khanat-code-old/code/ryzom/tools/scripts/linux/service_launcher.sh
2010-05-27 07:31:08 -05:00

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#!/bin/sh
# 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
#DOMAIN=$(pwd |sed "s%/home/nevrax/%%" | sed "s%/.*%%")
DOMAIN=shard
#NAME_BASE=$(pwd | sed 's/\/home\/nevrax\///' | sed 's/^.*\///')
NAME_BASE="$1/$1"
mkdir $1
shift
#if [ _$DOMAIN == _pre_live ]
# then
CTRL_FILE=${NAME_BASE}.launch_ctrl
NEXT_CTRL_FILE=${NAME_BASE}.deferred_launch_ctrl
#elif [ _$DOMAIN == _pre_pre_live ]
# then
# CTRL_FILE=${NAME_BASE}.launch_ctrl
# NEXT_CTRL_FILE=${NAME_BASE}.deferred_launch_ctrl
#else
# CTRL_FILE=${NAME_BASE}_immediate.launch_ctrl
# NEXT_CTRL_FILE=${NAME_BASE}_waiting.launch_ctrl
#fi
STATE_FILE=${NAME_BASE}.state
START_COUNTER_FILE=${NAME_BASE}.start_count
CTRL_CMDLINE=$*
echo
echo ---------------------------------------------------------------------------------
echo Starting service launcher
echo ---------------------------------------------------------------------------------
printf "%-16s = " CMDLINE ; echo $CTRL_CMDLINE
printf "%-16s = " CTRL_FILE ; echo $CTRL_FILE
printf "%-16s = " NEXT_CTRL_FILE ; echo $NEXT_CTRL_FILE
printf "%-16s = " STATE_FILE ; echo $STATE_FILE
echo ---------------------------------------------------------------------------------
echo
# reinit the start counter
echo 0 > $START_COUNTER_FILE
START_COUNTER=0
echo Press ENTER to launch program
while true
do
# see if the conditions are right to launch the app
if [ -e $CTRL_FILE ]
then
# a control file exists so read it's contents
CTRL_COMMAND=_$(cat $CTRL_FILE)_
# do we have a 'launch' command?
if [ $CTRL_COMMAND == _LAUNCH_ ]
then
# update the start counter
START_COUNTER=$(( $START_COUNTER + 1 ))
echo $START_COUNTER > $START_COUNTER_FILE
# big nasty hack to deal with the special cases of ryzom_naming_service and ryzom_admin_service who have badly names cfg files
for f in ryzom_*cfg
do
cp $f $(echo $f | sed "s/ryzom_//")
done
# we have a launch command so prepare, launch, wait for exit and do the housekeeping
echo -----------------------------------------------------------------------
echo Launching ...
echo
printf RUNNING > $STATE_FILE
$CTRL_CMDLINE
echo -----------------------------------------------------------------------
printf STOPPED > $STATE_FILE
# consume (remove) the control file to allow start once
rm $CTRL_FILE
echo Press ENTER to relaunch
fi
fi
# either we haven't launched the app yet or we have launched and it has exitted
if [ -e $NEXT_CTRL_FILE ]
then
# we have some kind of relaunch directive lined up so deal with it
mv $NEXT_CTRL_FILE $CTRL_FILE
else
# give the terminal user a chance to press enter to provoke a re-launch
HOLD=HOLD
read -t2 HOLD
if [ _${HOLD}_ != _HOLD_ ]
then
printf LAUNCH > $CTRL_FILE
fi
fi
done