vmount.in

#!/bin/sh
#
# Volume manager CLI client
# version 0.7

set -e

if [ -r %%PREFIX%%/etc/volman.conf ]; then
        . %%PREFIX%%/etc/volman.conf
fi

: ${WRKDIR:=/tmp/volman}

i=0
while [ ! -e ${WRKDIR}/fifo.vmount -a ${i} -lt 3 ]; do
	i=$((${i}+1))
	echo "vmount SUBSCRIBE" >${WRKDIR}/fifo.volmand
	sleep 0.5
done

echo "vmount VOLUMES" >${WRKDIR}/fifo.volmand
if [ ${#} -eq 1 ]; then
	DOMOUNT="${1}"
fi

while read RESP DATA <&3; do
	case "${RESP}" in
	VOLUME)
		set -- ${DATA}
		if [ "${1}" = "LIST" ]; then
			case "${2}" in
			m)
				out="[m]"
				if [ "${DOMOUNT}" = "${3}" ]; then
					echo -n "umounting ${3}... "
					echo "vmount UMOUNT ${3}" >${WRKDIR}/fifo.volmand
				fi
				;;
			u)
				out="[u]"
				if [ "${DOMOUNT}" = "${3}" ]; then
					echo -n "mounting ${3}... "
					echo "vmount MOUNT ${3}" >${WRKDIR}/fifo.volmand
				fi
				;;
			END)
				if [ -n "${DOMOUNT}" ]; then
					continue
				else
					break
				fi
				;;
			esac
			if [ -z "${DOMOUNT}" ]; then
				size=${5}
				unit=B
				while [ ${size} -gt 1000 ]; do
					size=$((${size} / 1000))
					case "${unit}" in
					B) unit=KB ;;
					KB) unit=MB ;;
					MB) unit=GB ;;
					GB) unit=TB ;;
					TB) unit=PB ;;
					esac
				done
				out="${out} ${3} ${4} ${size}${unit}"
				if [ ${#} -gt 5 ]; then
					shift 5
					out="${out} ${*}"
				fi
				echo ${out}
			fi
		fi
		;;
	ERROR)
		echo ERROR: ${DATA}
		break
		;;
	MOUNT)
		set -- ${DATA}
		if [ "${1}" = "${DOMOUNT}" ]; then
			shift
			echo success: ${*}
		fi
		break
		;;
	UMOUNT)
		set -- ${DATA}
		if [ "${1}" = "${DOMOUNT}" ]; then
			shift
			echo success
		fi
		break
		;;
	PING)
		echo "vmount PONG" >${WRKDIR}/fifo.volmand
		;;
	esac
done 3<${WRKDIR}/fifo.vmount