planetstack/observer/steps/sync_slice_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.site import SiteDeployments
   9 from core.models.slice import Slice, SliceDeployments
  10 from util.logger import Logger, logging
  11
  12 logger = Logger(level=logging.INFO)
  13
  14 class SyncSliceDeployments(OpenStackSyncStep):
  15     provides=[Slice, SliceDeployments]
  16     requested_interval=0
  17
  18     def fetch_pending(self):
  19         # slice deployments are not visible to users. We must ensure
  20         # slices are deployed at all deploymets available to their site.
  21         site_deployments = SiteDeployment.objects.all()
  22         site_deploy_lookup = defaultdict(list)
  23         for site_deployment in site_deployments:
  24             site_deploy_lookup[site_deployment.site].append(site_deployment.deployment)
  25
  26         slice_deployments = SliceDeployment.objects.all()
  27         slice_deploy_lookup = defaultdict(list)
  28         for slice_deployment in slice_deployments:
  29             slice_deploy_lookup[slice_deployment.slice].append(slice_deployment.deployment)
  30
  31         for slice in Slice.objects.all():
  32             expected_deployments = site_deploy_lookup[slice.site]
  33             for expected_deployment in expected_deployments:
  34                 if slice not in slice_deploy_lookup or \
  35                    expected_deployment not in slice_deploy_lookup[slice]:
  36                     sd = SliceDeployments(slice=slice, deployment=expected_deployment)
  37                     sd.save()
  38
  39         # now we can return all slice deployments that need to be enacted
  40         return SliceDeployments.objects.filter(Q(enacted__lt=F('updated')) | Q(enacted=None))
  41
  42     def get_next_subnet(self, deployment=None):
  43         # limit ourself to 10.0.x.x for now
  44         valid_subnet = lambda net: net.startswith('10.0')
  45         driver = self.driver.admin_driver(deployment=deployment)
  46         subnets = driver.shell.quantum.list_subnets()['subnets']
  47         ints = [int(IPNetwork(subnet['cidr']).ip) for subnet in subnets \
  48                 if valid_subnet(subnet['cidr'])]
  49         ints.sort()
  50         last_ip = IPAddress(ints[-1])
  51         last_network = IPNetwork(str(last_ip) + "/24")
  52         next_network = IPNetwork(str(IPAddress(last_network) + last_network.size) + "/24")
  53         return next_network
  54
  55     def sync_record(self, slice_deployment):
  56         logger.info("sync'ing slice deployment %s" % slice_deployment)
  57         if not slice_deployment.tenant_id:
  58             nova_fields = {'tenant_name': slice_deployment.slice.name,
  59                    'description': slice_deployment.slice.description,
  60                    'enabled': slice_deployment.slice.enabled}
  61             driver = self.driver.admin_driver(deployment=slice_deployment.deployment.name)
  62             tenant = driver.create_tenant(**nova_fields)
  63             slice_deployment.tenant_id = tenant.id
  64
  65             # XXX give caller an admin role at the tenant they've created
  66             driver.add_user_role(slice_deployment.slice.creator.kuser_id, tenant.id, 'admin')
  67
  68             # refresh credentials using this tenant
  69             client_driver = self.driver.client_driver(tenant=tenant.name,
  70                                                       deployment=slice_deployment.deployment.name)
  71
  72             # create network
  73             network = client_driver.create_network(slice.name)
  74             slice_deployment.network_id = network['id']
  75
  76             # create router
  77             router = client_driver.create_router(slice.name)
  78             slice_deployment.router_id = router['id']
  79
  80             # create subnet for slice's private network
  81             next_subnet = self.get_next_subnet(deployment=slice_deployment.deployment.name)
  82             cidr = str(next_subnet.cidr)
  83             ip_version = next_subnet.version
  84             start = str(next_subnet[2])
  85             end = str(next_subnet[-2])
  86             subnet = client_driver.create_subnet(name=slice.name,
  87                                                network_id = network['id'],
  88                                                cidr_ip = cidr,
  89                                                ip_version = ip_version,
  90                                                start = start,
  91                                                end = end)
  92             slice_deployment.subnet_id = subnet['id']
  93             # add subnet as interface to slice's router
  94             client_driver.add_router_interface(router['id'], subnet['id'])
  95             # add external route
  96             client_driver.add_external_route(subnet)
  97
  98
  99         if slice_deployment.id and slice_deployment.tenant_id:
 100             driver = self.driver.admin_driver(deployment=slice_deployment.deployment.name)
 101             driver.update_tenant(slice_deployment.tenant_id,
 102                                  description=slice_deployment.slice.description,
 103                                  enabled=slice_deployment.slice.enabled)
 104
 105         slice_deployment.save()