Add /ping/ API route to check if user's token is valid

apiserver/apiserver/api/views.py

@@ -250,6 +250,14 @@ class UserView(views.APIView):
         return Response(serializer.data)
 
 
+class PingView(views.APIView):
+    permission_classes = [AllowMetadata | IsAuthenticated]
+
+    def post(self, request):
+        return Response(200)
+
+
+
 class DoorViewSet(viewsets.ViewSet, List):
     def list(self, request):
         cards = models.Card.objects.filter(active_status='card_active')

apiserver/apiserver/urls.py

@@ -29,5 +29,6 @@ urlpatterns = [
     url(r'^registration/', views.RegistrationView.as_view(), name='rest_name_register'),
     url(r'^password/change/', views.PasswordChangeView.as_view(), name='rest_password_change'),
     url(r'^user/', views.UserView.as_view(), name='user'),
+    url(r'^ping/', views.PingView.as_view(), name='ping'),
     url(IPN_ROUTE, views.IpnView.as_view(), name='ipn'),
 ]