9627 add stuff for utilization calc

netbox/ipam/migrations/0070_vlangroup_vlan_id_ranges.py

@@ -2,7 +2,7 @@
 
 import django.contrib.postgres.fields
 import django.contrib.postgres.fields.ranges
-from django.db import migrations
+from django.db import migrations, models
 from django.db.backends.postgresql.psycopg_any import NumericRange
 
 
@@ -26,6 +26,11 @@ class Migration(migrations.Migration):
             name='vlan_id_ranges',
             field=django.contrib.postgres.fields.ArrayField(base_field=django.contrib.postgres.fields.ranges.BigIntegerRangeField(), blank=True, null=True, size=None),
         ),
+        migrations.AddField(
+            model_name='vlangroup',
+            name='_total_vlan_ids',
+            field=models.PositiveBigIntegerField(default=0),
+        ),
         migrations.RunPython(
             code=move_min_max,
             reverse_code=migrations.RunPython.noop

netbox/ipam/models/vlans.py

@@ -53,6 +53,9 @@ class VLANGroup(OrganizationalModel):
         blank=True,
         null=True
     )
+    _total_vlan_ids = models.PositiveBigIntegerField(
+        default=0
+    )
 
     objects = VLANGroupQuerySet.as_manager()
 
@@ -92,6 +95,13 @@ class VLANGroup(OrganizationalModel):
                 'max_vid': _("Maximum child VID must be greater than or equal to minimum child VID")
             })
 
+    def save(self, *args, **kwargs):
+        self._total_vlan_ids = 0
+        for range in vland_id_ranges:
+            self._total_vlan_ids += range.upper - range.lower + 1
+
+        super().save(*args, **kwargs)
+
     def get_available_vids(self):
         """
         Return all available VLANs within this group.