#!/bin/sh
#
# Shows status of 3ware RAID controllers: twa(4), twe(4)
#
# Authors: Bjoern A. Zeeb, Dmitry Frolov

# If there is a global system configuration file, suck it in.
#
if [ -r /etc/defaults/periodic.conf ]
then
    . /etc/defaults/periodic.conf
    source_periodic_confs
fi

# Defaults.
: ${daily_status_3ware_raid_enable:=NO}
# Alarms persist between "tw_cli alarms" invocation?
# Set to YES for twa(4) and to NO for twe(4).
: ${daily_status_3ware_raid_persist_alarms:=YES}

tw_cli=${tw_cli:-%%PREFIX%%/sbin/tw_cli}
logdir=${logdir:-/var/log}

case "$daily_status_3ware_raid_enable" in
    [Yy][Ee][Ss])
	echo
	echo 'Checking status of 3ware RAID controllers:'

	rc=0

	# Checking each controller.
	for ctrl in `${tw_cli} info | awk '/^c/ { print $1 }'`
	     do
	     	echo ""
		echo "Controller ${ctrl}:"
		ctrl_log=${logdir}/3ware_raid_${ctrl}
		if test ! -f ${ctrl_log}.today; then
			touch ${ctrl_log}.today
		fi
		mv -f ${ctrl_log}.today ${ctrl_log}.yesterday
		${tw_cli} info ${ctrl} > ${ctrl_log}.today
		lines=`wc -l ${ctrl_log}.today | awk '{ print $1 }'`
		diff -U $lines ${ctrl_log}.yesterday ${ctrl_log}.today
		raid_rc=$?
		if test $raid_rc -eq 0; then
			cat  ${ctrl_log}.today
		fi
		[ $rc -eq 0 ] && [ $raid_rc -ne 0 ] && rc=3
	     done

	# Checking alarms.
	echo "Alarms (most recent first):"
	alarms_log=${logdir}/3ware_raid_alarms
	case "$daily_status_3ware_raid_persist_alarms" in
	[Yy][Ee][Ss])
		if test ! -f ${alarms_log}.today; then
			touch ${alarms_log}.today
		fi
		mv -f ${alarms_log}.today ${alarms_log}.yesterday
		${tw_cli} alarms > ${alarms_log}.today
		cmp -zs ${alarms_log}.yesterday ${alarms_log}.today
		raid_rc=$?
		if test $raid_rc -ne 0; then
			diff -u ${alarms_log}.yesterday ${alarms_log}.today | \
				grep -v '^-\|^$'
		fi
		;;
	*)
		raid_rc=0
		${tw_cli} alarms > ${alarms_log}.today
		lines=`wc -l ${alarms_log}.today | awk '{ print $1 }'`
		if test $lines -gt 4; then
			cat ${alarms_log}.today
			raid_rc=1
		fi
		;;
	esac
	if test $raid_rc -eq 0; then
		echo "  No new alarms."
	fi
	[ $rc -eq 0 ] && [ $raid_rc -ne 0 ] && rc=3
	;;

    *)  rc=0;;
esac

exit $rc

# end
