def allocate_tenant_segment(self, session):
for network_type in self.tenant_network_types:
driver = self.drivers.get(network_type)
segment = driver.obj.allocate_tenant_segment(session)
if segment:
return segment
raise exc.NoNetworkAvailable()
def reserve_provider_segment(self, session, segment):
filters = {}
physical_network = segment.get(api.PHYSICAL_NETWORK)
if physical_network is not None:
filters['physical_network'] = physical_network
vlan_id = segment.get(api.SEGMENTATION_ID)
if vlan_id is not None:
filters['vlan_id'] = vlan_id
if self.is_partial_segment(segment):
alloc = self.allocate_partially_specified_segment(
session, **filters)
if not alloc:
raise exc.NoNetworkAvailable()
else:
alloc = self.allocate_fully_specified_segment(session, **filters)
if not alloc:
raise exc.VlanIdInUse(**filters)
return {
api.NETWORK_TYPE: p_const.TYPE_VLAN,
api.PHYSICAL_NETWORK: alloc.physical_network,
api.SEGMENTATION_ID: alloc.vlan_id,
api.MTU: self.get_mtu(alloc.physical_network)
}
def reserve_tunnel(session):
with session.begin(subtransactions=True):
alloc = (session.query(ovs_models_v2.TunnelAllocation).filter_by(
allocated=False).with_lockmode('update').first())
if alloc:
LOG.debug(_("Reserving tunnel %s from pool"), alloc.tunnel_id)
alloc.allocated = True
return alloc.tunnel_id
raise q_exc.NoNetworkAvailable()
def reserve_vlan(self, session):
with session.begin(subtransactions=True):
alloc = (session.query(OmniVlanAllocation).
filter_by(allocated=False).
first())
if alloc:
LOG.debug("reserving vlan %s on physical network %s from pool" %
(alloc.vlan_id, alloc.physical_network))
alloc.allocated = True
return (alloc.physical_network, alloc.vlan_id)
raise q_exc.NoNetworkAvailable()
def reserve_flat_net(self, session):
with session.begin(subtransactions=True):
alloc_q = session.query(hyperv_model.VlanAllocation)
alloc_q = alloc_q.filter_by(allocated=False,
vlan_id=constants.FLAT_VLAN_ID)
alloc = alloc_q.first()
if alloc:
LOG.debug(_("Reserving flat physical network "
"%(physical_network)s from pool"),
{'physical_network': alloc.physical_network})
alloc.allocated = True
return alloc.physical_network
raise n_exc.NoNetworkAvailable()
def reserve_vlan(self, session):
with session.begin(subtransactions=True):
alloc_q = session.query(hyperv_model.VlanAllocation)
alloc_q = alloc_q.filter_by(allocated=False)
alloc = alloc_q.first()
if alloc:
LOG.debug(_("Reserving vlan %(vlan_id)s on physical network "
"%(physical_network)s from pool"),
{'vlan_id': alloc.vlan_id,
'physical_network': alloc.physical_network})
alloc.allocated = True
return (alloc.physical_network, alloc.vlan_id)
raise n_exc.NoNetworkAvailable()
def reserve_network(session):
with session.begin(subtransactions=True):
entry = (session.query(mlnx_models_v2.SegmentationIdAllocation).
filter_by(allocated=False).
first())
if not entry:
raise q_exc.NoNetworkAvailable()
LOG.debug(_("Reserving vlan %(seg_id)s on physical network "
"%(net)s from pool"),
{'seg_id': entry.segmentation_id,
'net': entry.physical_network})
entry.allocated = True
return (entry.physical_network, entry.segmentation_id)
def reserve_vlan(session):
with session.begin(subtransactions=True):
alloc = (session.query(ovs_models_v2.VlanAllocation).filter_by(
allocated=False).with_lockmode('update').first())
if alloc:
LOG.debug(
_("Reserving vlan %(vlan_id)s on physical network "
"%(physical_network)s from pool"), {
'vlan_id': alloc.vlan_id,
'physical_network': alloc.physical_network
})
alloc.allocated = True
return (alloc.physical_network, alloc.vlan_id)
raise q_exc.NoNetworkAvailable()
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 n_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_provider_segment(self, session, segment):
if self.is_partial_segment(segment):
alloc = self.allocate_partially_specified_segment(session)
if not alloc:
raise exc.NoNetworkAvailable()
else:
segmentation_id = segment.get(api.SEGMENTATION_ID)
alloc = self.allocate_fully_specified_segment(
session, **{self.segmentation_key: segmentation_id})
if not alloc:
raise exc.TunnelIdInUse(tunnel_id=segmentation_id)
return {api.NETWORK_TYPE: self.get_type(),
api.PHYSICAL_NETWORK: None,
api.SEGMENTATION_ID: getattr(alloc, self.segmentation_key)}
def reserve_vlan(db_session, network_profile):
"""
Reserve a VLAN ID within the range of the network profile.
:param db_session: database session
:param network_profile: network profile object
"""
seg_min, seg_max = get_segment_range(network_profile)
segment_type = c_const.NETWORK_TYPE_VLAN
with db_session.begin(subtransactions=True):
alloc = (db_session.query(n1kv_models_v2.N1kvVlanAllocation).filter(
and_(n1kv_models_v2.N1kvVlanAllocation.vlan_id >= seg_min,
n1kv_models_v2.N1kvVlanAllocation.vlan_id <= seg_max,
n1kv_models_v2.N1kvVlanAllocation.allocated == False))
).first()
if alloc:
segment_id = alloc.vlan_id
physical_network = alloc.physical_network
alloc.allocated = True
return (physical_network, segment_type, segment_id, "0.0.0.0")
raise q_exc.NoNetworkAvailable()
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 n_exc.FlatNetworkInUse(
physical_network=physical_network)
else:
raise n_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:
raise n_exc.NoNetworkAvailable()
def _allocate_ext_net_segment(self, session):
network_type = cfg.CONF.ml2.external_network_type
segment = self._allocate_segment(session, network_type)
if segment:
return segment
raise exc.NoNetworkAvailable()
def _allocate_tenant_net_segment(self, session):
for network_type in self.tenant_network_types:
segment = self._allocate_segment(session, network_type)
if segment:
return segment
raise exc.NoNetworkAvailable()
