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_users = None
  12         self._sliceInfo = None
  13         self.getSliceInfo()
  14         self._site_allocation = self._sliceInfo["sitesUsed"]
  15         self._initial_site_allocation = self._site_allocation
  16
  17     def getSliceInfo(self, user=None):
  18         if not self._sliceInfo:
  19             used_sites = {}
  20             used_deployments = {}
  21             sliverCount = 0
  22             for sliver in self.slivers.all():
  23                 site = sliver.node.site_deployment.site
  24                 deployment = sliver.node.site_deployment.deployment
  25                 used_sites[site.name] = used_sites.get(site.name, 0) + 1
  26                 used_deployments[deployment.name] = used_deployments.get(deployment.name, 0) + 1
  27                 sliverCount = sliverCount + 1
  28
  29             users = {}
  30             for priv in SlicePrivilege.objects.filter(slice=self):
  31                 if not (priv.user.id in users.keys()):
  32                     users[priv.user.id] = {"name": priv.user.email, "id": priv.user.id, "roles": []}
  33                 users[priv.user.id]["roles"].append(priv.role.role)
  34
  35             self._sliceInfo= {"sitesUsed": used_sites,
  36                     "deploymentsUsed": used_deployments,
  37                     "sliverCount": sliverCount,
  38                     "siteCount": len(used_sites.keys()),
  39                     "users": users,
  40                     "roles": []}
  41
  42         if user:
  43             auser = self._sliceInfo["users"].get(user.id, None)
  44             if (auser):
  45                 self._sliceInfo["roles"] = auser["roles"]
  46
  47         return self._sliceInfo
  48
  49     @property
  50     def site_allocation(self):
  51         return self._site_allocation
  52
  53     @site_allocation.setter
  54     def site_allocation(self, value):
  55         self._site_allocation = value
  56
  57     @property
  58     def user_names(self):
  59         return [user["name"] for user in self.getSliceInfo()["users"].values()]
  60
  61     @user_names.setter
  62     def user_names(self, value):
  63         pass # it's read-only
  64
  65     @property
  66     def users(self):
  67         return [user["id"] for user in self.getSliceInfo()["users"].values()]
  68
  69     @users.setter
  70     def users(self, value):
  71         self._update_users = value
  72         #print "XXX set users to", value
  73
  74     @property
  75     def network_ports(self):
  76         # XXX this assumes there is only one network that can have ports bound
  77         # to it for a given slice. This is intended for the tenant view, which
  78         # will obey this field.
  79         networkPorts = ""
  80         for networkSlice in self.networkslices.all():
  81             network = networkSlice.network
  82             if network.ports:
  83                 networkPorts = network.ports
  84
  85         return networkPorts
  86
  87     @network_ports.setter
  88     def network_ports(self, value):
  89         print "XXX set networkPorts to", value
  90
  91     @staticmethod
  92     def select_by_user(user):
  93         if user.is_admin:
  94             qs = SlicePlus.objects.all()
  95         else:
  96             slice_ids = [sp.slice.id for sp in SlicePrivilege.objects.filter(user=user)]
  97             qs = SlicePlus.objects.filter(id__in=slice_ids)
  98         return qs
  99
 100     def get_node_allocation(self, siteList):
 101         siteIDList = [site.id for site in siteList]
 102         nodeList = []
 103         for node in Node.objects.all():
 104             if (node.site_deployment.site.id in siteIDList):
 105                 node.sliverCount = 0
 106                 for sliver in node.slivers.all():
 107                      if sliver.slice.id == self.id:
 108                          node.sliverCount = node.sliverCount + 1
 109                 nodeList.append(node)
 110         return nodeList
 111
 112     def save(self, *args, **kwargs):
 113         updated_image = self.has_field_changed("default_image")
 114         updated_flavor = self.has_field_changed("default_flavor")
 115
 116         super(SlicePlus, self).save(*args, **kwargs)
 117
 118         updated_sites = (self._site_allocation != self._initial_site_allocation) or updated_image or updated_flavor
 119         if updated_sites:
 120             self.save_site_allocation(noAct=True, reset=(updated_image or updated_flavor))
 121
 122         if self._update_users:
 123             self.save_users(noAct=True)
 124
 125         if updated_sites:
 126             self.save_site_allocation(reset=(updated_image or updated_flavor))
 127
 128         if self._update_users:
 129             self.save_users()
 130
 131     def save_site_allocation(self, noAct = False, reset=False):
 132         print "save_site_allocation, reset=",reset
 133
 134         all_slice_slivers = self.slivers.all()
 135         for site_name in self._site_allocation.keys():
 136             desired_allocation = self._site_allocation[site_name]
 137
 138             # make a list of the slivers for this site
 139             slivers = []
 140             for sliver in all_slice_slivers:
 141                 if sliver.node.site_deployment.site.name == site_name:
 142                     slivers.append(sliver)
 143
 144             # delete extra slivers
 145             while (reset and len(slivers)>0) or (len(slivers) > desired_allocation):
 146                 sliver = slivers.pop()
 147                 if (not noAct):
 148                     print "deleting sliver", sliver
 149                     sliver.delete()
 150                 else:
 151                     print "would delete sliver", sliver
 152
 153             # add more slivers
 154             if (len(slivers) < desired_allocation):
 155                 site = Site.objects.get(name = site_name)
 156                 nodes = self.get_node_allocation([site])
 157
 158                 if (not nodes):
 159                     raise ValueError("no nodes in site %s" % site_name)
 160
 161                 while (len(slivers) < desired_allocation):
 162                     # pick the least allocated node
 163                     nodes = sorted(nodes, key=attrgetter("sliverCount"))
 164                     node = nodes[0]
 165
 166                     sliver = Sliver(name=node.name,
 167                             slice=self,
 168                             node=node,
 169                             image = self.default_image,
 170                             flavor = self.default_flavor,
 171                             creator = self.creator,
 172                             deployment = node.site_deployment.deployment)
 173                     slivers.append(sliver)
 174                     if (not noAct):
 175                         print "added sliver", sliver
 176                         sliver.save()
 177                     else:
 178                         print "would add sliver", sliver
 179
 180                     node.sliverCount = node.sliverCount + 1
 181
 182     def save_users(self, noAct = False):
 183         new_users = self._update_users
 184
 185         default_role = SliceRole.objects.get(role="default")
 186
 187         slice_privs = self.sliceprivileges.all()
 188         slice_user_ids = [priv.user.id for priv in slice_privs]
 189
 190         for user_id in new_users:
 191             if (user_id not in slice_user_ids):
 192                 priv = SlicePrivilege(slice=self, user=User.objects.get(id=user_id), role=default_role)
 193                 if (not noAct):
 194                     priv.save()
 195
 196                 print "added user id", user_id
 197
 198         for priv in slice_privs:
 199              if (priv.role.id != default_role.id):
 200                  # only mess with 'default' users; don't kill an admin
 201                  continue
 202
 203              if (priv.user.id not in new_users):
 204                  if (not noAct):
 205                      priv.delete()
 206
 207                  print "deleted user id", user_id
 208
 209
 210
 211
 212