blob: a4a19b54ae271a641c82a9a6722578365f1a4bb3 [file] [log] [blame]
# Copyright 2017-present Open Networking 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 synchronizers.new_base.modelaccessor import *
from collections import defaultdict
from synchronizers.new_base.policy import Policy
class NetworkPolicy(Policy):
model_name = "Network"
def handle_create(self, network):
return self.handle_update(network)
def handle_update(self, network):
# if (not network.owner.policed) or (network.owner.policed<network.owner.updated):
# raise Exception("Cannot apply network policies until slice policies have completed")
#expected_controllers = []
#for slice_controller in ControllerSlice.objects.all():
# if slice_controller.slice.id == network.owner.id:
# expected_controllers.append(slice_controller.controller)
# For simplicity, let's assume that a network gets deployed on all controllers.
expected_controllers = Controller.objects.all()
existing_controllers = []
for cn in ControllerNetwork.objects.all():
if cn.network.id == network.id:
existing_controllers.append(cn.controller)
existing_controller_ids = [c.id for c in existing_controllers]
for expected_controller in expected_controllers:
if expected_controller.id not in existing_controller_ids:
lazy_blocked=True
# check and see if some instance already exists
for networkslice in network.networkslices.all():
found = False
for instance in networkslice.slice.instances.all():
if instance.node.site_deployment.controller.id == expected_controller.id:
found = True
if found:
self.logger.info("MODEL_POLICY: network %s setting lazy_blocked to false because instance on controller already exists" % network)
lazy_blocked=False
nd = ControllerNetwork(network=network, controller=expected_controller, lazy_blocked=lazy_blocked)
self.logger.info("MODEL POLICY: network %s create ControllerNetwork %s lazy_blocked %s" % (network, nd, lazy_blocked))
if network.subnet:
# XXX: Possibly unpredictable behavior if there is
# more than one ControllerNetwork and the subnet
# is specified.
nd.subnet = network.subnet
nd.save()