Source code for nsot.models.assignment

from __future__ import unicode_literals

from django.db import models

from .. import exc, validators

[docs]class Assignment(models.Model): """ DB object for assignment of addresses to interfaces (on devices). This is used to enforce constraints at the relationship level for addition of new address assignments. """ address = models.ForeignKey( 'Network', related_name='assignments', db_index=True, help_text='Network to which this assignment is bound.' ) interface = models.ForeignKey( 'Interface', related_name='assignments', db_index=True, help_text='Interface to which this assignment is bound.' ) created = models.DateTimeField(auto_now_add=True) def __unicode__(self): return u'interface=%s, address=%s' % (self.interface, self.address) class Meta: unique_together = ('address', 'interface') index_together = unique_together
[docs] def clean_address(self, value): """Enforce that new addresses can only be host addresses.""" addr = validators.validate_host_address(value) # Enforce uniqueness upon assignment. existing = Assignment.objects.filter(address=addr) if existing.filter(interface__device=self.interface.device).exists(): raise exc.ValidationError({ 'address': 'Address already assigned to this Device.' }) return value
def clean_fields(self, exclude=None): self.clean_address(self.address) self.address.set_assigned() def save(self, *args, **kwargs): self.full_clean() super(Assignment, self).save(*args, **kwargs) def to_dict(self): return { 'id':, 'device':, 'hostname': self.interface.device_hostname, 'interface':, 'interface_name':, 'address': self.address.cidr, }