Retrieve IPv6 addresses from VMs

This commit allows the model to fetch IPv6 addresses from running VMs
and populate VirtualMachine objects with the value if it was retrieved
successfully

capsulflask/spoke_model.py

@@ -114,24 +114,30 @@ class ShellScriptSpoke(VirtualizationInterface):
     if len(fields) < 3:
       return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], state=state)
 
-    ipaddr = fields[2]
+    ip4addr = fields[2]
 
-    if not re.match(r"^([0-9]{1,3}\.){3}[0-9]{1,3}$", ipaddr):
+    if not re.match(r"^([0-9]{1,3}\.){3}[0-9]{1,3}$", ip4addr):
       return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], state=state)
 
     if get_ssh_host_keys:
       try:
-        completedProcess2 = run([join(current_app.root_path, 'shell_scripts/ssh-keyscan.sh'), ipaddr], capture_output=True)
+        completedProcess2 = run([join(current_app.root_path, 'shell_scripts/ssh-keyscan.sh'), ip4addr], capture_output=True)
         self.validate_completed_process(completedProcess2)
         ssh_host_keys = json.loads(completedProcess2.stdout.decode("utf-8"))
-        return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], state=state, ipv4=ipaddr, ssh_host_keys=ssh_host_keys)
+        return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], state=state, ipv4=ip4addr, ssh_host_keys=ssh_host_keys)
       except:
         current_app.logger.warning(f"""
-          failed to ssh-keyscan {id} at {ipaddr}:
+          failed to ssh-keyscan {id} at {ip4addr}:
           {my_exec_info_message(sys.exc_info())}"""
         )
 
-    return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], state=state, ipv4=ipaddr)
+    if len(fields) < 4:
+        return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], state=state, ipv4=ip4addr)
+
+    ip6addr = fields[3]
+
+    return VirtualMachine(id, current_app.config["SPOKE_HOST_ID"], state=state, ipv4=ip4addr, ipv6=ip6addr)
+
 
   def list_ids(self) -> list:
     completedProcess = run([join(current_app.root_path, 'shell_scripts/list-ids.sh')], capture_output=True)