#! /bin/sh
# postgresql	This is the init script for starting up the PostgreSQL
#		server
#
# chkconfig: - 85 15
# description: Starts and stops the PostgreSQL backend daemon that handles \
#	       all database requests.
# processname: postmaster
# pidfile: /var/run/postmaster.pid
PGVERSION=9.0
FULLVERSION=9.0.2

# Source function library.
INITD=/etc/init.d
. $INITD/functions

# Get function listing for cross-distribution logic.
TYPESET=`typeset -f|grep "declare"`

# Get config.
. /etc/sysconfig/network

# Find the name of the script
NAME=`basename $0`

# Set defaults for port and database directory
PGPORT=5432
export PGDATA=/var/lib/pgsql
if [ -f $PGDATA/PG_VERSION ] && [ -d $PGDATA/base/template1 ]
then
	echo "Using old-style directory structure"
else
	PGDATA=/var/lib/pgsql/data
fi

# Override defaults from /etc/sysconfig/pgsql if file is present
[ -f /etc/sysconfig/pgsql/${NAME} ] && . /etc/sysconfig/pgsql/${NAME}
export PGDATA
export PGPORT
export PGOPTS

# Check that networking is up.
# Pretty much need it for postmaster.
[ "${NETWORKING}" = "no" ] && exit 0

[ -f /usr/bin/postmaster ] || exit 0

start(){
	PSQL_START=$"Starting ${NAME} service: "

	# Check for the PGDATA structure
	if [ -f $PGDATA/PG_VERSION ] && [ -d $PGDATA/base ]
	then
	# Check version of existing PGDATA

		if [ `cat $PGDATA/PG_VERSION` != "$PGVERSION" ]
		then
			SYSDOCDIR=/usr/share/doc
			echo
			echo $"A different version of the database format was found.\nYou need to upgrade the data format before using PostgreSQL.\nSee $SYSDOCDIR/postgresql-$PGVERSION/README.rpm-dist for more information."
			exit 1
		fi

	# No existing PGDATA! Initdb it.

	else
	        echo -n $"Initializing database: "
                if [ ! -d $PGDATA ]
		then
			mkdir -p $PGDATA
			chown postgres.postgres $PGDATA
			chmod go-rwx $PGDATA
		fi
		# Make sure the locale from the initdb is preserved for later startups...
		[ -f /etc/sysconfig/i18n ] && cp /etc/sysconfig/i18n $PGDATA/../initdb.i18n
		# Just in case no locale was set, use en_US
		[ ! -f /etc/sysconfig/i18n ] && echo "LANG=en_US" > $PGDATA/../initdb.i18n 
		# Is expanded this early to be used in the command su runs
		echo "export LANG LC_ALL LC_CTYPE LC_COLLATE LC_NUMERIC LC_CTYPE LC_TIME" >> $PGDATA/../initdb.i18n
		# Initialize the database
		su -l postgres -c "/usr/bin/initdb --pgdata=$PGDATA > /dev/null 2>&1" < /dev/null
		cat >$PGDATA/.bash_profile <<EOF
PGDATA=$PGDATA/data
[ -f $PGDATA/../initdb.i18n ] && source $PGDATA/../initdb.i18n
export PGDATA
EOF
		[ -f $PGDATA/PG_VERSION ] && echo_success
		[ ! -f $PGDATA/PG_VERSION ] && echo_failure
		echo
 	fi

	# Check for postmaster already running...
  # note that pg_ctl only looks at the data structures in PGDATA
  # you really do need the pidof()
	pid=`pidof -s /usr/bin/postmaster`
	if [ $pid ] && /usr/bin/pg_ctl status -D $PGDATA > /dev/null 2>&1
	then
		echo $"Postmaster already running."
	else
		#all systems go -- remove any stale lock files
		rm -f /tmp/.s.PGSQL.${PGPORT} > /dev/null
		echo -n "$PSQL_START"
		su -l postgres -c "/usr/bin/pg_ctl  -D $PGDATA -p /usr/bin/postmaster -o -p${PGPORT} start  > /dev/null 2>&1" < /dev/null
 		sleep 1
 		pid=`pidof -s /usr/bin/postmaster`
 		if [ $pid ]
		then
			success "$PSQL_START"
			touch /var/lock/subsys/${NAME}
			echo $pid > /var/run/postmaster.${PGPORT}.pid
			echo
		else
			failure "$PSQL_START"
			echo
		fi
	fi
}

stop(){
	echo -n $"Stopping ${NAME} service: "
	su -l postgres -c "/usr/bin/pg_ctl stop -D $PGDATA -s -m fast" > /dev/null 2>&1
	ret=$? 
	if [ $ret -eq 0 ]
	then
		echo_success
	else
		echo_failure
	fi
	echo
	rm -f /var/run/postmaster.${PGPORT}.pid
	rm -f /var/lock/subsys/${NAME}
}

restart(){
    stop
    start
}

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

reload(){
    su -l postgres -c "/usr/bin/pg_ctl reload -D $PGDATA -s" > /dev/null 2>&1
}

# This script is slightly unusual in that the name of the daemon (postmaster)
# is not the same as the name of the subsystem (postgresql)

# See how we were called.
case "$1" in
  start)
	start
	;;
  stop)
	stop
	;;
  status)
	status postmaster
	;;
  restart)
	restart
	;;
  condrestart)
	condrestart
	;;
  reload|force-reload)
	reload
	;;
  *)
	echo $"Usage: $0 {start|stop|status|restart|condrestart|reload|force-reload}"
	exit 1
esac

exit 0