#!/usr/bin/env bash
# -*- sh -*-

: << =cut

=head1 NAME

nfsd - Plugin to monitor NFSv3 client cache activity on FreeBSD

=head1 CONFIGURATION

No configuration

=head1 AUTHORS

Plugin created by Adam Michel, based on work by Alexandre Dupouy, with the assistance of Mike Fedyk

=head1 LICENSE

GPLv2

=head1 MAGIC MARKERS

 #%# family=auto
 #%# capabilities=autoconf

=cut

NFSSTAT=/usr/bin/nfsstat
if [ "$1" = "autoconf" ]; then
    if [ -x "$NFSSTAT" ]; then
        echo yes
        exit 0
    else
        echo "no (no $NFSSTAT)"
        exit 0
    fi
fi

labels=`$NFSSTAT -c | grep -iv "[0-9]" | tail -n 2 | sed 's/BioRLHits/BioRL\ Hits/g' | awk '{print $1"_"$2,$1"_"$3,$4"_"$5,$4"_"$6,$7"_"$8,$7"_"$9,$10"_"$11,$10"_"$12}' | tr '\n' ' ' | tr '[A-Z]' '[a-z]'`
values=`$NFSSTAT -c | grep -i "[0-9]" | tail -n 2 | tr '\n' ' '`

larray=( $labels )
varray=( $values )
if [ "$1" = "config" ]; then

    echo 'graph_title NFSv3 Client Cache'
    echo 'graph_args --base 1000 -l 0'
    echo 'graph_vlabel requests / ${graph_period}'
    echo 'graph_total total'
    echo 'graph_category fs'
    for a in $labels; do echo "$a.label $a" ; echo "$a.type DERIVE"; echo "$a.min 0"; done
    exit 0
fi

for i in {0..15}; do
    label=${larray[$i]}
    value=${varray[$i]}
    echo "$label.value $value"
done