Synnefo

#!/bin/sh

### BEGIN INIT INFO

# Provides:		  snf-dispatcher

# Required-Start:	$remote_fs $syslog

# Required-Stop:	 $remote_fs $syslog

# Default-Start:	 2 3 4 5

# Default-Stop:	  0 1 6

# Short-Description: Synnefo dispatcher daemon

# Description:	   Dispatcher is a daemon for the synnefo middleware logic layer

### END INIT INFO

# Do NOT "set -e",

# Per Debian Policy Manual, section: System run levels and init.d scripts

# set -e

# /etc/init.d/snf-dispatcher: start and stop the dispatcher daemon

DAEMON=/usr/bin/snf-dispatcher

NAME="snf-dispatcher"

DESCRIPTION="Synnefo Dispatcher Daemon"

DAEMON_OPTS=''

DAEMON_DEFAULTS_FILE=/etc/default/$NAME

RUNDIR=/var/run/synnefo

PIDFILE=$RUNDIR/$NAME.pid

SCRIPTNAME=/etc/init.d/$NAME

# Exit if the package is not installed

[ -x "$DAEMON" ] || exit 0

# Read defaults file if it is present

[ -r "$DAEMON_DEFAULTS_FILE" ] && . $DAEMON_DEFAULTS_FILE

# Load LSB functions

. /lib/lsb/init-functions

check_config()

{

    # Check Configuration file

    if [ -r $DAEMON_DEFAULTS_FILE ]; then

        # Load extra daemon options

        DAEMON_OPTS=$SNF_DSPTCH_OPTS" -p $PIDFILE"

        # Check the 'ENABLE" value

        case "x$SNF_DSPTCH_ENABLE" in

          xtrue|xfalse)	;;

          *)

            log_failure_msg "Value of SNF_DSPTCH_ENABLE in $DAEMON_DEFAULTS_FILE must be either 'true' or 'false';"

            log_failure_msg "not starting $NAME daemon."

            exit 1

            ;;

        esac

    else

        log_warning_msg "$NAME default file $DAEMON_DEFAULTS_FILE is missing"

    fi

}

export PATH="${PATH:+$PATH:}/usr/sbin:/sbin"

do_start() {

	# Ensure the directory containing the pidfile exists

	# and has the right permissions

    # Return

    #   0 if daemon has been started

    #   1 if daemon was already running

    #   2 if daemon could not be started

    #   3 if daemon is not configured to start

    mkdir -p $RUNDIR

    chown $SNF_USER $RUNDIR

    chmod 0755 $RUNDIR

    check_config

	if "$SNF_DSPTCH_ENABLE"; then

            if [ -s $PIDFILE ] && kill -0 $(cat $PIDFILE) >/dev/null 2>&1; then

              return 1

            else

              SNF_USER=${SNF_USER:-root}

              start-stop-daemon --start --chuid $SNF_USER --exec $DAEMON --pidfile $PIDFILE -- $DAEMON_OPTS || return 2

              sleep 1

              if [ ! -s $PIDFILE ] || ! kill -0 $(cat $PIDFILE) >/dev/null 2>&1; then

                log_warning_msg "$NAME daemon failed to start"

                return 2

              fi

            fi

    else

	  log_warning_msg "$NAME not enabled in $DAEMON_DEFAULTS_FILE, not starting."

      return 3

    fi

}

do_stop() {

    # Return

    # 0 if daemon has been stopped

    # 1 if daemon was already stopped

    # 2 if deamon could not be stopped

    # other if failure occured

    start-stop-daemon --stop --quiet --pidfile $PIDFILE --retry=TERM/30/KILL/5

    return $?

}

case "$1" in

  start)

    log_daemon_msg "Starting $DESCRIPTION" "$NAME"

    do_start

    case "$?" in

      0|3) log_end_msg 0 ;;

      1) log_progress_msg "Apparently already running" && log_end_msg 0;;

      2) log_end_msg 1 ;;

    esac

    ;;

  stop)

    log_daemon_msg "Stoping $DESCRIPTION" "$NAME"

    do_stop

    case "$?" in

      0|1) log_end_msg 0 ;;

      2) log_end_msg 1 ;;

    esac

	;;

  status)

	status_of_proc -p $PIDFILE $DAEMON $NAME && exit 0 || exit $?

	;;

  restart|force-reload)

    log_daemon_msg "Restarting $DESCRIPTION" "$NAME"

    do_stop

    case "$?" in

      0|1)

        do_start

        case "$?" in

          0) log_end_msg 0 ;;

          *) log_end_msg 1 ;;  # Old process stil running or failed to start

        esac

        ;;

      *)

        # Failed to stop

        log_end_msg 1

        ;;

    esac

	;;

  *)

	echo "Usage: /etc/init.d/snf-dispatcher {start|stop|status|restart|force-reload}" >&2

	exit 3

    ;;

esac