#!/bin/sh
#
# plugin to monitor mixminion stats
# pesco 2011, isc license

# munin metadata:
#%# capabilities=autoconf suggest

PATH=/bin:/usr/bin:/usr/local/bin

case $0 in
    *_relay)
	FIELDNAMES="AttemptedRelay SuccessfulRelay FailedRelay UnretriableRelay ReceivedPacket";;
    *_exit)
	FIELDNAMES="AttemptedDelivery SuccessfulDelivery FailedDelivery UnretriableDelivery";;
    *)
	FIELDNAMES="ReceivedConnection AttemptedConnect SuccessfulConnect FailedConnect";;
esac

case $1 in
    autoconf)
	# see if we got mixminion installed
	if which mixminiond >/dev/null; then
		echo "yes"
	else
		echo "no"
	fi
	exit 0;;
    suggest)
	desc="`cat /var/lib/mixminion/current-desc`"
	echo connections
	grep -q '^\[Incoming/MMTP\]' "$desc" && echo relay
	grep -q '^\[Delivery/SMTP\]' "$desc" && echo exit
	exit 0;;
    config)
	echo "graph_category mail"
	echo "graph_args --base 1000 -l 0"
	case $0 in
	    *_relay)
		cat <<'EOM'
graph_title Mixminion relay
graph_vlabel packets per second

AttemptedRelay.label packets to relay
AttemptedRelay.info Total number of packets that we attempted to relay
AttemptedRelay.draw LINE2

FailedRelay.label relay errors
FailedRelay.info Number of packets that we (momentarily) failed to relay
FailedRelay.draw AREASTACK

UnretriableRelay.label permanent failures
UnretriableRelay.info Number of packets that we permanently gave up trying to relay
UnretriableRelay.draw AREASTACK

SuccessfulRelay.label relay success
SuccessfulRelay.info Number of packets that we successfully relayed
SuccessfulRelay.draw AREASTACK
SuccessfulRelay.graph no

ReceivedPacket.label incoming packets
ReceivedPacket.info Total number of packets that we received
ReceivedPacket.draw LINE2
EOM
		;;
	    *_exit)
		cat <<'EOM'
graph_title Mixminion exit
graph_vlabel messages per second

AttemptedDelivery.label messages to deliver
AttemptedDelivery.info Total number of emails that we tried to deliver
AttemptedDelivery.draw LINE2

FailedDelivery.label delivery errors
FailedDelivery.info Number of emails that we (momentarily) failed to deliver
FailedDelivery.draw AREASTACK

UnretriableDelivery.label permanent failures
UnretriableDelivery.info Number of emails that we permanently gave up trying to deliver
UnretriableDelivery.draw AREASTACK

SuccessfulDelivery.label delivery successes
SuccessfulDelivery.info Number of emails successfully delivered
SuccessfulDelivery.draw AREASTACK
SuccessfulDelivery.graph no
EOM
		;;
	    *)
		cat <<'EOM'
graph_title Mixminion connections
graph_vlabel connections in (-) / out (+) per second

ReceivedConnection.label incoming
ReceivedConnection.info number of successful incoming connections
ReceivedConnection.graph no

AttemptedConnect.label total conn's
AttemptedConnect.info Total number of attempted outgoing connections
AttemptedConnect.draw LINE2
AttemptedConnect.negative ReceivedConnection

FailedConnect.label conn. failures
FailedConnect.info Number of failed outgoing connections
FailedConnect.draw AREASTACK

SuccessfulConnect.label successful
SuccessfulConnect.info Number of successful in-/outgoin connections
SuccessfulConnect.draw AREASTACK
SuccessfulConnect.graph no
EOM
		;;
	esac
	for field in $FIELDNAMES; do
		echo "$field.type DERIVE"
		echo "$field.min 0"
	done
	exit 0;;
esac

mixminion server-stats 2>/dev/null | perl -e '
	while(<STDIN>) {
	  if(/^ *([[:alnum:]]+): *([.[:digit:]]+)/ &&
             grep {$_ eq $1} @ARGV) {
	    print "$1.value $2\n";
	  }
	}
	' $FIELDNAMES