#!/bin/bash

# THIS IS A DRAFT
# http://refspecs.linux-foundation.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html

[[ -z $2 ]] && echo "${0##*/} <path/to/xen-guest-config> <start|monitor|stop>" && exit 1

conf=$1
action=$2

[[ ! -f $conf ]] && echo could not find $conf && exit 1

guest=`grep ^name $conf | cut -f2 -d'"'`

if [[ $action = start ]]; then
	xl list $guest >/dev/null 2>&1 && exit 0
	xl create $conf && echo started
elif [[ $action = monitor ]]; then
	xl list $guest >/dev/null 2>&1 && echo OK
elif [[ $action = stop ]]; then
	xl list $guest >/dev/null 2>&1 || exit 0
	xl shutdown $guest
	(( maxsec = 25 ))
        (( sec = 0 ))
        while true; do
                sleep 1
                xl list $guest >/dev/null 2>&1 && echo $guest is still up || exit 0
                (( sec++ ))
                (( sec > maxsec )) && echo failed to shut down $guest after $maxsec seconds && exit 1
        done
else
	echo "${0##*/} <path/to/xen-guest-config> <start|monitor|stop>"
	exit 1
fi