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         self._network_ports = self._sliceInfo["networkPorts"]
  17         self._initial_network_ports = self._network_ports
  18
  19     def getSliceInfo(self, user=None):
  20         if not self._sliceInfo:
  21             used_sites = {}
  22             used_deployments = {}
  23             sliverCount = 0
  24             sshCommands = []
  25             for sliver in self.slivers.all():
  26                 site = sliver.node.site_deployment.site
  27                 deployment = sliver.node.site_deployment.deployment
  28                 used_sites[site.name] = used_sites.get(site.name, 0) + 1
  29                 used_deployments[deployment.name] = used_deployments.get(deployment.name, 0) + 1
  30                 sliverCount = sliverCount + 1
  31
  32                 if (sliver.instance_id and sliver.instance_name):
  33                     sshCommand = 'ssh -o "ProxyCommand ssh -q %s@%s" ubuntu@%s' % (sliver.instance_id, sliver.node.name, sliver.instance_name)
  34                     sshCommands.append(sshCommand);
  35
  36             users = {}
  37             for priv in SlicePrivilege.objects.filter(slice=self):
  38                 if not (priv.user.id in users.keys()):
  39                     users[priv.user.id] = {"name": priv.user.email, "id": priv.user.id, "roles": []}
  40                 users[priv.user.id]["roles"].append(priv.role.role)
  41
  42             # XXX this assumes there is only one network that can have ports bound
  43             # to it for a given slice. This is intended for the tenant view, which
  44             # will obey this field.
  45             networkPorts = ""
  46             for networkSlice in self.networkslices.all():
  47                 network = networkSlice.network
  48                 if (network.owner.id != self.id):
  49                     continue
  50                 if network.ports:
  51                     networkPorts = network.ports
  52
  53             self._sliceInfo= {"sitesUsed": used_sites,
  54                     "deploymentsUsed": used_deployments,
  55                     "sliverCount": sliverCount,
  56                     "siteCount": len(used_sites.keys()),
  57                     "users": users,
  58                     "roles": [],
  59                     "sshCommands": sshCommands,
  60                     "networkPorts": networkPorts}
  61
  62         if user:
  63             auser = self._sliceInfo["users"].get(user.id, None)
  64             if (auser):
  65                 self._sliceInfo["roles"] = auser["roles"]
  66
  67         return self._sliceInfo
  68
  69     @property
  70     def site_allocation(self):
  71         return self._site_allocation
  72
  73     @site_allocation.setter
  74     def site_allocation(self, value):
  75         self._site_allocation = value
  76
  77     @property
  78     def user_names(self):
  79         return [user["name"] for user in self.getSliceInfo()["users"].values()]
  80
  81     @user_names.setter
  82     def user_names(self, value):
  83         pass # it's read-only
  84
  85     @property
  86     def users(self):
  87         return [user["id"] for user in self.getSliceInfo()["users"].values()]
  88
  89     @users.setter
  90     def users(self, value):
  91         self._update_users = value
  92         #print "XXX set users to", value
  93
  94     @property
  95     def network_ports(self):
  96         return self._network_ports
  97
  98     @network_ports.setter
  99     def network_ports(self, value):
 100         self._network_ports = value
 101         #print "XXX set networkPorts to", value
 102
 103     @staticmethod
 104     def select_by_user(user):
 105         if user.is_admin:
 106             qs = SlicePlus.objects.all()
 107         else:
 108             slice_ids = [sp.slice.id for sp in SlicePrivilege.objects.filter(user=user)]
 109             qs = SlicePlus.objects.filter(id__in=slice_ids)
 110         return qs
 111
 112     def get_node_allocation(self, siteList):
 113         siteIDList = [site.id for site in siteList]
 114         nodeList = []
 115         for node in Node.objects.all():
 116             if (node.site_deployment.site.id in siteIDList):
 117                 node.sliverCount = 0
 118                 for sliver in node.slivers.all():
 119                      if sliver.slice.id == self.id:
 120                          node.sliverCount = node.sliverCount + 1
 121                 nodeList.append(node)
 122         return nodeList
 123
 124     def save(self, *args, **kwargs):
 125         updated_image = self.has_field_changed("default_image")
 126         updated_flavor = self.has_field_changed("default_flavor")
 127
 128         super(SlicePlus, self).save(*args, **kwargs)
 129
 130         # try things out first
 131
 132         updated_sites = (self._site_allocation != self._initial_site_allocation) or updated_image or updated_flavor
 133         if updated_sites:
 134             self.save_site_allocation(noAct=True, reset=(updated_image or updated_flavor))
 135
 136         if self._update_users:
 137             self.save_users(noAct=True)
 138
 139         if (self._network_ports != self._initial_network_ports):
 140             self.save_network_ports(noAct=True)
 141
 142         # now actually save them
 143
 144         if updated_sites:
 145             self.save_site_allocation(reset=(updated_image or updated_flavor))
 146
 147         if self._update_users:
 148             self.save_users()
 149
 150         if (self._network_ports != self._initial_network_ports):
 151             self.save_network_ports()
 152
 153     def save_site_allocation(self, noAct = False, reset=False):
 154         print "save_site_allocation, reset=",reset
 155
 156         if (not self._site_allocation):
 157             # Must be a sliver that was just created, and has not site_allocation
 158             # field.
 159             return
 160
 161         all_slice_slivers = self.slivers.all()
 162         for site_name in self._site_allocation.keys():
 163             desired_allocation = self._site_allocation[site_name]
 164
 165             # make a list of the slivers for this site
 166             slivers = []
 167             for sliver in all_slice_slivers:
 168                 if sliver.node.site_deployment.site.name == site_name:
 169                     slivers.append(sliver)
 170
 171             # delete extra slivers
 172             while (reset and len(slivers)>0) or (len(slivers) > desired_allocation):
 173                 sliver = slivers.pop()
 174                 if (not noAct):
 175                     print "deleting sliver", sliver
 176                     sliver.delete()
 177                 else:
 178                     print "would delete sliver", sliver
 179
 180             # add more slivers
 181             if (len(slivers) < desired_allocation):
 182                 site = Site.objects.get(name = site_name)
 183                 nodes = self.get_node_allocation([site])
 184
 185                 if (not nodes):
 186                     raise ValueError("no nodes in site %s" % site_name)
 187
 188                 while (len(slivers) < desired_allocation):
 189                     # pick the least allocated node
 190                     nodes = sorted(nodes, key=attrgetter("sliverCount"))
 191                     node = nodes[0]
 192
 193                     sliver = Sliver(name=node.name,
 194                             slice=self,
 195                             node=node,
 196                             image = self.default_image,
 197                             flavor = self.default_flavor,
 198                             creator = self.creator,
 199                             deployment = node.site_deployment.deployment)
 200                     slivers.append(sliver)
 201                     if (not noAct):
 202                         print "added sliver", sliver
 203                         sliver.save()
 204                     else:
 205                         print "would add sliver", sliver
 206
 207                     node.sliverCount = node.sliverCount + 1
 208
 209     def save_users(self, noAct = False):
 210         new_users = self._update_users
 211
 212         default_role = SliceRole.objects.get(role="default")
 213
 214         slice_privs = self.sliceprivileges.all()
 215         slice_user_ids = [priv.user.id for priv in slice_privs]
 216
 217         for user_id in new_users:
 218             if (user_id not in slice_user_ids):
 219                 priv = SlicePrivilege(slice=self, user=User.objects.get(id=user_id), role=default_role)
 220                 if (not noAct):
 221                     priv.save()
 222
 223                 print "added user id", user_id
 224
 225         for priv in slice_privs:
 226              if (priv.role.id != default_role.id):
 227                  # only mess with 'default' users; don't kill an admin
 228                  continue
 229
 230              if (priv.user.id not in new_users):
 231                  if (not noAct):
 232                      priv.delete()
 233
 234                  print "deleted user id", user_id
 235
 236     def save_network_ports(self, noAct=False):
 237         # First search for any network that already has a filled in 'ports'
 238         # field. We'll assume there can only be one, so it must be the right
 239         # one.
 240         for networkSlice in self.networkslices.all():
 241             network = networkSlice.network
 242             if (network.owner.id != self.id):
 243                 continue
 244             if network.ports:
 245                 network.ports = self._network_ports
 246                 if (not noAct):
 247                     network.save()
 248                 return
 249
 250         # Now try a network that is a "NAT", since setting ports on a non-NAT
 251         # network doesn't make much sense.
 252         for networkSlice in self.networkslices.all():
 253             network = networkSlice.network
 254             if (network.owner.id != self.id):
 255                 continue
 256             if network.template.translation=="NAT":
 257                 network.ports = self._network_ports
 258                 if (not noAct):
 259                     network.save()
 260                 return
 261
 262         # uh oh, we didn't find a network
 263
 264         raise ValueError("No network was found that ports could be set on")
 265
 266
 267
 268
 269