backup

#!/bin/bash

source backup.cfg
source zbackup-tar.sh
source zbackup-pgsql.sh

# --- INIT
FULL=false
RESET=false
RELATIVE=false

echo "Initialize backups..."

while getopts "frl" opt; do
    case $opt in
        f)
            echo "--- Switch to full backups"
            FULL=true
            ;;
        r)
            echo "--- Remove incrementals references"
            RESET=true
            ;;
        l)
            echo "--- Save relative paths"
            RELATIVE=true
            ;;
    esac
done
shift $((OPTIND-1))

echo ""

# --- DATAS
for dir in ${DATAS[*]}
do
    basename=${dir##*/}
    slug=data-${basename,,}
    zbackup_tar $dir $slug
done

backup.cfg

CONFIGDIR="$HOME/.zbackup"
TARGET=
TIMESTAMP=`date +%Y%m%d`
HOSTNAME=`hostname -s`

DATAS=(
    ''
)

zbackup-pgsql.sh

function zbackup_pgsql {
    SLUG=$3
    DBNAME=$1
    ROLE=$2
    
    if [ ! -d $TARGET ]; then
        echo ">>> Backup $SLUG error: target is unreachable"
        exit 0
    fi
    
    if [ ! -d "${TARGET}/backups/${HOSTNAME}" ]; then
        echo ">>> Create host backup folder: ${TARGET}/backups/${HOSTNAME}"
        mkdir -p "${TARGET}/backups/${HOSTNAME}"
    fi
    
    CMD="pg_dump -h 127.0.0.1 -U $ROLE $DBNAME | zbackup --silent --password-file ${CONFIGDIR}/password backup ${TARGET}/backups/${HOSTNAME}/${SLUG}-${TIMESTAMP}.sql"
    
    echo ">>> Backup $SLUG PGSQL dump"
    eval "$CMD"
    echo ""
}

zbackup-tar.sh

shopt -s dotglob

function zbackup_tar {
    SLUG=$2
    SRC=$1
    INCREMENTAL=${3-true}

    if $FULL ; then
        INCREMENTAL=false
    fi

    if [ ! -d $TARGET ]; then
        echo ">>> Backup $SLUG error: target is unreachable"
        exit 0
    fi

    if [ ! -d "${TARGET}/backups/${HOSTNAME}" ]; then
        echo ">>> Create host backup folder: ${TARGET}/backups/${HOSTNAME}"
        mkdir -p "${TARGET}/backups/${HOSTNAME}"
    fi

    if $RESET ; then
        rm -f ${CONFIGDIR}/${SLUG}.snapshot
    fi

    TARFILE="${SLUG}-${TIMESTAMP}"
    TAROPTS="--create --preserve-permissions --exclude-from=${CONFIGDIR}/excludes"
    
    if $INCREMENTAL ; then
        TAROPTS="$TAROPTS --listed-incremental=${CONFIGDIR}/${SLUG}.snapshot --no-check-device"
    else
        TARFILE="$TARFILE.full"
    fi
    
    if $RELATIVE ; then
        XFORM=`echo $SRC | cut -c2-`
        TAROPTS="$TAROPTS --xform s:^$XFORM/::"
        TARSRC="$SRC/*"
    else
        TARSRC=$SRC
    fi

    echo ">>> Backup $SLUG"
    #echo "tar $TAROPTS $TARSRC"
    tar $TAROPTS $TARSRC | zbackup --silent --password-file ${CONFIGDIR}/password backup ${TARGET}/backups/${HOSTNAME}/${TARFILE}.tar
    echo ""
}