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#!/sbin/openrc-run
# Copyright 1999-2008 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-8.3,v 1.4 2008/09/28 22:53:02 caleb Exp $
# Modifications to support Alpine Linux pg-restore

extra_started_commands="reload"
extra_stopped_commands="setup"

depend() {
	use net
	after firewall
}

get_config() {
	[ -f ${PGDATA%/}/postgresql.conf ] || return 1
	eval echo $(sed -e 's:#.*::' ${PGDATA%/}/postgresql.conf | awk '$1 == "'$1'" { print ($2 == "=" ? $3 : $2) }')
}


checkconfig() {
	configured_port=$(get_config port)
	: ${configured_port:=${PGPORT:-5432}}
	socket_path=$(get_config unix_socket_directories)
	: ${socket_path:=/var/run/postgresql}

	checkpath -d -m 0770 -o postgres:postgres ${socket_path}

	if [ -n "$WAIT_FOR_START" ]; then
		START_TIMEOUT=$WAIT_FOR_START
	fi

	[ -d "$PGDATA/base" ] && return 0
	if [ -z "$AUTO_SETUP" ] ; then
		eerror "Database not found at: $PGDATA"
		eerror "Please make sure that PGDATA points to the right path."
		eerror "You can run '/etc/init.d/postgresql setup' to setup a new database cluster."
		return 1
	fi
	setup
}

start() {
	checkconfig || return 1

	ebegin "Starting PostgreSQL"

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

	local retval= x= extraenv=
	for x in ${PG_EXTRA_ENV} ; do
		extraenv="${extraenv} --env ${x}"
	done

	start-stop-daemon --start \
		--user ${PGUSER:-postgres} \
		--group ${PGGROUP:-postgres} \
		--env "PGPORT=${configured_port}" \
		${extraenv} \
		--pidfile ${PGDATA}/postmaster.pid \
		--wait 5000 \
		--exec /usr/bin/pg_ctl \
		-- \
		start -s -w -t ${START_TIMEOUT:-10} \
		-l ${PGDATA}/postmaster.log \
		-D ${PGDATA} -o "$PGOPTS"
	retval=$?

	if [ $retval -ne 0 ] ; then
		eerror "Check the log for a possible explanation of the above error."
		eerror "    ${PGDATA}/postmaster.log"
	fi
	eend $retval
}

stop() {
	if [ -n "$WAIT_FOR_DISCONNECT" ]; then
		NICE_TIMEOUT=$WAIT_FOR_DISCONNECT
	fi
	if [ -n "$WAIT_FOR_CLEANUP" ]; then
		RUDE_QUIT=YES
		RUDE_TIMEOUT=$WAIT_FOR_CLEANUP
	fi
	if [ -n "$WAIT_FOR_QUIT" ] && [ $WAIT_FOR_QUIT -ne 0 ]; then
		FORCE_QUIT=YES
		FORCE_TIMEOUT=$WAIT_FOR_QUIT
	fi

	local seconds=${NICE_TIMEOUT}
	local retval
	local retries=SIGTERM/${NICE_TIMEOUT}
	if [ "${RUDE_QUIT}" != "NO" ] ; then
		retries="${retries}/SIGINT/${RUDE_TIMEOUT}"
		seconds=$(( $seconds + ${NICE_TIMEOUT} ))
	fi
	if [ "${FORCE_QUIT}" = "YES" ] ; then
		retries="${retries}/SIGQUIT/${FORCE_TIMEOUT}"
		seconds=$(( $seconds + ${FORCE_TIMEOUT} ))
	fi

	ebegin "Stopping PostgreSQL (this can take up to ${seconds} seconds)"

	# Loops through nice, rude, and force quit in one go.
	start-stop-daemon --stop \
		--exec /usr/bin/postgres \
		--retry ${retries} \
		--progress \
		--pidfile ${PGDATA}/postmaster.pid
	eend
}

reload() {
	ebegin "Reloading PostgreSQL configuration"
	kill -HUP $(head -n1 ${PGDATA}/postmaster.pid)
	eend $?
}

setup() { 
	ebegin "Creating a new PostgreSQL database cluster" 
	
	if [ -d "${PGDATA}/base" ] ; then 
		eend 1 "${PGDATA}/base already exists" 
		return 
	fi 

	mkdir -p "${PGDATA}"  2>/dev/null

	# If the pg_hba.conf and friends exist, move them
	local tmpdir="$( dirname "$PGDATA" )/tmp"
	mkdir -p "${tmpdir}" >/dev/null
	echo mv "${PGDATA}"/* "${tmpdir}" 
	mv "${PGDATA}"/* "${tmpdir}"  2>/dev/null

	rm -rf "${PGDATA}"/* 2>/dev/null
	chown -Rf postgres:postgres "${PGDATA}" 
	chmod 0700 "${PGDATA}" 
	cd "${PGDATA}" # to avoid the: could not change directory to "/root" 
	su -c "/usr/bin/initdb --pgdata ${PGDATA}" postgres
	local res=$?

	# move the pg_hba.conf and friends
	mv $tmpdir/* "$PGDATA" 2>/dev/null 
	rm -rf $tmpdir 2>/dev/null

	# Do not send a SIGHUP to postmaster;  its not necessary for a new database
	# and allows pg-restore to do a blind restore of an old database

	eend $res
}