src/planner

   1 #!/bin/sh
   2 # planner:
   3 # assemble transmission texts from clean texts
   4 # arg1=channel
   5 # environment variables ROOTDIR and SCRIPTDIR must be defined by caller,
   6 # and script must be called from channel directory as working directory
   7
   8 . $SCRIPTDIR/constants.sh
   9
  10 # save channel name for reference - but we should already be in that directory
  11 chan=$1
  12
  13 myself=planner-$chan
  14 logf=`logfile $myself`
  15 statf=$STATUSDIR/$myself
  16
  17 statrep $statf STATUS initializing
  18
  19 # check if config file present, if not, sleep to reduce load
  20 if ! -r $CHANNELCONFIG
  21 then
  22  logit $logf FAIL missing config file $CHANNELCONFIG
  23  statrep $statf STATUS FAIL missing config file $CHANNELCONFIG
  24  sleep 10
  25  return 1
  26 fi
  27
  28 # check if prefix defined -- we cannot define it here by ourselves!
  29 if ! prefix=`configread $CHANNELCONFIG PREFIX`
  30 then
  31  logit $logf FAIL missing PREFIX definition in $CHANNELCONFIG
  32  statrep $statf STATUS FAIL missing PREFIX definition in $CHANNELCONFIG
  33  sleep 10
  34  return 1
  35 fi
  36
  37 # handler for restarting/reloading
  38 restart () {
  39  logit $logf signal reloading configuration files and restarting
  40  RESTARTPLANNER=1
  41 }
  42 # flag initially _set_ to force initializing during launch
  43 # will be reset after initialization routine
  44 RESTARTPLANNER=1
  45 trap restart $SIGDAEMONRESTART
  46
  47 # handler for stopping
  48 finish () {
  49  logit $logf signal finishing
  50  ABORTPLANNER=1
  51 }
  52 ABORTPLANNER=0
  53 trap finish $SIGDAEMONTERMINATE
  54
  55 while test ABORTPLANNER -eq 0
  56 # reduce load in case of severe bugs/problems
  57 do sleep 3
  58 if test $RESTARTPLANNER -eq 1
  59 then
  60  sources=`configread $CHANNELCONFIG SOURCES ',:;'`
  61  logit $logf config sources: $sources"
  62 # last resource default: no postprocessor, i.e `cat`
  63  postprocessor=`configread $CHANNELCONFIG POSTPROCESSOR`
  64  postprocessor=${postprocessor:-/bin/cat}
  65  logit $logf config postprocessor: $postprocessor
  66 # last resource defaults: ToC length 2min, ToC retransmission period 3 slices
  67  toclength=`configread $CHANNELCONFIG TOCLENGTH`
  68  toclength=${toclength:-120}
  69  tocslices=`configread $CHANNELCONFIG TOCSLICES`
  70  tocslices=${tocslices:-3}
  71 # do not restart until signal received again
  72  RESTARTPLANNER=0
  73 fi
  74
  75 done