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#!/bin/sh
# /etc/init.d/nxlog: start the nxlog daemon.
# nxlog:       Starts the nxlog daemon
#
# chkconfig: 2345 12 78
# description: nxlog is a logging daemon
# processname: /usr/bin/nxlog
# config: /etc/nxlog.conf

### BEGIN INIT INFO
# Provides:             $syslog
# Required-Start:       $network $local_fs
# Required-Stop:        $network $local_fs
# Default-Start:        2 3 4 5
# Default-Stop:         0 1 6
# Short-Description:    logging daemon
### END INIT INFO

#TODO: lockfile

PATH=/bin:/usr/bin:/sbin:/usr/sbin

pidfile=/var/run/nxlog/nxlog.pid
nxlog=/usr/bin/nxlog

test -f $nxlog || exit 5

. /etc/init.d/functions

RETVAL=0

case "$1" in
  start)
    echo "Starting nxlog daemon..."
    umask 0022
    if ! [ -d /var/run/nxlog ]; then
        mkdir /var/run/nxlog
        chown nxlog:nxlog /var/run/nxlog
        chmod 1770 /var/run/nxlog
    fi
    # get the status
    $0 status >/dev/null
    my_stat=$?
    # if already running
    if [ $my_stat -eq 0 ]; then
        echo "nxlog is already running"
        RETVAL=1
    # try to start in all other cases
    else
        $nxlog
        if [ $? -eq 0 ]; then
          RETVAL=0
          echo "nxlog started!"
        else
          RETVAL=1
          echo "Failed to start nxlog!"
        fi
    fi
    ;;
  stop)
    echo "Stopping nxlog daemon..."
    # get the status
    $0 status >/dev/null
    my_stat=$?
    # do nothing if not running
    if [ $my_stat -eq 3 ]; then
        RETVAL=7
        echo "nxlog is not running"
    # try to stop in any other cases
    else
        $nxlog -s
        if [ $? -eq 0 ]; then
             RETVAL=0
             echo "nxlog stopped"
        else
             RETVAL=1
             echo "Failed to stop nxlog"
        fi
    fi
    ;;
  reload)
    echo "Reloading nxlog daemon..."
    # get the status
    $0 status >/dev/null
    my_stat=$?
    # return 7 if not running
    if [ $my_stat -eq 3 ]; then
        RETVAL=7
        echo "nxlog is not running"
    # in all other cases try to reload
    else
        $nxlog -r
        if [ $? -eq 0 ]; then
            RETVAL=0
            echo "nxlog reloaded"
        else
            RETVAL=1
            echo "Failed to reload nxlog"
        fi
    fi
    ;;
  status)
    # if running fine
    if [ -f $pidfile ] && ps $(<$pidfile) >/dev/null; then
        RETVAL=0
        echo "nxlog is running"
    # if pidfile exists, but not running
    elif [ -f $pidfile ]; then
        RETVAL=1
        echo "nxlog is not running but pidfile exists"
    # running, but no pidfile, return value not defined
    elif [ ! -f $pidfile ] && ps aux | grep -v grep | grep -q $nxlog; then
        RETVAL=4
        echo "nxlog is running, but no pidfile exists"
    # not running, and no pidfile
    else
        RETVAL=3
        echo "nxlog is not running"
    fi
    ;;
  restart|force-reload)
    echo "Restarting nxlog daemon..."
    # get the current status
    $0 status >/dev/null
    my_stat=$?
    # if not running
    if [ $my_stat -eq 3 ]; then
        $0 start
        if [ $? -eq 0 ]; then
            echo "nxlog restarted"
            RETVAL=0
        else
            echo "Failed to restart nxlog"
            RETVAL=1
        fi
    # if running, or unknown status
    elif [ $my_stat -eq 0 ] || [ $my_stat -eq 4 ]; then
        $0 stop || exit 1
        $0 start
        if [ $? -eq 0 ]; then
            echo "nxlog restarted"
            RETVAL=0
        else
            echo "Failed to restart nxlog"
            RETVAL=1
        fi
    # if dead and pidfile exists
    elif [ $my_stat -eq 1 ]; then
      rm -rf $pidfile
      $0 start
      if [ $? -eq 0 ]; then
            echo "nxlog restarted"
            RETVAL=0
        else
            echo "Failed to restart nxlog"
            RETVAL=1
        fi
    fi
    ;;
  *)
    failure "Usage: /etc/init.d/nxlog {start|stop|status|restart|force-reload}"
    exit 1
esac

exit $RETVAL