| 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')) |
| |
| 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") |
| |
| 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") |
| |
| # 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) |
| deployment = models.ForeignKey(Deployment) |
| 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) |
| slice = models.ForeignKey(Slice) |
| |
| 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) |
| sliver = models.ForeignKey(Sliver) |
| 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="parameters", 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 |
| |
| |