planetstack/observer/steps/sync_slices.py

   1 import os
   2 import base64
   3 from netaddr import IPAddress, IPNetwork
   4 from django.db.models import F, Q
   5 from planetstack.config import Config
   6 from observer.openstacksyncstep import OpenStackSyncStep
   7 from core.models.slice import Slice
   8 from util.logger import Logger, logging
   9
  10 logger = Logger(logfile='observer.log', level=logging.INFO)
  11
  12 class SyncSlices(OpenStackSyncStep):
  13     provides=[Slice]
  14     requested_interval=0
  15
  16     def fetch_pending(self):
  17         return Slice.objects.filter(Q(enacted__lt=F('updated')) | Q(enacted=None))
  18
  19     def get_next_subnet(self):
  20         # limit ourself to 10.0.x.x for now
  21         valid_subnet = lambda net: net.startswith('10.0')
  22         subnets = self.driver.shell.quantum.list_subnets()['subnets']
  23         ints = [int(IPNetwork(subnet['cidr']).ip) for subnet in subnets \
  24                 if valid_subnet(subnet['cidr'])]
  25         ints.sort()
  26         last_ip = IPAddress(ints[-1])
  27         last_network = IPNetwork(str(last_ip) + "/24")
  28         next_network = IPNetwork(str(IPAddress(last_network) + last_network.size) + "/24")
  29         return next_network
  30
  31     def sync_record(self, slice):
  32         logger.info("sync'ing slice %s" % slice.name)
  33         if not slice.tenant_id:
  34             nova_fields = {'tenant_name': slice.name,
  35                    'description': slice.description,
  36                    'enabled': slice.enabled}
  37             tenant = self.driver.create_tenant(**nova_fields)
  38             slice.tenant_id = tenant.id
  39
  40             # XXX give caller an admin role at the tenant they've created
  41             self.driver.add_user_role(slice.creator.kuser_id, tenant.id, 'admin')
  42
  43             # refresh credentials using this tenant
  44             client_driver = self.driver.client_driver(tenant=tenant.name)
  45
  46             # create network
  47             network = client_driver.create_network(slice.name)
  48             slice.network_id = network['id']
  49
  50             # create router
  51             router = client_driver.create_router(slice.name)
  52             slice.router_id = router['id']
  53
  54             # create subnet
  55             next_subnet = self.get_next_subnet()
  56             cidr = str(next_subnet.cidr)
  57             ip_version = next_subnet.version
  58             start = str(next_subnet[2])
  59             end = str(next_subnet[-2])
  60             subnet = client_driver.create_subnet(name=slice.name,
  61                                                network_id = network['id'],
  62                                                cidr_ip = cidr,
  63                                                ip_version = ip_version,
  64                                                start = start,
  65                                                end = end)
  66             slice.subnet_id = subnet['id']
  67             # add subnet as interface to slice's router
  68             client_driver.add_router_interface(router['id'], subnet['id'])
  69             # add external route
  70             client_driver.add_external_route(subnet)
  71
  72
  73         if slice.id and slice.tenant_id:
  74             self.driver.update_tenant(slice.tenant_id,
  75                                       description=slice.description,
  76                                       enabled=slice.enabled)
  77
  78         slice.save()