#!/bin/sh

###################################################################################################
#
# Multigraph munin plugin to monitor Eaton UPS-es through the web interface of the SNMP add-on card.
# The plugin script simply parses the /PSummary.html page and extracts the values from there.
#
# To use this plugin, copy it to the munin's plugin directory (eg. /usr/share/munin/plugins)
# under the name "eatonups_". Don't change this filename! Follow these steps:
#
# 1. Give names to your UPSes, in fqdn style. Like "ups.server1" or "ups.server2". Make sure
#    you can resolve these names as DNS names from the munin machine. You can simply add them
#    as entries in /etc/hosts.
#
# 2. Then symlink it to munin's configured plugins directory (eg. /etc/munin/plugins) with names
#    according to the devices you wish to monitor, eg:
#
#    eatonups_ups.server1
#    eatonups_ups.server2
#
# 3. In  /etc/munin/munin.conf just add these lines for them. Yes, 127.0.0.1 is correct
#    because that points to the munin-node address not the UPS address.
#
#    [eatonups_ups.server1]
#        address 127.0.0.1
#
#    [eatonups_ups.server2]
#        address 127.0.0.1
#
# 4. Restart the munin node by 'service munin-node restart'.
#
#    If all went well, after 5 minutes or so you should have two additional nodes listed
#    on the Web Interface of munin.
#
# Tested & working with Eaton USP model PW9130 1500VA-R, with installed ConnectUPS Web/SNMP Card
# firmware revision V4.36 with munin v.2.0.14 and Ubuntu LTS 12.04
# Created in 2013 by robi
#  v0.2 - fixed frequency graph scale to center at 50Hz (correct value for Europe)
#  v0.1 - initial version
##################################################################################################

case $0 in
    *eatonups_*)
        hostname=${0##*/eatonups_}
        ;;
esac

case $1 in
   config)

echo "multigraph volt_ac"
echo "host_name $hostname"
echo "graph_args --base 1000"
echo "graph_title AC Voltage Mains"
echo "graph_vlabel Volts"
echo "graph_category sensors"
echo "graph_scale no"
echo "graph_info Input and Output voltage of the UPS."
echo "volt_in.label Input"
echo "volt_in.critical 210:250"
echo "volt_in.info Input mains voltage of the UPS."
echo "volt_out.label Output"
echo "volt_out.critical 210:250"
echo "volt_out.info Output mains voltage of the UPS."
echo
echo "multigraph volt_batt"
echo "host_name $hostname"
echo "graph_args --base 1000"
echo "graph_title DC Voltage Battery"
echo "graph_vlabel Volts"
echo "graph_category sensors"
echo "graph_scale no"
echo "graph_info Voltage of the internal battery of the UPS."
echo "volt_batt.label Battery"
echo "volt_batt.critical 45:65"
echo "volt_batt.info Battery voltage of the UPS."
echo
echo "multigraph curr_out"
echo "host_name $hostname"
echo "graph_args --base 1000"
echo "graph_title Output Current"
echo "graph_vlabel Ampers"
echo "graph_category sensors"
echo "graph_scale no"
echo "graph_info Output current of the UPS."
echo "curr_out.label Current"
echo "curr_out.critical 40"
echo "curr_out.info Output current of the UPS."
echo
echo "multigraph power"
echo "host_name $hostname"
echo "graph_args --base 1000"
echo "graph_title Power"
echo "graph_vlabel W or VA"
echo "graph_category sensors"
echo "graph_scale no"
echo "graph_info Output Power of the UPS."
echo "power_true.label True"
echo "power_true.critical 800"
echo "power_true.info True Power output of the UPS (Watts)."
echo "power_appr.label Apparent"
echo "power_appr.critical 1500"
echo "power_appr.info Apparent Power output of the UPS (VA)."
echo
echo "multigraph runtime"
echo "host_name $hostname"
echo "graph_args --base 1000"
echo "graph_title Runtime"
echo "graph_vlabel minutes"
echo "graph_category sensors"
echo "graph_scale no"
echo "graph_info Remaining runtime of the UPS."
echo "runtime.label Runtime"
echo "runtime.critical 30:"
echo "runtime.info Remaining runtime of the UPS (minutes)."
echo
echo "multigraph load"
echo "host_name $hostname"
echo "graph_args --base 1000"
echo "graph_title Load"
echo "graph_vlabel %"
echo "graph_category sensors"
echo "graph_scale no"
echo "graph_info Load of the UPS."
echo "load.label Load"
echo "load.critical 60"
echo "load.info Load of the UPS (percent)."
echo
echo "multigraph freq_in"
echo "host_name $hostname"
echo "graph_args --base 1000 -l 48.8 -u 51.2 --rigid --alt-y-grid"
echo "graph_title Frequency Input"
echo "graph_vlabel Hz"
echo "graph_category sensors"
echo "graph_scale no"
echo "graph_info Input frequency of the UPS."
echo "freq_in.label Hz in"
echo "freq_in.critical 49:51"
echo "freq_in.info Input frequency of the UPS."
echo
echo "multigraph freq_out"
echo "host_name $hostname"
echo "graph_args --base 1000 -l 48.8 -u 51.2 --rigid --alt-y-grid"
echo "graph_title Frequency Output"
echo "graph_vlabel Hz"
echo "graph_category sensors"
echo "graph_scale no"
echo "graph_info Output frequency of the UPS."
echo "freq_out.label Hz out"
echo "freq_out.critical 49:51"
echo "freq_out.info Output frequency of the UPS."
echo
echo "multigraph temp"
echo "host_name $hostname"
echo "graph_args --base 1000"
echo "graph_title Temperature"
echo "graph_vlabel degrees Celsius"
echo "graph_category sensors"
echo "graph_scale no"
echo "graph_info Internal Temperature of the UPS."
echo "temp.label Load"
echo "temp.critical 80"
echo "temp.info Internal Temperature of the UPS (degrees Celsius)."
echo

        exit 0;;
esac

statusfile=/tmp/eatonups_munin_$hostname.html

wget -O $statusfile http://$hostname/PSummary.html -o /dev/null --timeout 9

if [ -f "$statusfile" ]
then
	volt_in=`sed -n -e '/Voltage In/{n;p;}' $statusfile | sed 's/<[^>]*>//g'`
	volt_out=`sed -n -e '/Voltage Out/{n;p;}' $statusfile | sed 's/<[^>]*>//g'`
	volt_batt=`sed -n -e '/Voltage</{n;p;}' $statusfile | sed 's/<[^>]*>//g'`
	curr_out=`sed -n -e '/Current Out/{n;p;}' $statusfile | sed 's/<[^>]*>//g'`
	power_true=`sed -n -e '/True Power/{n;p;}' $statusfile | sed 's/<[^>]*>//g'`
	power_appr=`sed -n -e '/Apparent Power/{n;p;}' $statusfile | sed 's/<[^>]*>//g'`
	runtime=`sed -n -e '/Runtime/{n;p;}' $statusfile | sed 's/<[^>]*>//g'`
	freq_in=`sed -n -e '/Frequency/{n;p;}' $statusfile | sed 's/<[^>]*>//g' | sed -n '1p'`
	freq_out=`sed -n -e '/Frequency/{n;p;}' $statusfile | sed 's/<[^>]*>//g' | sed -n '2p'`
	load=`sed -n -e '/UPS Load/{n;p;}' $statusfile | sed 's/<[^>]*>//g'`
	temp=`sed -n -e '/UPS Internal Temperature/{n;p;}' $statusfile | sed 's/<[^>]*>//g'`

	rm -f $statusfile
fi

echo "multigraph volt_ac"
echo -n "volt_in.value "
if [ -n "$volt_in" ]; then
        echo "$volt_in"
else
        echo "U"
fi
echo -n "volt_out.value "
if [ -n "$volt_out" ]; then
        echo "$volt_out"
else
        echo "U"
fi
echo

echo "multigraph volt_batt"
echo -n "volt_batt.value "
if [ -n "$volt_batt" ]; then
        echo "$volt_batt"
else
        echo "U"
fi
echo

echo "multigraph curr_out"
echo -n "curr_out.value "
if [ -n "$curr_out" ]; then
        echo "$curr_out"
else
        echo "U"
fi
echo

echo "multigraph power"
echo -n "power_true.value "
if [ -n "$power_true" ]; then
        echo "$power_true"
else
        echo "U"
fi
echo -n "power_appr.value "
if [ -n "$power_appr" ]; then
        echo "$power_appr"
else
        echo "U"
fi
echo

echo "multigraph runtime"
echo -n "runtime.value "
if [ -n "$runtime" ]; then
        echo "$runtime"
else
        echo "U"
fi
echo

echo "multigraph load"
echo -n "load.value "
if [ -n "$load" ]; then
        echo "$load"
else
        echo "U"
fi
echo

echo "multigraph freq_in"
echo -n "freq_in.value "
if [ -n "$freq_in" ]; then
        echo "$freq_in"
else
        echo "U"
fi
echo

echo "multigraph freq_out"
echo -n "freq_out.value "
if [ -n "$freq_out" ]; then
        echo "$freq_out"
else
        echo "U"
fi
echo

echo "multigraph temp"
echo -n "temp.value "
if [ -n "$temp" ]; then
        echo "$temp"
else
        echo "U"
fi
echo