#!/bin/bash

#    IngRRD (https://forge.riquer.fr/p/ingrrd/)
#    Copyright (C) 2014-2015  Vincent Riquer
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as
#    published by the Free Software Foundation, either version 3 of the
#    License, or (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.

readlast() {
	local			\
		index		\
		indices		\
		lastupdatelines	\
		time		\
		values		\

	readarray -t lastupdatelines < <(
		rrdtool lastupdate $rrdfile
	)
	indices=( ${lastupdatelines[0]} )
	time=${lastupdatelines[2]%:*}
	last["time"]=${time:-0}
	values=( ${lastupdatelines[2]#*:} )
	for index in ${!indices[@]}
	do
		last["${indices[index]}"]=${values[index]}
	done
}