add new /sizes endpoint

uncloud/urls.py

@@ -69,7 +69,7 @@ router.register(r'v1/user/register', authviews.AccountManagementViewSet, basenam
 
 # Net
 router.register(r'v2/net/wireguardvpn', netviews.WireGuardVPNViewSet, basename='wireguardvpnnetwork')
-#router.register(r'v1/admin/vpnreservation', netviews.VPNNetworkReservationViewSet, basename='vpnnetreservation')
+router.register(r'v2/net/wireguardvpnsizes', netviews.WireGuardVPNSizes, basename='wireguardvpnnetworksizes')
 
 
 

uncloud_net/migrations/0005_auto_20201220_1837.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.1 on 2020-12-20 18:37
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('uncloud_net', '0004_auto_20201213_1734'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='wireguardvpn',
+            name='wireguard_public_key',
+            field=models.CharField(max_length=48, unique=True),
+        ),
+    ]

uncloud_net/selectors.py

@@ -1,12 +1,7 @@
 from django.db import transaction
 from django.db.models import Count, F
-
-
 from .models import *
 
-# def get_num_used_networks(pool):
-#     return pool.wireguardvpn_set.count()
-
 def get_suitable_pools(subnetwork_mask):
     """
     Find suitable pools for a certain network size.
@@ -44,17 +39,5 @@ def allowed_vpn_network_reservation_size():
 
     # Need to return set of tuples, see
     # https://docs.djangoproject.com/en/3.1/ref/models/fields/#field-choices
-    return set([ (pool.subnetwork_mask, pool.subnetwork_mask) for pool in pools ])
-
-
-#def get_next_vpnnetwork(pool):
-    # get all associated networks
-    # look for the lowest free number
-    # return that
-
-
-    # select last used one
-    # try to increment by one -> get new network
-
-    # if that fails search through the existing vpns for the first unused number
-    #
+#    return set([ (pool.subnetwork_mask, pool.subnetwork_mask) for pool in pools ])
+    return set([pool.subnetwork_mask  for pool in pools ])

uncloud_net/serializers.py

@@ -6,6 +6,8 @@ from rest_framework import serializers
 
 from .models import *
 from .services import *
+from .selectors import *
+
 
 class WireGuardVPNSerializer(serializers.ModelSerializer):
     address = serializers.CharField(read_only=True)
@@ -23,6 +25,14 @@ class WireGuardVPNSerializer(serializers.ModelSerializer):
         }
 
 
+    def validate_network_mask(self, value):
+        msg = _(f"No pool for network size {value}")
+        sizes = allowed_vpn_network_reservation_size()
+
+        if not value in sizes:
+            raise serializers.ValidationError(msg)
+
+
     def validate_wireguard_public_key(self, value):
         msg = _("Supplied key is not a valid wireguard public key")
 
@@ -41,3 +51,12 @@ class WireGuardVPNSerializer(serializers.ModelSerializer):
             raise serializers.ValidationError(msg)
 
         return value
+
+
+class WireGuardVPNSizesSerializer(serializers.Serializer):
+
+    size = serializers.IntegerField(min_value=0, max_value=128)
+
+    # sizes = serializers.ListField(
+    #     child=serializers.IntegerField(min_value=0, max_value=128)
+    # )

uncloud_net/services.py

@@ -7,6 +7,8 @@ from .tasks     import *
 @transaction.atomic
 def create_wireguard_vpn(owner, public_key, network_mask):
 
+
+
     pool = get_suitable_pools(network_mask)[0]
     count = pool.wireguardvpn_set.count()
 

uncloud_net/views.py

@@ -56,3 +56,13 @@ class WireGuardVPNCreateView(LoginRequiredMixin, SuccessMessageMixin, CreateView
     def get_success_message(self, cleaned_data):
         return self.success_message % dict(cleaned_data,
                                            the_prefix = self.object.prefix)
+
+class WireGuardVPNSizes(viewsets.ViewSet):
+    def list(self, request):
+        sizes = allowed_vpn_network_reservation_size()
+        print(sizes)
+
+        sizes = [ { 'size': size } for size in sizes ]
+        print(sizes)
+
+        return Response(WireGuardVPNSizesSerializer(sizes, many=True).data)