#!/bin/bash
#
# WizBackup Driver 1.0
# Copyleft 2011 Bernie Innocenti <bernie@codewiz.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License,
# or (at your option) any later version.

if [ $# -lt 1 ]
then
	echo "Usage: $0 [MACHINE-TAB]"
	echo
	echo "The MACHINE-TAB file contains hostnames of machines to be backed up, one per line."
	echo "Empty lines and lines starting with '#' are ignored."
	exit 1
fi

HOSTS=`cat $1 | egrep -v '^#|^ *$'`

LOGGROUP=`basename $1`
LOGDIR=/var/log/wizbackup
LOCKDIR=/var/lock/wizbackup
EXCLUDES_DIR=/root/rsync-backups/exclude
DEST=/backup

today=`date +"%Y%m%d"`
mkdir -p $LOGDIR
mkdir -p $LOCKDIR

if [ "`tty`" = "not a tty" ]; then
	OUTLOGFILE="$LOGDIR/$LOGGROUP-$today.log"
else
	LOGFILE=/dev/stdout
fi

for host in $HOSTS; do
	opts="--exclude-from $EXCLUDES_DIR/ALWAYS"
	if [ -f "$EXCLUDES_DIR/$host" ]; then
		opts="$opts --exclude-from $EXCLUDES_DIR/$host"
	fi

	start_time=$(date +%s)
	flock $LOCKDIR/$host wizbackup "$host:/" "$DEST/$host/" $opts >>$LOGFILE 2>&1
	result=$?
	end_time=$(date +%s)

	report="$(date):$host:$(($end_time-$start_time)):$result"
	echo $report >>$LOGDIR/$LOGGROUP-report-$today.log
	[ $result != 0 ] && echo "$report" >>$LOGDIR/$LOGGROUP-fail-$today.log
done

# TODO: send fail log email report
# TODO: delete logs older than 45 days