#! /bin/bash

### BEGIN INIT INFO

# Provides:          memcached

# Required-Start:    $syslog

# Required-Stop:     $syslog

# Should-Start:        $local_fs

# Should-Stop:        $local_fs

# Default-Start:     2 3 4 5

# Default-Stop:      0 1 6

# Short-Description:    memcached - Memory caching daemon

# Description:        memcached - Memory caching daemon

### END INIT INFO

# Usage:

# cp /etc/memcached.conf /etc/memcached_server1.conf

# cp /etc/memcached.conf /etc/memcached_server2.conf

# start all instances:

# /etc/init.d/memcached start

# start one instance:

# /etc/init.d/memcached start server1

# stop all instances:

# /etc/init.d/memcached stop

# stop one instance:

# /etc/init.d/memcached stop server1

# There is no "status" command.

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

DAEMON=/usr/bin/memcached

DAEMONNAME=memcached

DAEMONBOOTSTRAP=/usr/share/memcached/scripts/start-memcached

DESC=memcached

test -x $DAEMON || exit 0

test -x $DAEMONBOOTSTRAP || exit 0

set -e

FILES=(/etc/memcached_*.conf)

# check for alternative config schema

if [ -r "${FILES[0]}" ]; then

  CONFIGS=()

  for FILE in "${FILES[@]}";

  do

    # remove prefix

    NAME=${FILE#/etc/}

    # remove suffix

    NAME=${NAME%.conf}

    # check optional second param

    if [ $# -ne 2 ];

    then

      # add to config array

      CONFIGS+=($NAME)

    elif [ "memcached_$2" == "$NAME" ];

    then

      # use only one memcached

      CONFIGS=($NAME)

      break;

    fi;

  done;

  if [ ${#CONFIGS[@]} == 0 ];

  then

    echo "Config not exist for: $2" >&2

    exit 1

  fi;

else

  CONFIGS=(memcached)

fi;

CONFIG_NUM=${#CONFIGS[@]}

for ((i=0; i < $CONFIG_NUM; i++)); do

  NAME=${CONFIGS[${i}]}

  PIDFILE="/var/run/${NAME}.pid"

case "$1" in

    start)

        echo -n "Starting $DESC: "

        start-stop-daemon --start --quiet --exec "$DAEMONBOOTSTRAP" -- /etc/${NAME}.conf $PIDFILE

        echo "$NAME."

        ;;

    stop)

        echo -n "Stopping $DESC: "

        start-stop-daemon --stop --quiet --oknodo --pidfile $PIDFILE --exec $DAEMON

        echo "$NAME."

        rm -f $PIDFILE

        ;;

    status)

        [ $# -lt 2 ] && NAME=$DAEMONNAME

        PIDFILE="/var/run/$NAME.pid"

        set +e

        start-stop-daemon --status --pidfile $PIDFILE

        case $? in

            0) echo "$DESC: $NAME (pid $(cat $PIDFILE)) is running" && exit 0;;

            1) echo "$DESC: $NAME is not running thro' the pid file exists" && rm -f $PIDFILE && exit 1;;

            3) echo "$DESC: $NAME is not running" && exit 3;;

            4) echo "$DESC: $NAME status is unclear, sorry" && exit 4;;

        esac

        ;;

    restart|force-reload)

    #

    #   If the "reload" option is implemented, move the "force-reload"

    #   option to the "reload" entry above. If not, "force-reload" is

    #   just the same as "restart".

    #

        echo -n "Restarting $DESC: "

        start-stop-daemon --stop --quiet --oknodo --pidfile $PIDFILE

        rm -f $PIDFILE

        sleep 1

        start-stop-daemon --start --quiet --exec "$DAEMONBOOTSTRAP" -- /etc/${NAME}.conf $PIDFILE

        echo "$NAME."

        ;;

    *)

        N=/etc/init.d/$NAME

    # echo "Usage: $N {start|stop|restart|reload|force-reload}" >&2

        echo "Usage: $N {start|stop|status|restart|force-reload}" >&2

        exit 1

        ;;

esac

done;

exit 0