# !/bin/sh
#
### BEGIN INIT INFO
# Provides:          uwsgi
# Required-Start:    $network
# Required-Stop:     $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: uwsgi application server
### END INIT INFO

# Author: Alex J. Crowe <alex@pancentric.com>

DESC="uwsgi emperor daemon"
NAME="uwsgi"
DAEMON="/usr/local/bin/uwsgi"
DAEMON_AGRS="--ini /etc/uwsgi/emperor.ini"
SCRIPTNAME=/etc/init.d/$NAME
PIDFILE="/var/run/uwsgi/emperor.pid"
RUNDIR="/var/run/uwsgi"

[ -x "$DAEMON" ] || exit 0

if [ ! -d "$RUNDIR" ]
then
        mkdir "$RUNDIR"
        chown root:www-data "$RUNDIR"
        chmod 770 "$RUNDIR"
fi

running_pid()
{
    # Check if a given process pid's cmdline matches a given name
    pid=$1
    name=$2
    [ -z "$pid" ] && return 1
    [ ! -d /proc/$pid ] &&  return 1
    (cat /proc/$pid/cmdline | tr "\000" "\n"|grep -q $name) || return 1
    return 0
}

running()
{
    # Check if the process is running looking at /proc
    # (works for all users)

    # No pidfile, probably no daemon present
    [ ! -f "$PIDFILE" ] && return 1

    # Obtain the pid and check it against the binary name
    pid=`cat $PIDFILE`
    running_pid $pid $DAEMON || return 1
    return 0
}

start() {
    if [ -e $PIDFILE ]; then 
        echo "$DESC - already running with pid: `cat $PIDFILE`"
        exit 0
    fi
    $DAEMON --ini /etc/uwsgi/emperor.ini
}

stop() {
    if [ -f $PIDFILE ]; then
        kill `cat $PIDFILE`
        rm $PIDFILE
    else
        echo "PID not found at $PIDFILE exiting"
        exit 1
    fi
}

case "$1" in 
    start)
        echo "Starting $DESC"
        start
    ;;
    stop)
        echo "Stopping $DESC"
        stop
    ;;
    status)
    echo -n "$DESC is "
    if running ;  then
        echo "running"
    else
        echo "not running."
        exit 1
    fi
    ;;
    restart)
        stop
        sleep 5
        start
        exit 0
    ;;
    *)
        echo "Usage: $SCRIPTNAME {start|stop|restart}" >&2
        exit 3
    ;;
esac

exit 0