planetstack/core/xoslib/objects/sliceplus.py

   1 from core.models import Slice, SlicePrivilege, SliceRole, Sliver, Site, Node, User
   2 from plus import PlusObjectMixin
   3 from operator import itemgetter, attrgetter
   4
   5 class SlicePlus(Slice, PlusObjectMixin):
   6     class Meta:
   7         proxy = True
   8
   9     def __init__(self, *args, **kwargs):
  10         super(SlicePlus, self).__init__(*args, **kwargs)
  11         self._update_site_allocation = None
  12         self._update_users = None
  13         self._sliceInfo = None
  14
  15     def getSliceInfo(self, user=None):
  16         if not self._sliceInfo:
  17             used_sites = {}
  18             used_deployments = {}
  19             sliverCount = 0
  20             for sliver in self.slivers.all():
  21                 site = sliver.node.site_deployment.site
  22                 deployment = sliver.node.site_deployment.deployment
  23                 used_sites[site.name] = used_sites.get(site.name, 0) + 1
  24                 used_deployments[deployment.name] = used_deployments.get(deployment.name, 0) + 1
  25                 sliverCount = sliverCount + 1
  26
  27             users = {}
  28             for priv in SlicePrivilege.objects.filter(slice=self):
  29                 if not (priv.user.id in users.keys()):
  30                     users[priv.user.id] = {"name": priv.user.email, "id": priv.user.id, "roles": []}
  31                 users[priv.user.id]["roles"].append(priv.role.role)
  32
  33             self._sliceInfo= {"sitesUsed": used_sites,
  34                     "deploymentsUsed": used_deployments,
  35                     "sliverCount": sliverCount,
  36                     "siteCount": len(used_sites.keys()),
  37                     "users": users,
  38                     "roles": []}
  39
  40         if user:
  41             auser = self._sliceInfo["users"].get(user.id, None)
  42             if (auser):
  43                 self._sliceInfo["roles"] = auser["roles"]
  44
  45         return self._sliceInfo
  46
  47     @property
  48     def site_allocation(self):
  49         return self.getSliceInfo()["sitesUsed"]
  50
  51     @site_allocation.setter
  52     def site_allocation(self, value):
  53         self._update_site_allocation = value
  54         #print "XXX set sitesUsed to", value
  55
  56     @property
  57     def user_names(self):
  58         return [user["name"] for user in self.getSliceInfo()["users"].values()]
  59
  60     @property
  61     def users(self):
  62         return [user["id"] for user in self.getSliceInfo()["users"].values()]
  63
  64     @users.setter
  65     def users(self, value):
  66         self._update_users = value
  67         #print "XXX set users to", value
  68
  69     @property
  70     def network_ports(self):
  71         # XXX this assumes there is only one network that can have ports bound
  72         # to it for a given slice. This is intended for the tenant view, which
  73         # will obey this field.
  74         networkPorts = ""
  75         for networkSlice in self.networkslices.all():
  76             network = networkSlice.network
  77             if network.ports:
  78                 networkPorts = network.ports
  79
  80         return networkPorts
  81
  82     @network_ports.setter
  83     def network_ports(self, value):
  84         print "XXX set networkPorts to", value
  85
  86     @staticmethod
  87     def select_by_user(user):
  88         if user.is_admin:
  89             qs = SlicePlus.objects.all()
  90         else:
  91             slice_ids = [sp.slice.id for sp in SlicePrivilege.objects.filter(user=user)]
  92             qs = SlicePlus.objects.filter(id__in=slice_ids)
  93         return qs
  94
  95     def get_node_allocation(self, siteList):
  96         siteIDList = [site.id for site in siteList]
  97         nodeList = []
  98         for node in Node.objects.all():
  99             if (node.site_deployment.site.id in siteIDList):
 100                 node.sliverCount = 0
 101                 for sliver in node.slivers.all():
 102                      if sliver.slice.id == self.id:
 103                          node.sliverCount = node.sliverCount + 1
 104                 nodeList.append(node)
 105         return nodeList
 106
 107     def save(self, *args, **kwargs):
 108         super(SlicePlus, self).save(*args, **kwargs)
 109
 110         if self._update_site_allocation:
 111             self.save_site_allocation(noAct=True)
 112
 113         if self._update_users:
 114             self.save_users(noAct=True)
 115
 116         if self._update_site_allocation:
 117             self.save_site_allocation()
 118
 119         if self._update_users:
 120             self.save_users()
 121
 122     def save_site_allocation(self, noAct = False):
 123         new_site_allocation = self._update_site_allocation
 124
 125         all_slice_slivers = self.slivers.all()
 126         for site_name in new_site_allocation.keys():
 127             desired_allocation = new_site_allocation[site_name]
 128
 129             # make a list of the slivers for this site
 130             slivers = []
 131             for sliver in all_slice_slivers:
 132                 if sliver.node.site_deployment.site.name == site_name:
 133                     slivers.append(sliver)
 134
 135             # delete extra slivers
 136             while (len(slivers) > desired_allocation):
 137                 sliver = slivers.pop()
 138                 print "deleting sliver", sliver
 139                 if (not noAct):
 140                     sliver.delete()
 141
 142             # add more slivers
 143             if (len(slivers) < desired_allocation):
 144                 site = Site.objects.get(name = site_name)
 145                 nodes = self.get_node_allocation([site])
 146
 147                 if (not nodes):
 148                     raise ValueError("no nodes in site %s" % site_name)
 149
 150                 while (len(slivers) < desired_allocation):
 151                     # pick the least allocated node
 152                     nodes = sorted(nodes, key=attrgetter("sliverCount"))
 153                     node = nodes[0]
 154
 155                     sliver = Sliver(name=node.name,
 156                             slice=self,
 157                             node=node,
 158                             image = self.default_image,
 159                             flavor = self.default_flavor,
 160                             creator = self.creator,
 161                             deployment = node.site_deployment.deployment)
 162                     slivers.append(sliver)
 163                     if (not noAct):
 164                         sliver.save()
 165
 166                     print "added sliver", sliver
 167
 168                     node.sliverCount = node.sliverCount + 1
 169
 170     def save_users(self, noAct = False):
 171         new_users = self._update_users
 172
 173         default_role = SliceRole.objects.get(role="default")
 174
 175         slice_privs = self.sliceprivileges.all()
 176         slice_user_ids = [priv.user.id for priv in slice_privs]
 177
 178         for user_id in new_users:
 179             if (user_id not in slice_user_ids):
 180                 priv = SlicePrivilege(slice=self, user=User.objects.get(id=user_id), role=default_role)
 181                 if (not noAct):
 182                     priv.save()
 183
 184                 print "added user id", user_id
 185
 186         for priv in slice_privs:
 187              if (priv.role.id != default_role.id):
 188                  # only mess with 'default' users; don't kill an admin
 189                  continue
 190
 191              if (priv.user.id not in new_users):
 192                  if (not noAct):
 193                      priv.delete()
 194
 195                  print "deleted user id", user_id
 196
 197
 198
 199
 200