From e0ac71fd9e45a25180ac4a6efaa926559867b3db Mon Sep 17 00:00:00 2001
From: Matthias Wirth <matthias.wirth@gmail.com>
Date: Sat, 3 Aug 2024 20:19:14 +0200
Subject: [PATCH] readsb: avoid restarts which are too fast

start instantly on first start though
---
 rootfs/etc/s6-overlay/scripts/readsb | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/rootfs/etc/s6-overlay/scripts/readsb b/rootfs/etc/s6-overlay/scripts/readsb
index 95eef4e..f829e13 100755
--- a/rootfs/etc/s6-overlay/scripts/readsb
+++ b/rootfs/etc/s6-overlay/scripts/readsb
@@ -364,6 +364,12 @@ if chk_enabled "$PROMETHEUS_ENABLE"; then
     READSB_CMD+=("--write-prom=/run/readsb-prometheus.prom")
 fi
 
+# wait 15 seconds if this is not the first startup
+if [[ $(s6-svdt /run/service/readsb | wc -l) != 0 ]]; then
+    "${s6wrap[@]}" --args echo "delaying restart by 15 seconds"
+    sleep 15
+fi
+
 # shellcheck disable=SC2086
 if [[ "${LOGLEVEL,,}" == "verbose" ]]; then
     exec "${s6wrap[@]}" --args "${READSB_BIN}" "${READSB_CMD[@]}" $READSB_AUTOMATION_ARGS $READSB_EXTRA_ARGS