planetstack/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 util.logger import Logger, logging
  11
  12 logger = Logger(level=logging.INFO)
  13
  14 class SyncNetworkDeployments(OpenStackSyncStep):
  15     requested_interval = 0
  16     provides=[NetworkDeployments]
  17
  18     def fetch_pending(self):
  19         # network deployments are not visible to users. We must ensure
  20         # networks are deployed at all deploymets available to their slices.
  21         slice_deployments = SliceDeployments.objects.all()
  22         slice_deploy_lookup = defaultdict(list)
  23         for slice_deployment in slice_deployments:
  24             slice_deploy_lookup[slice_deployment.slice].append(slice_deployment.deployment)
  25
  26         network_deployments = NetworkDeployments.objects.all()
  27         network_deploy_lookup = defaultdict(list)
  28         for network_deployment in network_deployments:
  29             network_deploy_lookup[network_deployment.network].append(network_deployment.deployment)
  30
  31         for network in Network.objects.filter():
  32             # ignore networks that have
  33             # template.visibility = private and template.translation = none
  34             if network.template.visibility == 'private' and network.template.translation == 'none':                                  continue
  35             expected_deployments = slice_deploy_lookup[network.owner]
  36             for expected_deployment in expected_deployments:
  37                 if network not in network_deploy_lookup or \
  38                   expected_deployment not in network_deploy_lookup[network]:
  39                     nd = NetworkDeployments(network=network, deployment=expected_deployment)
  40                     nd.save()
  41         return NetworkDeployments.objects.filter(Q(enacted__lt=F('updated')) | Q(enacted=None))
  42
  43     def get_next_subnet(self, deployment=None):
  44         # limit ourself to 10.0.x.x for now
  45         valid_subnet = lambda net: net.startswith('10.0')
  46         driver = self.driver.admin_driver(deployment=deployment)
  47         subnets = driver.shell.quantum.list_subnets()['subnets']
  48         ints = [int(IPNetwork(subnet['cidr']).ip) for subnet in subnets \
  49                 if valid_subnet(subnet['cidr'])]
  50         ints.sort()
  51         if ints:
  52             last_ip = IPAddress(ints[-1])
  53         else:
  54             last_ip = IPAddress('10.0.0.0')
  55         last_network = IPNetwork(str(last_ip) + "/24")
  56         next_network = IPNetwork(str(IPAddress(last_network) + last_network.size) + "/24")
  57         return next_network
  58
  59     def save_network_deployment(self, network_deployment):
  60         if not network_deployment.network_id and network_deployment.network.template.sharedNetworkName:
  61             network_deployment.network_id = network_deployment.network.template.sharedNetworkId
  62
  63         if not network_deployment.net_id:
  64             network_name = network_deployment.network.name
  65
  66             # create network
  67             os_network = self.driver.create_network(network_name, shared=True)
  68             network_deployment.net_id = os_network['id']
  69
  70             # create router
  71             router = self.driver.create_router(network_name)
  72             network_deployment.router_id = router['id']
  73
  74             # create subnet
  75             next_subnet = self.get_next_subnet(deployment=network_deployment.deployment.name)
  76             cidr = str(next_subnet.cidr)
  77             ip_version = next_subnet.version
  78             start = str(next_subnet[2])
  79             end = str(next_subnet[-2])
  80             subnet = self.driver.create_subnet(name=network_name,
  81                                                network_id = network_deployment.net_id,
  82                                                cidr_ip = cidr,
  83                                                ip_version = ip_version,
  84                                                start = start,
  85                                                end = end)
  86             network_deployment.subnet = cidr
  87             network_deployment.subnet_id = subnet['id']
  88             # add subnet as interface to slice's router
  89             self.driver.add_router_interface(router['id'], subnet['id'])
  90             # add external route
  91             self.driver.add_external_route(subnet)
  92             logger.info("created private subnet (%s) for network: %s" % (cidr, network_deployment.network))
  93         else:
  94             (network_deployment.subnet_id, network_deployment.subnet) = self.driver.get_network_subnet(network_deployment.net_id)
  95             logger.info("sync'ed subnet (%s) for network: %s" % (network_deployment.subnet, network_deployment.network))
  96
  97         network_deployment.save()
  98
  99     def sync_record(self, network_deployment):
 100         if network_deployment.network.owner and network_deployment.network.owner.creator:
 101             try:
 102                 # update manager context
 103                 real_driver = self.driver
 104                 self.driver = self.driver.client_driver(caller=network_deployment.network.owner.creator,
 105                                                         tenant=network_deployment.network.owner.name,
 106                                                         deployment=network_deployment.deployment.name)
 107                 self.save_network_deployment(network_deployment)
 108                 self.driver = real_driver
 109                 logger.info("saved network deployment: %s" % (network_deployment))
 110             except Exception,e:
 111                 logger.log_exc("save network deployment failed: %s" % network_deployment)
 112                 raise e
 113
 114
 115