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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 netaddr
from openstack.common import strutils
class InvalidConfigException(ValueError):
pass
def object_from_json(json):
obj_type = json.get("type")
if obj_type == "interface":
return Interface.from_json(json)
elif obj_type == "vlan":
return Vlan.from_json(json)
elif obj_type == "ovs_bridge":
return OvsBridge.from_json(json)
elif obj_type == "ovs_bond":
return OvsBond.from_json(json)
def _get_required_field(json, name, object_name):
field = json.get(name)
if not field:
msg = '%s JSON objects require \'%s\' to be configured.' \
% (object_name, name)
raise InvalidConfigException(msg)
return field
class Route(object):
"""Base class for network routes."""
def __init__(self, next_hop, ip_netmask="", default=False):
self.next_hop = next_hop
self.ip_netmask = ip_netmask
self.default = default
@staticmethod
def from_json(json):
next_hop = _get_required_field(json, 'next_hop', 'Route')
ip_netmask = json.get('ip_netmask', "")
default = strutils.bool_from_string(str(json.get('default', False)))
return Route(next_hop, ip_netmask, default)
class Address(object):
"""Base class for network addresses."""
def __init__(self, ip_netmask):
self.ip_netmask = ip_netmask
ip_nw = netaddr.IPNetwork(self.ip_netmask)
self.ip = str(ip_nw.ip)
self.netmask = str(ip_nw.netmask)
self.version = ip_nw.version
@staticmethod
def from_json(json):
ip_netmask = _get_required_field(json, 'ip_netmask', 'Address')
return Address(ip_netmask)
class _BaseOpts(object):
"""Base abstraction for logical port options."""
def __init__(self, name, use_dhcp=False, use_dhcpv6=False, addresses=[],
routes=[], mtu=1500):
self.name = name
self.mtu = mtu
self.use_dhcp = use_dhcp
self.use_dhcpv6 = use_dhcpv6
self.addresses = addresses
self.routes = routes
self.bridge_name = None
self.ovs_port = False
def v4_addresses(self):
v4_addresses = []
for addr in self.addresses:
if addr.version == 4:
v4_addresses.append(addr)
return v4_addresses
def v6_addresses(self):
v6_addresses = []
for addr in self.addresses:
if addr.version == 6:
v6_addresses.append(addr)
return v6_addresses
@staticmethod
def base_opts_from_json(json):
use_dhcp = strutils.bool_from_string(str(json.get('use_dhcp', False)))
use_dhcpv6 = strutils.bool_from_string(str(json.get('use_dhcpv6',
False)))
mtu = json.get('mtu', 1500)
addresses = []
routes = []
# addresses
addresses_json = json.get('addresses')
if addresses_json:
if isinstance(addresses_json, list):
for address in addresses_json:
addresses.append(Address.from_json(address))
else:
msg = 'Addresses must be a list.'
raise InvalidConfigException(msg)
# routes
routes_json = json.get('routes')
if routes_json:
if isinstance(routes_json, list):
for route in routes_json:
routes.append(Route.from_json(route))
else:
msg = 'Routes must be a list.'
raise InvalidConfigException(msg)
return (use_dhcp, use_dhcpv6, addresses, routes, mtu)
class Interface(_BaseOpts):
"""Base class for network interfaces."""
def __init__(self, name, use_dhcp=False, use_dhcpv6=False, addresses=[],
routes=[], mtu=1500):
super(Interface, self).__init__(name, use_dhcp, use_dhcpv6, addresses,
routes, mtu)
@staticmethod
def from_json(json):
name = _get_required_field(json, 'name', 'Interface')
opts = _BaseOpts.base_opts_from_json(json)
return Interface(name, *opts)
class Vlan(_BaseOpts):
"""Base class for VLANs.
NOTE: the name parameter must be formated w/ vlan<num> where <num>
matches the vlan ID being used. Example: vlan5
"""
def __init__(self, device, vlan_id, use_dhcp=False, use_dhcpv6=False,
addresses=[], routes=[], mtu=1500):
name = 'vlan%i' % vlan_id
super(Vlan, self).__init__(name, use_dhcp, use_dhcpv6, addresses,
routes, mtu)
self.vlan_id = int(vlan_id)
self.device = device
@staticmethod
def from_json(json):
device = _get_required_field(json, 'device', 'Vlan')
vlan_id = _get_required_field(json, 'vlan_id', 'Vlan')
opts = _BaseOpts.base_opts_from_json(json)
return Vlan(device, vlan_id, *opts)
class OvsBridge(_BaseOpts):
"""Base class for OVS bridges."""
def __init__(self, name, use_dhcp=False, use_dhcpv6=False, addresses=[],
routes=[], mtu=1500, members=[], ovs_options=None):
super(OvsBridge, self).__init__(name, use_dhcp, use_dhcpv6, addresses,
routes, mtu)
self.members = members
self.ovs_options = ovs_options
for member in self.members:
member.bridge_name = name
member.ovs_port = True
@staticmethod
def from_json(json):
name = _get_required_field(json, 'name', 'OvsBridge')
opts = _BaseOpts.base_opts_from_json(json)
ovs_options = json.get('ovs_options')
members = []
# members
members_json = json.get('members')
if members_json:
if isinstance(members_json, list):
for member in members_json:
members.append(object_from_json(member))
else:
msg = 'Members must be a list.'
raise InvalidConfigException(msg)
return OvsBridge(name, *opts, members=members, ovs_options=ovs_options)
class OvsBond(_BaseOpts):
"""Base class for OVS bonds."""
def __init__(self, name, use_dhcp=False, use_dhcpv6=False, addresses=[],
routes=[], mtu=1500, members=[], ovs_options=None):
super(OvsBond, self).__init__(name, use_dhcp, use_dhcpv6, addresses,
routes, mtu)
self.members = members
self.ovs_options = ovs_options
@staticmethod
def from_json(json):
name = _get_required_field(json, 'name', 'OvsBond')
opts = _BaseOpts.base_opts_from_json(json)
ovs_options = json.get('ovs_options')
members = []
# members
members_json = json.get('members')
if members_json:
if isinstance(members_json, list):
for member in members_json:
members.append(object_from_json(member))
else:
msg = 'Members must be a list.'
raise InvalidConfigException(msg)
return OvsBond(name, *opts, members=members, ovs_options=ovs_options)
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