From d1d48610d9cc9f8b18df0b2c589367ad702987d1 Mon Sep 17 00:00:00 2001
From: Philipp Neumann <pn@flyingcircus.io>
Date: Thu, 29 Aug 2024 16:43:06 +0200
Subject: [PATCH] varnish: add migration for moving stateDir

PL-132901
---
 nixos/services/varnish/default.nix | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/nixos/services/varnish/default.nix b/nixos/services/varnish/default.nix
index 4b4b12153..1bf7fe305 100644
--- a/nixos/services/varnish/default.nix
+++ b/nixos/services/varnish/default.nix
@@ -126,7 +126,12 @@ in {
       reloadIfChanged = true;
       restartTriggers = [ cfg.extraCommandLine vcfg.package cfg.http_address ];
       reload = ''
-        vadm="${vcfg.package}/bin/varnishadm -n ${vcfg.stateDir}"
+        if [ -d "${vcfg.stateDir}" ]; then
+          statedir="${vcfg.stateDir}" 
+        else
+          statedir="/var/spool/varnish/${config.networking.hostName}" #temporary migration
+        fi
+        vadm="${vcfg.package}/bin/varnishadm -n $statedir"
         cat ${commandsfile} | $vadm
 
         coldvcls=$($vadm vcl.list | grep " cold " | ${pkgs.gawk}/bin/awk {'print $5'})