6 = {
'network_id': n['uuid'],
'cidr': n['cidr_v6'],
'gateway': n['gateway_v6'],
'broadcast': None,
'netmask': n['netmask_v6'],
'version': 6,
'dns1': None,
'dns2': None}
return [subnet_v4, subnet_v6]
def get_routes_by_ip_block(self, context, block_id, project_id):
"""Returns the list of routes for the IP block."""
return []
def get_v4_ips_by_interface(self, context, net_id, vif_id, project_id):
"""Returns a list of IPv4 address strings associated with
the specified virtual interface, based on the fixed_ips table.
"""
# TODO(tr3buchet): link fixed_ips to vif by uuid so only 1 db call
vif_rec = db.virtual_interface_get_by_uuid(context, vif_id)
fixed_ips = db.fixed_ips_by_virtual_interface(context,
vif_rec['id'])
return [fixed_ip['address'] for fixed_ip in fixed_ips]
def get_v6_ips_by_interface(self, context, net_id, vif_id, project_id):
"""Returns a list containing a single IPv6 address strings
associated with the specified virtual interface.
"""
admin_context = context.elevated()
network = db.network_get_by_uuid(admin_context, net_id)
vif_rec = db.virtual_interface_get_by_uuid(context, vif_id)
if network['cidr_v6']:
ip = ipv6.to_global(network['cidr_v6'],
vif_rec['address'],
project_id)
return [ip]
return []
def get_floating_ips_by_fixed_address(self, context, fixed_address):
return db.floating_ip_get_by_fixed_address(context, fixed_address)
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