init

#!/bin/bash

# chkconfig: 345 95 20

NAME=grimoire
VERSION=0.3.0
PID_DIR=/srv/www/grimoire.arrdem.com
PID_FILE=$PID_DIR/$NAME.pid
mkdir -p $PID_DIR

# returns 0 if PID in file is running, 1 if otherwise
process_running() {
    pid=`cat "$PID_FILE" 2>/dev/null`
    if [ "$pid" = '' ]
    then
        return 1 # PID file does not exist
    else
        kill_report=`kill -0 $pid 2>&1`
        if [ "$kill_report" = '' ]
        then
            return 0
        else
            echo "Stale PID file exists at $PID_FILE"
            return 1
        fi
    fi
}

start() {
    if process_running
    then
        echo "$NAME is already running as process `cat $PID_FILE`."
        exit 1
    fi
    echo "Starting $NAME"
    lein serve &> grimoire.log &
    PID=$!
    echo $PID > $PID_FILE
    exit 0
}

stop() {
    if ! process_running
    then
        echo "$NAME is not running."
    else
        echo "Shutting down $NAME"
        kill `cat $PID_FILE`
        ps -ax | grep "java -classpath /srv/www/grimoire.arrdem.com" | awk "{print \$1}" | xargs kill
        rm $PID_FILE
    fi
}

force-stop() {
    if ! process_running
    then
        echo "$NAME is not running."
    else
        echo "Forcefully shutting down $NAME"
        kill -9 `cat $PID_FILE`
        rm $PID_FILE
    fi
}

status() {
    if process_running
    then
        echo "$NAME is running."
    else
        echo "$NAME is not running."
    fi
    exit 0
}

case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    force-stop)
        force-stop
        ;;
    status)
        status
        ;;
    restart)
        stop
        sleep 5
        start
        ;;
    deploy)
        stop
        sleep 5
        start
        ;;
    *)
        echo "Usage: "$NAME"d {start|stop|status|restart|force-stop}"
        exit 1
        ;;
esac
exit $?