phasing in celery

for configuring the vpn server

uncloud_net/tasks.py

@@ -0,0 +1,66 @@
+from celery import shared_task
+from .models import *
+
+@shared_task
+def configure_wireguard_server(vpnpool):
+    print(f"Configuring {vpnpool.vpn_server_hostname}")
+
+    wireguard_config_filename =  '/etc/wireguard/{}.conf'.format(vpnpool.network)
+
+    @property
+    def wireguard_config(self):
+        wireguard_config = [
+            """
+[Interface]
+ListenPort = 51820
+PrivateKey = {privatekey}
+""".format(privatekey=self.wireguard_private_key) ]
+
+        peers = []
+
+        for reservation in self.vpnnetworkreservation_set.filter(status='used'):
+            public_key = reservation.vpnnetwork_set.first().wireguard_public_key
+            peer_network = "{}/{}".format(reservation.address, self.subnetwork_size)
+            owner = reservation.vpnnetwork_set.first().owner
+
+            peers.append("""
+# Owner: {owner}
+[Peer]
+PublicKey = {public_key}
+AllowedIPs = {peer_network}
+""".format(
+    owner=owner,
+    public_key=public_key,
+    peer_network=peer_network))
+
+        wireguard_config.extend(peers)
+
+        return "\n".join(wireguard_config)
+
+
+    def configure_wireguard_vpnserver(self):
+        """
+        This method is designed to run as a celery task and should
+        not be called directly from the web
+        """
+
+        # subprocess, ssh
+
+        pass
+
+
+
+    def num_maximum_networks(self):
+        """
+        sample:
+        network_size = 40
+        subnetwork_size = 48
+        maximum_networks = 2^(48-40)
+
+        2nd sample:
+        network_size = 8
+        subnetwork_size = 24
+        maximum_networks = 2^(24-8)
+        """
+
+        return 2**(self.subnetwork_mask - self.network_mask)