#!/bin/sh
# realprod-nanny --- keep checking a Real stream, and restart things
# if it goes away.
#
# Copyright © 2000-2008 Jamie Zawinski <jwz@dnalounge.com>.
#
# Permission to use, copy, modify, distribute, and sell this software and its
# documentation for any purpose is hereby granted without fee, provided that
# the above copyright notice appear in all copies and that both that
# copyright notice and this permission notice appear in supporting
# documentation.  No representations are made about the suitability of this
# software for any purpose.  It is provided "as is" without express or 
# implied warranty.
#
# Created: 16-Jul-2000

if [ $# != 0 ]; then
  echo "usage: $0"
  echo "   you probably meant /etc/rc.d/init.d/realprod-nanny $@" >&2
  exit 1
fi


PATH=/home/jwz/src/realproducer:$PATH
export PATH

progname=realprod-nanny

initd=/etc/rc.d/init.d/realprod
url=rtsp://svr1.streams.groovefactory.com:7070/broadcast/groovefactory/dnalounge/live.rm


pingable() {
  if ( ping -q -n -c 1 $1 >/dev/null ); then
    return 0
  else
    return 1
  fi
}

check_once() {
   if ! rtsp-ping $url ; then
    echo "$url not found!  restarting realproducer..." >&2
    $initd restart
  fi
}


check_loop() {
  while true; do
    check_once
    sleep 30
  done
}

# log all stdout/stderr text to syslog
log_lines() {
  while read line ; do
    logger -st "$progname" " $line"
  done
}

echo "started at `date`" | log_lines
check_loop 2>&1 | log_lines

exit 0