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
10 logger = Logger(logfile='observer.log', level=logging.INFO)
12 class SyncSlices(OpenStackSyncStep):
16 def fetch_pending(self):
17 return Slice.objects.filter(Q(enacted__lt=F('updated')) | Q(enacted=None))
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'])]
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")
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
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')
43 # refresh credentials using this tenant
44 client_driver = self.driver.client_driver(tenant=tenant.name)
47 network = client_driver.create_network(slice.name)
48 slice.network_id = network['id']
51 router = client_driver.create_router(slice.name)
52 slice.router_id = router['id']
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'],
63 ip_version = ip_version,
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'])
70 client_driver.add_external_route(subnet)
73 if slice.id and slice.tenant_id:
74 self.driver.update_tenant(slice.tenant_id,
75 description=slice.description,
76 enabled=slice.enabled)