mirror of
https://github.com/netbox-community/netbox.git
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113 lines
3.7 KiB
Python
113 lines
3.7 KiB
Python
from django.contrib.contenttypes.fields import GenericRelation, GenericForeignKey
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from django.contrib.contenttypes.models import ContentType
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from django.core.exceptions import ValidationError
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from django.db import models
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from django.urls import reverse
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from ipam.choices import L2VPNTypeChoices
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from ipam.constants import L2VPN_ASSIGNMENT_MODELS
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from netbox.models import NetBoxModel
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class L2VPN(NetBoxModel):
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name = models.CharField(
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max_length=100,
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unique=True
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)
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slug = models.SlugField()
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type = models.CharField(max_length=50, choices=L2VPNTypeChoices)
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identifier = models.BigIntegerField(
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null=True,
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blank=True,
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unique=True
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)
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import_targets = models.ManyToManyField(
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to='ipam.RouteTarget',
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related_name='importing_l2vpns',
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blank=True,
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)
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export_targets = models.ManyToManyField(
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to='ipam.RouteTarget',
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related_name='exporting_l2vpns',
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blank=True
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)
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description = models.TextField(null=True, blank=True)
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tenant = models.ForeignKey(
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to='tenancy.Tenant',
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on_delete=models.PROTECT,
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related_name='l2vpns',
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blank=True,
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null=True
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)
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contacts = GenericRelation(
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to='tenancy.ContactAssignment'
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)
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class Meta:
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ordering = ('identifier', 'name')
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verbose_name = 'L2VPN'
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def __str__(self):
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if self.identifier:
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return f'{self.name} ({self.identifier})'
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return f'{self.name}'
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def get_absolute_url(self):
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return reverse('ipam:l2vpn', args=[self.pk])
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class L2VPNTermination(NetBoxModel):
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l2vpn = models.ForeignKey(
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to='ipam.L2VPN',
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on_delete=models.CASCADE,
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related_name='terminations'
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)
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assigned_object_type = models.ForeignKey(
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to=ContentType,
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limit_choices_to=L2VPN_ASSIGNMENT_MODELS,
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on_delete=models.PROTECT,
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related_name='+'
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)
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assigned_object_id = models.PositiveBigIntegerField()
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assigned_object = GenericForeignKey(
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ct_field='assigned_object_type',
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fk_field='assigned_object_id'
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)
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class Meta:
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ordering = ('l2vpn',)
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verbose_name = 'L2VPN Termination'
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constraints = (
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models.UniqueConstraint(
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fields=('assigned_object_type', 'assigned_object_id'),
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name='ipam_l2vpntermination_assigned_object'
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),
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)
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def __str__(self):
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if self.pk is not None:
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return f'{self.assigned_object} <> {self.l2vpn}'
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return super().__str__()
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def get_absolute_url(self):
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return reverse('ipam:l2vpntermination', args=[self.pk])
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def clean(self):
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# Only check is assigned_object is set. Required otherwise we have an Integrity Error thrown.
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if self.assigned_object:
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obj_id = self.assigned_object.pk
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obj_type = ContentType.objects.get_for_model(self.assigned_object)
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if L2VPNTermination.objects.filter(assigned_object_id=obj_id, assigned_object_type=obj_type).\
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exclude(pk=self.pk).count() > 0:
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raise ValidationError(f'L2VPN Termination already assigned ({self.assigned_object})')
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# Only check if L2VPN is set and is of type P2P
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if self.l2vpn and self.l2vpn.type in L2VPNTypeChoices.P2P:
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terminations_count = L2VPNTermination.objects.filter(l2vpn=self.l2vpn).exclude(pk=self.pk).count()
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if terminations_count >= 2:
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l2vpn_type = self.l2vpn.get_type_display()
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raise ValidationError(
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f'{l2vpn_type} L2VPNs cannot have more than two terminations; found {terminations_count} already '
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f'defined.'
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)
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