#! /bin/sh
### BEGIN INIT INFO
# Provides:          gnue-appserver
# Required-Start:    $local_fs $remote_fs
# Required-Stop:     $local_fs $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: GNUe AppServer
# Description:       GNU Enterprise Application Server
### END INIT INFO

# Author: GNU Enterprise Team (gnue-dev@gnu.org)

PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="GNU Enterprise Application Server"
NAME=gnue-appserver
DAEMON=/usr/bin/$NAME
DAEMON_ARGS="--silent"
PIDFILE=/var/run/gnue/appserver.pid
SCRIPTNAME=/etc/init.d/$NAME
USER=daemon

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

#
# Function that starts the daemon/service
#
do_start()
{
    # Return
    #   0 if daemon has been started
    #   1 if daemon was already running
    #   2 if daemon could not be started
    start-stop-daemon --start --quiet --user $USER --pidfile $PIDFILE \
                --startas $DAEMON --test > /dev/null || return 1
    start-stop-daemon --start --quiet --chuid $USER --pidfile $PIDFILE \
                --startas $DAEMON -- $DAEMON_ARGS || return 2
}

#
# Function that stops the daemon/service
#
do_stop()
{
    start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 \
                --user $USER --pidfile $PIDFILE
    RETVAL="$?"
    [ "$RETVAL" = 2 ] && return 2
    # Many daemons don't delete their pidfiles when they exit.
    rm -f $PIDFILE
    return "$RETVAL"
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
    start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE
    return 0
}

case "$1" in
  start)
    [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
    do_start
    case "$?" in
        0|1) [ "$VERBOSE" != no ] && log_end_msg 0 || exit 0;;
        2) [ "$VERBOSE" != no ] && log_end_msg 1 || exit 1;;
    esac
    ;;
  stop)
    [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
    do_stop
    case "$?" in
        0|1) [ "$VERBOSE" != no ] && log_end_msg 0 || exit 0;;
        2) [ "$VERBOSE" != no ] && log_end_msg 1 || exit 1;;
    esac
    ;;
  reload|force-reload)
    log_daemon_msg "Reloading $DESC" "$NAME"
    do_reload
    log_end_msg $?
    ;;
  restart)
    log_daemon_msg "Restarting $DESC" "$NAME"
    do_stop
    case "$?" in
      0|1)
        do_start
        case "$?" in
            0) log_end_msg 0 ;;
            1) log_end_msg 1 ;; # Old process is still running
            *) log_end_msg 1 ;; # Failed to start
        esac
        ;;
      *)
        # Failed to stop
        log_end_msg 1
        ;;
    esac
    ;;
  *)
    echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
    exit 3
    ;;
esac
