netbox-docker/startup_scripts/220_prefixes.py

import sys

from dcim.models import Site
from ipam.models import VLAN, VRF, Prefix, Role
from netaddr import IPNetwork
from startup_script_utils import load_yaml, pop_custom_fields, set_custom_fields_values
from tenancy.models import Tenant, TenantGroup

prefixes = load_yaml("/opt/netbox/initializers/prefixes.yml")

if prefixes is None:
    sys.exit()

optional_assocs = {
    "site": (Site, "name"),
    "tenant": (Tenant, "name"),
    "tenant_group": (TenantGroup, "name"),
    "vlan": (VLAN, "name"),
    "role": (Role, "name"),
    "vrf": (VRF, "name"),
}

for params in prefixes:
    custom_field_data = pop_custom_fields(params)

    params["prefix"] = IPNetwork(params["prefix"])

    for assoc, details in optional_assocs.items():
        if assoc in params:
            model, field = details
            query = {field: params.pop(assoc)}
            params[assoc] = model.objects.get(**query)

    prefix, created = Prefix.objects.get_or_create(**params)

    if created:
        set_custom_fields_values(prefix, custom_field_data)

        print("📌 Created Prefix", prefix.prefix)