JLigier-local.sh

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#!/bin/zsh
#
# \author mdejong
#
script=${0##*/}

# ------------------------------------------------------------------------------------------
#
#                             Utility script to locally run JLigier.
#
# ------------------------------------------------------------------------------------------

if [ -z $JPP_DIR ]; then
    echo "Variable JPP_DIR undefined."
    exit
fi

source $JPP_DIR/setenv.sh $JPP_DIR >& /dev/null

set_variable   PORT            5553          
set_variable   TIMEOUT_US      3000          
set_variable:  DEBUG           JNET_DEBUG     1
set_variable:  WORKDIR         JNET_WORKDIR   ${TMPDIR:-/tmp}/         
set_variable   APPLICATION     JLigier

if do_usage $*; then
    usage  "$script [port] <option>"\
           "\nPossible options: start, stop, continue, restart."
fi

case $# in
    2) set_variable  OPTION  $2
       set_variable  PORT    $1;;
    1) set_variable  OPTION  $1;;
    *) usage;;
esac

if   [[ $OPTION != "start" && $OPTION != "stop" && $OPTION != "continue" && $OPTION != "restart" ]]; then
    fatal "Invalid option $OPTION."    
fi

#
# get PID
#

if [[ $(uname) == "Darwin" ]]; then
  alias get_pid="pgrep -lf '${APPLICATION} -P ${PORT}' | cut -d ' ' -f 1"
else
  alias get_pid='eval ps h -o \"%p %a\" -C ${APPLICATION} | eval sed -n \"s/ \*\\\\\(\[0-9\]\*\\\\\) ${APPLICATION} \.\*-P ${PORT}\\\\\( \\\\\|\$\\\\\)\.\*/\\\1/p\"'
fi


if   [[ $OPTION == "stop" || $OPTION == "restart" ]]; then

    PID=`get_pid`

    if [[ -n $PID ]]; then 
        notice "Stop $APPLICATION using port $PORT with PID $PID."
        kill -9 $PID
    fi

    OPTION=${OPTION/restart/start}

elif [[ $OPTION == "continue" ]]; then

    PID=`get_pid`
    
    if [[ -n $PID ]]; then 
        notice "$APPLICATION using port $PORT is running with PID $PID."
    else
        OPTION=start
    fi

fi

if [[ $OPTION = "start" ]]; then

    PID=`get_pid`

    if [[ -n $PID ]]; then 
        fatal "$APPLICATION using port $PORT is already running with PID $PID."
    fi

    notice "$APPLICATION -P $PORT -T $TIMEOUT_US -d $DEBUG --! >& $WORKDIR/ligier.log"
    nohup   $APPLICATION -P $PORT -T $TIMEOUT_US -d $DEBUG --! >& $WORKDIR/ligier.log &

    for (( i = 0; $i != 20; ++i )); do

        sleep 1

        PID=`get_pid`

        if [[ -n $PID ]]; then 
            notice "$APPLICATION using port $PORT is now running with PID $PID."
            return 0
        fi
    done

    error "$APPLICATION is not running on $HOST."
fi