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#!/bin/bash
#
# This script polls gnunet-stats repeatedly to create statistics plots.
# Use 'collect' to collect statistics and 'plot' to plot whats been
# collected. All plots will be written to $STATDIR as separate .png files.
#
# WARNING: calling 'collect' will delete all files in $STATDIR.
#
# Requires: gnuplot
#
# Note: gnuplot syntax has changed across versions. This
# script perhaps will not produce color images with older gnuplots.
# The script should work atleast with gnuplot 3.8k patchlevel 1.
#
SLEEP=120
GNUNET=$HOME/
STATDIR=$GNUNET/stats
IMAGEVIEWER='display'
TMP=/tmp/.gnuplot_error
##########################################################################
mkdir -p $STATDIR
case "$1" in
collect)
rm -f $STATDIR/*
STARTTIME=`date +%s`
IFS=":"
while true; do
NOW=`date +%s`
RELAT=$[$NOW-$STARTTIME]
gnunet-statistics | while read KEY VALUE; do
# Collect stats of previous round
if [ -e "$STATDIR/$KEY.dat" ]; then
PREV=`tail --lines=1 "$STATDIR/$KEY.dat" | sed -e "s/.* //g"`
else
PREV=$VALUE
fi
# Write new stats
echo $RELAT $VALUE >>"$STATDIR/$KEY.dat"
echo $RELAT $PREV $VALUE >>"$STATDIR/$KEY.diff"
done
sleep $SLEEP
done
;;
plot)
# Plot incremental
ls -1 $STATDIR/*.dat | while read FILENAME; do
BASENAME=`basename "$FILENAME" | sed -e "s/ *\..*//g"`
echo "set terminal png;set output '$FILENAME.png';set title '$BASENAME - incr';plot '$FILENAME' using (\$1/60):(\$2) title '' with lines;" | nice gnuplot 2> $TMP
EC=`cat $TMP | grep "empty" | grep "Warning" | wc -l`
if test $EC -ge 1
then
rm "$FILENAME.png"
fi
done
# Plot diff
ls -1 $STATDIR/*.diff | while read FILENAME; do
BASENAME=`basename "$FILENAME" | sed -e "s/ *\..*//g"`
echo "set terminal png;set output '$FILENAME.png';set title '$BASENAME - diff';plot '$FILENAME' using (\$1/60):(\$3-\$2) title '' with lines;" | nice gnuplot 2> $TMP
EC=`cat $TMP | grep "empty" | grep "Warning" | wc -l`
if test $EC -ge 1
then
rm "$FILENAME.png"
fi
done
;;
view)
$IMAGEVIEWER $STATDIR/*.png
;;
*)
echo $"Usage: $0 {collect|plot|view}"
exit 1
esac
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