backup

#!/bin/bash

#add bashlibraries by fsteltenkamp: https://git.steltenkamp.net/fsteltenkamp/bashLibraries
export LOGLEVEL=0
export LOGFILENAME="backup.log"
export BASEDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
export CONFIGFILE="config.json"
export CONFIGPATH="${BASEDIR}/.config/${CONFIGFILE}"
export RESTARTLOC
export DEBUG=true
RESTARTLOC=$(readlink -f "$0")

#libraries stuff
if [ ! -d ".libs" ]; then
    mkdir ".libs"
fi

if [ ! -f ".libs/downloaders.sh" ]; then
    wget -qO ".libs/downloaders.sh" https://git.steltenkamp.net/fsteltenkamp/bashLibraries/raw/branch/master/downloaders.sh
    # shellcheck disable=SC1091
    source ".libs/downloaders.sh"
else
    # shellcheck disable=SC1091
    source ".libs/downloaders.sh"
fi

#libraries
getLib "output" "input"

servername=myservername
workdir=/srv/minecraft
serverdir=$workdir/$servername
worldpath=$serverdir/world
backupdir=$workdir/backups/$servername
archivedir=$workdir/backup_archive/$servername

log "debug" "starting backup for $servername"
log "debug" "sending commands to server..."
$serverdir/rcon save-all
$serverdir/rcon "say starting backup"

START=$SECONDS
backupfile=$backupdir/$(date +"%y-%m-%d_%H%m")_world.tar.gz

log "debug" "creating backup file $backupfile"
tar -czf $backupfile $worldpath

duration=$((SECONDS - START))
size=$(du -sh $backupfile)

log "success" "backup finished. saved $size in $duration."

#remove yesterday's backups after 11pm, only keep the last backup after 23:00
if [ "$(date +%H)" -ge 23 ]; then
    #make sure the archive exists:
    mkdir -p $archivedir
    log "debug" "backup is running after 23h, cleaning up..." "cleanup"
    #move yesterday's last backup to ./archive
    yesterday_backupfile=$backupdir/$(date -d "yesterday" +"%y-%m-%d")_23*
    log "debug" "moving last backup from yesterday to archive: $yesterday_backupfile:" "cleanup"
    ls $yesterday_backupfile
    mv $yesterday_backupfile $archivedir/
    #delete all other backups from yesterday
    yesterday_backupfiles=$backupdir/$(date -d "yesterday" +"%y-%m-%d")*
    log "debug" "removing all other old backups from yesterday:" "cleanup"
    ls $yesterday_backupfiles
    rm -f $yesterday_backupfiles
fi

log "debug" "sending commands to server..."
$serverdir/rcon "say backup finished."