#!/bin/sh
#
# Wildcard-plugin to monitor network interfaces. To monitor an
# interface, link if_<interface> to this file. E.g.
#
#    ln -s /usr/share/munin/plugins/if_ /etc/munin/node.d/if_eth0
#
# ...will monitor eth0.
#
# Any device found in /usr/bin/kstat can be monitored.
#
# $Log$
# Revision 1.5  2004/12/10 10:47:50  jimmyo
# Change name from ${scale} to ${graph_period}, to be more consistent.
#
# Revision 1.4  2004/12/09 22:12:56  jimmyo
# Added "graph_period" option, to make "graph_sums" usable.
#
# Revision 1.3  2004/05/20 19:02:38  jimmyo
# Set categories on a bunch of plugins
#
# Revision 1.2  2004/04/30 16:43:00  jimmyo
# Cleaned up Solaris plugins.
#
# Revision 1.1  2004/01/02 18:50:01  jimmyo
# Renamed occurrances of lrrd -> munin
#
# Revision 1.1.1.1  2004/01/02 15:18:07  jimmyo
# Import of LRRD CVS tree after renaming to Munin
#
# Revision 1.3  2003/11/07 22:12:51  jimmyo
# Changed deprecated plugin options
#
# Revision 1.2  2003/11/07 17:43:16  jimmyo
# Cleanups and log entries
#
#
#
# Magic markers (optional - used by munin-config and some installation
# scripts):
#
#%# family=auto
#%# capabilities=autoconf suggest


INTERFACE=`basename $0 | sed 's/^if_//g'`

if [ "$1" = "autoconf" ]; then
	if [ -x /usr/bin/kstat ]; then
		echo yes
		exit 0
	else
		echo "no (/usr/bin/kstat not found)"
		exit 1
	fi
fi

if [ "$1" = "suggest" ]; then
	if [ -x /usr/bin/kstat ]; then
		kstat -p -s '/^rbytes$/' | awk -F: '{ print $3 }'
		exit 0
	else
		exit 1
	fi
fi

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

	echo "graph_order rbytes obytes" 
	echo "graph_title $INTERFACE traffic"
	echo 'graph_args --base 1000'
	echo 'graph_vlabel bits per ${graph_period} in (-) / out (+)'
	echo 'graph_category network'
	echo 'rbytes.label received'
        echo 'rbytes.type COUNTER'
        echo 'rbytes.max 2000000000'
        echo 'rbytes.graph no'
        echo 'rbytes.cdef rbytes,8,*'
        echo 'obytes.label bps'
	echo 'obytes.type COUNTER'
	echo 'obytes.negative rbytes'
	echo 'obytes.cdef obytes,8,*'
        echo 'obytes.max 2000000000'
	exit 0
fi;

kstat -p -n $INTERFACE -s '/^[ro]bytes$/' | awk -F: '
{
	split($4, four, "\t")
	print four[1] ".value", four[2]
}'