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#!/sbin/runscript
# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/dev-db/postgresql-server/files/postgresql.init-9.0-r1,v 1.1 2010/06/04 14:18:52 patrick Exp $

opts="${opts} reload"

depend() {
	use net
	if [ -L /etc/eselect/postgresql/service ] ; then 
		local p_service="$(for f in /etc/eselect/postgresql/service/* ; do . $f ; done ; echo $postgres_service )"
		test "${p_service}" = "${SVCNAME}" && provide postgresql
	fi
}

checkconfig() {
	if [ ! -d "$PGDATA" ] ; then
		eerror "Directory not found: $PGDATA"
		eerror "Please make sure that PGDATA points to the right path."
		eerror "You can run 'emerge postgresql-server --config' to setup a new database cluster."
		return 1
	fi
}

start() {
	checkconfig || return 1

	ebegin "Starting PostgreSQL"

	if [ -f "$PGDATA/postmaster.pid" ] ; then
		rm -f "$PGDATA/postmaster.pid"
	fi

	local retval

	su -l ${PGUSER} \
		-c "env PGDATA=\"${PGDATA}\" PGPORT=\"${PGPORT}\" ${PG_EXTRA_ENV} /usr/lib/postgresql-9.0/bin/pg_ctl start ${WAIT_FOR_START} -t ${START_TIMEOUT} -s -o '--silent-mode=true ${PGOPTS}'"
	retval=$?

	if [[ $retval != 0 ]] ; then
		eend $retval
		return $retval
	fi

# The following is to catch the case of an already running server
# in which pg_ctl doesn't know to which server it connected to and
# falsely reports the server as 'up'
	sleep 2
	if [ ! -f "$PGDATA/postmaster.pid" ] ; then
		eerror "The PID file doesn't exist but pg_ctl reported a running server."
		eerror "Please check whether there is another server running on the same port or read the log-file."
		eend 1
		return 1
	fi

	local pid=$(grep "^[0-9]\+" "$PGDATA/postmaster.pid")
	ps -p "${pid}" &> /dev/null
	eend $?
}

stop() {
	ebegin "Stopping PostgreSQL (this can take up to $(( ${NICE_TIMEOUT} + ${RUDE_TIMEOUT} + ${FORCE_TIMEOUT} )) seconds)"

	local retval

	if [[ "${NICE_QUIT}" != "NO" ]] ; then
		su -l ${PGUSER} \
			-c "env PGDATA=\"${PGDATA}\" PGPORT=\"${PGPORT}\" ${PG_EXTRA_ENV} /usr/lib/postgresql-9.0/bin/pg_ctl stop ${WAIT_FOR_STOP} -t ${NICE_TIMEOUT} -s -m smart"
		retval=$?

		if [[ $retval == 0 ]] ; then
			eend $retval
			return $retval
		fi
	
		ewarn "Shutting down the server gracefully failed."
		ewarn "Probably because some clients did not disconnect within ${NICE_TIMEOUT} seconds."
	else
		ewarn "NICE_QUIT disabled."
		ewarn "You really should have it enabled."
	fi

	if [[ "${RUDE_QUIT}" != "NO" ]] ; then
		ewarn "RUDE_QUIT enabled."
		ewarn "Going to shutdown the server anyway."

		su -l ${PGUSER} \
			-c "env PGDATA=\"${PGDATA}\" PGPORT=\"${PGPORT}\" ${PG_EXTRA_ENV} /usr/lib/postgresql-9.0/bin/pg_ctl stop ${WAIT_FOR_STOP} -t ${RUDE_TIMEOUT} -s -m fast"
		retval=$?

		if [[ $retval == 0 ]] ; then
			eend $retval
			return $retval
		fi

		eerror "Failed to shutdown server."
	else
		ewarn "RUDE_QUIT disabled."
	fi

	if [[ "${FORCE_QUIT}" == "YES" ]] ; then
		ewarn "FORCE_QUIT enabled."
		ewarn "Forcing server to shutdown."
		ewarn "A recover-run will be executed on the next startup."

		su -l ${PGUSER} \
			-c "env PGDATA=\"${PGDATA}\" PGPORT=\"${PGPORT}\" ${PG_EXTRA_ENV} /usr/lib/postgresql-9.0/bin/pg_ctl stop ${WAIT_FOR_STOP} -t ${FORCE_TIMEOUT} -s -m immediate"

		retval=$?

		if [[ $retval == 0 ]] ; then
			ewarn "Server forced down."
			eend $retval
			return $retval
		fi

		eerror "Forced shutdown failed!!!"
		eerror "Something is wrong with your system."
		eerror "Please take care of it manually."
		eerror "Unable to stop server."
		eend $retval
		return $retval
	else
		ewarn "FORCE_QUIT disabled."
		eerror "Unable to shutdown server."
		eend 1
		return 1
	fi
}

reload() {
	ebegin "Reloading PostgreSQL configuration"
	su -l ${PGUSER} \
		-c "env PGDATA=\"${PGDATA}\" PGPORT=\"${PGPORT}\" ${PG_EXTRA_ENV} /usr/lib/postgresql-9.0/bin/pg_ctl reload -s"
	eend $?
}