326b85dd61
Currently each plugin calls db.configure() within the plugin's __init__ class or defines an initialize() method that's sole job is to call this method. Instead we should just call the super method of a plugin so that db.configure() is called for us out of the db_base_plugin class. Note: the only reason why I'm making this change is that I want to add something to the __init__() class of the db_base_plugin that's needed for the nova-event-callback blueprint and adding it in the base class of init looks to be the best place. Change-Id: Iec3c912735021ceb90f657108aad3a57460d66e7 Closes-bug: #1282303
594 lines
24 KiB
Python
594 lines
24 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
# Copyright 2013 PLUMgrid, 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.
|
|
#
|
|
# @author: Edgar Magana, emagana@plumgrid.com, PLUMgrid, Inc.
|
|
|
|
"""
|
|
Neutron Plug-in for PLUMgrid Virtual Networking Infrastructure (VNI)
|
|
This plugin will forward authenticated REST API calls
|
|
to the PLUMgrid Network Management System called Director
|
|
"""
|
|
|
|
import netaddr
|
|
from oslo.config import cfg
|
|
|
|
from neutron.api.v2 import attributes
|
|
from neutron.db import db_base_plugin_v2
|
|
from neutron.db import external_net_db
|
|
from neutron.db import l3_db
|
|
from neutron.db import portbindings_db
|
|
from neutron.db import quota_db # noqa
|
|
from neutron.extensions import portbindings
|
|
from neutron.openstack.common import importutils
|
|
from neutron.openstack.common import log as logging
|
|
from neutron.plugins.plumgrid.common import exceptions as plum_excep
|
|
from neutron.plugins.plumgrid.plumgrid_plugin.plugin_ver import VERSION
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
PLUM_DRIVER = 'neutron.plugins.plumgrid.drivers.plumlib.Plumlib'
|
|
|
|
director_server_opts = [
|
|
cfg.StrOpt('director_server', default='localhost',
|
|
help=_("PLUMgrid Director server to connect to")),
|
|
cfg.StrOpt('director_server_port', default='8080',
|
|
help=_("PLUMgrid Director server port to connect to")),
|
|
cfg.StrOpt('username', default='username',
|
|
help=_("PLUMgrid Director admin username")),
|
|
cfg.StrOpt('password', default='password', secret=True,
|
|
help=_("PLUMgrid Director admin password")),
|
|
cfg.IntOpt('servertimeout', default=5,
|
|
help=_("PLUMgrid Director server timeout")), ]
|
|
|
|
cfg.CONF.register_opts(director_server_opts, "plumgriddirector")
|
|
|
|
|
|
class NeutronPluginPLUMgridV2(db_base_plugin_v2.NeutronDbPluginV2,
|
|
portbindings_db.PortBindingMixin,
|
|
external_net_db.External_net_db_mixin,
|
|
l3_db.L3_NAT_db_mixin):
|
|
|
|
supported_extension_aliases = ["external-net", "router", "binding",
|
|
"quotas"]
|
|
|
|
binding_view = "extension:port_binding:view"
|
|
binding_set = "extension:port_binding:set"
|
|
|
|
def __init__(self):
|
|
LOG.info(_('Neutron PLUMgrid Director: Starting Plugin'))
|
|
|
|
super(NeutronPluginPLUMgridV2, self).__init__()
|
|
self.plumgrid_init()
|
|
|
|
LOG.debug(_('Neutron PLUMgrid Director: Neutron server with '
|
|
'PLUMgrid Plugin has started'))
|
|
|
|
def plumgrid_init(self):
|
|
"""PLUMgrid initialization."""
|
|
director_plumgrid = cfg.CONF.plumgriddirector.director_server
|
|
director_port = cfg.CONF.plumgriddirector.director_server_port
|
|
director_admin = cfg.CONF.plumgriddirector.username
|
|
director_password = cfg.CONF.plumgriddirector.password
|
|
timeout = cfg.CONF.plumgriddirector.servertimeout
|
|
|
|
# PLUMgrid Director info validation
|
|
LOG.info(_('Neutron PLUMgrid Director: %s'), director_plumgrid)
|
|
self._plumlib = importutils.import_object(PLUM_DRIVER)
|
|
self._plumlib.director_conn(director_plumgrid, director_port, timeout,
|
|
director_admin, director_password)
|
|
|
|
def create_network(self, context, network):
|
|
"""Create Neutron network.
|
|
|
|
Creates a PLUMgrid-based bridge.
|
|
"""
|
|
|
|
LOG.debug(_('Neutron PLUMgrid Director: create_network() called'))
|
|
|
|
# Plugin DB - Network Create and validation
|
|
tenant_id = self._get_tenant_id_for_create(context,
|
|
network["network"])
|
|
self._network_admin_state(network)
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
net_db = super(NeutronPluginPLUMgridV2,
|
|
self).create_network(context, network)
|
|
# Propagate all L3 data into DB
|
|
self._process_l3_create(context, net_db, network['network'])
|
|
|
|
try:
|
|
LOG.debug(_('PLUMgrid Library: create_network() called'))
|
|
self._plumlib.create_network(tenant_id, net_db)
|
|
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
# Return created network
|
|
return net_db
|
|
|
|
def update_network(self, context, net_id, network):
|
|
"""Update Neutron network.
|
|
|
|
Updates a PLUMgrid-based bridge.
|
|
"""
|
|
|
|
LOG.debug(_("Neutron PLUMgrid Director: update_network() called"))
|
|
self._network_admin_state(network)
|
|
tenant_id = self._get_tenant_id_for_create(context, network["network"])
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
# Plugin DB - Network Update
|
|
net_db = super(
|
|
NeutronPluginPLUMgridV2, self).update_network(context,
|
|
net_id, network)
|
|
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: update_network() called"))
|
|
self._plumlib.update_network(tenant_id, net_id)
|
|
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
# Return updated network
|
|
return net_db
|
|
|
|
def delete_network(self, context, net_id):
|
|
"""Delete Neutron network.
|
|
|
|
Deletes a PLUMgrid-based bridge.
|
|
"""
|
|
|
|
LOG.debug(_("Neutron PLUMgrid Director: delete_network() called"))
|
|
net_db = super(NeutronPluginPLUMgridV2,
|
|
self).get_network(context, net_id)
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
# Plugin DB - Network Delete
|
|
super(NeutronPluginPLUMgridV2, self).delete_network(context,
|
|
net_id)
|
|
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: update_network() called"))
|
|
self._plumlib.delete_network(net_db, net_id)
|
|
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
def create_port(self, context, port):
|
|
"""Create Neutron port.
|
|
|
|
Creates a PLUMgrid-based port on the specific Virtual Network
|
|
Function (VNF).
|
|
"""
|
|
LOG.debug(_("Neutron PLUMgrid Director: create_port() called"))
|
|
|
|
# Port operations on PLUMgrid Director is an automatic operation
|
|
# from the VIF driver operations in Nova.
|
|
# It requires admin_state_up to be True
|
|
|
|
port["port"]["admin_state_up"] = True
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
# Plugin DB - Port Create and Return port
|
|
port_db = super(NeutronPluginPLUMgridV2, self).create_port(context,
|
|
port)
|
|
device_id = port_db["device_id"]
|
|
if port_db["device_owner"] == "network:router_gateway":
|
|
router_db = self._get_router(context, device_id)
|
|
else:
|
|
router_db = None
|
|
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: create_port() called"))
|
|
self._plumlib.create_port(port_db, router_db)
|
|
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
# Plugin DB - Port Create and Return port
|
|
return self._port_viftype_binding(context, port_db)
|
|
|
|
def update_port(self, context, port_id, port):
|
|
"""Update Neutron port.
|
|
|
|
Updates a PLUMgrid-based port on the specific Virtual Network
|
|
Function (VNF).
|
|
"""
|
|
LOG.debug(_("Neutron PLUMgrid Director: update_port() called"))
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
# Plugin DB - Port Create and Return port
|
|
port_db = super(NeutronPluginPLUMgridV2, self).update_port(
|
|
context, port_id, port)
|
|
device_id = port_db["device_id"]
|
|
if port_db["device_owner"] == "network:router_gateway":
|
|
router_db = self._get_router(context, device_id)
|
|
else:
|
|
router_db = None
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: create_port() called"))
|
|
self._plumlib.update_port(port_db, router_db)
|
|
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
# Plugin DB - Port Update
|
|
return self._port_viftype_binding(context, port_db)
|
|
|
|
def delete_port(self, context, port_id, l3_port_check=True):
|
|
"""Delete Neutron port.
|
|
|
|
Deletes a PLUMgrid-based port on the specific Virtual Network
|
|
Function (VNF).
|
|
"""
|
|
|
|
LOG.debug(_("Neutron PLUMgrid Director: delete_port() called"))
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
# Plugin DB - Port Create and Return port
|
|
port_db = super(NeutronPluginPLUMgridV2,
|
|
self).get_port(context, port_id)
|
|
self.disassociate_floatingips(context, port_id)
|
|
super(NeutronPluginPLUMgridV2, self).delete_port(context, port_id)
|
|
|
|
if port_db["device_owner"] == "network:router_gateway":
|
|
device_id = port_db["device_id"]
|
|
router_db = self._get_router(context, device_id)
|
|
else:
|
|
router_db = None
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: delete_port() called"))
|
|
self._plumlib.delete_port(port_db, router_db)
|
|
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
def get_port(self, context, id, fields=None):
|
|
with context.session.begin(subtransactions=True):
|
|
port_db = super(NeutronPluginPLUMgridV2,
|
|
self).get_port(context, id, fields)
|
|
|
|
self._port_viftype_binding(context, port_db)
|
|
return self._fields(port_db, fields)
|
|
|
|
def get_ports(self, context, filters=None, fields=None):
|
|
with context.session.begin(subtransactions=True):
|
|
ports_db = super(NeutronPluginPLUMgridV2,
|
|
self).get_ports(context, filters, fields)
|
|
for port_db in ports_db:
|
|
self._port_viftype_binding(context, port_db)
|
|
return [self._fields(port, fields) for port in ports_db]
|
|
|
|
def create_subnet(self, context, subnet):
|
|
"""Create Neutron subnet.
|
|
|
|
Creates a PLUMgrid-based DHCP and NAT Virtual Network
|
|
Functions (VNFs).
|
|
"""
|
|
|
|
LOG.debug(_("Neutron PLUMgrid Director: create_subnet() called"))
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
# Plugin DB - Subnet Create
|
|
net_db = super(NeutronPluginPLUMgridV2, self).get_network(
|
|
context, subnet['subnet']['network_id'], fields=None)
|
|
s = subnet['subnet']
|
|
ipnet = netaddr.IPNetwork(s['cidr'])
|
|
|
|
# PLUMgrid Director reserves the last IP address for GW
|
|
# when is not defined
|
|
if s['gateway_ip'] is attributes.ATTR_NOT_SPECIFIED:
|
|
gw_ip = str(netaddr.IPAddress(ipnet.last - 1))
|
|
subnet['subnet']['gateway_ip'] = gw_ip
|
|
|
|
# PLUMgrid reserves the first IP
|
|
if s['allocation_pools'] == attributes.ATTR_NOT_SPECIFIED:
|
|
allocation_pool = self._allocate_pools_for_subnet(context, s)
|
|
subnet['subnet']['allocation_pools'] = allocation_pool
|
|
|
|
sub_db = super(NeutronPluginPLUMgridV2, self).create_subnet(
|
|
context, subnet)
|
|
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: create_subnet() called"))
|
|
self._plumlib.create_subnet(sub_db, net_db, ipnet)
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
return sub_db
|
|
|
|
def delete_subnet(self, context, subnet_id):
|
|
"""Delete subnet core Neutron API."""
|
|
|
|
LOG.debug(_("Neutron PLUMgrid Director: delete_subnet() called"))
|
|
# Collecting subnet info
|
|
sub_db = self._get_subnet(context, subnet_id)
|
|
tenant_id = self._get_tenant_id_for_create(context, subnet_id)
|
|
net_id = sub_db["network_id"]
|
|
net_db = self.get_network(context, net_id)
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
# Plugin DB - Subnet Delete
|
|
super(NeutronPluginPLUMgridV2, self).delete_subnet(
|
|
context, subnet_id)
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: delete_subnet() called"))
|
|
self._plumlib.delete_subnet(tenant_id, net_db, net_id)
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
def update_subnet(self, context, subnet_id, subnet):
|
|
"""Update subnet core Neutron API."""
|
|
|
|
LOG.debug(_("update_subnet() called"))
|
|
# Collecting subnet info
|
|
org_sub_db = self._get_subnet(context, subnet_id)
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
# Plugin DB - Subnet Update
|
|
new_sub_db = super(NeutronPluginPLUMgridV2,
|
|
self).update_subnet(context, subnet_id, subnet)
|
|
ipnet = netaddr.IPNetwork(new_sub_db['cidr'])
|
|
|
|
try:
|
|
# PLUMgrid Server does not support updating resources yet
|
|
LOG.debug(_("PLUMgrid Library: update_network() called"))
|
|
self._plumlib.update_subnet(org_sub_db, new_sub_db, ipnet)
|
|
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
return new_sub_db
|
|
|
|
def create_router(self, context, router):
|
|
"""
|
|
Create router extension Neutron API
|
|
"""
|
|
LOG.debug(_("Neutron PLUMgrid Director: create_router() called"))
|
|
|
|
tenant_id = self._get_tenant_id_for_create(context, router["router"])
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
|
|
# Create router in DB
|
|
router_db = super(NeutronPluginPLUMgridV2,
|
|
self).create_router(context, router)
|
|
# Create router on the network controller
|
|
try:
|
|
# Add Router to VND
|
|
LOG.debug(_("PLUMgrid Library: create_router() called"))
|
|
self._plumlib.create_router(tenant_id, router_db)
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
# Return created router
|
|
return router_db
|
|
|
|
def update_router(self, context, router_id, router):
|
|
|
|
LOG.debug(_("Neutron PLUMgrid Director: update_router() called"))
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
router_db = super(NeutronPluginPLUMgridV2,
|
|
self).update_router(context, router_id, router)
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: update_router() called"))
|
|
self._plumlib.update_router(router_db, router_id)
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
# Return updated router
|
|
return router_db
|
|
|
|
def delete_router(self, context, router_id):
|
|
LOG.debug(_("Neutron PLUMgrid Director: delete_router() called"))
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
orig_router = self._get_router(context, router_id)
|
|
tenant_id = orig_router["tenant_id"]
|
|
|
|
super(NeutronPluginPLUMgridV2, self).delete_router(context,
|
|
router_id)
|
|
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: delete_router() called"))
|
|
self._plumlib.delete_router(tenant_id, router_id)
|
|
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
def add_router_interface(self, context, router_id, interface_info):
|
|
|
|
LOG.debug(_("Neutron PLUMgrid Director: "
|
|
"add_router_interface() called"))
|
|
with context.session.begin(subtransactions=True):
|
|
# Validate args
|
|
router_db = self._get_router(context, router_id)
|
|
tenant_id = router_db['tenant_id']
|
|
|
|
# Create interface in DB
|
|
int_router = super(NeutronPluginPLUMgridV2,
|
|
self).add_router_interface(context,
|
|
router_id,
|
|
interface_info)
|
|
port_db = self._get_port(context, int_router['port_id'])
|
|
subnet_id = port_db["fixed_ips"][0]["subnet_id"]
|
|
subnet_db = super(NeutronPluginPLUMgridV2,
|
|
self)._get_subnet(context, subnet_id)
|
|
ipnet = netaddr.IPNetwork(subnet_db['cidr'])
|
|
|
|
# Create interface on the network controller
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: add_router_interface() called"))
|
|
self._plumlib.add_router_interface(tenant_id, router_id,
|
|
port_db, ipnet)
|
|
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
return int_router
|
|
|
|
def remove_router_interface(self, context, router_id, int_info):
|
|
|
|
LOG.debug(_("Neutron PLUMgrid Director: "
|
|
"remove_router_interface() called"))
|
|
with context.session.begin(subtransactions=True):
|
|
# Validate args
|
|
router_db = self._get_router(context, router_id)
|
|
tenant_id = router_db['tenant_id']
|
|
if 'port_id' in int_info:
|
|
port = self._get_port(context, int_info['port_id'])
|
|
net_id = port['network_id']
|
|
|
|
elif 'subnet_id' in int_info:
|
|
subnet_id = int_info['subnet_id']
|
|
subnet = self._get_subnet(context, subnet_id)
|
|
net_id = subnet['network_id']
|
|
|
|
# Remove router in DB
|
|
del_int_router = super(NeutronPluginPLUMgridV2,
|
|
self).remove_router_interface(context,
|
|
router_id,
|
|
int_info)
|
|
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: "
|
|
"remove_router_interface() called"))
|
|
self._plumlib.remove_router_interface(tenant_id,
|
|
net_id, router_id)
|
|
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
return del_int_router
|
|
|
|
def create_floatingip(self, context, floatingip):
|
|
LOG.debug(_("Neutron PLUMgrid Director: create_floatingip() called"))
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
|
|
floating_ip = super(NeutronPluginPLUMgridV2,
|
|
self).create_floatingip(context, floatingip)
|
|
|
|
net_id = floating_ip['floating_network_id']
|
|
net_db = super(NeutronPluginPLUMgridV2,
|
|
self).get_network(context, net_id)
|
|
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: create_floatingip() called"))
|
|
self._plumlib.create_floatingip(net_db, floating_ip)
|
|
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
return floating_ip
|
|
|
|
def update_floatingip(self, context, id, floatingip):
|
|
LOG.debug(_("Neutron PLUMgrid Director: update_floatingip() called"))
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
|
|
floating_ip = super(NeutronPluginPLUMgridV2,
|
|
self).update_floatingip(context, id,
|
|
floatingip)
|
|
|
|
net_id = floating_ip['floating_network_id']
|
|
net_db = super(NeutronPluginPLUMgridV2,
|
|
self).get_network(context, net_id)
|
|
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: update_floatingip() called"))
|
|
self._plumlib.update_floatingip(net_db, floating_ip, id)
|
|
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
return floating_ip
|
|
|
|
def delete_floatingip(self, context, id):
|
|
LOG.debug(_("Neutron PLUMgrid Director: delete_floatingip() called"))
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
|
|
floating_ip_org = super(NeutronPluginPLUMgridV2,
|
|
self).get_floatingip(context, id)
|
|
|
|
net_id = floating_ip_org['floating_network_id']
|
|
net_db = super(NeutronPluginPLUMgridV2,
|
|
self).get_network(context, net_id)
|
|
super(NeutronPluginPLUMgridV2, self).delete_floatingip(context, id)
|
|
|
|
try:
|
|
LOG.debug(_("PLUMgrid Library: delete_floatingip() called"))
|
|
self._plumlib.delete_floatingip(net_db, floating_ip_org, id)
|
|
|
|
except Exception as err_message:
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
|
|
"""
|
|
Internal PLUMgrid Fuctions
|
|
"""
|
|
|
|
def _get_plugin_version(self):
|
|
return VERSION
|
|
|
|
def _port_viftype_binding(self, context, port):
|
|
port[portbindings.VIF_TYPE] = portbindings.VIF_TYPE_IOVISOR
|
|
port[portbindings.CAPABILITIES] = {
|
|
portbindings.CAP_PORT_FILTER:
|
|
'security-group' in self.supported_extension_aliases}
|
|
return port
|
|
|
|
def _network_admin_state(self, network):
|
|
try:
|
|
if network["network"].get("admin_state_up"):
|
|
network_name = network["network"]["name"]
|
|
if network["network"]["admin_state_up"] is False:
|
|
LOG.warning(_("Network with admin_state_up=False are not "
|
|
"supported yet by this plugin. Ignoring "
|
|
"setting for network %s"), network_name)
|
|
except Exception:
|
|
err_message = _("Network Admin State Validation Failed: ")
|
|
raise plum_excep.PLUMgridException(err_msg=err_message)
|
|
return network
|
|
|
|
def _allocate_pools_for_subnet(self, context, subnet):
|
|
"""Create IP allocation pools for a given subnet
|
|
|
|
Pools are defined by the 'allocation_pools' attribute,
|
|
a list of dict objects with 'start' and 'end' keys for
|
|
defining the pool range.
|
|
Modified from Neutron DB based class
|
|
|
|
"""
|
|
|
|
pools = []
|
|
# Auto allocate the pool around gateway_ip
|
|
net = netaddr.IPNetwork(subnet['cidr'])
|
|
first_ip = net.first + 2
|
|
last_ip = net.last - 1
|
|
gw_ip = int(netaddr.IPAddress(subnet['gateway_ip'] or net.last))
|
|
# Use the gw_ip to find a point for splitting allocation pools
|
|
# for this subnet
|
|
split_ip = min(max(gw_ip, net.first), net.last)
|
|
if split_ip > first_ip:
|
|
pools.append({'start': str(netaddr.IPAddress(first_ip)),
|
|
'end': str(netaddr.IPAddress(split_ip - 1))})
|
|
if split_ip < last_ip:
|
|
pools.append({'start': str(netaddr.IPAddress(split_ip + 1)),
|
|
'end': str(netaddr.IPAddress(last_ip))})
|
|
# return auto-generated pools
|
|
# no need to check for their validity
|
|
return pools
|