openstack/neutron-lbaas
Code Issues Proposed changes
db91897560
neutron-lbaas/neutron/db/securitygroups_rpc_base.py
Mark McClain ee3fe4e836 Rename Quantum to Neutron 
This change renames everything to Neutron while providing backwards
compatible adjustments for Grizzly configuration files.

implements blueprint: remove-use-of-quantum

Change-Id: Ie7d07ba7c89857e13d4ddc8f0e9b68de020a3d19
2013-07-06 15:02:43 -04:00

303 lines
13 KiB
Python
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
#
# Copyright 2012, Nachi Ueno, NTT MCL, 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 neutron.common import constants as q_const
from neutron.common import utils
from neutron.db import models_v2
from neutron.db import securitygroups_db as sg_db
from neutron.extensions import securitygroup as ext_sg
from neutron.openstack.common import log as logging
LOG = logging.getLogger(__name__)
IP_MASK = {q_const.IPv4: 32,
q_const.IPv6: 128}
DIRECTION_IP_PREFIX = {'ingress': 'source_ip_prefix',
'egress': 'dest_ip_prefix'}
class SecurityGroupServerRpcMixin(sg_db.SecurityGroupDbMixin):
def create_security_group_rule(self, context, security_group_rule):
bulk_rule = {'security_group_rules': [security_group_rule]}
rule = self.create_security_group_rule_bulk_native(context,
bulk_rule)[0]
sgids = [rule['security_group_id']]
self.notifier.security_groups_rule_updated(context, sgids)
return rule
def create_security_group_rule_bulk(self, context,
security_group_rule):
rules = super(SecurityGroupServerRpcMixin,
self).create_security_group_rule_bulk_native(
context, security_group_rule)
sgids = set([r['security_group_id'] for r in rules])
self.notifier.security_groups_rule_updated(context, list(sgids))
return rules
def delete_security_group_rule(self, context, sgrid):
rule = self.get_security_group_rule(context, sgrid)
super(SecurityGroupServerRpcMixin,
self).delete_security_group_rule(context, sgrid)
self.notifier.security_groups_rule_updated(context,
[rule['security_group_id']])
def update_security_group_on_port(self, context, id, port,
original_port, updated_port):
"""Update security groups on port.
This method returns a flag which indicates request notification
is required and does not perform notification itself.
It is because another changes for the port may require notification.
"""
need_notify = False
if ext_sg.SECURITYGROUPS in port['port']:
# delete the port binding and read it with the new rules
port['port'][ext_sg.SECURITYGROUPS] = (
self._get_security_groups_on_port(context, port))
self._delete_port_security_group_bindings(context, id)
self._process_port_create_security_group(
context,
updated_port,
port['port'][ext_sg.SECURITYGROUPS])
need_notify = True
else:
updated_port[ext_sg.SECURITYGROUPS] = (
original_port[ext_sg.SECURITYGROUPS])
return need_notify
def is_security_group_member_updated(self, context,
original_port, updated_port):
"""Check security group member updated or not.
This method returns a flag which indicates request notification
is required and does not perform notification itself.
It is because another changes for the port may require notification.
"""
need_notify = False
if (original_port['fixed_ips'] != updated_port['fixed_ips'] or
not utils.compare_elements(
original_port.get(ext_sg.SECURITYGROUPS),
updated_port.get(ext_sg.SECURITYGROUPS))):
self.notify_security_groups_member_updated(
context, updated_port)
need_notify = True
return need_notify
def notify_security_groups_member_updated(self, context, port):
"""Notify update event of security group members.
The agent setups the iptables rule to allow
ingress packet from the dhcp server (as a part of provider rules),
so we need to notify an update of dhcp server ip
address to the plugin agent.
security_groups_provider_updated() just notifies that an event
occurs and the plugin agent fetches the update provider
rule in the other RPC call (security_group_rules_for_devices).
"""
if port['device_owner'] == q_const.DEVICE_OWNER_DHCP:
self.notifier.security_groups_provider_updated(context)
else:
self.notifier.security_groups_member_updated(
context, port.get(ext_sg.SECURITYGROUPS))
class SecurityGroupServerRpcCallbackMixin(object):
"""A mix-in that enable SecurityGroup agent support in plugin
implementations.
"""
def security_group_rules_for_devices(self, context, **kwargs):
"""Return security group rules for each port.
also convert remote_group_id rule
to source_ip_prefix and dest_ip_prefix rule
:params devices: list of devices
:returns: port correspond to the devices with security group rules
"""
devices = kwargs.get('devices')
ports = {}
for device in devices:
port = self.get_port_from_device(device)
if not port:
continue
if port['device_owner'].startswith('network:'):
continue
ports[port['id']] = port
return self._security_group_rules_for_ports(context, ports)
def _select_rules_for_ports(self, context, ports):
if not ports:
return []
sg_binding_port = sg_db.SecurityGroupPortBinding.port_id
sg_binding_sgid = sg_db.SecurityGroupPortBinding.security_group_id
sgr_sgid = sg_db.SecurityGroupRule.security_group_id
query = context.session.query(sg_db.SecurityGroupPortBinding,
sg_db.SecurityGroupRule)
query = query.join(sg_db.SecurityGroupRule,
sgr_sgid == sg_binding_sgid)
query = query.filter(sg_binding_port.in_(ports.keys()))
return query.all()
def _select_ips_for_remote_group(self, context, remote_group_ids):
ips_by_group = {}
if not remote_group_ids:
return ips_by_group
for remote_group_id in remote_group_ids:
ips_by_group[remote_group_id] = []
ip_port = models_v2.IPAllocation.port_id
sg_binding_port = sg_db.SecurityGroupPortBinding.port_id
sg_binding_sgid = sg_db.SecurityGroupPortBinding.security_group_id
query = context.session.query(sg_binding_sgid,
models_v2.IPAllocation.ip_address)
query = query.join(models_v2.IPAllocation,
ip_port == sg_binding_port)
query = query.filter(sg_binding_sgid.in_(remote_group_ids))
for security_group_id, ip_address in query:
ips_by_group[security_group_id].append(ip_address)
return ips_by_group
def _select_remote_group_ids(self, ports):
remote_group_ids = []
for port in ports.values():
for rule in port.get('security_group_rules'):
remote_group_id = rule.get('remote_group_id')
if remote_group_id:
remote_group_ids.append(remote_group_id)
return remote_group_ids
def _select_network_ids(self, ports):
return set((port['network_id'] for port in ports.values()))
def _select_dhcp_ips_for_network_ids(self, context, network_ids):
if not network_ids:
return {}
query = context.session.query(models_v2.Port,
models_v2.IPAllocation.ip_address)
query = query.join(models_v2.IPAllocation)
query = query.filter(models_v2.Port.network_id.in_(network_ids))
owner = q_const.DEVICE_OWNER_DHCP
query = query.filter(models_v2.Port.device_owner == owner)
ips = {}
for network_id in network_ids:
ips[network_id] = []
for port, ip in query:
ips[port['network_id']].append(ip)
return ips
def _convert_remote_group_id_to_ip_prefix(self, context, ports):
remote_group_ids = self._select_remote_group_ids(ports)
ips = self._select_ips_for_remote_group(context, remote_group_ids)
for port in ports.values():
updated_rule = []
for rule in port.get('security_group_rules'):
remote_group_id = rule.get('remote_group_id')
direction = rule.get('direction')
direction_ip_prefix = DIRECTION_IP_PREFIX[direction]
if not remote_group_id:
updated_rule.append(rule)
continue
port['security_group_source_groups'].append(remote_group_id)
base_rule = rule
for ip in ips[remote_group_id]:
if ip in port.get('fixed_ips', []):
continue
ip_rule = base_rule.copy()
version = netaddr.IPAddress(ip).version
ethertype = 'IPv%s' % version
if base_rule['ethertype'] != ethertype:
continue
ip_rule[direction_ip_prefix] = "%s/%s" % (
ip, IP_MASK[ethertype])
updated_rule.append(ip_rule)
port['security_group_rules'] = updated_rule
return ports
def _add_ingress_dhcp_rule(self, port, ips):
dhcp_ips = ips.get(port['network_id'])
for dhcp_ip in dhcp_ips:
if not netaddr.IPAddress(dhcp_ip).version == 4:
return
dhcp_rule = {'direction': 'ingress',
'ethertype': q_const.IPv4,
'protocol': 'udp',
'port_range_min': 68,
'port_range_max': 68,
'source_port_range_min': 67,
'source_port_range_max': 67}
dhcp_rule['source_ip_prefix'] = "%s/%s" % (dhcp_ip,
IP_MASK[q_const.IPv4])
port['security_group_rules'].append(dhcp_rule)
def _add_ingress_ra_rule(self, port, ips):
ra_ips = ips.get(port['network_id'])
for ra_ip in ra_ips:
if not netaddr.IPAddress(ra_ip).version == 6:
return
ra_rule = {'direction': 'ingress',
'ethertype': q_const.IPv6,
'protocol': 'icmp'}
ra_rule['source_ip_prefix'] = "%s/%s" % (ra_ip,
IP_MASK[q_const.IPv6])
port['security_group_rules'].append(ra_rule)
def _apply_provider_rule(self, context, ports):
network_ids = self._select_network_ids(ports)
ips = self._select_dhcp_ips_for_network_ids(context, network_ids)
for port in ports.values():
self._add_ingress_ra_rule(port, ips)
self._add_ingress_dhcp_rule(port, ips)
def _security_group_rules_for_ports(self, context, ports):
rules_in_db = self._select_rules_for_ports(context, ports)
for (binding, rule_in_db) in rules_in_db:
port_id = binding['port_id']
port = ports[port_id]
direction = rule_in_db['direction']
rule_dict = {
'security_group_id': rule_in_db['security_group_id'],
'direction': direction,
'ethertype': rule_in_db['ethertype'],
}
for key in ('protocol', 'port_range_min', 'port_range_max',
'remote_ip_prefix', 'remote_group_id'):
if rule_in_db.get(key):
if key == 'remote_ip_prefix':
direction_ip_prefix = DIRECTION_IP_PREFIX[direction]
rule_dict[direction_ip_prefix] = rule_in_db[key]
continue
rule_dict[key] = rule_in_db[key]
port['security_group_rules'].append(rule_dict)
self._apply_provider_rule(context, ports)
return self._convert_remote_group_id_to_ip_prefix(context, ports)
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