Closes #14436: Add indexes for all GenericForeignKey fields (#14463)

* Closes #14436: Add PostgreSQL indexes for all GenericForeignKeys

* Add note about GFK indexes to developer docs

netbox/vpn/migrations/0001_initial.py

@@ -219,6 +219,10 @@ class Migration(migrations.Migration):
                 'ordering': ('tunnel', 'role', 'pk'),
             },
         ),
+        migrations.AddIndex(
+            model_name='tunneltermination',
+            index=models.Index(fields=['termination_type', 'termination_id'], name='vpn_tunnelt_termina_c1f04b_idx'),
+        ),
         migrations.AddConstraint(
             model_name='tunneltermination',
             constraint=models.UniqueConstraint(fields=('termination_type', 'termination_id'), name='vpn_tunneltermination_termination', violation_error_message='An object may be terminated to only one tunnel at a time.'),

netbox/vpn/migrations/0002_move_l2vpn.py

@@ -70,4 +70,8 @@ class Migration(migrations.Migration):
                 name='vpn_l2vpntermination_assigned_object'
             ),
         ),
+        migrations.AddIndex(
+            model_name='l2vpntermination',
+            index=models.Index(fields=['assigned_object_type', 'assigned_object_id'], name='vpn_l2vpnte_assigne_9c55f8_idx'),
+        ),
     ]

netbox/vpn/models/l2vpn.py

@@ -104,6 +104,9 @@ class L2VPNTermination(NetBoxModel):
 
     class Meta:
         ordering = ('l2vpn',)
+        indexes = (
+            models.Index(fields=('assigned_object_type', 'assigned_object_id')),
+        )
         constraints = (
             models.UniqueConstraint(
                 fields=('assigned_object_type', 'assigned_object_id'),

netbox/vpn/models/tunnels.py

@@ -143,6 +143,9 @@ class TunnelTermination(CustomFieldsMixin, CustomLinksMixin, TagsMixin, ChangeLo
 
     class Meta:
         ordering = ('tunnel', 'role', 'pk')
+        indexes = (
+            models.Index(fields=('termination_type', 'termination_id')),
+        )
         constraints = (
             models.UniqueConstraint(
                 fields=('termination_type', 'termination_id'),