druid-server.initscript.source

#!/bin/bash
#

# Source function library.
. /etc/init.d/functions
RETVAL=0

DRUID_USER=druid
PID_FILE="/var/run/druid/druid-server.pid"
DRUID_HOME="/usr/lib/druid"
DRUID_CONF="/etc/druid/"
CLASSPATH="$DRUID_HOME/*:$DRUID_CONF"
LOG_DIR="/var/log/druid"

. $DRUID_CONF/druid-env.sh

start() {
    pid=$(ps ax | grep druid | grep realtime | grep -v grep | awk '{print $1}')
    if [ "$pid" != "" ]; then
        echo "Druid server is already running."
        exit 0
    else
        echo "Starting Druid server..."
    fi

    DRUID_CMD="java $DRUID_HEAP_OPTS $DRUID_OPTS $DRUID_SPEC_OPTS -Duser.timezone=UTC -Dfile.encoding=UTF-8 -classpath $CLASSPATH io.druid.cli.Main server realtime"
    $DRUID_CMD >> $LOG_DIR/druid-server.out 2>&1 &
    RETVAL=$?
    if [ $RETVAL == 0 ]; then
        ps ax | grep druid | grep realtime | grep -v grep | awk '{print $1}' > $PID_FILE
    fi
    status
    return $RETVAL
}

stop() {
    if status; then
        echo "Stopping Druid server..."
        killproc -p $PID_FILE -TERM
        RETVAL=$?
        status
    else
        return 0
    fi
    return $RETVAL
}

status() {
    pid=$(< $PID_FILE)
    if [ "$pid" = '' ]; then
        return 0
    fi
    return 1
}

restart() {
    stop
    start
}

reload()  {
    restart
}

case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  status)
        status
        ;;
  restart)
        restart
        ;;
  reload)
        reload
        ;;
  *)
        echo $"Usage: $0 {start|stop|status|restart}"
        exit 2
esac

exit $?