#!/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/lib/psql
	POSTGRES_LOG=/var/log/pgsql
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
  		msg_Already_Running PostgreSQL
	else 	
		# Sanity check
		[ -f /tmp/.s.PGSQL.5432 ] || rm -f /tmp/.s.PGSQL.5432
		
		# 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` != '7.0' ]; then
			show "Databases created under incompatibile version. Migrate them first."; fail
			exit 1
		    fi
		else
		    # Create sample database
            	    if [ ! -d $POSTGRES_DATA_DIR ]; then
			mkdir -p $POSTGRES_DATA_DIR
			chown postgres.postgres $POSTGRES_DATA_DIR
		    fi
		    su postgres -c "LD_LIBRARY_PATH=/usr/lib \
			initdb --pgdata=$POSTGRES_DATA_DIR \
			--pglib=/usr/lib/pgsql"
		fi
		
		msg_starting PostgreSQL 
		busy
		PGSQL_CMDLINE="$([ "$ALLOW_TCP_CONNECTIONS" = yes ] && echo "-i") \
		    $([ -n "$MAX_NUM_BACKENDS" ] && echo "-N $MAX_NUM_BACKENDS") \
		    $([ -n "$POSTGRES_DATA_DIR" ] && echo "-D $POSTGRES_DATA_DIR") \
		    $([ "$POSTGRES_QUIET". = yes. ] && echo '-o -Q') \
		    $([ "$POSTGRES_DISABLE_FSYNC". = yes. ] && echo '-o -F')";
		su postgres -c "/usr/bin/postmaster $PGSQL_CMDLINE >>$POSTGRES_LOG 2>&1 &"
		out=`status postmaster`
		if [ $? -eq 0 ]; then 
		    deltext; ok
		else
		    deltext; fail 
		    exit 1	
		fi
	fi
	touch /var/lock/subsys/postgresql
	;;
  stop)
  	if [ ! -f /var/lock/subsys/postgresql ]; then
		msg_Not_Running PostgreSQL
		exit 0	
	fi
	msg_stopping postgreSQL
	killproc postmaster
	out=`status postmaster`
	if [ $? -eq 0 ]; then 
	    deltext; fail 
	    echo -e "\n$out";
	    exit 1	
	fi
	
	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