#!/bin/bash
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. The ASF licenses this file to You
# under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License. For additional information regarding
# copyright in this work, please see the NOTICE file in the top level
# directory of this distribution.
#


# Starts and stops chop web application.

NAME=chop-webapp
PIDFILE=/var/run/$NAME/$NAME.pid
DESC="Chop Webapp"
CMD_PATT="chop-webapp"
LOGFILE=/var/log/chop-webapp.log
. /lib/lsb/init-functions

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

if [ "x$CHOP_HOME" = "x" ]; then
    CHOP_HOME=/opt/chop
fi

is_running()
{
    if [ -f $PIDFILE ]; then
        pid=`cat $PIDFILE`
        grep -Eq "$CMD_PATT" "/proc/$pid/cmdline" 2>/dev/null && return 0
        return 1
    fi
    return 3
}

case "$1" in
start)
        is_running
        stat=$?
        case "$stat" in
                0) echo $DESC "is already running..." ;;
                1) echo "Could not access pidfile for $DESC" ;;
                *)
                echo "Starting "$DESC" ... "
                [ -e `dirname "$PIDFILE"` ] || \
                        install -d -m755 `dirname $PIDFILE`
                DAEMON="/usr/bin/java"
                ARGS=" -jar -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005 $CHOP_HOME/webapp/chop-webapp-2.0.0-SNAPSHOT-shaded.jar -e -d /var/lib/elasticsearch"
		start-stop-daemon --start --quiet --make-pidfile --pidfile "$PIDFILE" --background  --exec /bin/bash -- -c "exec ${DAEMON} ${ARGS} > ${LOGFILE} 2>&1"
	;;
        esac
;;

stop)
        is_running
        stat=$?
        case "$stat" in
        0)
                echo "Stopping" $DESC
                echo "PID: " $PIDFILE
                start-stop-daemon -K -p "$PIDFILE" -R TERM/30/KILL/5 >/dev/null
                rm -f "$PIDFILE";;
        1) echo "Could not access pidfile for $DESC" ;;
        *) echo $DESC" is not running..." ;;
        esac
;;

restart)
        $0 stop
        $0 start
;;

status)
        is_running
        stat=$?
        case "$stat" in
                0) log_success_msg "$DESC is running" ;;
                1) log_failure_msg "could not access pidfile for $DESC" ;;
                *) log_success_msg "$DESC is not running" ;;
        esac
        exit "$stat"
;;
kill)
        start-stop-daemon -K -p "$PIDFILE" -R TERM/30/KILL/5 >/dev/null
        rm -f "$PIDFILE"
        echo $DESC "is killed..."
;;
*)
        echo "Usage: $0 {start|stop|restart|status|kill}"
        exit 1
esac