3 from django.db import models
4 from core.models import PlCoreBase, Site, Slice, Sliver
5 from django.contrib.contenttypes.models import ContentType
6 from django.contrib.contenttypes import generic
8 # If true, then IP addresses will be allocated by the model. If false, then
9 # we will assume the observer handles it.
12 class NetworkTemplate(PlCoreBase):
13 VISIBILITY_CHOICES = (('public', 'public'), ('private', 'private'))
14 TRANSLATION_CHOICES = (('none', 'none'), ('NAT', 'NAT'))
16 name = models.CharField(max_length=32)
17 description = models.CharField(max_length=1024, blank=True, null=True)
18 guaranteedBandwidth = models.IntegerField(default=0)
19 visibility = models.CharField(max_length=30, choices=VISIBILITY_CHOICES, default="private")
20 translation = models.CharField(max_length=30, choices=TRANSLATION_CHOICES, default="none")
21 sharedNetworkName = models.CharField(max_length=30, blank=True, null=True)
22 sharedNetworkId = models.CharField(null=True, blank=True, max_length=256, help_text="Quantum network")
24 def __unicode__(self): return u'%s' % (self.name)
26 class Network(PlCoreBase):
27 name = models.CharField(max_length=32)
28 template = models.ForeignKey(NetworkTemplate)
29 subnet = models.CharField(max_length=32, blank=True)
30 ports = models.CharField(max_length=1024, blank=True, null=True)
31 labels = models.CharField(max_length=1024, blank=True, null=True)
32 owner = models.ForeignKey(Slice, related_name="ownedNetworks", help_text="Slice that owns control of this Network")
34 guaranteedBandwidth = models.IntegerField(default=0)
35 permitAllSlices = models.BooleanField(default=False)
36 permittedSlices = models.ManyToManyField(Slice, blank=True, related_name="availableNetworks")
37 slices = models.ManyToManyField(Slice, blank=True, related_name="networks", through="NetworkSlice")
38 slivers = models.ManyToManyField(Sliver, blank=True, related_name="networks", through="NetworkSliver")
40 # for observer/manager
41 network_id = models.CharField(null=True, blank=True, max_length=256, help_text="Quantum network")
42 router_id = models.CharField(null=True, blank=True, max_length=256, help_text="Quantum router id")
43 subnet_id = models.CharField(null=True, blank=True, max_length=256, help_text="Quantum subnet id")
45 def __unicode__(self): return u'%s' % (self.name)
47 def save(self, *args, **kwds):
48 if (not self.subnet) and (NO_OBSERVER):
49 from util.network_subnet_allocator import find_unused_subnet
50 self.subnet = find_unused_subnet(existing_subnets=[x.subnet for x in Network.objects.all()])
51 super(Network, self).save(*args, **kwds)
53 class NetworkSlice(PlCoreBase):
54 # This object exists solely so we can implement the permission check when
55 # adding slices to networks. It adds no additional fields to the relation.
57 network = models.ForeignKey(Network)
58 slice = models.ForeignKey(Slice)
60 def save(self, *args, **kwds):
62 if (slice not in self.network.permittedSlices.all()) and (slice != self.network.owner) and (not self.network.permitAllSlices):
63 # to add a sliver to the network, then one of the following must be true:
64 # 1) sliver's slice is in network's permittedSlices list,
65 # 2) sliver's slice is network's owner, or
66 # 3) network's permitAllSlices is true
67 raise ValueError("Slice %s is not allowed to connect to network %s" % (str(slice), str(self.network)))
69 super(NetworkSlice, self).save(*args, **kwds)
71 def __unicode__(self): return u'%s-%s' % (self.network.name, self.slice.name)
73 class NetworkSliver(PlCoreBase):
74 network = models.ForeignKey(Network)
75 sliver = models.ForeignKey(Sliver)
76 ip = models.GenericIPAddressField(help_text="Sliver ip address", blank=True, null=True)
77 port_id = models.CharField(null=True, blank=True, max_length=256, help_text="Quantum port id")
79 def save(self, *args, **kwds):
80 slice = self.sliver.slice
81 if (slice not in self.network.permittedSlices.all()) and (slice != self.network.owner) and (not self.network.permitAllSlices):
82 # to add a sliver to the network, then one of the following must be true:
83 # 1) sliver's slice is in network's permittedSlices list,
84 # 2) sliver's slice is network's owner, or
85 # 3) network's permitAllSlices is true
86 raise ValueError("Slice %s is not allowed to connect to network %s" % (str(slice), str(self.network)))
88 if (not self.ip) and (NO_OBSERVER):
89 from util.network_subnet_allocator import find_unused_address
90 self.ip = find_unused_address(self.network.subnet,
91 [x.ip for x in self.network.networksliver_set.all()])
92 super(NetworkSliver, self).save(*args, **kwds)
94 def __unicode__(self): return u'%s-%s' % (self.network.name, self.sliver.instance_name)
96 class Router(PlCoreBase):
97 name = models.CharField(max_length=32)
98 owner = models.ForeignKey(Slice, related_name="routers")
99 permittedNetworks = models.ManyToManyField(Network, blank=True, related_name="availableRouters")
100 networks = models.ManyToManyField(Network, blank=True, related_name="routers")
102 def __unicode__(self): return u'%s' % (self.name)
104 class NetworkParameterType(PlCoreBase):
105 name = models.SlugField(help_text="The name of this parameter", max_length=128)
106 description = models.CharField(max_length=1024)
108 def __unicode__(self): return u'%s' % (self.name)
110 class NetworkParameter(PlCoreBase):
111 parameter = models.ForeignKey(NetworkParameterType, related_name="parameters", help_text="The type of the parameter")
112 value = models.CharField(help_text="The value of this parameter", max_length=1024)
114 # The required fields to do a ObjectType lookup, and object_id assignment
115 content_type = models.ForeignKey(ContentType)
116 object_id = models.PositiveIntegerField()
117 content_object = generic.GenericForeignKey('content_type', 'object_id')
119 def __unicode__(self):
120 return self.parameter.name