planetstack/openstack_observer/steps/sync_network_deployments.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 SyncNetworkDeployments(OpenStackSyncStep):
  16     requested_interval = 0
  17     provides=[Network, NetworkDeployments, Sliver]
  18
  19     def fetch_pending(self, deleted):
  20         if (deleted):
  21             return NetworkDeployments.deleted_objects.all()
  22         else:
  23             # network deployments are not visible to users. We must ensure
  24             # networks are deployed at all deploymets available to their slices.
  25             slice_deployments = SliceDeployments.objects.all()
  26             slice_deploy_lookup = defaultdict(list)
  27             for slice_deployment in slice_deployments:
  28                 slice_deploy_lookup[slice_deployment.slice].append(slice_deployment.deployment)
  29
  30             network_deployments = NetworkDeployments.objects.all()
  31             network_deploy_lookup = defaultdict(list)
  32             for network_deployment in network_deployments:
  33                 network_deploy_lookup[network_deployment.network].append(network_deployment.deployment)
  34
  35             for network in Network.objects.filter():
  36                 # ignore networks that have
  37                 # template.visibility = private and translation = none
  38                 if network.template.visibility == 'private' and not network.template.translation == 'none':
  39                     continue
  40                 expected_deployments = slice_deploy_lookup[network.owner]
  41                 for expected_deployment in expected_deployments:
  42                     if network not in network_deploy_lookup or \
  43                       expected_deployment not in network_deploy_lookup[network]:
  44                         nd = NetworkDeployments(network=network, deployment=expected_deployment)
  45                         nd.save()
  46             return NetworkDeployments.objects.filter(Q(enacted__lt=F('updated')) | Q(enacted=None))
  47
  48     def get_next_subnet(self, deployment=None):
  49         # limit ourself to 10.0.x.x for now
  50         valid_subnet = lambda net: net.startswith('10.0')
  51         driver = self.driver.admin_driver(deployment=deployment)
  52         subnets = driver.shell.quantum.list_subnets()['subnets']
  53         ints = [int(IPNetwork(subnet['cidr']).ip) for subnet in subnets \
  54                 if valid_subnet(subnet['cidr'])]
  55         ints.sort()
  56         if ints:
  57             last_ip = IPAddress(ints[-1])
  58         else:
  59             last_ip = IPAddress('10.0.0.0')
  60         last_network = IPNetwork(str(last_ip) + "/24")
  61         next_network = IPNetwork(str(IPAddress(last_network) + last_network.size) + "/24")
  62         return next_network
  63
  64     def save_network_deployment(self, network_deployment):
  65         if not network_deployment.network_id and network_deployment.network.template.sharedNetworkName:
  66             network_deployment.network_id = network_deployment.network.template.sharedNetworkId
  67
  68         if not network_deployment.net_id:
  69             network_name = network_deployment.network.name
  70
  71             # create network
  72             os_network = self.driver.create_network(network_name, shared=True)
  73             network_deployment.net_id = os_network['id']
  74
  75             # create router
  76             #router = self.driver.create_router(network_name)
  77             #network_deployment.router_id = router['id']
  78
  79             # create subnet
  80             next_subnet = self.get_next_subnet(deployment=network_deployment.deployment.name)
  81             cidr = str(next_subnet.cidr)
  82             ip_version = next_subnet.version
  83             start = str(next_subnet[2])
  84             end = str(next_subnet[-2])
  85             subnet = self.driver.create_subnet(name=network_name,
  86                                                network_id = network_deployment.net_id,
  87                                                cidr_ip = cidr,
  88                                                ip_version = ip_version,
  89                                                start = start,
  90                                                end = end)
  91             network_deployment.subnet = cidr
  92             network_deployment.subnet_id = subnet['id']
  93             # add subnet as interface to slice's router
  94             #self.driver.add_router_interface(router['id'], subnet['id'])
  95             # add external route
  96             #self.driver.add_external_route(subnet)
  97             logger.info("created private subnet (%s) for network: %s" % (cidr, network_deployment.network))
  98         else:
  99             (network_deployment.subnet_id, network_deployment.subnet) = self.driver.get_network_subnet(network_deployment.net_id)
 100             logger.info("sync'ed subnet (%s) for network: %s" % (network_deployment.subnet, network_deployment.network))
 101
 102         network_deployment.save()
 103
 104     def sync_record(self, network_deployment):
 105         if network_deployment.network.owner and network_deployment.network.owner.creator:
 106             try:
 107                 # update manager context
 108                 real_driver = self.driver
 109                 self.driver = self.driver.client_driver(caller=network_deployment.network.owner.creator,
 110                                                         tenant=network_deployment.network.owner.name,
 111                                                         deployment=network_deployment.deployment.name)
 112                 self.save_network_deployment(network_deployment)
 113                 self.driver = real_driver
 114                 logger.info("saved network deployment: %s" % (network_deployment))
 115             except Exception,e:
 116                 logger.log_exc("save network deployment failed: %s" % network_deployment)
 117                 raise e
 118
 119
 120     def delete_record(self, network_deployment):
 121         driver = OpenStackDriver().client_driver(caller=network_deployment.network.owner.creator,
 122                                                  tenant=network_deployment.network.owner.name,
 123                                                  deployment=network_deployment.deployment.name)
 124         if (network_deployment.router_id) and (network_deployment.subnet_id):
 125             driver.delete_router_interface(network_deployment.router_id, network_deployment.subnet_id)
 126         if network_deployment.subnet_id:
 127             driver.delete_subnet(network_deployment.subnet_id)
 128         if network_deployment.router_id:
 129             driver.delete_router(network_deployment.router_id)
 130         if network_deployment.net_id:
 131             driver.delete_network(network_deployment.net_id)