def _save(self, context, tenant_id, network_id, router_id, subnets):
"""Save auto-allocated topology, or revert in case of DB errors."""
try:
auto_allocate_obj.AutoAllocatedTopology(
context,
project_id=tenant_id,
network_id=network_id,
router_id=router_id).create()
self.core_plugin.update_network(
context, network_id, {'network': {
'admin_state_up': True
}})
except obj_exc.NeutronDbObjectDuplicateEntry:
LOG.debug(
"Multiple auto-allocated networks detected for "
"tenant %s. Attempting clean up for network %s "
"and router %s.", tenant_id, network_id, router_id)
self._cleanup(context,
network_id=network_id,
router_id=router_id,
subnets=subnets)
network_id = self._get_auto_allocated_network(context, tenant_id)
except Exception as e:
raise exceptions.UnknownProvisioningError(e,
network_id=network_id,
router_id=router_id,
subnets=subnets)
return network_id
def _provision_external_connectivity(
self, context, default_external_network, subnets, tenant_id):
"""Uplink tenant subnet(s) to external network."""
router_args = {
'name': 'auto_allocated_router',
l3.EXTERNAL_GW_INFO: {'network_id': default_external_network},
'tenant_id': tenant_id,
'admin_state_up': True
}
router = None
attached_subnets = []
try:
router = self.l3_plugin.create_router(
context, {'router': router_args})
for subnet in subnets:
self.l3_plugin.add_router_interface(
context, router['id'], {'subnet_id': subnet['id']})
attached_subnets.append(subnet)
return router
except n_exc.BadRequest as e:
LOG.error(_LE("Unable to auto allocate topology for tenant "
"%(tenant_id)s because of router errors. "
"Reason: %(reason)s"),
{'tenant_id': tenant_id, 'reason': e})
router_id = router['id'] if router else None
self._cleanup(context,
network_id=subnets[0]['network_id'],
router_id=router_id, subnets=attached_subnets)
raise exceptions.AutoAllocationFailure(
reason=_("Unable to provide external connectivity"))
except Exception as e:
router_id = router['id'] if router else None
raise exceptions.UnknownProvisioningError(
e, network_id=subnets[0]['network_id'],
router_id=router_id, subnets=subnets)
def _save(self, context, tenant_id, network_id, router_id, subnets):
"""Save auto-allocated topology, or revert in case of DB errors."""
try:
# NOTE(armax): saving the auto allocated topology in a
# separate transaction will keep the Neutron DB and the
# Neutron plugin backend in sync, thus allowing for a
# more bullet proof cleanup. Any other error will have
# to bubble up.
with context.session.begin(subtransactions=True):
context.session.add(
models.AutoAllocatedTopology(
tenant_id=tenant_id,
network_id=network_id,
router_id=router_id))
self.core_plugin.update_network(
context, network_id,
{'network': {'admin_state_up': True}})
except db_exc.DBDuplicateEntry:
LOG.debug("Multiple auto-allocated networks detected for "
"tenant %s. Attempting clean up for network %s "
"and router %s.",
tenant_id, network_id, router_id)
self._cleanup(
context, network_id=network_id,
router_id=router_id, subnets=subnets)
network_id = self._get_auto_allocated_network(context, tenant_id)
except Exception as e:
raise exceptions.UnknownProvisioningError(
e, network_id=network_id,
router_id=router_id, subnets=subnets)
return network_id
def test__build_topology_error_network_with_router(self):
provisioning_exception = exceptions.UnknownProvisioningError(
KeyError, network_id='foo_n', router_id='foo_r')
with mock.patch.object(self.mixin,
'_provision_tenant_private_network') as f:
f.return_value = [{'network_id': 'foo_n'}]
self._test__build_topology('_provision_external_connectivity',
provisioning_exception)
def test__build_topology_error_only_network_again(self):
provisioning_exception = exceptions.UnknownProvisioningError(
AttributeError, network_id='foo')
with mock.patch.object(self.mixin,
'_provision_tenant_private_network') as f:
f.return_value = [{'network_id': 'foo'}]
self._test__build_topology('_provision_external_connectivity',
provisioning_exception)
def test__build_topology_error_network_with_router_and_interfaces(self):
provisioning_exception = exceptions.UnknownProvisioningError(
db_exc.DBConnectionError,
network_id='foo_n', router_id='foo_r', subnets=[{'id': 'foo_s'}])
with mock.patch.object(self.mixin,
'_provision_tenant_private_network') as f,\
mock.patch.object(self.mixin,
'_provision_external_connectivity') as g:
f.return_value = [{'network_id': 'foo_n'}]
g.return_value = {'id': 'foo_r'}
self._test__build_topology(
'_save',
provisioning_exception)
def _provision_tenant_private_network(self, context, tenant_id):
"""Create a tenant private network/subnets.
CCloud specific: use specific cidr range instead
of default subnetpool
"""
network = None
try:
network_args = {
'name': 'auto_allocated_network',
'admin_state_up': False,
'tenant_id': tenant_id,
'shared': False
}
network = p_utils.create_network(self.core_plugin, context,
{'network': network_args})
subnets = []
subnet_args = {
'name': 'auto_allocated_subnet_v4',
'network_id': network['id'],
'tenant_id': tenant_id,
'ip_version': 4,
'cidr': '10.180.0.0/24',
}
subnets.append(
p_utils.create_subnet(self.core_plugin, context,
{'subnet': subnet_args}))
return subnets
except (c_exc.SubnetAllocationError, ValueError, n_exc.BadRequest,
n_exc.NotFound) as e:
LOG.error(
"Unable to auto allocate topology for tenant "
"%(tenant_id)s due to missing or unmet "
"requirements. Reason: %(reason)s", {
'tenant_id': tenant_id,
'reason': e
})
if network:
self._cleanup(context, network['id'])
raise exceptions.AutoAllocationFailure(
reason=_("Unable to provide tenant private network"))
except Exception as e:
network_id = network['id'] if network else None
raise exceptions.UnknownProvisioningError(e, network_id=network_id)
def test__build_topology_provisioning_error_network_only(self):
provisioning_exception = exceptions.UnknownProvisioningError(
Exception, network_id='foo')
self._test__build_topology(
'_provision_tenant_private_network',
provisioning_exception)
def test__build_topology_provisioning_error_no_toplogy(self):
provisioning_exception = exceptions.UnknownProvisioningError(
db_exc.DBError)
self._test__build_topology(
'_provision_tenant_private_network',
provisioning_exception)