#!/bin/sh
#
# mysql-mmm-monitor  This shell script takes care of starting and stopping
#                    the mmm monitoring daemon.
#
# chkconfig: - 64 36
# description:  MMM Monitor.
# processname: mmm_mond
# config: /etc/mysql-mmm/mmm_mon.conf
# pidfile: /var/run/mysql-mmm/mmm_mond.pid

# Source function library and defaults file.
. /etc/rc.d/init.d/functions
. /etc/default/mysql-mmm-monitor

# Cluster name (it can be empty for default cases)
CLUSTER=''
LOCKFILE='/var/lock/subsys/mysql-mmm-monitor'
prog='MMM Monitor Daemon'

if [ "$CLUSTER" != "" ]; then
        MMMD_MON_BIN="/usr/sbin/mmm_mond @$CLUSTER"
        MMMD_MON_PIDFILE="/var/run/mysql-mmm/mmm_mond-$CLUSTER.pid"
else 
        MMMD_MON_BIN="/usr/sbin/mmm_mond"
        MMMD_MON_PIDFILE="/var/run/mysql-mmm/mmm_mond.pid"
fi

start() {
        if [ "${ENABLED}" != "1" ]; then
                echo "$prog is disabled!"
                exit 1
        fi

        # ensure directories exist (/var/run and /var/lock 
        # are tmpfs since Fedora 15
        run_dir=$(dirname $MMMD_MON_PIDFILE)
        if [ ! -e "$run_dir" ]; then
            mkdir -p $run_dir
        fi

        echo -n "Starting $prog: "
        if [ -s $MMMD_MON_PIDFILE ] && kill -0 `cat $MMMD_MON_PIDFILE` 2> /dev/null; then
            echo " already running."
            exit 0
        fi
        daemon $MMMD_MON_BIN
        RETVAL=$?
        echo
        [ $RETVAL = 0 ] && touch $LOCKFILE
        return $RETVAL
}

stop() {
        # Stop daemon.
        echo -n "Stopping $prog: "
        killproc -p $MMMD_MON_PIDFILE $MMMD_MON_BIN
        RETVAL=$?
        echo
        [ $RETVAL = 0 ] && rm -f $LOCKFILE
        return $RETVAL
}

case "$1" in
  start)
        start
        ;;

  stop)
        stop
        ;;

  status)
        status -p $MMMD_MON_PIDFILE $MMMD_MON_BIN
        RETVAL=$?
        ;;

  restart|reload)
        stop
        start
        ;;

  condrestart)
        if [ -f $LOCKFILE ]; then
                stop
                start
        fi
        ;;
  *)
        echo "Usage: $0 {start|stop|restart|condrestart|status}"
        ;;
esac

exit $RETVAL