From 2a8c056a3bdf5879c191e13114045616bfe57912 Mon Sep 17 00:00:00 2001
From: yuvipanda <yuvipanda@gmail.com>
Date: Thu, 9 May 2019 13:13:04 -0700
Subject: [PATCH] Run hub db migrations if needed before starting hub

---
 tljh/systemd-units/jupyterhub.service | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tljh/systemd-units/jupyterhub.service b/tljh/systemd-units/jupyterhub.service
index e766e20..6412a81 100644
--- a/tljh/systemd-units/jupyterhub.service
+++ b/tljh/systemd-units/jupyterhub.service
@@ -17,6 +17,9 @@ PrivateDevices=yes
 ProtectKernelTunables=yes
 ProtectKernelModules=yes
 Environment=TLJH_INSTALL_PREFIX={install_prefix}
+# Run upgrade-db before starting, in case Hub version has changed
+# This is a no-op when no db exists or no upgrades are needed
+ExecStartPre={python_interpreter_path} -m jupyterhub.app -f {jupyterhub_config_path} upgrade-db
 ExecStart={python_interpreter_path} -m jupyterhub.app -f {jupyterhub_config_path}
 
 [Install]