vmware-nsx/quantum/plugins/linuxbridge/db/l2network_db_v2.py
Gary Kotton c117074a4b Remove locals() from strings substitutions
Fixes bug 1168988

Change-Id: Ifd1e7a027f16062ff35e777cf2d953f652a806a7
2013-04-20 11:56:26 +00:00

243 lines
9.8 KiB
Python

# Copyright (c) 2012 OpenStack Foundation.
#
# 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 sqlalchemy.orm import exc
from quantum.common import exceptions as q_exc
import quantum.db.api as db
from quantum.db import models_v2
from quantum.db import securitygroups_db as sg_db
from quantum import manager
from quantum.openstack.common import log as logging
from quantum.plugins.linuxbridge.common import config # noqa
from quantum.plugins.linuxbridge.common import constants
from quantum.plugins.linuxbridge.db import l2network_models_v2
LOG = logging.getLogger(__name__)
def initialize():
db.configure_db()
def sync_network_states(network_vlan_ranges):
"""Synchronize network_states table with current configured VLAN ranges."""
session = db.get_session()
with session.begin():
# get existing allocations for all physical networks
allocations = dict()
states = (session.query(l2network_models_v2.NetworkState).
all())
for state in states:
if state.physical_network not in allocations:
allocations[state.physical_network] = set()
allocations[state.physical_network].add(state)
# process vlan ranges for each configured physical network
for physical_network, vlan_ranges in network_vlan_ranges.iteritems():
# determine current configured allocatable vlans for this
# physical network
vlan_ids = set()
for vlan_range in vlan_ranges:
vlan_ids |= set(xrange(vlan_range[0], vlan_range[1] + 1))
# remove from table unallocated vlans not currently allocatable
if physical_network in allocations:
for state in allocations[physical_network]:
try:
# see if vlan is allocatable
vlan_ids.remove(state.vlan_id)
except KeyError:
# it's not allocatable, so check if its allocated
if not state.allocated:
# it's not, so remove it from table
LOG.debug(_("Removing vlan %(vlan_id)s on "
"physical network %(physical_network)s"
" from pool"),
{'vlan_id': state.vlan_id,
'physical_network': physical_network})
session.delete(state)
del allocations[physical_network]
# add missing allocatable vlans to table
for vlan_id in sorted(vlan_ids):
state = l2network_models_v2.NetworkState(physical_network,
vlan_id)
session.add(state)
# remove from table unallocated vlans for any unconfigured physical
# networks
for states in allocations.itervalues():
for state in states:
if not state.allocated:
LOG.debug(_("Removing vlan %(vlan_id)s on physical "
"network %(physical_network)s"
" from pool"),
{'vlan_id': state.vlan_id,
'physical_network': physical_network})
session.delete(state)
def get_network_state(physical_network, vlan_id):
"""Get state of specified network."""
session = db.get_session()
try:
state = (session.query(l2network_models_v2.NetworkState).
filter_by(physical_network=physical_network,
vlan_id=vlan_id).
one())
return state
except exc.NoResultFound:
return None
def reserve_network(session):
with session.begin(subtransactions=True):
state = (session.query(l2network_models_v2.NetworkState).
filter_by(allocated=False).
with_lockmode('update').
first())
if not state:
raise q_exc.NoNetworkAvailable()
LOG.debug(_("Reserving vlan %(vlan_id)s on physical network "
"%(physical_network)s from pool"),
{'vlan_id': state.vlan_id,
'physical_network': state.physical_network})
state.allocated = True
return (state.physical_network, state.vlan_id)
def reserve_specific_network(session, physical_network, vlan_id):
with session.begin(subtransactions=True):
try:
state = (session.query(l2network_models_v2.NetworkState).
filter_by(physical_network=physical_network,
vlan_id=vlan_id).
with_lockmode('update').
one())
if state.allocated:
if vlan_id == constants.FLAT_VLAN_ID:
raise q_exc.FlatNetworkInUse(
physical_network=physical_network)
else:
raise q_exc.VlanIdInUse(vlan_id=vlan_id,
physical_network=physical_network)
LOG.debug(_("Reserving specific vlan %(vlan_id)s on physical "
"network %(physical_network)s from pool"),
{'vlan_id': vlan_id,
'physical_network': physical_network})
state.allocated = True
except exc.NoResultFound:
LOG.debug(_("Reserving specific vlan %(vlan_id)s on physical "
"network %(physical_network)s outside pool"),
{'vlan_id': vlan_id,
'physical_network': physical_network})
state = l2network_models_v2.NetworkState(physical_network, vlan_id)
state.allocated = True
session.add(state)
def release_network(session, physical_network, vlan_id, network_vlan_ranges):
with session.begin(subtransactions=True):
try:
state = (session.query(l2network_models_v2.NetworkState).
filter_by(physical_network=physical_network,
vlan_id=vlan_id).
with_lockmode('update').
one())
state.allocated = False
inside = False
for vlan_range in network_vlan_ranges.get(physical_network, []):
if vlan_id >= vlan_range[0] and vlan_id <= vlan_range[1]:
inside = True
break
if inside:
LOG.debug(_("Releasing vlan %(vlan_id)s on physical network "
"%(physical_network)s to pool"),
{'vlan_id': vlan_id,
'physical_network': physical_network})
else:
LOG.debug(_("Releasing vlan %(vlan_id)s on physical network "
"%(physical_network)s outside pool"),
{'vlan_id': vlan_id,
'physical_network': physical_network})
session.delete(state)
except exc.NoResultFound:
LOG.warning(_("vlan_id %(vlan_id)s on physical network "
"%(physical_network)s not found"),
{'vlan_id': vlan_id,
'physical_network': physical_network})
def add_network_binding(session, network_id, physical_network, vlan_id):
with session.begin(subtransactions=True):
binding = l2network_models_v2.NetworkBinding(network_id,
physical_network, vlan_id)
session.add(binding)
def get_network_binding(session, network_id):
try:
binding = (session.query(l2network_models_v2.NetworkBinding).
filter_by(network_id=network_id).
one())
return binding
except exc.NoResultFound:
return
def get_port_from_device(device):
"""Get port from database."""
LOG.debug(_("get_port_from_device() called"))
session = db.get_session()
sg_binding_port = sg_db.SecurityGroupPortBinding.port_id
query = session.query(models_v2.Port,
sg_db.SecurityGroupPortBinding.security_group_id)
query = query.outerjoin(sg_db.SecurityGroupPortBinding,
models_v2.Port.id == sg_binding_port)
query = query.filter(models_v2.Port.id.startswith(device))
port_and_sgs = query.all()
if not port_and_sgs:
return
port = port_and_sgs[0][0]
plugin = manager.QuantumManager.get_plugin()
port_dict = plugin._make_port_dict(port)
port_dict['security_groups'] = []
for port_in_db, sg_id in port_and_sgs:
if sg_id:
port_dict['security_groups'].append(sg_id)
port_dict['security_group_rules'] = []
port_dict['security_group_source_groups'] = []
port_dict['fixed_ips'] = [ip['ip_address']
for ip in port['fixed_ips']]
return port_dict
def set_port_status(port_id, status):
"""Set the port status."""
LOG.debug(_("set_port_status as %s called"), status)
session = db.get_session()
try:
port = session.query(models_v2.Port).filter_by(id=port_id).one()
port['status'] = status
session.merge(port)
session.flush()
except exc.NoResultFound:
raise q_exc.PortNotFound(port_id=port_id)