plstackapi/core/models/sliver.py

   1 import os
   2 from django.db import models
   3 from django.core import exceptions
   4 from plstackapi.core.models import PlCoreBase
   5 from plstackapi.core.models import Image
   6 from plstackapi.core.models import Key
   7 from plstackapi.core.models import Slice
   8 from plstackapi.core.models import Node
   9 from plstackapi.core.models import Site
  10 from plstackapi.core.models import DeploymentNetwork
  11
  12 # Create your models here.
  13 class Sliver(PlCoreBase):
  14     instance_id = models.CharField(max_length=200, help_text="Nova instance id")
  15     name = models.CharField(max_length=200, help_text="Sliver name")
  16     instance_name = models.CharField(blank=True, null=True, max_length=200, help_text="OpenStack generated name")
  17     ip = models.GenericIPAddressField(help_text="Sliver ip address", blank=True, null=True)
  18     image = models.ForeignKey(Image, related_name='slivers')
  19     key = models.ForeignKey(Key, related_name='slivers')
  20     slice = models.ForeignKey(Slice, related_name='slivers')
  21     node = models.ForeignKey(Node, related_name='slivers')
  22     deploymentNetwork = models.ForeignKey(DeploymentNetwork, verbose_name='deployment', related_name='sliver_deploymentNetwork')
  23
  24     def __unicode__(self):  return u'%s::%s' % (self.slice, self.deploymentNetwork)
  25
  26     def save(self, *args, **kwds):
  27         if not self.slice.subnet.exists():
  28             raise exceptions.ValidationError, "Slice %s has no subnet" % self.slice.name
  29
  30         if not self.instance_id:
  31             instance = self.driver.spawn_instance(name=self.name,
  32                                    key_name = self.key.name,
  33                                    image_id = self.image.image_id,
  34                                    hostname = self.node.name )
  35             self.instance_id = instance.id
  36             self.instance_name = getattr(instance, 'OS-EXT-SRV-ATTR:instance_name')
  37
  38         super(Sliver, self).save(*args, **kwds)
  39
  40     def delete(self, *args, **kwds):
  41         if self.instance_id:
  42             self.driver.destroy_instance(self.instance_id)
  43
  44         super(Sliver, self).delete(*args, **kwds)