[controller] Preparation to solve duplicated IP issue

django_netjsonconfig/base/device.py

@@ -45,10 +45,12 @@ class AbstractDevice(BaseModel):
     # with data received from devices
     last_ip = models.GenericIPAddressField(blank=True,
                                            null=True,
+                                           db_index=True,
                                            help_text=_('indicates the IP address logged from '
                                                        'the last request coming from the device'))
     management_ip = models.GenericIPAddressField(blank=True,
                                                  null=True,
+                                                 db_index=True,
                                                  help_text=_('ip address of the management interface, '
                                                              'if available'))
     hardware_id = models.CharField(**(app_settings.HARDWARE_ID_OPTIONS))

django_netjsonconfig/controller/generics.py

@@ -34,7 +34,7 @@ def dispatch(self, request, *args, **kwargs):
 
 class UpdateLastIpMixin(object):
     def update_last_ip(self, device, request):
-        update_last_ip(device, request)
+        return update_last_ip(device, request)
 
 
 class BaseDeviceChecksumView(UpdateLastIpMixin, BaseConfigView):

django_netjsonconfig/migrations/0043_add_indexes_on_ip_fields.py

@@ -0,0 +1,23 @@
+# Generated by Django 3.0.4 on 2020-04-12 02:07
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('django_netjsonconfig', '0042_device_key_none'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='device',
+            name='last_ip',
+            field=models.GenericIPAddressField(blank=True, db_index=True, help_text='indicates the IP address logged from the last request coming from the device', null=True),
+        ),
+        migrations.AlterField(
+            model_name='device',
+            name='management_ip',
+            field=models.GenericIPAddressField(blank=True, db_index=True, help_text='ip address of the management interface, if available', null=True),
+        ),
+    ]

django_netjsonconfig/utils.py

@@ -72,6 +72,7 @@ def update_last_ip(device, request):
         changed = True
     if changed:
         device.save()
+    return changed
 
 
 def forbid_unallowed(request, param_group, param, allowed_values=None):