Add default subnet pool creation on login

circle/circle/settings/base.py

@@ -572,3 +572,8 @@ POLICY_DIRS = {
 DEFAULT_USERNET_VLAN_NAME = (
     get_env_variable("DEFAULT_USERNET_VLAN_NAME", "usernet"))
 USERNET_MAX = 2 ** 12
+
+DEFAULT_SUBNETPOOL_NAME_FOR_USER = "default"
+DEFAULT_SUBNETPOOL_PREFIXES = (
+    "10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16"
+)
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circle/network/models.py

@@ -15,6 +15,8 @@
 # You should have received a copy of the GNU General Public License along
 # with CIRCLE.  If not, see <http://www.gnu.org/licenses/>.
 import openstack_api
+from django.conf import settings
+from django.contrib.auth import user_logged_in
 from django.db import models
 from django.core.validators import MinValueValidator, MaxValueValidator
 from django.core.urlresolvers import reverse
@@ -77,3 +79,15 @@ class Vxlan(models.Model):
 
     def get_absolute_url(self):
         return reverse('network.vxlan', kwargs={'vni': self.vni})
+
+def create_subnet_pool(sender, user, request, **kwargs):
+    subnet_pools = openstack_api.neutron.subnetpool_list(request)
+    subnet_pools = [sp for sp in subnet_pools if sp.name == settings.DEFAULT_SUBNETPOOL_NAME_FOR_USER]
+    if(len(subnet_pools) == 0):
+        openstack_api.neutron.subnetpool_create(
+            request,
+            settings.DEFAULT_SUBNETPOOL_NAME_FOR_USER,
+            settings.DEFAULT_SUBNETPOOL_PREFIXES,
+        )
+
+user_logged_in.connect(create_subnet_pool)
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