#!/bin/sh
#
# /etc/init.d/ringojs -- startup script for the Ringo JavaScript runtime
#
# Written by Miquel van Smoorenburg <miquels@cistron.nl>.
# Modified for Debian GNU/Linux by Ian Murdock <imurdock@gnu.ai.mit.edu>.
# Modified for Tomcat by Stefan Gybas <sgybas@debian.org>.
# Modified for Tomcat6 by Thierry Carrez <thierry.carrez@ubuntu.com>.
# Modified for RingoJS by Hannes Wallnoefer <hannes@helma.at>.
#
### BEGIN INIT INFO
# Provides:          ringojs
# Required-Start:    $local_fs $remote_fs $network
# Required-Stop:     $local_fs $remote_fs $network
# Should-Start:      $named
# Should-Stop:       $named
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start RingoJS
# Description:       Start RingoJS
### END INIT INFO

set -e

PATH=/bin:/usr/bin:/sbin:/usr/sbin
NAME=ringojs
DESC="Ringo JavaScript runtime"
DAEMON=/usr/bin/jsvc
RINGO_HOME=/usr/share/$NAME
DEFAULT=/etc/default/$NAME
# direct both stdout and stderr to ringo-out.log
RINGO_OUT=/var/log/ringojs/ringo-out.log
RINGO_ERR="&1"
# fix for Rhino on bootclasspath in OpenJDK
RHINO_CLASSPATH=-Xbootclasspath/p:/usr/share/ringojs/lib/js.jar

if [ `id -u` -ne 0 ]; then
    echo "You need root privileges to run this script"
    exit 1
fi

# Make sure ringo is started with system locale
if [ -r /etc/default/locale ]; then
    . /etc/default/locale
    export LANG
fi

. /lib/lsb/init-functions
. /etc/default/rcS


# The following variables can be overwritten in $DEFAULT

# Run Ringo as this user ID
RINGO_USER=ringojs

# Run this application
RINGO_APPLICATION=modules/ringo/webapp/daemon.js

# Arguments to pass to RingoJS runtime
RINGO_OPTS=""

# Arguments to pass to the application script
APPLICATION_OPTS=""

# Set the RingoJS module search path
RINGO_MODULE_PATH=apps/demo
export RINGO_MODULE_PATH

# The first existing directory is used for JAVA_HOME (if JAVA_HOME is not
# defined in $DEFAULT)
JDK_DIRS="/usr/lib/jvm/java-6-sun /usr/lib/jvm/java-6-openjdk /usr/lib/jvm/java-1.5.0-sun /usr/lib/j2sdk1.5-sun /usr/lib/j2sdk1.5-ibm"

# Look for the right JVM to use
for jdir in $JDK_DIRS; do
    if [ -r "$jdir/bin/java" -a -z "${JAVA_HOME}" ]; then
        JAVA_HOME="$jdir"
    fi
done
export JAVA_HOME

# Directory for per-instance configuration files and webapps
RINGO_BASE=/usr/share/$NAME

# Default Java options
# Set java.awt.headless=true if JAVA_OPTS is not set so the
# Xalan XSL transformer can work without X11 display on JDK 1.4+
# It also looks like the default heap size of 64M is not enough for most cases
# so the maximum heap size is set to 128M
if [ -z "$JAVA_OPTS" ]; then
    JAVA_OPTS="-Djava.awt.headless=true -Xmx128M"
fi

# End of variables that can be overwritten in $DEFAULT

# overwrite settings from default file
if [ -f "$DEFAULT" ]; then
    . "$DEFAULT"
fi

if [ ! -f "$RINGO_HOME/run.jar" ]; then
    log_failure_msg "$NAME is not installed"
    exit 1
fi

if [ ! -f "$DAEMON" ]; then
    log_failure_msg "missing $DAEMON"
    exit 1
fi

JAVA_OPTS="$JAVA_OPTS "-Dringo.home="$RINGO_HOME"

# Set logging.properties if provided
if [ -r "$RINGO_BASE"/config/log4j.properties ]; then
    JAVA_OPTS="$JAVA_OPTS "-Dlog4j.configuration="$RINGO_BASE/config/log4j.properties"
fi

# Define other required variables
RINGO_PID="/var/run/$NAME.pid"
BOOTSTRAP_CLASS=org.ringojs.tools.launcher.Main
JSVC_CLASSPATH="/usr/share/java/commons-daemon.jar:$RINGO_HOME/run.jar"

case "$1" in
  start)
    if [ -z "$JAVA_HOME" ]; then
        log_failure_msg "no JDK found - please set JAVA_HOME"
        exit 1
    fi

    if [ ! -d "$RINGO_BASE" ]; then
        log_failure_msg "invalid RINGO_BASE: $RINGO_BASE"
        exit 1
    fi

    log_daemon_msg "Starting $DESC" "$NAME"
    if start-stop-daemon --test --start --pidfile "$RINGO_PID" \
        --user $RINGO_USER --startas "$JAVA_HOME/bin/java" \
        >/dev/null
    then
        cd "$RINGO_BASE"
        $DAEMON $RHINO_CLASSPATH -cp "$JSVC_CLASSPATH" \
            -user "$RINGO_USER" -outfile "$RINGO_OUT" -errfile "$RINGO_ERR" \
            -pidfile "$RINGO_PID" $JAVA_OPTS "$BOOTSTRAP_CLASS" \
            $RINGO_OPTS "$RINGO_APPLICATION" $APPLICATION_OPTS
        sleep 1

        if start-stop-daemon --test --start --pidfile "$RINGO_PID" \
            --user $RINGO_USER --startas "$JAVA_HOME/bin/java" \
            >/dev/null
        then
            log_end_msg 1
        else
            log_end_msg 0
        fi
    else
        log_progress_msg "(already running)"
        log_end_msg 0
    fi
    ;;
  stop)
    log_daemon_msg "Stopping $DESC" "$NAME"
    if start-stop-daemon --test --start --pidfile "$RINGO_PID" \
        --user "$RINGO_USER" --startas "$JAVA_HOME/bin/java" \
        >/dev/null
    then
        log_progress_msg "(not running)"
    else
        $DAEMON $RHINO_CLASSPATH -cp "$JSVC_CLASSPATH" \
             -pidfile "$RINGO_PID" -stop "$BOOTSTRAP_CLASS"
    fi
    log_end_msg 0
    ;;
  status)
    if start-stop-daemon --test --start --pidfile "$RINGO_PID" \
        --user $RINGO_USER --startas "$JAVA_HOME/bin/java" \
        >/dev/null
    then
        if [ -f "$RINGO_PID" ]; then
            log_success_msg "$DESC is not running, but pid file exists."
            exit 1
        else
            log_success_msg "$DESC is not running."
            exit 3
        fi
    else
        log_success_msg "$DESC is running with pid `cat $RINGO_PID`"
    fi
    ;;
  restart|force-reload)
    if start-stop-daemon --test --stop --pidfile "$RINGO_PID" \
        --user $RINGO_USER --startas "$JAVA_HOME/bin/java" \
        >/dev/null
    then
        $0 stop
        sleep 1
    fi
    $0 start
    ;;
  try-restart)
    if start-stop-daemon --test --start --pidfile "$RINGO_PID" \
        --user $RINGO_USER --startas "$JAVA_HOME/bin/java" \
        >/dev/null
    then
        $0 start
    fi
    ;;
  *)
    log_success_msg "Usage: $0 {start|stop|restart|try-restart|force-reload|status}"
    exit 1
    ;;
esac

exit 0