b43307b768
Most of this code will probably stay with us for quite some time, so let's make things easier and consider them as our way of doing RPC. blueprint oslo-messaging Change-Id: Iaf353b23f9c54b82d1e02a6bd5a5960cec827c88
246 lines
10 KiB
Python
246 lines
10 KiB
Python
# Copyright 2014 Cisco Systems, 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.
|
|
|
|
import netaddr
|
|
from netaddr import core as net_exc
|
|
|
|
from neutron.common import exceptions
|
|
from neutron.common import rpc as n_rpc
|
|
from neutron.openstack.common import excutils
|
|
from neutron.openstack.common import log as logging
|
|
from neutron.plugins.common import constants
|
|
from neutron.services.vpn.common import topics
|
|
from neutron.services.vpn import service_drivers
|
|
from neutron.services.vpn.service_drivers import cisco_csr_db as csr_id_map
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
IPSEC = 'ipsec'
|
|
BASE_IPSEC_VERSION = '1.0'
|
|
LIFETIME_LIMITS = {'IKE Policy': {'min': 60, 'max': 86400},
|
|
'IPSec Policy': {'min': 120, 'max': 2592000}}
|
|
MIN_CSR_MTU = 1500
|
|
MAX_CSR_MTU = 9192
|
|
|
|
|
|
class CsrValidationFailure(exceptions.BadRequest):
|
|
message = _("Cisco CSR does not support %(resource)s attribute %(key)s "
|
|
"with value '%(value)s'")
|
|
|
|
|
|
class CiscoCsrIPsecVpnDriverCallBack(n_rpc.RpcCallback):
|
|
|
|
"""Handler for agent to plugin RPC messaging."""
|
|
|
|
# history
|
|
# 1.0 Initial version
|
|
|
|
RPC_API_VERSION = BASE_IPSEC_VERSION
|
|
|
|
def __init__(self, driver):
|
|
super(CiscoCsrIPsecVpnDriverCallBack, self).__init__()
|
|
self.driver = driver
|
|
|
|
def get_vpn_services_on_host(self, context, host=None):
|
|
"""Retuns info on the vpnservices on the host."""
|
|
plugin = self.driver.service_plugin
|
|
vpnservices = plugin._get_agent_hosting_vpn_services(
|
|
context, host)
|
|
return [self.driver._make_vpnservice_dict(vpnservice, context)
|
|
for vpnservice in vpnservices]
|
|
|
|
def update_status(self, context, status):
|
|
"""Update status of all vpnservices."""
|
|
plugin = self.driver.service_plugin
|
|
plugin.update_status_by_agent(context, status)
|
|
|
|
|
|
class CiscoCsrIPsecVpnAgentApi(service_drivers.BaseIPsecVpnAgentApi,
|
|
n_rpc.RpcCallback):
|
|
|
|
"""API and handler for Cisco IPSec plugin to agent RPC messaging."""
|
|
|
|
RPC_API_VERSION = BASE_IPSEC_VERSION
|
|
|
|
def __init__(self, topic, default_version):
|
|
super(CiscoCsrIPsecVpnAgentApi, self).__init__(
|
|
topics.CISCO_IPSEC_AGENT_TOPIC, topic, default_version)
|
|
|
|
|
|
class CiscoCsrIPsecVPNDriver(service_drivers.VpnDriver):
|
|
|
|
"""Cisco CSR VPN Service Driver class for IPsec."""
|
|
|
|
def __init__(self, service_plugin):
|
|
super(CiscoCsrIPsecVPNDriver, self).__init__(service_plugin)
|
|
self.endpoints = [CiscoCsrIPsecVpnDriverCallBack(self)]
|
|
self.conn = n_rpc.create_connection(new=True)
|
|
self.conn.create_consumer(
|
|
topics.CISCO_IPSEC_DRIVER_TOPIC, self.endpoints, fanout=False)
|
|
self.conn.consume_in_threads()
|
|
self.agent_rpc = CiscoCsrIPsecVpnAgentApi(
|
|
topics.CISCO_IPSEC_AGENT_TOPIC, BASE_IPSEC_VERSION)
|
|
|
|
@property
|
|
def service_type(self):
|
|
return IPSEC
|
|
|
|
def validate_lifetime(self, for_policy, policy_info):
|
|
"""Ensure lifetime in secs and value is supported, based on policy."""
|
|
units = policy_info['lifetime']['units']
|
|
if units != 'seconds':
|
|
raise CsrValidationFailure(resource=for_policy,
|
|
key='lifetime:units',
|
|
value=units)
|
|
value = policy_info['lifetime']['value']
|
|
if (value < LIFETIME_LIMITS[for_policy]['min'] or
|
|
value > LIFETIME_LIMITS[for_policy]['max']):
|
|
raise CsrValidationFailure(resource=for_policy,
|
|
key='lifetime:value',
|
|
value=value)
|
|
|
|
def validate_ike_version(self, policy_info):
|
|
"""Ensure IKE policy is v1 for current REST API."""
|
|
version = policy_info['ike_version']
|
|
if version != 'v1':
|
|
raise CsrValidationFailure(resource='IKE Policy',
|
|
key='ike_version',
|
|
value=version)
|
|
|
|
def validate_mtu(self, conn_info):
|
|
"""Ensure the MTU value is supported."""
|
|
mtu = conn_info['mtu']
|
|
if mtu < MIN_CSR_MTU or mtu > MAX_CSR_MTU:
|
|
raise CsrValidationFailure(resource='IPSec Connection',
|
|
key='mtu',
|
|
value=mtu)
|
|
|
|
def validate_public_ip_present(self, vpn_service):
|
|
"""Ensure there is one gateway IP specified for the router used."""
|
|
gw_port = vpn_service.router.gw_port
|
|
if not gw_port or len(gw_port.fixed_ips) != 1:
|
|
raise CsrValidationFailure(resource='IPSec Connection',
|
|
key='router:gw_port:ip_address',
|
|
value='missing')
|
|
|
|
def validate_peer_id(self, ipsec_conn):
|
|
"""Ensure that an IP address is specified for peer ID."""
|
|
# TODO(pcm) Should we check peer_address too?
|
|
peer_id = ipsec_conn['peer_id']
|
|
try:
|
|
netaddr.IPAddress(peer_id)
|
|
except net_exc.AddrFormatError:
|
|
raise CsrValidationFailure(resource='IPSec Connection',
|
|
key='peer_id', value=peer_id)
|
|
|
|
def validate_ipsec_connection(self, context, ipsec_conn, vpn_service):
|
|
"""Validate attributes w.r.t. Cisco CSR capabilities."""
|
|
ike_policy = self.service_plugin.get_ikepolicy(
|
|
context, ipsec_conn['ikepolicy_id'])
|
|
ipsec_policy = self.service_plugin.get_ipsecpolicy(
|
|
context, ipsec_conn['ipsecpolicy_id'])
|
|
self.validate_lifetime('IKE Policy', ike_policy)
|
|
self.validate_lifetime('IPSec Policy', ipsec_policy)
|
|
self.validate_ike_version(ike_policy)
|
|
self.validate_mtu(ipsec_conn)
|
|
self.validate_public_ip_present(vpn_service)
|
|
self.validate_peer_id(ipsec_conn)
|
|
LOG.debug(_("IPSec connection %s validated for Cisco CSR"),
|
|
ipsec_conn['id'])
|
|
|
|
def create_ipsec_site_connection(self, context, ipsec_site_connection):
|
|
vpnservice = self.service_plugin._get_vpnservice(
|
|
context, ipsec_site_connection['vpnservice_id'])
|
|
try:
|
|
self.validate_ipsec_connection(context, ipsec_site_connection,
|
|
vpnservice)
|
|
except CsrValidationFailure:
|
|
with excutils.save_and_reraise_exception():
|
|
self.service_plugin.update_ipsec_site_conn_status(
|
|
context, ipsec_site_connection['id'], constants.ERROR)
|
|
csr_id_map.create_tunnel_mapping(context, ipsec_site_connection)
|
|
self.agent_rpc.vpnservice_updated(context, vpnservice['router_id'],
|
|
reason='ipsec-conn-create')
|
|
|
|
def update_ipsec_site_connection(
|
|
self, context, old_ipsec_site_connection, ipsec_site_connection):
|
|
vpnservice = self.service_plugin._get_vpnservice(
|
|
context, ipsec_site_connection['vpnservice_id'])
|
|
self.agent_rpc.vpnservice_updated(
|
|
context, vpnservice['router_id'],
|
|
reason='ipsec-conn-update')
|
|
|
|
def delete_ipsec_site_connection(self, context, ipsec_site_connection):
|
|
vpnservice = self.service_plugin._get_vpnservice(
|
|
context, ipsec_site_connection['vpnservice_id'])
|
|
self.agent_rpc.vpnservice_updated(context, vpnservice['router_id'],
|
|
reason='ipsec-conn-delete')
|
|
|
|
def create_ikepolicy(self, context, ikepolicy):
|
|
pass
|
|
|
|
def delete_ikepolicy(self, context, ikepolicy):
|
|
pass
|
|
|
|
def update_ikepolicy(self, context, old_ikepolicy, ikepolicy):
|
|
pass
|
|
|
|
def create_ipsecpolicy(self, context, ipsecpolicy):
|
|
pass
|
|
|
|
def delete_ipsecpolicy(self, context, ipsecpolicy):
|
|
pass
|
|
|
|
def update_ipsecpolicy(self, context, old_ipsec_policy, ipsecpolicy):
|
|
pass
|
|
|
|
def create_vpnservice(self, context, vpnservice):
|
|
pass
|
|
|
|
def update_vpnservice(self, context, old_vpnservice, vpnservice):
|
|
self.agent_rpc.vpnservice_updated(context, vpnservice['router_id'],
|
|
reason='vpn-service-update')
|
|
|
|
def delete_vpnservice(self, context, vpnservice):
|
|
self.agent_rpc.vpnservice_updated(context, vpnservice['router_id'],
|
|
reason='vpn-service-delete')
|
|
|
|
def get_cisco_connection_mappings(self, conn_id, context):
|
|
"""Obtain persisted mappings for IDs related to connection."""
|
|
tunnel_id, ike_id, ipsec_id = csr_id_map.get_tunnel_mapping_for(
|
|
conn_id, context.session)
|
|
return {'site_conn_id': u'Tunnel%d' % tunnel_id,
|
|
'ike_policy_id': u'%d' % ike_id,
|
|
'ipsec_policy_id': u'%s' % ipsec_id}
|
|
|
|
def _make_vpnservice_dict(self, vpnservice, context):
|
|
"""Collect all info on service, including Cisco info per IPSec conn."""
|
|
vpnservice_dict = dict(vpnservice)
|
|
vpnservice_dict['ipsec_conns'] = []
|
|
vpnservice_dict['subnet'] = dict(
|
|
vpnservice.subnet)
|
|
vpnservice_dict['external_ip'] = vpnservice.router.gw_port[
|
|
'fixed_ips'][0]['ip_address']
|
|
for ipsec_conn in vpnservice.ipsec_site_connections:
|
|
ipsec_conn_dict = dict(ipsec_conn)
|
|
ipsec_conn_dict['ike_policy'] = dict(ipsec_conn.ikepolicy)
|
|
ipsec_conn_dict['ipsec_policy'] = dict(ipsec_conn.ipsecpolicy)
|
|
ipsec_conn_dict['peer_cidrs'] = [
|
|
peer_cidr.cidr for peer_cidr in ipsec_conn.peer_cidrs]
|
|
ipsec_conn_dict['cisco'] = self.get_cisco_connection_mappings(
|
|
ipsec_conn['id'], context)
|
|
vpnservice_dict['ipsec_conns'].append(ipsec_conn_dict)
|
|
return vpnservice_dict
|