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Closes #20564: Many-to-many pass-through port mappings (#20851)

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This commit is contained in:
Jeremy Stretch
2025-12-09 12:17:17 -05:00
committed by GitHub
parent 97d0a16fd4
commit 17d8f78ae3
35 changed files with 2512 additions and 941 deletions
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25
netbox/dcim/signals.py
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@@ -1,5 +1,6 @@
import logging
from django.db.models import Q
from django.db.models.signals import post_save, post_delete
from django.dispatch import receiver
@@ -7,7 +8,7 @@ from dcim.choices import CableEndChoices, LinkStatusChoices
from virtualization.models import VMInterface
from .models import (
Cable, CablePath, CableTermination, ConsolePort, ConsoleServerPort, Device, DeviceBay, FrontPort, Interface,
InventoryItem, ModuleBay, PathEndpoint, PowerOutlet, PowerPanel, PowerPort, Rack, RearPort, Location,
InventoryItem, ModuleBay, PathEndpoint, PortMapping, PowerOutlet, PowerPanel, PowerPort, Rack, RearPort, Location,
VirtualChassis,
)
from .models.cables import trace_paths
@@ -135,6 +136,17 @@ def retrace_cable_paths(instance, **kwargs):
cablepath.retrace()
@receiver((post_delete, post_save), sender=PortMapping)
def update_passthrough_port_paths(instance, **kwargs):
"""
When a PortMapping is created or deleted, retrace any CablePaths which traverse its front and/or rear ports.
"""
for cablepath in CablePath.objects.filter(
Q(_nodes__contains=instance.front_port) | Q(_nodes__contains=instance.rear_port)
):
cablepath.retrace()
@receiver(post_delete, sender=CableTermination)
def nullify_connected_endpoints(instance, **kwargs):
"""
@@ -150,17 +162,6 @@ def nullify_connected_endpoints(instance, **kwargs):
cablepath.retrace()
@receiver(post_save, sender=FrontPort)
def extend_rearport_cable_paths(instance, created, raw, **kwargs):
"""
When a new FrontPort is created, add it to any CablePaths which end at its corresponding RearPort.
"""
if created and not raw:
rearport = instance.rear_port
for cablepath in CablePath.objects.filter(_nodes__contains=rearport):
cablepath.retrace()
@receiver(post_save, sender=Interface)
@receiver(post_save, sender=VMInterface)
def update_mac_address_interface(instance, created, raw, **kwargs):