docker-minecraft-server/files/auto/autostop-daemon.sh
2023-06-30 09:50:30 -05:00

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#!/bin/bash
# needed for the clients connected function residing in autopause
. /auto/autopause-fcns.sh
# shellcheck source=../../scripts/start-utils
. "${SCRIPTS:-/}start-utils"
if isTrue "${DEBUG_AUTOSTOP}"; then
set -x
fi
# wait for java process to be started
while :
do
if java_process_exists ; then
break
fi
sleep 0.1
done
STATE=INIT
while :
do
isTrue "${DEBUG_AUTOSTOP}" && log "DEBUG: autostop state = $STATE"
case X$STATE in
XINIT)
# Server startup
if mc_server_listening ; then
TIME_THRESH=$(($(current_uptime)+AUTOSTOP_TIMEOUT_INIT))
if [ -e /data/.skip-stop ] ; then
logAutostop "'/data/.skip-stop' file is present - skipping stopping"
else
logAutostop "MC Server listening for connections - stopping in $AUTOSTOP_TIMEOUT_INIT seconds"
fi
STATE=II
fi
;;
XII)
# Initial idle
if java_clients_connected ; then
logAutostop "Client connected - waiting for disconnect"
STATE=E
elif [ -e /data/.skip-stop ] ; then
logAutostop "'/data/.skip-stop' file is present - skipping stopping"
STATE=E
else
if [[ $(current_uptime) -ge $TIME_THRESH ]] ; then
logAutostop "No client connected since startup - stopping server"
/auto/stop.sh
exit 0
fi
fi
;;
XE)
# Established
if ! java_clients_connected ; then
TIME_THRESH=$(($(current_uptime)+$AUTOSTOP_TIMEOUT_EST))
logAutostop "All clients disconnected - stopping in $AUTOSTOP_TIMEOUT_EST seconds"
STATE=I
fi
;;
XI)
# Idle
if java_clients_connected ; then
logAutostop "Client reconnected - waiting for disconnect"
STATE=E
elif [ -e /data/.skip-stop ] ; then
TIME_THRESH=$(($(current_uptime)+$AUTOSTOP_TIMEOUT_EST))
logAutostop "'/data/.skip-stop' file is present - skipping stopping"
STATE=E
else
if [[ $(current_uptime) -ge $TIME_THRESH ]] ; then
logAutostop "No client reconnected - stopping"
/auto/stop.sh
exit 0
fi
fi
;;
*)
logAutostop "Error: invalid state: $STATE"
;;
esac
sleep $AUTOSTOP_PERIOD
done