A set of Neutron drivers for the VMware NSX.
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# Copyright 2015 VMware, 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 neutron.services.flavors import flavors_plugin
from neutron_lib.callbacks import events
from neutron_lib.callbacks import registry
from neutron_lib.callbacks import resources
from neutron_lib import constants
from neutron_lib import exceptions as n_exc
from oslo_config import cfg
from oslo_log import helpers as log_helpers
from oslo_log import log as logging
from oslo_utils import excutils
from vmware_nsx._i18n import _
from vmware_nsx.db import nsxv_db
from vmware_nsx.plugins.nsx_v.vshield.common import (
constants as vcns_const)
from vmware_nsx.plugins.nsx_v.vshield.common import exceptions as nsxv_exc
from vmware_nsx.services.lbaas import base_mgr
from vmware_nsx.services.lbaas import lb_const
from vmware_nsx.services.lbaas.nsx_v import lbaas_common as lb_common
from vmware_nsx.services.lbaas.octavia import constants as oct_const
LOG = logging.getLogger(__name__)
class EdgeLoadBalancerManagerFromDict(base_mgr.EdgeLoadbalancerBaseManager):
@log_helpers.log_method_call
def __init__(self, vcns_driver):
super(EdgeLoadBalancerManagerFromDict, self).__init__(vcns_driver)
registry.subscribe(
self._handle_subnet_gw_change,
resources.SUBNET, events.AFTER_UPDATE)
def _get_lb_flavor_size(self, context, flavor_id):
if not flavor_id:
return self.core_plugin.edge_manager.get_service_edge_size('lb')
else:
flavor = flavors_plugin.FlavorsPlugin.get_flavor(
self.flavor_plugin, context, flavor_id)
flavor_size = flavor['name']
if flavor_size.lower() in vcns_const.ALLOWED_EDGE_SIZES:
return flavor_size.lower()
else:
err_msg = (_("Invalid flavor size %(flavor)s, only %(sizes)s "
"are supported") %
{'flavor': flavor_size,
'sizes': vcns_const.ALLOWED_EDGE_SIZES})
raise n_exc.InvalidInput(error_message=err_msg)
def create(self, context, lb, completor):
sub_id = lb['vip_subnet_id']
if cfg.CONF.nsxv.use_routers_as_lbaas_platform:
edge_id = lb_common.get_lbaas_edge_id_for_subnet(
context, self.core_plugin, sub_id, lb['tenant_id'])
if not edge_id:
msg = _('No suitable Edge found for subnet %s') % sub_id
raise n_exc.BadRequest(resource='edge-lbaas', msg=msg)
else:
lb_size = self._get_lb_flavor_size(context, lb.get('flavor_id'))
edge_id = lb_common.get_lbaas_edge_id(
context, self.core_plugin, lb['id'], lb['vip_address'],
sub_id, lb['tenant_id'], lb_size)
if not edge_id:
msg = _('Failed to allocate Edge on subnet %(sub)s for '
'loadbalancer %(lb)s') % {'sub': sub_id, 'lb': lb['id']}
raise n_exc.BadRequest(resource='edge-lbaas', msg=msg)
try:
if cfg.CONF.nsxv.use_routers_as_lbaas_platform:
if not nsxv_db.get_nsxv_lbaas_loadbalancer_binding_by_edge(
context.session, edge_id):
lb_common.enable_edge_acceleration(self.vcns, edge_id)
lb_common.add_vip_as_secondary_ip(self.vcns, edge_id,
lb['vip_address'])
else:
lb_common.enable_edge_acceleration(self.vcns, edge_id)
edge_fw_rule_id = lb_common.add_vip_fw_rule(
self.vcns, edge_id, lb['id'], lb['vip_address'])
# set LB default rule
if not cfg.CONF.nsxv.use_routers_as_lbaas_platform:
lb_common.set_lb_firewall_default_rule(self.vcns, edge_id,
'accept')
nsxv_db.add_nsxv_lbaas_loadbalancer_binding(
context.session, lb['id'], edge_id, edge_fw_rule_id,
lb['vip_address'])
completor(success=True)
except nsxv_exc.VcnsApiException:
with excutils.save_and_reraise_exception():
completor(success=False)
LOG.error('Failed to create loadbalancer %s', lb['id'])
def update(self, context, old_lb, new_lb, completor):
completor(success=True)
def delete(self, context, lb, completor):
# Discard any ports which are associated with LB
filters = {
'device_id': [lb['id'], oct_const.DEVICE_ID_PREFIX + lb['id']],
'device_owner': [lb_common.LBAAS_DEVICE_OWNER]}
lb_ports = self.core_plugin.get_ports(context.elevated(),
filters=filters)
for lb_port in lb_ports:
self.core_plugin.delete_port(context.elevated(), lb_port['id'],
allow_delete_lb_if=True)
binding = nsxv_db.get_nsxv_lbaas_loadbalancer_binding(
context.session, lb['id'])
if binding:
edge_binding = nsxv_db.get_nsxv_router_binding_by_edge(
context.session, binding['edge_id'])
# set LB default rule
lb_common.set_lb_firewall_default_rule(
self.vcns, binding['edge_id'], 'deny')
if edge_binding:
old_lb = lb_common.is_lb_on_router_edge(
context, self.core_plugin, binding['edge_id'])
if not old_lb:
resource_id = lb_common.get_lb_resource_id(lb['id'])
self.core_plugin.edge_manager.delete_lrouter(
context, resource_id, dist=False)
else:
# Edge was created on an exclusive router with the old code
try:
lb_common.del_vip_fw_rule(
self.vcns, binding['edge_id'],
binding['edge_fw_rule_id'])
except nsxv_exc.VcnsApiException as e:
LOG.error('Failed to delete loadbalancer %(lb)s '
'FW rule. exception is %(exc)s',
{'lb': lb['id'], 'exc': e})
try:
lb_common.del_vip_as_secondary_ip(self.vcns,
binding['edge_id'],
lb['vip_address'])
except Exception as e:
LOG.error('Failed to delete loadbalancer %(lb)s '
'interface IP. exception is %(exc)s',
{'lb': lb['id'], 'exc': e})
nsxv_db.del_nsxv_lbaas_loadbalancer_binding(
context.session, lb['id'])
completor(success=True)
def delete_cascade(self, context, lb, completor):
#TODO(asarfaty): implement a better delete cascade for NSX-V
self.delete(context, lb, completor)
def refresh(self, context, lb):
# TODO(kobis): implement
pass
def stats(self, context, lb):
binding = nsxv_db.get_nsxv_lbaas_loadbalancer_binding(context.session,
lb['id'])
stats = _get_edge_loadbalancer_statistics(self.vcns,
binding['edge_id'])
return stats
def get_operating_status(self, context, id, with_members=False):
"""Return a map of the operating status of all connected LB objects """
lb_binding = nsxv_db.get_nsxv_lbaas_loadbalancer_binding(
context.session, id)
if not lb_binding or not lb_binding['edge_id']:
return {}
edge_id = lb_binding['edge_id']
lb_stats = self.vcns.get_loadbalancer_statistics(edge_id)
lb_status = (lb_const.ONLINE if lb_stats is not None
else lb_const.OFFLINE)
statuses = {lb_const.LOADBALANCERS: [{'id': id, 'status': lb_status}],
lb_const.LISTENERS: [],
lb_const.POOLS: [],
lb_const.MEMBERS: []}
for vs in lb_stats[1].get('virtualServer', []):
vs_id = vs['name'][4:]
vs_status = (lb_const.ONLINE if vs['status'] == 'OPEN'
else lb_const.OFFLINE)
statuses[lb_const.LISTENERS].append(
{'id': vs_id, 'status': vs_status})
for pool in lb_stats[1].get('pool', []):
pool_id = pool['name'][5:]
pool_status = (lb_const.ONLINE if pool['status'] == 'UP'
else lb_const.OFFLINE)
statuses[lb_const.POOLS].append(
{'id': pool_id, 'status': pool_status})
if with_members:
for member in pool.get('member', []):
member_id = member['name'][7:]
member_status = (lb_const.ONLINE
if member['status'] == 'UP'
else lb_const.OFFLINE)
statuses[lb_const.MEMBERS].append(
{'id': member_id, 'status': member_status})
return statuses
def _handle_subnet_gw_change(self, *args, **kwargs):
# As the Edge appliance doesn't use DHCP, we should change the
# default gateway here when the subnet GW changes.
context = kwargs.get('context')
orig = kwargs['original_subnet']
updated = kwargs['subnet']
if (orig['gateway_ip'] == updated['gateway_ip'] and
self._routes_equal(orig['host_routes'], updated['host_routes'])):
return
subnet_id = updated['id']
subnet = self.core_plugin.get_subnet(context.elevated(), subnet_id)
filters = {'fixed_ips': {'subnet_id': [subnet_id]},
'device_owner': [constants.DEVICE_OWNER_LOADBALANCERV2,
oct_const.DEVICE_OWNER_OCTAVIA]}
lb_ports = self.core_plugin.get_ports(context.elevated(),
filters=filters)
if lb_ports:
for lb_port in lb_ports:
if lb_port['device_id']:
device_id = lb_port['device_id']
if device_id.startswith(oct_const.DEVICE_ID_PREFIX):
device_id = device_id[len(oct_const.DEVICE_ID_PREFIX):]
edge_bind = nsxv_db.get_nsxv_lbaas_loadbalancer_binding(
context.session, device_id)
edge_id = edge_bind['edge_id']
routes = [{'cidr': r['destination'],
'nexthop': r['nexthop']} for r in
subnet['host_routes']]
self.core_plugin.nsx_v.update_routes(
edge_id, subnet['gateway_ip'], routes)
def _routes_equal(self, a, b):
if len(a) != len(b):
return False
for a_item in a:
found = False
for b_item in b:
# compare values as keysets should be same
if set(a_item.values()) == set(b_item.values()):
found = True
if not found:
return False
return True
def _get_edge_loadbalancer_statistics(vcns, edge_id):
stats = {'bytes_in': 0,
'bytes_out': 0,
'active_connections': 0,
'total_connections': 0}
try:
lb_stats = vcns.get_loadbalancer_statistics(edge_id)
except nsxv_exc.VcnsApiException:
msg = (_('Failed to read load balancer statistics, edge: %s') %
edge_id)
raise n_exc.BadRequest(resource='edge-lbaas', msg=msg)
pools_stats = lb_stats[1].get('pool', [])
for pool_stats in pools_stats:
stats['bytes_in'] += pool_stats.get('bytesIn', 0)
stats['bytes_out'] += pool_stats.get('bytesOut', 0)
stats['active_connections'] += pool_stats.get('curSessions', 0)
stats['total_connections'] += pool_stats.get('totalSessions', 0)
return stats