blob: 1fb629f688d5262bb99e9405dcfa7b9839110b01 [file] [log] [blame]
import os
import socket
from django.db import models
from core.models import PlCoreBase, Site, Slice, Sliver, Deployment
from core.models import DeploymentLinkManager,DeploymentLinkDeletionManager
from django.contrib.contenttypes.models import ContentType
from django.contrib.contenttypes import generic
from django.core.exceptions import ValidationError
# If true, then IP addresses will be allocated by the model. If false, then
# we will assume the observer handles it.
NO_OBSERVER=False
def ParseNatList(ports):
""" Support a list of ports in the format "protocol:port, protocol:port, ..."
examples:
tcp 123
tcp 123:133
tcp 123, tcp 124, tcp 125, udp 201, udp 202
User can put either a "/" or a " " between protocol and ports
Port ranges can be specified with "-" or ":"
"""
nats = []
if ports:
parts = ports.split(",")
for part in parts:
part = part.strip()
if "/" in part:
(protocol, ports) = part.split("/",1)
elif " " in part:
(protocol, ports) = part.split(None,1)
else:
raise TypeError('malformed port specifier %s, format example: "tcp 123, tcp 201:206, udp 333"' % part)
protocol = protocol.strip()
ports = ports.strip()
if not (protocol in ["udp", "tcp"]):
raise ValueError('unknown protocol %s' % protocol)
if "-" in ports:
(first, last) = ports.split("-")
first = int(first.strip())
last = int(last.strip())
portStr = "%d:%d" % (first, last)
elif ":" in ports:
(first, last) = ports.split(":")
first = int(first.strip())
last = int(last.strip())
portStr = "%d:%d" % (first, last)
else:
portStr = "%d" % int(ports)
nats.append( {"l4_protocol": protocol, "l4_port": portStr} )
return nats
def ValidateNatList(ports):
try:
ParseNatList(ports)
except Exception,e:
raise ValidationError(str(e))
class NetworkTemplate(PlCoreBase):
VISIBILITY_CHOICES = (('public', 'public'), ('private', 'private'))
TRANSLATION_CHOICES = (('none', 'none'), ('NAT', 'NAT'))
TOPOLOGY_CHOICES = (('bigswitch', 'BigSwitch'), ('physical', 'Physical'), ('custom', 'Custom'))
CONTROLLER_CHOICES = ((None, 'None'), ('onos', 'ONOS'), ('custom', 'Custom'))
name = models.CharField(max_length=32)
description = models.CharField(max_length=1024, blank=True, null=True)
guaranteedBandwidth = models.IntegerField(default=0)
visibility = models.CharField(max_length=30, choices=VISIBILITY_CHOICES, default="private")
translation = models.CharField(max_length=30, choices=TRANSLATION_CHOICES, default="none")
sharedNetworkName = models.CharField(max_length=30, blank=True, null=True)
sharedNetworkId = models.CharField(null=True, blank=True, max_length=256, help_text="Quantum network")
topologyKind = models.CharField(null=False, blank=False, max_length=30, choices=TOPOLOGY_CHOICES, default="BigSwitch")
controllerKind = models.CharField(null=True, blank=True, max_length=30, choices=CONTROLLER_CHOICES, default=None)
def __unicode__(self): return u'%s' % (self.name)
class Network(PlCoreBase):
name = models.CharField(max_length=32)
template = models.ForeignKey(NetworkTemplate)
subnet = models.CharField(max_length=32, blank=True)
ports = models.CharField(max_length=1024, blank=True, null=True, validators=[ValidateNatList])
labels = models.CharField(max_length=1024, blank=True, null=True)
owner = models.ForeignKey(Slice, related_name="ownedNetworks", help_text="Slice that owns control of this Network")
guaranteedBandwidth = models.IntegerField(default=0)
permitAllSlices = models.BooleanField(default=False)
permittedSlices = models.ManyToManyField(Slice, blank=True, related_name="availableNetworks")
slices = models.ManyToManyField(Slice, blank=True, related_name="networks", through="NetworkSlice")
slivers = models.ManyToManyField(Sliver, blank=True, related_name="networks", through="NetworkSliver")
topologyParameters = models.TextField(null=True, blank=True)
controllerParameters = models.TextField(null=True, blank=True)
# for observer/manager
network_id = models.CharField(null=True, blank=True, max_length=256, help_text="Quantum network")
router_id = models.CharField(null=True, blank=True, max_length=256, help_text="Quantum router id")
subnet_id = models.CharField(null=True, blank=True, max_length=256, help_text="Quantum subnet id")
def __unicode__(self): return u'%s' % (self.name)
def save(self, *args, **kwds):
if (not self.subnet) and (NO_OBSERVER):
from util.network_subnet_allocator import find_unused_subnet
self.subnet = find_unused_subnet(existing_subnets=[x.subnet for x in Network.objects.all()])
super(Network, self).save(*args, **kwds)
def can_update(self, user):
return self.owner.can_update(user)
@property
def nat_list(self):
return ParseNatList(self.ports)
@staticmethod
def select_by_user(user):
if user.is_admin:
qs = Network.objects.all()
else:
slices = Slice.select_by_user(user)
#slice_ids = [s.id for s in Slice.select_by_user(user)]
qs = Network.objects.filter(owner__in=slices)
return qs
class NetworkDeployments(PlCoreBase):
objects = DeploymentLinkManager()
deleted_objects = DeploymentLinkDeletionManager()
# Stores the openstack ids at various deployments
network = models.ForeignKey(Network, related_name='networkdeployments')
deployment = models.ForeignKey(Deployment, related_name='networkdeployments')
net_id = models.CharField(null=True, blank=True, max_length=256, help_text="Quantum network")
router_id = models.CharField(null=True, blank=True, max_length=256, help_text="Quantum router id")
subnet_id = models.CharField(null=True, blank=True, max_length=256, help_text="Quantum subnet id")
subnet = models.CharField(max_length=32, blank=True)
def can_update(self, user):
return user.is_admin
@staticmethod
def select_by_user(user):
if user.is_admin:
qs = NetworkDeployments.objects.all()
else:
slices = Slice.select_by_user(user)
networks = Network.objects.filter(owner__in=slices)
qs = NetworkDeployments.objects.filter(network__in=networks)
return qs
class NetworkSlice(PlCoreBase):
# This object exists solely so we can implement the permission check when
# adding slices to networks. It adds no additional fields to the relation.
network = models.ForeignKey(Network,related_name='networkslices')
slice = models.ForeignKey(Slice,related_name='networkslices')
def save(self, *args, **kwds):
slice = self.slice
if (slice not in self.network.permittedSlices.all()) and (slice != self.network.owner) and (not self.network.permitAllSlices):
# to add a sliver to the network, then one of the following must be true:
# 1) sliver's slice is in network's permittedSlices list,
# 2) sliver's slice is network's owner, or
# 3) network's permitAllSlices is true
raise ValueError("Slice %s is not allowed to connect to network %s" % (str(slice), str(self.network)))
super(NetworkSlice, self).save(*args, **kwds)
def __unicode__(self): return u'%s-%s' % (self.network.name, self.slice.name)
def can_update(self, user):
return self.slice.can_update(user)
@staticmethod
def select_by_user(user):
if user.is_admin:
qs = NetworkSlice.objects.all()
else:
slice_ids = [s.id for s in Slice.select_by_user(user)]
qs = NetworkSlice.objects.filter(id__in=slice_ids)
return qs
class NetworkSliver(PlCoreBase):
network = models.ForeignKey(Network,related_name='networkslivers')
sliver = models.ForeignKey(Sliver,related_name='networkslivers')
ip = models.GenericIPAddressField(help_text="Sliver ip address", blank=True, null=True)
port_id = models.CharField(null=True, blank=True, max_length=256, help_text="Quantum port id")
def save(self, *args, **kwds):
slice = self.sliver.slice
if (slice not in self.network.permittedSlices.all()) and (slice != self.network.owner) and (not self.network.permitAllSlices):
# to add a sliver to the network, then one of the following must be true:
# 1) sliver's slice is in network's permittedSlices list,
# 2) sliver's slice is network's owner, or
# 3) network's permitAllSlices is true
raise ValueError("Slice %s is not allowed to connect to network %s" % (str(slice), str(self.network)))
if (not self.ip) and (NO_OBSERVER):
from util.network_subnet_allocator import find_unused_address
self.ip = find_unused_address(self.network.subnet,
[x.ip for x in self.network.networksliver_set.all()])
super(NetworkSliver, self).save(*args, **kwds)
def __unicode__(self): return u'%s-%s' % (self.network.name, self.sliver.instance_name)
def can_update(self, user):
return self.sliver.can_update(user)
@staticmethod
def select_by_user(user):
if user.is_admin:
qs = NetworkSliver.objects.all()
else:
sliver_ids = [s.id for s in NetworkSliver.select_by_user(user)]
qs = NetworkSliver.objects.filter(id__in=sliver_ids)
return qs
class Router(PlCoreBase):
name = models.CharField(max_length=32)
owner = models.ForeignKey(Slice, related_name="routers")
permittedNetworks = models.ManyToManyField(Network, blank=True, related_name="availableRouters")
networks = models.ManyToManyField(Network, blank=True, related_name="routers")
def __unicode__(self): return u'%s' % (self.name)
class NetworkParameterType(PlCoreBase):
name = models.SlugField(help_text="The name of this parameter", max_length=128)
description = models.CharField(max_length=1024)
def __unicode__(self): return u'%s' % (self.name)
class NetworkParameter(PlCoreBase):
parameter = models.ForeignKey(NetworkParameterType, related_name="networkparameters", help_text="The type of the parameter")
value = models.CharField(help_text="The value of this parameter", max_length=1024)
# The required fields to do a ObjectType lookup, and object_id assignment
content_type = models.ForeignKey(ContentType)
object_id = models.PositiveIntegerField()
content_object = generic.GenericForeignKey('content_type', 'object_id')
def __unicode__(self):
return self.parameter.name