blob: 476cf8ed1bf526a58940b671f1abc24662b54de6 [file] [log] [blame]
import os
from django.db import models
from core.models import PlCoreBase
from core.models import Site
from core.models.site import SitePrivilege
from core.models import User
from core.models import Role
from core.models import Controller,ControllerLinkManager,ControllerLinkDeletionManager
from core.models import ServiceClass
from core.models.serviceclass import get_default_serviceclass
from core.models import Tag
from django.contrib.contenttypes import generic
from core.models import Service
from core.models import Controller
from core.models import Flavor, Image
from django.core.exceptions import PermissionDenied, ValidationError
# Create your models here.
class Slice(PlCoreBase):
name = models.CharField(unique=True, help_text="The Name of the Slice", max_length=80)
enabled = models.BooleanField(default=True, help_text="Status for this Slice")
omf_friendly = models.BooleanField(default=False)
description=models.TextField(blank=True,help_text="High level description of the slice and expected activities", max_length=1024)
slice_url = models.URLField(blank=True, max_length=512)
site = models.ForeignKey(Site, related_name='slices', help_text="The Site this Slice belongs to")
max_slivers = models.IntegerField(default=10)
service = models.ForeignKey(Service, related_name='service', null=True, blank=True)
network = models.CharField(default="Private Only",null=True, blank=True, max_length=256)
tags = generic.GenericRelation(Tag)
serviceClass = models.ForeignKey(ServiceClass, related_name = "slices", null=True, default=get_default_serviceclass)
creator = models.ForeignKey(User, related_name='slices', blank=True, null=True)
# for tenant view
default_flavor = models.ForeignKey(Flavor, related_name = "slices", null=True, blank=True)
default_image = models.ForeignKey(Image, related_name = "slices", null=True, blank=True);
mount_data_sets = models.CharField(default="GenBank",null=True, blank=True, max_length=256)
def __unicode__(self): return u'%s' % (self.name)
@property
def slicename(self):
return "%s_%s" % (self.site.login_base, self.name)
def save(self, *args, **kwds):
site = Site.objects.get(id=self.site.id)
# allow preexisting slices to keep their original name for now
if not self.id and not self.name.startswith(site.login_base):
raise ValidationError('slice name must begin with %s' % site.login_base)
if self.name == site.login_base+"_":
raise ValidationError('slice name is too short')
if " " in self.name:
raise ValidationError('slice name must not contain spaces')
if self.serviceClass is None:
# We allowed None=True for serviceClass because Django evolution
# will fail unless it is allowed. But, we we really don't want it to
# ever save None, so fix it up here.
self.serviceClass = ServiceClass.get_default()
# set creator on first save
if not self.creator and hasattr(self, 'caller'):
self.creator = self.caller
# only admins change a slice's creator
if 'creator' in self.changed_fields and \
(not hasattr(self, 'caller') or not self.caller.is_admin):
if (self._initial["creator"]==None) and (self.creator==getattr(self,"caller",None)):
# it's okay if the creator is being set by the caller to
# himeself on a new slice object.
pass
else:
raise PermissionDenied("Insufficient privileges to change slice creator")
if not self.creator:
raise ValidationError('slice has no creator')
super(Slice, self).save(*args, **kwds)
def can_update(self, user):
if user.is_readonly:
return False
if user.is_admin:
return True
if user == self.creator:
return True
# slice admins can update
if SlicePrivilege.objects.filter(
user=user, slice=self, role__role='admin'):
return True
# site pis can update
if SitePrivilege.objects.filter(
user=user, site=self.site, role__role__in=['admin', 'pi']):
return True
return False
@staticmethod
def select_by_user(user):
if user.is_admin:
qs = Slice.objects.all()
else:
# users can see slices they belong to
slice_ids = [sp.slice.id for sp in SlicePrivilege.objects.filter(user=user)]
# pis can see slices at their sites
sites = [sp.site for sp in SitePrivilege.objects.filter(user=user)\
if sp.role.role == 'pi']
slice_ids.extend([s.id for s in Slice.objects.filter(site__in=sites)])
qs = Slice.objects.filter(id__in=slice_ids)
return qs
def delete(self, *args, **kwds):
# delete networks associated with this slice
from core.models.network import Network
nets = Network.objects.filter(slices=self)
nets.delete()
# delete slice controllers
slice_controllers = ControllerSlice.objects.filter(slice=self)
slice_controllers.delete()
# delete slice privilege
slice_privileges = SlicePrivilege.objects.filter(slice=self)
slice_privileges.delete()
# continue with normal delete
super(Slice, self).delete(*args, **kwds)
class SliceRole(PlCoreBase):
ROLE_CHOICES = (('admin','Admin'),('default','Default'))
role = models.CharField(choices=ROLE_CHOICES, unique=True, max_length=30)
def __unicode__(self): return u'%s' % (self.role)
class SlicePrivilege(PlCoreBase):
user = models.ForeignKey('User', related_name='sliceprivileges')
slice = models.ForeignKey('Slice', related_name='sliceprivileges')
role = models.ForeignKey('SliceRole',related_name='sliceprivileges')
def __unicode__(self): return u'%s %s %s' % (self.slice, self.user, self.role)
def can_update(self, user):
return self.slice.can_update(user)
@staticmethod
def select_by_user(user):
if user.is_admin:
qs = SlicePrivilege.objects.all()
else:
sp_ids = [sp.id for sp in SlicePrivilege.objects.filter(user=user)]
qs = SlicePrivilege.objects.filter(id__in=sp_ids)
return qs
class ControllerSlice(PlCoreBase):
objects = ControllerLinkManager()
deleted_objects = ControllerLinkDeletionManager()
controller = models.ForeignKey(Controller, related_name='controllerslices')
slice = models.ForeignKey(Slice, related_name='controllerslices')
tenant_id = models.CharField(null=True, blank=True, max_length=200, help_text="Keystone tenant id")
def __unicode__(self): return u'%s %s' % (self.slice, self.controller)
@staticmethod
def select_by_user(user):
if user.is_admin:
qs = ControllerSlice.objects.all()
else:
slices = Slice.select_by_user(user)
qs = ControllerSlice.objects.filter(slice__in=slices)
return qs
def get_cpu_stats(self):
filter = 'project_id=%s'%self.tenant_id
return monitor.get_meter('cpu',filter,None)
def get_bw_stats(self):
filter = 'project_id=%s'%self.tenant_id
return monitor.get_meter('network.outgoing.bytes',filter,None)
def get_node_stats(self):
return len(self.slice.slivers)