#!/bin/sh

# pgpool    This is the init script for starting up pgpool-II

#

# chkconfig: - 64 36

# description: Starts and stops the pgpool daemon

# processname: pgpool

# pidfile:	/var/run/pgpool.pid

#

# v1.0.0 Devrim GUNDUZ <devrim@CommandPrompt.com>

# - Initial version of Red Hat / Fedora init script

#

# v2.2 Devrim GUNDUZ <devrim@CommandPrompt.com>

# - New and improved version which has some fixes.

#

# v2.2.5 Devrim GUNDUZ <devrim@CommandPrompt.com>

# - Fix logging.

if [ -r /etc/sysconfig/pgpool ]; then

    . /etc/sysconfig/pgpool

fi

# Source function library.

INITD=/etc/rc.d/init.d

. $INITD/functions

# Get function listing for cross-distribution logic.

TYPESET=`typeset -f|grep "declare"`

# Get config.

. /etc/sysconfig/network

# Check that networking is up.

# We need it for pgpool

[ "${NETWORKING}" = "no" ] && exit 0

# Find the name of the script

NAME=`basename $0`

if [ ${NAME:0:1} = "S" -o ${NAME:0:1} = "K" ]

then

	NAME=${NAME:3}

fi

# For SELinux we need to use 'runuser' not 'su'

if [ -x /sbin/runuser ]

then

    SU=runuser

else

    SU=su

fi

# Set defaults for configuration variables

PGPOOLENGINE=/usr/bin

PGPOOLDAEMON=$PGPOOLENGINE/pgpool

PGPOOLCONF=/etc/pgpool-II/pgpool.conf

PGPOOLPIDDIR=/var/run/pgpool

PGPOOLLOG=/var/log/pgpool.log

test -x $PGPOOLDAEMON || exit 5

# Check whether the config file exists or not

if [ ! -r $PGPOOLCONF ]

then

	echo "$PGPOOLCONF not found"

	RETVAL=1

	failure	

	exit

fi

# Create the log file if it does not exist

if [ ! -x $PGPOOLLOG ]

then

	touch $PGPOOLLOG

	chown postgres: $PGPOOLLOG

fi

if [ ! -d $PGPOOLPIDDIR ]

then

	mkdir $PGPOOLPIDDIR

	chown postgres: $PGPOOLPIDDIR

fi

script_result=0

start(){

	pid=`pidof -s "$PGPOOLDAEMON"`

	if [ $pid ]

	then

		echo "pgpool is already running with pid $pid"

		failure "$PGPOQL_START"

		echo

		script_result=1

		exit 1

	fi

	PGPOOL_START=$"Starting ${NAME} service: "

	echo -n "$PGPOOL_START"

	$SU -l postgres -c "$PGPOOLDAEMON -f $PGPOOLCONF $OPTS & " >> "$PGPOOLLOG" 2>&1 < /dev/null

	sleep 2

	pid=`pidof -s "$PGPOOLDAEMON"`

	if [ $pid ] 

	then

		success "$PGPOOL_START"

		touch /var/lock/subsys/${NAME}

		echo

	else

		failure "$PGPOQL_START"

		echo

		script_result=1

	fi

}

stop(){

	echo -n $"Stopping ${NAME} service: "

        if [ $UID -ne 0 ]; then

                RETVAL=1

                failure

        else

		killproc /usr/bin/pgpool

#		$PGPOOLDAEMON stop & >> "$PGPOOLLOG" 2>&1 < /dev/null

                RETVAL=$?

                [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/${NAME}

        fi;

        echo

        return $RETVAL

}

switch() {

	echo -n $"Sending switchover request to $NAME "

	$PGPOOLDAEMON -f $PGPOOLCONF switch >> "$PGPOOLLOG" 2>&1 < /dev/null

	RETVAL=$?

	echo

	if [ $RETVAL -eq 0 ] 

	then

		echo_success

	else

		echo_failure

	fi

	echo

}

restart(){

    stop

    start

}

reload(){

	echo -n $"Reloading ${NAME}: "

	if [ -n "`pidfileofproc $PGPOOLDAEMON`" ] ; then

		killproc $PGPOOLDAEMON -HUP

	else

		failure $"Reloading ${NAME}"

	fi

	RETVAL=$?

	echo

}

condrestart(){

	[ -e /var/lock/subsys/${NAME} ] && restart

}

condstop(){

	[ -e /var/lock/subsys/${NAME} ] && stop

}

# See how we were called.

case "$1" in

  start)

        start

        ;;

  stop)

        stop

        ;;

  switch)

        switch

        ;;

  status)

        status pgpool

        script_result=$?

        ;;

  restart)

        restart

        ;;

  reload|force-reload)

        reload

        ;;

  condrestart)

        condrestart

        ;;

  condstop)

        condstop

        ;;

  *)

        echo $"Usage: $0 {start|stop|switch|status|restart|condrestart|condstop|reload|force-reload}"

        exit 1

esac

exit $script_result