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62 lines
2.2 KiB
Python
62 lines
2.2 KiB
Python
import logging
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from django.db.models.signals import post_save, post_delete
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from django.dispatch import receiver
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from dcim.exceptions import UnsupportedCablePath
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from dcim.models import CablePath, Interface
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from dcim.utils import create_cablepath
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from utilities.exceptions import AbortRequest
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from .models import WirelessLink
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#
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# Wireless links
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#
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@receiver(post_save, sender=WirelessLink)
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def update_connected_interfaces(instance, created, raw=False, **kwargs):
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"""
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When a WirelessLink is saved, save a reference to it on each connected interface.
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"""
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logger = logging.getLogger('netbox.wireless.wirelesslink')
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if raw:
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logger.debug(f"Skipping endpoint updates for imported wireless link {instance}")
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return
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if instance.interface_a.wireless_link != instance:
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logger.debug(f"Updating interface A for wireless link {instance}")
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instance.interface_a.wireless_link = instance
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instance.interface_a.save()
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if instance.interface_b.cable != instance:
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logger.debug(f"Updating interface B for wireless link {instance}")
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instance.interface_b.wireless_link = instance
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instance.interface_b.save()
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# Create/update cable paths
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if created:
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for interface in (instance.interface_a, instance.interface_b):
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try:
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create_cablepath([interface])
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except UnsupportedCablePath as e:
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raise AbortRequest(e)
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@receiver(post_delete, sender=WirelessLink)
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def nullify_connected_interfaces(instance, **kwargs):
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"""
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When a WirelessLink is deleted, update its two connected Interfaces
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"""
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logger = logging.getLogger('netbox.wireless.wirelesslink')
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if instance.interface_a is not None:
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logger.debug(f"Nullifying interface A for wireless link {instance}")
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Interface.objects.filter(pk=instance.interface_a.pk).update(wireless_link=None)
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if instance.interface_b is not None:
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logger.debug(f"Nullifying interface B for wireless link {instance}")
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Interface.objects.filter(pk=instance.interface_b.pk).update(wireless_link=None)
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# Delete and retrace any dependent cable paths
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for cablepath in CablePath.objects.filter(_nodes__contains=instance):
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cablepath.delete()
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