#!/bin/sh
# -*- sh -*-
#
# This plugin is based on the if_ plugin.
#
# Parameters
#     None
#
# Magic markers (optional - used by munin-config and some installation
# scripts):
#
#%# family=manual
#%# capabilities=autoconf suggest


DEVICE=${0##*/tc_}

mytc() {
	tc -s class show dev $1 | tr "\n" "|" | sed "s/ \+/ /g" | sed "s/ |/|/g" | sed "s/| /|/g" | sed "s/||/\n/g" | sed "s/|/ /g" | tr ":" "_" | sort -n
}

case $1 in
    autoconf)
	if [ -r /proc/net/dev ]; then
	    echo yes
	    exit 0
	else
	    echo "no (/proc/net/dev not found)"
	    exit 1
	fi
	;;
    suggest)
	if [ -r /proc/net/dev ]; then
	    awk '
                /^ *(eth|tap|bond|wlan|ath|ra|sw)[0-9]+:/ {
                   split($0, a, /: */);
                   gsub(/^ +/,"",a[1]);
                   if (($2 > 0) || ($10 > 0)) print a[1]; }' /proc/net/dev

# 	    egrep '^ *(eth|tap|bond|wlan|ath|ra|sw)[0-9]+:' /proc/net/dev | cut -f1 -d: | sed 's/ //g'
	fi
	exit 0
	;;
    config)
		       
	echo "graph_order `mytc $DEVICE | awk '{ print $2 "_" $3 }' | sort -n | tr "\n" " "`"
	echo "graph_title $DEVICE TC traffic"
        echo 'graph_args --base 1000'
        echo 'graph_vlabel bits per ${graph_period}'
	echo 'graph_category network'
	echo "graph_info This graph shows the TC classes traffic of the $DEVICE network interface. Please note that the traffic is shown in bits per second, not bytes."
	
	mytc $DEVICE | tr "_" " " | awk '{ print $2 "_" $3 "_" $4 ".label " $2 "/" $3 ":" $4 "\n" $2 "_" $3 "_" $4 ".type COUNTER\n" $2 "_" $3 "_" $4 ".min 0\n" $2 "_" $3 "_" $4 ".cdef " $2 "_" $3 "_" $4 ",8,*" }'
        exit 0
	;;
esac

# the root(s)
mytc $DEVICE | grep -v " parent " | awk "{ print \$2 \"_\" \$3 \".value \" \$14}"

# the child(s)
mytc $DEVICE | grep " parent " | awk "{ print \$2 \"_\" \$3 \".value \" \$19}"

exit 0