#!@@GOODSH@@
# -*- sh -*-

: << =cut

=head1 NAME

nfsd4 - Plugin to graph NFSv4 server activity

=head1 CONFIGURATION

No configuration

=head1 AUTHOR

2007/10/28 21:30:00 Christian Kujau <lists@nerdbynature.de>

=head1 LICENSE

GPLv2

=head1 NOTES

[...] based on the nfsd plugin by Alexandre Dupouy
=head1 MAGIC MARKERS

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

=cut

NFSD=/proc/net/rpc/nfsd

proc="access close commit create delegpurge delegreturn getattr getfh link lock \
	lockt locku lookup lookup_root nverify open openattr open_conf open_dgrd \
	putfh putpubfh putrootfh read readdir readlink remove rename renew restorefh \
	savefh secinfo setattr setcltid setcltidconf verify write rellockowner"

if [ "$1" = "autoconf" ]; then
	if [ -f "$NFSD" ]; then
		if grep -q proc4ops "$NFSD"; then
			echo yes
		else
			echo "no (no proc4ops in $NFSD)"
		fi
		exit 0
	else
		echo "no (no $NFSD)"
		exit 0
	fi
fi

if [ ! -f "$NFSD" ] ; then
	echo graph_title no $NFSD
	exit 1
fi

if [ "$1" = "config" ]; then

	echo 'graph_title NFSv4 Server'
	echo 'graph_args --base 1000 -l 0'
	# shellcheck disable=SC2016
	echo 'graph_vlabel requests / ${graph_period}'
	echo 'graph_total total'
	echo 'graph_category NFS'
	for a in $proc ; do echo "$a.label $a" ; echo "$a.type DERIVE"; echo "$a.min 0"; done
	exit 0
fi

i=6;

for a in $proc; do
	echo -n "$a.value "
	grep proc4ops $NFSD \
		| cut -f $i -d ' ' \
		| awk '{print $1}'
	i=$((i + 1))
done
