nut-debian/tools/nut-recorder.sh
2022-07-10 09:23:45 +02:00

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#!/bin/sh
################################################################################
#
# nut-recorder
# An utility to record device running sequence (Ie power failures or any
# other change) and dump it in a .seq format
# The .seq file can then be used by the 'dummy-ups driver to replay the
# sequence.
#
################################################################################
# FIXME:
# - implement PAUSE / RESUME (do not increment TIMER) on pressing space (?)
# - implement support for creating either .dev (static dump) or .seq
# - implement dump of instcmd and upsrw
################################################################################
strUsage="Usage: nut-recorder <device-name> [output-file] [interval]"
# log data each 5 seconds
DEFAULT_INTERVAL=5
# temporary files location
TEMP_DIR="/tmp"
# output this file by default
DEFAULT_OUTPUT="dummy-device.seq"
# Process command line parameters
if [ -z "$1" ]; then
echo "$strUsage"
exit
else
devName=$1
fi
if [ -z "$2" ]; then
outFile=$DEFAULT_OUTPUT
else
outFile=$2
fi
if [ -z "$3" ]; then
pollInterval=$DEFAULT_INTERVAL
else
pollInterval=$3
fi
# initialize TIMER value
curTimer=0
# Test communication with the device
testResult="`upsc $devName > /dev/null`"
if [ $? -gt 0 ]; then
echo "$devName: $testResult"
exit
fi
# initialize output file
echo "# dummy-ups sequence recorded with $0\n"> $outFile
# initialize data
upsc $devName >> $outFile
cp -f $outFile ${TEMP_DIR}/prevDump.tmp
echo "Initial data:\n"
cat $outFile
while (true)
do
# rest a bit before getting fresh data
sleep $pollInterval
# update the TIMER value
curTimer=`expr $curTimer + $pollInterval`
# dump the current data
testResult="`upsc $devName > ${TEMP_DIR}/curDump.tmp`"
if [ $? -gt 0 ]; then
echo "$devName: $testResult"
# FIXME: what to do (pause, exit)?
fi
# do the diff
dataDiff="`diff --unchanged-line-format='' --old-line-format='' --new-line-format='%L' ${TEMP_DIR}/prevDump.tmp ${TEMP_DIR}/curDump.tmp`"
# dump actual, if any
if [ ! -z "${dataDiff}" ]; then
# dump differences
echo "TIMER $curTimer" >> $outFile
echo "$dataDiff" >> $outFile
# and echo out
echo "TIMER $curTimer"
echo "$dataDiff"
curTimer=0
fi
# rotate dumps
mv ${TEMP_DIR}/curDump.tmp ${TEMP_DIR}/prevDump.tmp
done