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 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.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() if not self.creator and hasattr(self, 'caller'): self.creator = self.caller super(Slice, self).save(*args, **kwds) def can_update(self, user): if user.is_readonly: return False if user.is_admin: return True # slice admins can update slice_privs = SlicePrivilege.objects.filter(user=user, slice=self) for slice_priv in slice_privs: if slice_priv.role.role == 'admin': return True # site pis can update site_privs = SitePrivilege.objects.filter(user=user, site=self.site) for site_priv in site_privs: if site_priv.role.role == '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)