#!/bin/sh /etc/rc.common
# Copyright (C) 2006-2015 OpenWrt.org
START=50

PROG=/usr/bin/postmaster

USE_PROCD=1

fix_hosts() {
	# make sure localhost (without a dot) is in /etc/hosts
	grep -q 'localhost$' /etc/hosts || echo '127.0.0.1 localhost' >> /etc/hosts
}

fix_perms() {
	# for whatever reason, /dev/null gets wrong perms
	chmod a+w /dev/null
}

cleanup() {
	if [ -f "$1/postmaster.pid" ]; then
		rm "$1/postmaster.pid"
	fi
}

start_service() {
	. /lib/functions/postgresql.sh

	config_load "postgresql"
	config_get pgdata config PGDATA
	config_get pgopts config PGOPTS

	user_exists postgres 5432 || user_add postgres 5432
	group_exists postgres 5432 || group_add postgres 5432

	[ "$_BOOT" = "1" ] &&
		[ "$(procd_get_mountpoints $pgdata)" ] && return 0

	fix_perms
	fix_hosts

	if [ ! -e "${pgdata}/PG_VERSION" ]; then
		pg_init_data ${pgdata}
		[ $? -gt 0 ] && return 1
	fi

	cleanup "${pgdata}"

	mkdir -m 0755 -p /var/run/postgresql
	chmod 0750 /var/run/postgresql
	chown postgres:postgres /var/run/postgresql
	procd_open_instance postmaster
	procd_set_param user postgres
	procd_set_param command $PROG
	procd_append_param command -D "${pgdata}"
	procd_append_param command -k "/var/run/postgresql"
	[ -n "${pgopts}" ] && procd_append_param command -o "${pgopts}"
	procd_set_param respawn retry=60
	procd_add_jail postgresql log
	procd_add_jail_mount /usr/lib/postgresql /usr/share/postgresql
	procd_add_jail_mount_rw /var/run/postgresql "${pgdata}"
	procd_add_jail_mount_rw /dev/shm
	procd_set_param stderr 1
	procd_set_param stdout 1
	procd_close_instance

	procd_open_instance uci_dbinit
	procd_set_param user postgres
	procd_set_param command /lib/functions/postgresql.sh init "${pgdata}"
	procd_set_param stdout 1
	procd_set_param stderr 1
	procd_close_instance
}

boot() {
	_BOOT=1 start
}

service_triggers() {
	config_load "postgresql"
	config_get pgdata config PGDATA
	procd_add_restart_mount_trigger "${pgdata}"
}

stop_service() {
	procd_send_signal "postgresql" postmaster SIGTERM
}

status_service() {
	config_load "postgresql"
	config_get pgdata config PGDATA
	/usr/bin/pg_ctl status -U postgres -D "${pgdata}"
}