Aquarium

#!/usr/bin/env bash

#

# Copyright 2012 GRNET S.A. All rights reserved.

#

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions

# are met:

#

#   1. Redistributions of source code must retain the above copyright

#      notice, this list of conditions and the following disclaimer.

#

#  2. Redistributions in binary form must reproduce the above copyright

#     notice, this list of conditions and the following disclaimer in the

#     documentation and/or other materials provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

# ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

# SUCH DAMAGE.

#

# The views and conclusions contained in the software and documentation are

# those of the authors and should not be interpreted as representing official

# policies, either expressed or implied, of GRNET S.A.

#

# Init script for Aquarium

#

#-----------------------

# Supported environment variables

#

# JAVA_OPTS       Runtime options for the JVM that runs Aquarium

#                 (default: -Xms1024M -Xmx4096M)

#

# AQUARIUM_PROP   Java system properties understood by Aquarium

#                 (default: -Dlog4j.debug=true)

#

# AQUARIUM_OPTS   Runtime options for Aquarium

#                 (default: "")

#

# AQUARIUM_HOME   Location of the top level Aquarium dir

#                 (default: .)

#----------------------

#set -x

# resolve links - $0 may be a softlink

PRG="$0"

while [ -h "$PRG" ]; do

  ls=`ls -ld "$PRG"`

  link=`expr "$ls" : '.*-> \(.*\)$'`

  if expr "$link" : '/.*' > /dev/null; then

    PRG="$link"

  else

    PRG=`dirname "$PRG"`/"$link"

  fi

done

# Get standard environment variables

PRGDIR=`dirname "$PRG"`

# Only set supported environment variables if not already set

[ -z "$AQUARIUM_HOME" ] && AQUARIUM_HOME=`cd "$PRGDIR/.." >/dev/null; pwd`

[ -z "$AQUARIUM_PROP" ] && AQUARIUM_PROP=""

[ -z "$AQUARIUM_OPTS" ] && AQUARIUM_OPTS=""

[ -z "$JAVA_OPTS" ]     && JAVA_OPTS="-Xms1024M -Xmx4096M"

export AQUARIUM_HOME

PID_FILE=$AQUARIUM_HOME/bin/aquarium.pid

AQUARIUM_LIB=$AQUARIUM_HOME/lib

AQUARIUM_CONF=$AQUARIUM_HOME/conf

AQUARIUM_LOGFILE=$AQUARIUM_HOME/logs/aquarium.log

AQUARIUM_MAIN_CLASS=gr.grnet.aquarium.Main

# We use jbootstrap to start the application.

# No need to manually setup the CLASSPATH

JBOOT_JAR=$AQUARIUM_LIB/jbootstrap-3.0.0.jar

JBOOT_MAIN_CLASS=com.ckkloverdos.jbootstrap.Main

# Check the application status

check_status() {

    if [ -f $PID_FILE ]

    then

        aqrunning=`ps -ef|grep java|grep $AQUARIUM_MAIN_CLASS`

        if [ -z "$aqrunning" ]

        then

            return 0

            echo "Aquarium running, but no pid file found"

        else

            return 1

        fi 

    else

       return 0

    fi

    return 1

}

# Starts the application. If "debug" is passed as argument, aquarium starts

# in debug mode

start() {

    check_status

    if [ $? -ne 0 ]

    then

        echo "Aquarium is running"

        exit 1

    fi

    echo "Starting Aquarium"

    CLASSPATH=$JBOOT_JAR

    echo "Using initial CLASSPATH $CLASSPATH"

    echo "Using AQUARIUM_HOME $AQUARIUM_HOME"

    echo "Using MAIN $AQUARIUM_MAIN_CLASS"

    echo "Using AQUARIUM_PROP $AQUARIUM_PROP"

    echo "Using JAVA_OPTS $JAVA_OPTS"

    echo "nohup java $JAVA_OPTS -cp $CLASSPATH $AQUARIUM_PROP $JBOOT_MAIN_CLASS -lib $AQUARIUM_LIB $AQUARIUM_MAIN_CLASS > $AQUARIUM_LOGFILE"

    nohup java $JAVA_OPTS -cp $CLASSPATH $AQUARIUM_PROP $JBOOT_MAIN_CLASS -lib $AQUARIUM_LIB $AQUARIUM_MAIN_CLASS > $AQUARIUM_LOGFILE 2>&1 &

    echo $! > $PID_FILE

    echo "OK [pid = "`cat $PID_FILE`"]"

}

# Stops the application

stop() {

    check_status

    if [ $? -eq 0 ]

    then

        echo "Aquarium is not running"

        exit 1

    fi

    # Kills the application process

    echo -n "Stopping Aquarium: "

    kill `cat $PID_FILE`

    rm $PID_FILE

    echo "OK"

}

# Show the application status

status() {

    check_status

    if [ $? -ne 0 ]

    then

        echo "Aquarium is running (pid="`cat $PID_FILE`")"

    else

        echo "Aquarium is stopped"

    fi

}

ps_aquarium() {

  ps -ef | grep java | grep gr.grnet.aquarium.Main

}

forcekill() {

  local PIDS=`ps_aquarium | awk '{print $2}'`

  for pid in $PIDS; do

    echo Killing $pid

    kill -9 $pid

  done

}

# Main logic, a simple case to call functions

case "$1" in

  start)

    start

    ;;

  stop)

    stop

    ;;

  status)

    status

    ;;

  restart)

    stop

    start

    ;;

  ps)

    ps_aquarium

    ;;

  forcekill)

    forcekill

    ;;

  *)

      echo "Usage: $0 {start|stop|restart|status|ps|forcekill}"

      exit 1

    esac

exit 0

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