nixos/server/mods/sysd.nix
2026-09-26 22:11:24 +09:00

62 lines
1.8 KiB
Nix

{ config, lib, pkgs, ... }:
{
systemd = {
timers = {
tgbot-send = {
wantedBy = [ "timers.target" ];
timerConfig = {
OnCalendar = "*-*-01 16:00:00";
Persistent = true;
};
};
network-watchdog = {
wantedBy = [ "timers.target" ];
timerConfig = {
OnBootSec = 30;
AccuracySec = 1;
OnUnitActiveSec = 10;
};
};
};
services = {
tgbot-send = {
serviceConfig.Type = "oneshot";
script = ''
. /secrets/tgbot.env
for msg in "''${MESSAGES[@]}"; do
TEXT="''${msg#*:}"
CHAT_ID="''${msg%%:*}"
${pkgs.curl}/bin/curl -X POST "https://api.telegram.org/$BOT/sendMessage" \
-d "chat_id=$CHAT_ID" -d "text=$TEXT" 2> /dev/null | ${pkgs.jq}/bin/jq
sleep 1
done
'';
};
network-watchdog = {
serviceConfig = {
Type = "oneshot";
LogLevelMax = "notice";
};
script = ''
if [ ! -e /run/network.failures ] || [ ! -e /run/network.limit ] || \
${pkgs.curl}/bin/curl --head --max-time 3 https://www.google.com; then
limit=3
failures=0
else
limit=$(cat /run/network.limit)
failures=$((1+$(cat /run/network.failures)))
[ $failures -gt 1 ] && echo "<5>failures = $failures"
fi
if [ $failures -ge $limit ]; then
echo "<4>restarting NetworkManager"
systemctl restart NetworkManager.service
[ $limit -lt 60 ] && limit=$((4*$limit/3))
failures=0
fi
echo $limit > /run/network.limit
echo $failures > /run/network.failures
'';
};
};
};
}