planetstack/openstack_observer/steps/sync_controller_networks.py

   1 import os
   2 import base64
   3 from collections import defaultdict
   4 from netaddr import IPAddress, IPNetwork
   5 from django.db.models import F, Q
   6 from planetstack.config import Config
   7 from observer.openstacksyncstep import OpenStackSyncStep
   8 from core.models.network import *
   9 from core.models.slice import *
  10 from core.models.sliver import Sliver
  11 from util.logger import Logger, logging
  12
  13 logger = Logger(level=logging.INFO)
  14
  15 class SyncControllerNetworks(OpenStackSyncStep):
  16     requested_interval = 0
  17     provides=[Network, ControllerNetworks, Sliver]
  18
  19     def fetch_pending(self, deleted):
  20         if (deleted):
  21             return ControllerNetworks.deleted_objects.all()
  22         else:
  23             return ControllerNetworks.objects.filter(Q(enacted__lt=F('updated')) | Q(enacted=None))
  24
  25     def get_next_subnet(self, controller=None):
  26         # limit ourself to 10.0.x.x for now
  27         valid_subnet = lambda net: net.startswith('10.0')
  28
  29         driver = self.driver.admin_driver(controller=controller,tenant='admin')
  30         subnets = driver.shell.quantum.list_subnets()['subnets']
  31         ints = [int(IPNetwork(subnet['cidr']).ip) for subnet in subnets \
  32                 if valid_subnet(subnet['cidr'])]
  33         ints.sort()
  34         if ints:
  35             last_ip = IPAddress(ints[-1])
  36         else:
  37             last_ip = IPAddress('10.0.0.0')
  38         last_network = IPNetwork(str(last_ip) + "/24")
  39         next_network = IPNetwork(str(IPAddress(last_network) + last_network.size) + "/24")
  40         return next_network
  41
  42     def save_controller_network(self, controller_network):
  43         if (not controller_network.net_id) and controller_network.network.template.sharedNetworkName:
  44             # It's a shared network, try to find the shared network id
  45
  46             quantum_networks = self.driver.shell.quantum.list_networks(name=controller_network.network.template.sharedNetworkName)["networks"]
  47             if quantum_networks:
  48                 logger.info("set shared network id %s" % quantum_networks[0]["id"])
  49                 controller_network.net_id = quantum_networks[0]["id"]
  50             else:
  51                 logger.info("failed to find shared network id for controller")
  52                 return
  53
  54         # At this point, it must be a private network, so create it if it does
  55         # not exist.
  56
  57         if not controller_network.net_id:
  58             network_name = controller_network.network.name
  59
  60             # create network
  61             os_network = self.driver.create_network(network_name, shared=True)
  62             controller_network.net_id = os_network['id']
  63
  64             # create router
  65             #router = self.driver.create_router(network_name)
  66             #controller_network.router_id = router['id']
  67
  68             # create subnet
  69             next_subnet = self.get_next_subnet(controller=controller_network.controller.name)
  70             cidr = str(next_subnet.cidr)
  71             ip_version = next_subnet.version
  72             start = str(next_subnet[2])
  73             end = str(next_subnet[-2])
  74             subnet = self.driver.create_subnet(name=network_name,
  75                                                network_id = controller_network.net_id,
  76                                                cidr_ip = cidr,
  77                                                ip_version = ip_version,
  78                                                start = start,
  79                                                end = end)
  80             controller_network.subnet = cidr
  81             controller_network.subnet_id = subnet['id']
  82             # add subnet as interface to slice's router
  83             #self.driver.add_router_interface(router['id'], subnet['id'])
  84             # add external route
  85             #self.driver.add_external_route(subnet)
  86             logger.info("created private subnet (%s) for network: %s" % (cidr, controller_network.network))
  87
  88         # Now, figure out the subnet and subnet_id for the network. This works
  89         # for both private and shared networks.
  90
  91         if (not controller_network.subnet_id) or (not controller_network.subnet):
  92             (controller_network.subnet_id, controller_network.subnet) = self.driver.get_network_subnet(controller_network.net_id)
  93             logger.info("sync'ed subnet (%s) for network: %s" % (controller_network.subnet, controller_network.network))
  94
  95         if (not controller_network.subnet):
  96             # this will generate a non-null database constraint error
  97             #   ... which in turn leads to transaction errors
  98             # it's probably caused by networks that no longer exist at the
  99             # quantum level.
 100
 101             logger.info("null subnet for network %s, skipping save" % controller_network.network)
 102             return
 103
 104         controller_network.save()
 105
 106     def sync_record(self, controller_network):
 107         logger.info("sync'ing network controller %s for network %s slice %s controller %s" % (controller_network, controller_network.network, str(controller_network.network.owner), controller_network.controller))
 108
 109         if not controller_network.controller.admin_user:
 110             logger.info("controller %r has no admin_user, skipping" % controller_network.controller)
 111             return
 112
 113         self.driver = self.driver.admin_driver(controller=controller_network.controller,tenant='admin')
 114         if controller_network.network.owner and controller_network.network.owner.creator:
 115             try:
 116                 # update manager context
 117                 # Bring back
 118                 self.save_controller_network(controller_network)
 119                 logger.info("saved network controller: %s" % (controller_network))
 120             except Exception,e:
 121                 logger.log_exc("save network controller failed: %s" % controller_network)
 122                 raise e
 123
 124
 125     def delete_record(self, controller_network):
 126         driver = OpenStackDriver().client_driver(caller=controller_network.network.owner.creator,
 127                                                  tenant=controller_network.network.owner.name,
 128                                                  controller=controller_network.controller.name)
 129         if (controller_network.router_id) and (controller_network.subnet_id):
 130             driver.delete_router_interface(controller_network.router_id, controller_network.subnet_id)
 131         if controller_network.subnet_id:
 132             driver.delete_subnet(controller_network.subnet_id)
 133         if controller_network.router_id:
 134             driver.delete_router(controller_network.router_id)
 135         if controller_network.net_id:
 136             driver.delete_network(controller_network.net_id)