#!/bin/bash

BACKUP_ROOT="/opt/backup"
BACKUP_DIR="${BACKUP_ROOT}/app"
LOCKFILE="${BACKUP_ROOT}/`basename ${0}`.lock"
BACKUP_KEEP_DAYS="30"

NOW=$(date +"%Y-%m-%d-%H%M%S")

if [ -f "${LOCKFILE}" ]; then
	echo "Backup is already running, exitting..." >&2
	exit 1
fi
touch "${LOCKFILE}"

tar cpfz "${BACKUP_DIR}/backup_app.${NOW}.tgz" /opt/tomcat/current/webapps/* 2>/dev/null || echo "Error when performing backup." >&2
find "$BACKUP_DIR" -name "*tgz" -type f -mtime "+${BACKUP_KEEP_DAYS}" -delete
rm "${LOCKFILE}"
exit 0