planetstack/model_policies/model_policy_Network.py

   1 from core.models import *
   2
   3 def handle(network):
   4         from core.models import ControllerSlice,ControllerNetwork
   5         from collections import defaultdict
   6         # network controllers are not visible to users. We must ensure
   7         # networks are deployed at all deploymets available to their slices.
   8         slice_controllers = ControllerSlice.objects.all()
   9         slice_deploy_lookup = defaultdict(list)
  10         for slice_controller in slice_controllers:
  11                 slice_deploy_lookup[slice_controller.slice].append(slice_controller.controller)
  12
  13         network_controllers = ControllerNetwork.objects.all()
  14         network_deploy_lookup = defaultdict(list)
  15         for network_controller in network_controllers:
  16                 network_deploy_lookup[network_controller.network].append(network_controller.controller)
  17
  18         expected_controllers = slice_deploy_lookup[network.owner]
  19         for expected_controller in expected_controllers:
  20                 if network not in network_deploy_lookup or \
  21                   expected_controller not in network_deploy_lookup[network]:
  22                         nd = ControllerNetwork(network=network, controller=expected_controller)
  23                         nd.save()