1f138e25d3
This exception code catches all exceptions, and then always raises them again. More interestingly, it uses excutils.save_and_reraise_exception incorrectly (outside a `with` statement), which triggers the pylint test designed to catch exactly this. Change-Id: Iab9d69944cbae5257682ac65ff2b8fba3ef7017e
235 lines
11 KiB
Python
235 lines
11 KiB
Python
# Copyright 2014 Brocade Communications System, 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.
|
|
#
|
|
|
|
|
|
"""Implentation of Brocade SVI service Plugin."""
|
|
|
|
from oslo.config import cfg
|
|
|
|
from neutron.common import constants as l3_constants
|
|
from neutron.openstack.common import excutils
|
|
from neutron.openstack.common import log as logging
|
|
from neutron.plugins.ml2 import db
|
|
from neutron.plugins.ml2.drivers.brocade.db import models as brocade_db
|
|
from neutron.plugins.ml2.drivers.brocade.nos import nosdriver as driver
|
|
from neutron.services.l3_router import l3_router_plugin as router
|
|
|
|
|
|
DEVICE_OWNER_ROUTER_INTF = l3_constants.DEVICE_OWNER_ROUTER_INTF
|
|
DEVICE_OWNER_ROUTER_GW = l3_constants.DEVICE_OWNER_ROUTER_GW
|
|
DEVICE_OWNER_FLOATINGIP = l3_constants.DEVICE_OWNER_FLOATINGIP
|
|
|
|
ML2_BROCADE = [cfg.StrOpt('address', default='',
|
|
help=_('The address of the host to SSH to')),
|
|
cfg.StrOpt('username', default='admin',
|
|
help=_('The SSH username to use')),
|
|
cfg.StrOpt('password', default='password', secret=True,
|
|
help=_('The SSH password to use')),
|
|
cfg.StrOpt('rbridge_id', default=1,
|
|
help=_('Rbridge id of provider edge router(s)')),
|
|
]
|
|
|
|
cfg.CONF.register_opts(ML2_BROCADE, "ml2_brocade")
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class BrocadeSVIPlugin(router.L3RouterPlugin):
|
|
"""Brocade SVI service Plugin."""
|
|
|
|
def __init__(self):
|
|
"""Initialize Brocade Plugin
|
|
|
|
Specify switch address and db configuration.
|
|
"""
|
|
super(BrocadeSVIPlugin, self).__init__()
|
|
self._switch = None
|
|
self._driver = None
|
|
self.brocade_init()
|
|
|
|
def brocade_init(self):
|
|
"""Brocade specific initialization."""
|
|
LOG.debug("brocadeSVIPlugin::brocade_init()")
|
|
|
|
self._switch = {'address': cfg.CONF.ml2_brocade.address,
|
|
'username': cfg.CONF.ml2_brocade.username,
|
|
'password': cfg.CONF.ml2_brocade.password,
|
|
'rbridge_id': cfg.CONF.ml2_brocade.rbridge_id
|
|
}
|
|
self._driver = driver.NOSdriver()
|
|
LOG.info(_("rbridge id %s"), self._switch['rbridge_id'])
|
|
|
|
def create_router(self, context, router):
|
|
""" creates a vrf on NOS device."""
|
|
LOG.debug("BrocadeSVIPlugin.create_router called: ")
|
|
with context.session.begin(subtransactions=True):
|
|
new_router = super(BrocadeSVIPlugin, self).create_router(context,
|
|
router)
|
|
# Router on VDX
|
|
try:
|
|
switch = self._switch
|
|
self._driver.create_router(switch['address'],
|
|
switch['username'],
|
|
switch['password'],
|
|
switch['rbridge_id'],
|
|
str(new_router['id']))
|
|
except Exception:
|
|
with excutils.save_and_reraise_exception():
|
|
with context.session.begin(subtransactions=True):
|
|
super(BrocadeSVIPlugin, self).delete_router(
|
|
context,
|
|
new_router['id'])
|
|
|
|
LOG.debug("BrocadeSVIPlugin.create_router: "
|
|
"router created on VDX switch")
|
|
return new_router
|
|
|
|
def delete_router(self, context, router_id):
|
|
""" delete a vrf on NOS device."""
|
|
router = super(BrocadeSVIPlugin, self).get_router(context, router_id)
|
|
super(BrocadeSVIPlugin, self).delete_router(context, router_id)
|
|
|
|
switch = self._switch
|
|
self._driver.delete_router(switch['address'],
|
|
switch['username'],
|
|
switch['password'],
|
|
switch['rbridge_id'],
|
|
str(router['id']))
|
|
|
|
def add_router_interface(self, context, router_id, interface_info):
|
|
"""creates svi on NOS device and assigns ip addres to SVI."""
|
|
LOG.debug("BrocadeSVIPlugin.add_router_interface on VDX: "
|
|
"router_id=%(router_id)s "
|
|
"interface_info=%(interface_info)r",
|
|
{'router_id': router_id, 'interface_info': interface_info})
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
|
|
info = super(BrocadeSVIPlugin, self).add_router_interface(
|
|
context, router_id, interface_info)
|
|
|
|
port = db.get_port(context.session, info["port_id"])
|
|
|
|
# shutting down neutron port to allow NOS to do Arp/Routing
|
|
port['admin_state_up'] = False
|
|
port['port'] = port
|
|
self._core_plugin.update_port(context, info["port_id"], port)
|
|
|
|
interface_info = info
|
|
subnet = self._core_plugin._get_subnet(context,
|
|
interface_info["subnet_id"])
|
|
cidr = subnet["cidr"]
|
|
net_addr, net_len = self.net_addr(cidr)
|
|
gateway_ip = subnet["gateway_ip"]
|
|
network_id = subnet['network_id']
|
|
bnet = brocade_db.get_network(context, network_id)
|
|
vlan_id = bnet['vlan']
|
|
gateway_ip_cidr = gateway_ip + '/' + str(net_len)
|
|
LOG.debug("Allocated cidr %(cidr)s from the pool, "
|
|
"network_id %(net_id)s "
|
|
"bnet %(bnet)s "
|
|
"vlan %(vlan_id)d " % ({'cidr': gateway_ip_cidr,
|
|
'net_id': network_id,
|
|
'bnet': bnet,
|
|
'vlan_id': int(vlan_id)}))
|
|
port_filters = {'network_id': [network_id],
|
|
'device_owner': [DEVICE_OWNER_ROUTER_INTF]}
|
|
port_count = self._core_plugin.get_ports_count(context,
|
|
port_filters)
|
|
LOG.info(_("BrocadeSVIPlugin.add_router_interface ports_count %d"),
|
|
port_count)
|
|
|
|
# port count is checked against 2 since the current port is already
|
|
# added to db
|
|
if port_count == 2:
|
|
# This subnet is already part of some router
|
|
# (this is not supported in this version of brocade svi plugin)
|
|
LOG.error(_("BrocadeSVIPlugin: adding redundant router "
|
|
"interface is not supported"))
|
|
raise Exception(_("BrocadeSVIPlugin:adding redundant router "
|
|
"interface is not supported"))
|
|
|
|
try:
|
|
switch = self._switch
|
|
self._driver.create_svi(switch['address'],
|
|
switch['username'],
|
|
switch['password'],
|
|
switch['rbridge_id'],
|
|
vlan_id,
|
|
gateway_ip_cidr,
|
|
str(router_id))
|
|
except Exception:
|
|
LOG.error(_("Failed to create Brocade resources to add router "
|
|
"interface. info=%(info)s, router_id=%(router_id)s"),
|
|
{"info": info, "router_id": router_id})
|
|
with excutils.save_and_reraise_exception():
|
|
with context.session.begin(subtransactions=True):
|
|
self.remove_router_interface(context, router_id,
|
|
interface_info)
|
|
return info
|
|
|
|
def remove_router_interface(self, context, router_id, interface_info):
|
|
"""Deletes svi from NOS device."""
|
|
LOG.debug("BrocadeSVIPlugin.remove_router_interface called: "
|
|
"router_id=%(router_id)s "
|
|
"interface_info=%(interface_info)r",
|
|
{'router_id': router_id, 'interface_info': interface_info})
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
info = super(BrocadeSVIPlugin, self).remove_router_interface(
|
|
context, router_id, interface_info)
|
|
try:
|
|
subnet = self._core_plugin._get_subnet(context,
|
|
info['subnet_id'])
|
|
cidr = subnet['cidr']
|
|
net_addr, net_len = self.net_addr(cidr)
|
|
gateway_ip = subnet['gateway_ip']
|
|
network_id = subnet['network_id']
|
|
bnet = brocade_db.get_network(context, network_id)
|
|
vlan_id = bnet['vlan']
|
|
gateway_ip_cidr = gateway_ip + '/' + str(net_len)
|
|
LOG.debug("remove_router_interface removed cidr %(cidr)s"
|
|
" from the pool,"
|
|
" network_id %(net_id)s bnet %(bnet)s"
|
|
" vlan %(vlan_id)d" %
|
|
({'cidr': gateway_ip_cidr,
|
|
'net_id': network_id,
|
|
'bnet': bnet, 'vlan_id': int(vlan_id)}))
|
|
switch = self._switch
|
|
self._driver.delete_svi(switch['address'],
|
|
switch['username'],
|
|
switch['password'],
|
|
switch['rbridge_id'],
|
|
vlan_id,
|
|
gateway_ip_cidr,
|
|
str(router_id))
|
|
except Exception:
|
|
with excutils.save_and_reraise_exception():
|
|
LOG.error(_("Fail remove of interface from brocade router "
|
|
"interface. info=%(info)s, "
|
|
"router_id=%(router_id)s") %
|
|
({"info": info, "router_id": router_id}))
|
|
return True
|
|
|
|
@staticmethod
|
|
def net_addr(addr):
|
|
"""Get network address prefix and length from a given address."""
|
|
if addr is None:
|
|
return None, None
|
|
nw_addr, nw_len = addr.split('/')
|
|
nw_len = int(nw_len)
|
|
return nw_addr, nw_len
|