#!/bin/sh
#
# postgresql	This is the init script for starting up the PostgreSQL
#		server
#
# chkconfig:	345 85 15
#
# description:	Starts and stops the PostgreSQL backend daemon that handles \
#		all database requests.
#
# processname:	postmaster
# pidfile:	/var/run/postmaster.pid

# Source function library
. /etc/rc.d/init.d/functions

# Get network config
. /etc/sysconfig/network

# Get service config
if [ -f /etc/sysconfig/postgresql ] ; then
        . /etc/sysconfig/postgresql
else
        ALLOW_TCP_CONNECTIONS=no
	POSTGRES_DATA_DIR=/var/state/psql
fi

# Check that networking is up.
if is_no "${NETWORKING}"; then
	msg_Network_Down Postgresql
	exit 1
fi

# See how we were called.
case "$1" in
  start)
	# Check if the service is already running?
	if [ ! -f /var/lock/subsys/postgresql ]; then

		# Sanity check
		[ -f /tmp/.s.PGSQL.5432 ] || rm -f /tmp/.s.PGSQL.5432
		STARTTEXT="Starting postgresql"
		
		# Check for the PGDATA structure
		if [ -f $POSTGRES_DATA_DIR/PG_VERSION ] && [ -d $POSTGRES_DATA_DIR/base/template1 ]; then
		    # Check version of existing PGDATA
		    if [ `cat $POSTGRES_DATA_DIR/PG_VERSION` != '6.5' ]; then
			STARTTEXT="$STARTTEXT [Old version. Need to Upgrade]"
			show "$STARTTEXT"; fail
			exit 1
		    fi
		else
		    # Create sample database
            	    if [ ! -d $POSTGRES_DATA_DIR ]; then
			mkdir -p $POSTGRES_DATA_DIR
			chown postgres.postgres $POSTGRES_DATA_DIR
		    fi
		    show "Creating postgresql init database"
		    busy
		    su postgres -c "LD_LIBRARY_PATH=/usr/lib \
			initdb --pgdata=$POSTGRES_DATA_DIR \
			--pglib=/usr/lib/pgsql &>/tmp/initdb.pgsql"
		    deltext; ok
		fi
		
		show "$STARTTEXT"
		busy
		su postgres -c "/usr/bin/postmaster \
			$([ "$ALLOW_TCP_CONNECTIONS" = yes ] && echo "-i") \
			$([ -n "$MAX_NUM_BACKENDS" ] && echo "-N $MAX_NUM_BACKENDS") \
			$([ -n "POSTGRES_$DATA_DIR" ] && echo "-D $POSTGRES_DATA_DIR") \
			-o \
			$([ "$POSTGRES_QUIET" = yes ] && echo "-Q") \
			$([ "$POSTGRES_DIABLE_FSYNC" = yes ] && echo "-F") 2> /dev/null &"
		sleep 2
		if ps ax | grep -v grep | grep -q postmaster; then
			deltext; ok
		else
			deltext; fail
		fi
	else
		msg_Already_Running Postgresql
	fi
	touch /var/lock/subsys/postgresql
	;;
  stop)
	msg_stopping postgresql
	killproc postmaster
	sleep 2
	rm -f /var/run/postmaster.pid
	rm -f /var/lock/subsys/postgresql
	;;
  status)
	status postmaster
	;;
  restart|reload)
	$0 stop
	$0 start
	;;
  *)
	msg_Usage "$0 {start|stop|status|restart|reload}"
	exit 1
esac

exit 0