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#!/bin/bash
usage () {
echo "Usage: $0 [-h] [-s] [-t <minutes_needed>]"
echo
echo "-h - Print this help/usage message and quit"
echo "-s - Run silently (default is verbose)"
echo "-t - Minutes of idle time needed (default is 20)"
echo "-v - Be more verbose for debugging"
echo
echo "Silent mode is recommended for use in cron jobs or scripts."
exit $1
}
msg () { # A status reporting function
[ "$VERBOSE" -ne 0 ] && echo "$*"
}
mysql_cmd () {
/usr/bin/mysql -u root mythconverg -sBe "$*"
}
# Command line argument handling
VERBOSE=1
TIME_BEFORE=20
TIME_AFTER=5 # Only adjustable by editing here
while getopts "hst:v" OPT ; do
case $OPT in
h) usage 0 ;;
s) VERBOSE=0 ;;
t) TIME_BEFORE=$OPTARG ;;
v) VERBOSE=2 ;;
*) usage 1 ;;
esac
done
# Check for extra cruft on the command line...
shift $(($OPTIND - 1))
[ -n "$*" ] && usage 1
msg "Checking what MythTV is doing now or plans within $TIME_BEFORE minutes..."
msg
/usr/bin/mythshutdown -s 1
BUSY="$?"
msg "mythshutdown returned $BUSY"
# Ignore certain non-zero flag values
BUSY=$(($BUSY & 0x2F))
SCHEMALOCK=$(mysql_cmd "select count(*) from schemalock")
msg "schemalock $SCHEMALOCK"
JOBS=$(mysql_cmd "select count(*) from jobqueue where status = 4")
msg "running jobs $JOBS"
INUSE=$(mysql_cmd "select count(*) from inuseprograms")
msg "inuse programs $INUSE"
POTENTIAL=$(mysql_cmd "select count(*) from recordmatch as rm, program as p
where rm.chanid = p.chanid and rm.starttime = p.starttime
and rm.starttime < now() + interval $TIME_BEFORE minute
and now() < p.endtime + interval $TIME_AFTER minute")
msg "potential recordings $POTENTIAL"
# See if any of the potential upcoming recordings are real.
# This is ugly, but only the backend knows what programs it really
# plans to record or ignore, so we can't just check the DB. :-(
if [ "$VERBOSE" -ge 2 ] ; then
mysql_cmd "select p.starttime, p.endtime, p.title, subtitle
from recordmatch as rm, program as p
where rm.chanid = p.chanid and rm.starttime = p.starttime
and rm.starttime < now() + interval $TIME_BEFORE minute
and now() < p.endtime + interval $TIME_AFTER minute
order by p.starttime, p.endtime"
fi
UPCOMING=$(/usr/bin/mythbackend --printsched 2>&1 |
/bin/awk -v potential=$POTENTIAL '
BEGIN {item=-1;real=0}
/--- print list start ---/,/--- print list end ---/ {
if (item>0 && item<=potential && substr($0,70,1) ~ "[0-9]") real+=1;
item += 1;
}
END {print real}
')
msg "planned recordings $UPCOMING"
if [ "$VERBOSE" -ge 2 ] ; then
/usr/bin/mythbackend --printsched 2>&1 |
/bin/awk -v potential=$POTENTIAL '
BEGIN {item=-1}
/--- print list start ---/,/--- print list end ---/ {
if (item>0 && item<=potential) print $0;
item += 1;
}'
fi
activities=$(($BUSY + $SCHEMALOCK + $JOBS + $INUSE + $UPCOMING))
msg
if [ "$activities" -eq 0 ] ; then
msg "System is idle"
exit 0
else
msg "System is busy"
exit 1
fi
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