#!/bin/sh
#
# /etc/init.d/possat-8080 -- startup script for the Tomcat servlet engine
#
# Modifications are:
#   * Remove authbind.
#   * Remove JVM_TMP. We will use CATALINA_BASE/temp
#   * Explicitly set JAVA_HOME. No need to figure out where it is.
#   * Remove SECURITY. We are not using the Java security manager.
#   * Remove references to DEFAULT. We have no defaults to use.
#   * Explicitly provide values for variables that are supposed to be set
#     while installing the tomcat package.
#   * Remove references to POLICY_CACHE.
#
### BEGIN INIT INFO
# Provides:          possat-8080
# 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 possat-8080.
# Description:       Start the possat-8080 servlet engine.
### END INIT INFO

set -e

PATH=/bin:/usr/bin:/sbin:/usr/sbin
NAME=possat-8080
DESC="Tomcat servlet engine"

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

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

. /lib/lsb/init-functions

if [ -r /etc/default/rcS ]; then
        . /etc/default/rcS
fi

# Run Tomcat as this user ID and group ID
TOMCAT8_USER=root
TOMCAT8_GROUP=root

export JAVA_HOME=/timeglobe/pos/runtime

# Directory where the Tomcat binary distribution resides
CATALINA_HOME=/timeglobe/pos/possat-8080

# Directory for per-instance configuration files and webapps
CATALINA_BASE=/timeglobe/pos/possat-8080

# 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 -server -Xms1024M -Xmx2048M"
fi

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

# pid file has to be in $CATALINA_BASE (or $CATALINA_HOME?)
CATALINA_PID="$CATALINA_BASE/tomcat.pid"

CATALINA_SH="$CATALINA_HOME/bin/catalina.sh"
CATALINA_TMPDIR="$CATALINA_BASE/temp"

# Look for Java Secure Sockets Extension (JSSE) JARs
if [ -z "${JSSE_HOME}" -a -r "${JAVA_HOME}/jre/lib/jsse.jar" ]; then
    JSSE_HOME="${JAVA_HOME}/jre/"
fi

catalina_sh() {
        # Escape any double quotes in the value of JAVA_OPTS
        JAVA_OPTS="$(echo $JAVA_OPTS | sed 's/\"/\\\"/g')"

        # Define the command to run Tomcat's catalina.sh as a daemon
        # set -a tells sh to export assigned variables to spawned shells.
        TOMCAT_SH="set -a; JAVA_HOME=\"$JAVA_HOME\"; \
                CATALINA_HOME=\"$CATALINA_HOME\"; \
                CATALINA_BASE=\"$CATALINA_BASE\"; \
                JAVA_OPTS=\"$JAVA_OPTS\"; \
                CATALINA_PID=\"$CATALINA_PID\"; \
                CATALINA_TMPDIR=\"$CATALINA_TMPDIR\"; \
                LANG=\"$LANG\"; JSSE_HOME=\"$JSSE_HOME\"; \
                cd \"$CATALINA_BASE\"; \
                \"$CATALINA_SH\" $@"

        # Run the catalina.sh script as a daemon
        set +e
        touch "$CATALINA_PID" "$CATALINA_BASE"/logs/catalina.out
        chown $TOMCAT8_USER "$CATALINA_PID" "$CATALINA_BASE"/logs/catalina.out
        start-stop-daemon --start -b -u "$TOMCAT8_USER" -g "$TOMCAT8_GROUP" \
                -c "$TOMCAT8_USER" -d "$CATALINA_TMPDIR" -p "$CATALINA_PID" \
                -x /bin/bash -- -c "$TOMCAT_SH"
        status="$?"
        set +a -e
        return $status
}

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

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

        log_daemon_msg "Starting $DESC" "$NAME"
        if start-stop-daemon --test --start --pidfile "$CATALINA_PID" \
                --user $TOMCAT8_USER --exec "$JAVA_HOME/bin/java" \
                >/dev/null; then

                catalina_sh start
                sleep 5
                if start-stop-daemon --test --start --pidfile "$CATALINA_PID" \
                        --user $TOMCAT8_USER --exec "$JAVA_HOME/bin/java" \
                        >/dev/null; then
                        if [ -f "$CATALINA_PID" ]; then
                                rm -f "$CATALINA_PID"
                        fi
                        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"

        set +e
        if [ -f "$CATALINA_PID" ]; then
                start-stop-daemon --stop --pidfile "$CATALINA_PID" \
                        --user "$TOMCAT8_USER" \
                        --retry=TERM/20/KILL/5 >/dev/null
                if [ $? -eq 1 ]; then
                        log_progress_msg "$DESC is not running but pid file exists, cleaning up"
                elif [ $? -eq 3 ]; then
                        PID="`cat $CATALINA_PID`"
                        log_failure_msg "Failed to stop $NAME (pid $PID)"
                        exit 1
                fi
                rm -f "$CATALINA_PID"
        else
                log_progress_msg "(not running)"
        fi
        log_end_msg 0
        set -e
        ;;
   status)
        set +e
        start-stop-daemon --test --start --pidfile "$CATALINA_PID" \
                --user $TOMCAT8_USER --exec "$JAVA_HOME/bin/java" \
                >/dev/null 2>&1
        if [ "$?" = "0" ]; then

                if [ -f "$CATALINA_PID" ]; then
                    log_success_msg "$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 $CATALINA_PID`"
        fi
        set -e
        ;;
  restart|force-reload)
        if [ -f "$CATALINA_PID" ]; then
                $0 stop
                sleep 1
        fi
        $0 start
        ;;
  try-restart)
        if start-stop-daemon --test --start --pidfile "$CATALINA_PID" \
                --user $TOMCAT8_USER --exec "$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
