#! /bin/sh
### BEGIN INIT INFO
# Provides:          geoserver
# Required-Start:    $local_fs $remote_fs
# Required-Stop:     $local_fs $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      S 0 1 6
# Short-Description: GeoServer OGC server
### END INIT INFO

# Author: Lennart Jütte <lenn@rtjuette.de>

# Geoserver configuration - use /etc/default/geoserver to override these vars
# user that shall run GeoServer
USER=ubuntu
GEOSERVER_DATA_DIR=/var/www/geoserver/data_dir
GEOSERVER_HOME=/var/www/geoserver

PATH=/usr/sbin:/usr/bin:/sbin:/bin
DESC="GeoServer daemon"
NAME=geoserver
JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
JAVA_OPTS="-Xms128m -Xmx512m"
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME

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

DAEMON="$JAVA_HOME/bin/java"
DAEMON_ARGS="$JAVA_OPTS $DEBUG_OPTS -DGEOSERVER_DATA_DIR=$GEOSERVER_DATA_DIR -Djava.awt.headless=true -jar start.jar"

# Load the VERBOSE setting and other rcS variables
[ -f /etc/default/rcS ] && . /etc/default/rcS

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

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 --pidfile $PIDFILE --make-pidfile \
                --chuid $USER --chdir $GEOSERVER_HOME \
                -b --test --exec $DAEMON -- $DAEMON_ARGS > /dev/null \
                || return 1

        start-stop-daemon --start --pidfile $PIDFILE --make-pidfile \
                --chuid $USER --chdir $GEOSERVER_HOME \
                -b --exec $DAEMON -- $DAEMON_ARGS \
                || return 2
}

do_stop(){

        # Return
        #   0 if daemon has been stopped
        #   1 if daemon was already stopped
        #   2 if daemon could not be stopped
        #   other if a failure occurred

        start-stop-daemon --stop --pidfile  $PIDFILE \
                --user $USER \
                --retry=TERM/30/KILL/5

        RETVAL="$?"
        [ "$RETVAL" = 2 ] && return 2

        # Many daemons don't delete their pidfiles when they exit.
        rm -f $PIDFILE
        return "$RETVAL"

}

case "$1" in
  start)
        [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
        do_start
        case "$?" in
                0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
                2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
        esac
        ;;
  stop)
        [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
        do_stop
        case "$?" in
                0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
                2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
        esac
        ;;
  restart|force-reload)
        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
        echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload}" >&2
        exit 3
        ;;
esac

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