def reserve_specific_vlan(session, physical_network, vlan_id):
with session.begin(subtransactions=True):
try:
alloc = (session.query(ovs_models_v2.VlanAllocation).filter_by(
physical_network=physical_network,
vlan_id=vlan_id).with_lockmode('update').one())
if alloc.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
})
alloc.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
})
alloc = ovs_models_v2.VlanAllocation(physical_network, vlan_id)
alloc.allocated = True
session.add(alloc)
def reserve_provider_segment(self, session, segment):
physical_network = segment[api.PHYSICAL_NETWORK]
with session.begin(subtransactions=True):
try:
alloc = (session.query(FlatAllocation).filter_by(
physical_network=physical_network).with_lockmode(
'update').one())
raise exc.FlatNetworkInUse(physical_network=physical_network)
except sa.orm.exc.NoResultFound:
LOG.debug(
_("Reserving flat network on physical "
"network %s"), physical_network)
alloc = FlatAllocation(physical_network=physical_network)
session.add(alloc)
def reserve_specific_vlan(self, session, physical_network, vlan_id):
with session.begin(subtransactions=True):
try:
alloc_q = session.query(hyperv_model.VlanAllocation)
alloc_q = alloc_q.filter_by(physical_network=physical_network,
vlan_id=vlan_id)
alloc = alloc_q.one()
if alloc.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"), locals())
alloc.allocated = True
except exc.NoResultFound:
raise q_exc.NoNetworkAvailable()
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).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 %s on physical network %s "
"from pool" % (vlan_id, physical_network))
state.allocated = True
except exc.NoResultFound:
LOG.debug("reserving specific vlan %s on physical network %s "
"outside pool" % (vlan_id, physical_network))
state = l2network_models_v2.NetworkState(physical_network, vlan_id)
state.allocated = True
session.add(state)