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#!/usr/bin/env bash
set -euo pipefail
# Upstream (Arch Geo CDN points to a Tier-1 close to you)
UPSTREAM="https://geo.mirror.pkgbuild.com/lastsync"
# Your mirror (the VIP that Arch probes)
MIRROR="https://stygian.failzero.net/mirror/archlinux/lastsync"
# Log file
LOGFILE="/var/log/mirrors/delay.log"
mkdir -p "$(dirname "$LOGFILE")"
# Fetch timestamps (seconds since epoch)
u=$(curl -fsS "$UPSTREAM" || echo 0)
m=$(curl -fsS "$MIRROR" || echo 0)
if [[ "$u" =~ ^[0-9]+$ && "$m" =~ ^[0-9]+$ ]]; then
delay_min=$(( (u - m) / 60 ))
echo "$(date -Is) upstream=$u mirror=$m delay=${delay_min}m" >> "$LOGFILE"
else
echo "$(date -Is) error fetching lastsync" >> "$LOGFILE"
curl -fsS https://geo.mirror.pkgbuild.com/lastsync > "$LIVE/lastsync" \
|| date -u +%s > "$LIVE/lastsync"
fi
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