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64 lines
1.8 KiB
Python
64 lines
1.8 KiB
Python
from django.contrib.postgres.fields import ArrayField
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from django.contrib.postgres.validators import ArrayMaxLengthValidator
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from django.core.exceptions import ValidationError
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from django.core.validators import MinValueValidator, MaxValueValidator
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from django.db import models
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from netaddr import AddrFormatError, EUI, mac_unix_expanded
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from ipam.constants import BGP_ASN_MAX, BGP_ASN_MIN
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class ASNField(models.BigIntegerField):
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description = "32-bit ASN field"
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default_validators = [
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MinValueValidator(BGP_ASN_MIN),
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MaxValueValidator(BGP_ASN_MAX),
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]
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def formfield(self, **kwargs):
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defaults = {
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'min_value': BGP_ASN_MIN,
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'max_value': BGP_ASN_MAX,
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}
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defaults.update(**kwargs)
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return super().formfield(**defaults)
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class mac_unix_expanded_uppercase(mac_unix_expanded):
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word_fmt = '%.2X'
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class MACAddressField(models.Field):
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description = "PostgreSQL MAC Address field"
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def python_type(self):
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return EUI
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def from_db_value(self, value, expression, connection):
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return self.to_python(value)
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def to_python(self, value):
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if value is None:
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return value
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try:
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return EUI(value, version=48, dialect=mac_unix_expanded_uppercase)
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except AddrFormatError as e:
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raise ValidationError("Invalid MAC address format: {}".format(value))
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def db_type(self, connection):
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return 'macaddr'
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def get_prep_value(self, value):
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if not value:
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return None
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return str(self.to_python(value))
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class PathField(ArrayField):
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"""
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An ArrayField which holds a set of objects, each identified by a (type, ID) tuple.
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"""
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def __init__(self, **kwargs):
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kwargs['base_field'] = models.CharField(max_length=40)
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super().__init__(**kwargs)
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