#!/bin/sh
#
# hst-server   Start Hortonworks Smartsense Tool
#
# chkconfig: 2345 08 92
# description:  Start, stops and edit Hortonworks Smartsense Tool infos
#
# config: /etc/hst/conf
#
### BEGIN INIT INFO
# Provides: iptables
# Required-Start:
# Required-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: start and stop smartsense tool
# Description: Start, stop and save smartsense tool
### END INIT INFO

NAME='SmartSense Server'
USER={{user}}
PID_FILE='{{pid_dir}}/hst-server.pid'
KILL_FORCE=0
KILL_SLEEP=10
HST_AGENT=hst-agent
HST_SERVER=hst-server
HST_PY_PATH=/usr/hdp/share/hst/hst-agent/lib
HST_AGENT_SCRIPTS_PATH=/var/lib/smartsense/hst-agent/resources/scripts:/var/lib/smartsense/hst-agent/updates/download/patch
PYTHONPATH=/var/lib/smartsense/hst-agent/resources/scripts:/var/lib/smartsense/hst-agent/updates/download/patch:/usr/hdp/share/hst/hst-agent/lib:/usr/hdp/share/hst/hst-agent/lib/hst_agent:$HST_AGENT_SCRIPTS_PATH:$HST_PY_PATH:$HST_PY_PATH/hst_agent:$PYTHONPATH

function start {
  if [ -f $PID_FILE ]; then
    pid=`cat $PID_FILE`
    if kill -0 $pid >/dev/null 2>&1 $pid; then
       echo "$NAME already running [$pid]"
       exit 0
    else
      rm -rf $PID_FILE
    fi
  fi
  rm -rf  /var/lib/smartsense/hst-server/updates/upload/patch
  /usr/sbin/hst start
  # eval "su -l $USER -c \"export PYTHONPATH=$PYTHONPATH ;rm -f /var/lib/smartsense/hst-server/updates/upload/patch/etc/hst/conf/*;/usr/sbin/hst-server.py start\""
  echo "$NAME running [`cat $PID_FILE`]"
}

function stop {
  if [ ! -f $PID_FILE ]; then
    echo "$NAME already stopped"
    return
  fi
  pid=$(<$PID_FILE)
  kill $pid 2>/dev/null
  i=0
  /usr/sbin/hst stop
  # eval "su -l $USER -c \"export PYTHONPATH=$PYTHONPATH ;/usr/sbin/hst-server.py stop\""
  # eval $CMD
  while kill -0 $pid 2>dev/null && [ $i -lt $KILL_SLEEP ]; do
    (( i++ ))
    sleep 1
  done
  if ! kill -0 $pid 2>dev/null; then
    rm $PID_FILE 2>/dev/null || true
    echo "$NAME stopped"
    return
  fi
  force_stop
}

function force_stop {
  pid=$(<$PID_FILE)
  kill -9 $pid 2>/dev/null
  sleep 1
  if kill -0 $pid; then
    echo "$NAME failed to stop"
    exit 1
  fi
  rm $PID_FILE
  echo "$NAME forced stopped after ${KILL_SLEEP}s"
}

function status {
  if [ -f $PID_FILE ]; then
    pid=`cat $PID_FILE`
    if kill -0 >/dev/null 2>&1 $pid; then
       echo "$NAME started [$pid]"
       exit 0
    fi
  fi
  echo "$NAME stopped"
  exit 3
}

case "$*" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  status)
        status
        exit $?
        ;;
  restart)
        $0 stop
        $0 start
        ;;
  *)
        echo "Usage for HST Server: $0 {start|stop|status|restart}"
        exit 1
esac

exit 0