blob: 7e9836c9b0cc083534e45ca9cec6267bfa5317f0 [file] [log] [blame]
from core.models import Slice, SlicePrivilege, SliceRole, Sliver, Site, Node, User
from plus import PlusObjectMixin
from operator import itemgetter, attrgetter
class SlicePlus(Slice, PlusObjectMixin):
class Meta:
proxy = True
def __init__(self, *args, **kwargs):
super(SlicePlus, self).__init__(*args, **kwargs)
self._update_users = None
self._sliceInfo = None
self.getSliceInfo()
self._site_allocation = self._sliceInfo["sitesUsed"]
self._initial_site_allocation = self._site_allocation
def getSliceInfo(self, user=None):
if not self._sliceInfo:
used_sites = {}
used_deployments = {}
sliverCount = 0
for sliver in self.slivers.all():
site = sliver.node.site_deployment.site
deployment = sliver.node.site_deployment.deployment
used_sites[site.name] = used_sites.get(site.name, 0) + 1
used_deployments[deployment.name] = used_deployments.get(deployment.name, 0) + 1
sliverCount = sliverCount + 1
users = {}
for priv in SlicePrivilege.objects.filter(slice=self):
if not (priv.user.id in users.keys()):
users[priv.user.id] = {"name": priv.user.email, "id": priv.user.id, "roles": []}
users[priv.user.id]["roles"].append(priv.role.role)
self._sliceInfo= {"sitesUsed": used_sites,
"deploymentsUsed": used_deployments,
"sliverCount": sliverCount,
"siteCount": len(used_sites.keys()),
"users": users,
"roles": []}
if user:
auser = self._sliceInfo["users"].get(user.id, None)
if (auser):
self._sliceInfo["roles"] = auser["roles"]
return self._sliceInfo
@property
def site_allocation(self):
return self._site_allocation
@site_allocation.setter
def site_allocation(self, value):
self._site_allocation = value
@property
def user_names(self):
return [user["name"] for user in self.getSliceInfo()["users"].values()]
@user_names.setter
def user_names(self, value):
pass # it's read-only
@property
def users(self):
return [user["id"] for user in self.getSliceInfo()["users"].values()]
@users.setter
def users(self, value):
self._update_users = value
#print "XXX set users to", value
@property
def network_ports(self):
# XXX this assumes there is only one network that can have ports bound
# to it for a given slice. This is intended for the tenant view, which
# will obey this field.
networkPorts = ""
for networkSlice in self.networkslices.all():
network = networkSlice.network
if network.ports:
networkPorts = network.ports
return networkPorts
@network_ports.setter
def network_ports(self, value):
print "XXX set networkPorts to", value
@staticmethod
def select_by_user(user):
if user.is_admin:
qs = SlicePlus.objects.all()
else:
slice_ids = [sp.slice.id for sp in SlicePrivilege.objects.filter(user=user)]
qs = SlicePlus.objects.filter(id__in=slice_ids)
return qs
def get_node_allocation(self, siteList):
siteIDList = [site.id for site in siteList]
nodeList = []
for node in Node.objects.all():
if (node.site_deployment.site.id in siteIDList):
node.sliverCount = 0
for sliver in node.slivers.all():
if sliver.slice.id == self.id:
node.sliverCount = node.sliverCount + 1
nodeList.append(node)
return nodeList
def save(self, *args, **kwargs):
updated_image = self.has_field_changed("default_image")
updated_flavor = self.has_field_changed("default_flavor")
super(SlicePlus, self).save(*args, **kwargs)
updated_sites = (self._site_allocation != self._initial_site_allocation) or updated_image or updated_flavor
if updated_sites:
self.save_site_allocation(noAct=True, reset=(updated_image or updated_flavor))
if self._update_users:
self.save_users(noAct=True)
if updated_sites:
self.save_site_allocation(reset=(updated_image or updated_flavor))
if self._update_users:
self.save_users()
def save_site_allocation(self, noAct = False, reset=False):
print "save_site_allocation, reset=",reset
if (not self._site_allocation):
# Must be a sliver that was just created, and has not site_allocation
# field.
return
all_slice_slivers = self.slivers.all()
for site_name in self._site_allocation.keys():
desired_allocation = self._site_allocation[site_name]
# make a list of the slivers for this site
slivers = []
for sliver in all_slice_slivers:
if sliver.node.site_deployment.site.name == site_name:
slivers.append(sliver)
# delete extra slivers
while (reset and len(slivers)>0) or (len(slivers) > desired_allocation):
sliver = slivers.pop()
if (not noAct):
print "deleting sliver", sliver
sliver.delete()
else:
print "would delete sliver", sliver
# add more slivers
if (len(slivers) < desired_allocation):
site = Site.objects.get(name = site_name)
nodes = self.get_node_allocation([site])
if (not nodes):
raise ValueError("no nodes in site %s" % site_name)
while (len(slivers) < desired_allocation):
# pick the least allocated node
nodes = sorted(nodes, key=attrgetter("sliverCount"))
node = nodes[0]
sliver = Sliver(name=node.name,
slice=self,
node=node,
image = self.default_image,
flavor = self.default_flavor,
creator = self.creator,
deployment = node.site_deployment.deployment)
slivers.append(sliver)
if (not noAct):
print "added sliver", sliver
sliver.save()
else:
print "would add sliver", sliver
node.sliverCount = node.sliverCount + 1
def save_users(self, noAct = False):
new_users = self._update_users
default_role = SliceRole.objects.get(role="default")
slice_privs = self.sliceprivileges.all()
slice_user_ids = [priv.user.id for priv in slice_privs]
for user_id in new_users:
if (user_id not in slice_user_ids):
priv = SlicePrivilege(slice=self, user=User.objects.get(id=user_id), role=default_role)
if (not noAct):
priv.save()
print "added user id", user_id
for priv in slice_privs:
if (priv.role.id != default_role.id):
# only mess with 'default' users; don't kill an admin
continue
if (priv.user.id not in new_users):
if (not noAct):
priv.delete()
print "deleted user id", user_id