#!/bin/sh
# nds-sanit	Manage NDS processes for Sanat.
# 
# chkconfig:    2345 95 20
#
# description: 	python/fastcgi processes for NDS-sanit
# 
# processname: 	nds-sanit

# source function library
. /etc/rc.d/init.d/functions

PROJNAME='nds-sanit/fastcgi'
ADDRESS='127.0.0.1'
SERVER_PORT='8765'

# NB: don't forget to change pidfile if copying this for a new config.
SERVER_PID="/home/path/to/proj/dir/sanit-pidfile.pid"

# Project's virtualenv
ENVLOC="/home/USER/env/"
PROJECTLOC="/home/path/to/proj/dir/"
MANAGELOC="$PROJECTLOC/manage.py"

# Config file associated with the instance

NDS_CONFIG="$PROJECTLOC/configs/sanit.config.yaml"

BASE_CMD="$ENVLOC/bin/python $MANAGELOC runfcgi --method=prefork --host=$ADDRESS --port=$SERVER_PORT --pidfile=$SERVER_PID --daemonize"

RETVAL=0

if [[ "$USER" == "neahtta" ]]
then
    DAEMONIZE="daemon "
else
    DAEMONIZE="daemon --user=neahtta "
fi

DAEMON_BASE_CMD="$DAEMONIZE$BASE_CMD"

start_server () {
  if [ -f $1 ]; then
    #pid exists, check if running
    if [ "$(ps -p `cat $1` | wc -l)" -gt 1 ]; then
  	action $"Starting $PROJNAME -- ${ADDRESS}:${2}..." /bin/false
       echo -n " * Server already running on ${ADDRESS}:${2}"
       return
    fi
  fi
  cd $PROJECTLOC
  . $ENVLOC/bin/activate
  export NDS_CONFIG=$NDS_CONFIG
  $DAEMON_BASE_CMD && success || failure
  RETVAL=$?
  echo -n $"Starting $PROJNAME -- ${ADDRESS}:${2}..." $?
  echo
}

restart_server () {
  PID=`cat $1`
  kill -1 $PID
  action $"Sending SIGHUP to $PROJNAME -- ${ADDRESS}:${2}..." /bin/true
}

stop_server (){
  if [ -f $1 ] && [ "$(ps -p `cat $1` | wc -l)" -gt 1 ]; then
    kill `cat $1`
    rm $1
    export NDS_CONFIG=''
    action $"Stopping $PROJNAME -- ${ADDRESS}:${2}..." /bin/true
  else 
    action $"Stopping $PROJNAME -- ${ADDRESS}:${2}..." /bin/false
    if [ -f $1 ]; then
      echo -n " * Server ${ADDRESS}:${2} not running"
    else
      echo -n " * No pid file found for server ${ADDRESS}:${2}"
    fi
  fi
}

case "$1" in
'start')
  start_server $SERVER_PID $SERVER_PORT 
  ;;
'stop')
  stop_server $SERVER_PID $SERVER_PORT
  ;;
'restart')
  stop_server $SERVER_PID $SERVER_PORT
  sleep 2
  start_server $SERVER_PID $SERVER_PORT 
  ;;
*)
  echo -n "Usage: $0 { start | stop | restart }"
  ;;
esac

exit $RETVAL