#!/bin/sh
# ZFS ARC statistics for FreeBSD
# Author alex@trull.org:
#
#%# family=auto
#%# capabilities=autoconf

sysctl='/sbin/sysctl'

case $1 in
    config)
	cat <<EOF
graph_title ZFS ARC Counters
graph_vlabel per second
graph_scale no
graph_category fs
graph_args -l 0
graph_info FreeBSD ZFS ARC Utilisation - Counters
EOF
$sysctl kstat.zfs.misc.arcstats.hits kstat.zfs.misc.arcstats | awk '/hits/ || /miss/ || /hash/ || /deleted/ || /evict/ { { FS = "[.:]" } { displayname = $5; gsub("_"," ",displayname) } {print $5".label "displayname"\n"$5".type DERIVE\n"$5".min 0"} }' | grep -v "^\."
	exit 0
	;;
    autoconf)
	if [ ! -x ${sysctl} ]; then
	    echo "no (${sysctl} is not executable)"
	    exit 1
	fi
	ostype=`uname -s`
	if [ ${ostype} = "FreeBSD" ]; then
	    echo "yes"
	    exit 0
	fi
	echo "no (You're OS is not supported by this plugin)"
	exit 1
	;;
    suggest)
	exit 0
	;;
esac

$sysctl kstat.zfs.misc.arcstats.hits kstat.zfs.misc.arcstats |  awk '/hits/ || /miss/ || /hash/ || /deleted/ || /evict/ { { FS = "[.:]" } { displayname = $5; gsub("_"," ",displayname) } {print $5".value",$NF} }' | grep -v "^\."