import logging from django.db.models.signals import post_delete, post_save, pre_save from django.dispatch import receiver from ipam.models import IPAddress from netbox_ddns.background_tasks import update_dns logger = logging.getLogger('netbox_ddns') @receiver(pre_save, sender=IPAddress) def store_original_ipaddress(instance: IPAddress, **_kwargs): instance.before_save = IPAddress.objects.filter(pk=instance.pk).first() @receiver(post_save, sender=IPAddress) def trigger_ddns_update(instance: IPAddress, **_kwargs): old_address = instance.before_save.address if instance.before_save else None old_dns_name = instance.before_save.dns_name if instance.before_save else '' if instance.address != old_address or instance.dns_name != old_dns_name: # IP address or DNS name has changed update_dns.delay( old_record=instance.before_save, new_record=instance, ) @receiver(post_delete, sender=IPAddress) def trigger_ddns_delete(instance: IPAddress, **_kwargs): update_dns.delay( old_record=instance, )