#!/bin/sh
# 9router-watchdog.sh — local health monitor + auto-restart.
#
# Runs from cron (e.g. every minute). Checks the 9router API endpoint;
# if it does NOT respond with HTTP 200, the service is (re)started via
# start-9router.sh.
#
# Uses absolute paths because cron has a minimal PATH.
# Run as root (so it can drop privileges via runuser inside start-9router.sh).

CURL=/usr/bin/curl
WRAPPER=/usr/local/bin/start-9router.sh
URL=http://127.0.0.1:20128/v1/models
LOG=/home/ardhi/9router.log

# If the wrapper is missing, nothing we can do.
[ -x "$WRAPPER" ] || exit 0

# Probe the API. -f makes curl exit non-zero on HTTP >= 400.
if "$CURL" -fs -m 5 -o /dev/null "$URL" 2>/dev/null; then
  # Healthy — nothing to do.
  exit 0
fi

# Unhealthy (no response / non-200) → restart.
echo "[$(date '+%Y-%m-%d %H:%M:%S')] watchdog: 9router not healthy, restarting" >> "$LOG" 2>/dev/null
"$WRAPPER"
exit 0