ryzom/tools/scripts/linux/service_launcher.sh

   1 #!/bin/sh
   2
   3 # the object is to make a launcher script that works with a command file to determine when to launch the application that it is responsible for
   4
   5 #DOMAIN=$(pwd |sed "s%/home/nevrax/%%" | sed "s%/.*%%")
   6 DOMAIN=shard
   7 #NAME_BASE=$(pwd | sed 's/\/home\/nevrax\///' | sed 's/^.*\///')
   8
   9 NAME_BASE="$1/$1"
  10 mkdir $1
  11 shift
  12
  13 #if [ _$DOMAIN == _pre_live ]
  14 #       then
  15         CTRL_FILE=${NAME_BASE}.launch_ctrl
  16         NEXT_CTRL_FILE=${NAME_BASE}.deferred_launch_ctrl
  17 #elif [ _$DOMAIN == _pre_pre_live ]
  18 #       then
  19 #       CTRL_FILE=${NAME_BASE}.launch_ctrl
  20 #       NEXT_CTRL_FILE=${NAME_BASE}.deferred_launch_ctrl
  21 #else
  22 #       CTRL_FILE=${NAME_BASE}_immediate.launch_ctrl
  23 #       NEXT_CTRL_FILE=${NAME_BASE}_waiting.launch_ctrl
  24 #fi
  25 STATE_FILE=${NAME_BASE}.state
  26 START_COUNTER_FILE=${NAME_BASE}.start_count
  27 CTRL_CMDLINE=$*
  28
  29 echo
  30 echo ---------------------------------------------------------------------------------
  31 echo Starting service launcher
  32 echo ---------------------------------------------------------------------------------
  33 printf "%-16s = " CMDLINE         ; echo $CTRL_CMDLINE
  34 printf "%-16s = " CTRL_FILE       ; echo $CTRL_FILE
  35 printf "%-16s = " NEXT_CTRL_FILE  ; echo $NEXT_CTRL_FILE
  36 printf "%-16s = " STATE_FILE      ; echo $STATE_FILE
  37 echo ---------------------------------------------------------------------------------
  38 echo
  39
  40 # reinit the start counter
  41 echo 0 > $START_COUNTER_FILE
  42 START_COUNTER=0
  43
  44 echo Press ENTER to launch program
  45 while true
  46 do
  47
  48   # see if the conditions are right to launch the app
  49   if [ -e $CTRL_FILE ]
  50       then
  51
  52       # a control file exists so read it's contents
  53       CTRL_COMMAND=_$(cat $CTRL_FILE)_
  54
  55       # do we have a 'launch' command?
  56       if [ $CTRL_COMMAND = _LAUNCH_ ]
  57           then
  58
  59                   # update the start counter
  60                   START_COUNTER=$(( $START_COUNTER + 1 ))
  61                   echo $START_COUNTER > $START_COUNTER_FILE
  62
  63                   # big nasty hack to deal with the special cases of ryzom_naming_service and ryzom_admin_service who have badly names cfg files
  64                   for f in ryzom_*cfg
  65                     do
  66                     cp $f $(echo $f | sed "s/ryzom_//")
  67                   done
  68
  69                   # we have a launch command so prepare, launch, wait for exit and do the housekeeping
  70                   echo -----------------------------------------------------------------------
  71                   echo Launching ...
  72                   echo
  73                   printf RUNNING > $STATE_FILE
  74
  75           $CTRL_CMDLINE
  76
  77                   echo -----------------------------------------------------------------------
  78                   printf STOPPED > $STATE_FILE
  79
  80                   # consume (remove) the control file to allow start once
  81                   rm -f $CTRL_FILE
  82
  83                   echo Press ENTER to relaunch
  84        fi
  85   fi
  86
  87   # either we haven't launched the app yet or we have launched and it has exitted
  88   if [ -e $NEXT_CTRL_FILE ]
  89   then
  90       # we have some kind of relaunch directive lined up so deal with it
  91       mv $NEXT_CTRL_FILE $CTRL_FILE
  92   else
  93       # give the terminal user a chance to press enter to provoke a re-launch when auto-relaunch in AES is disabled
  94       HOLD=`sh -ic '{ read a; echo "ENTER" 1>&3; kill 0; } | { sleep 2; kill 0; }' 3>&1 2>/dev/null`
  95       if [ "${HOLD}" = "ENTER" ]
  96       then
  97           printf LAUNCH > $CTRL_FILE
  98       fi
  99   fi
 100
 101 done
 102