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#!/sbin/runscript
# Copyright 1999-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

create_tmpdir() {
	local tmpdir="$(mktemp -d -p /tmp logstash-forwarder.XXXXXXXXXX)"

	chown logstash:logstash "${tmpdir}" || return 1
	chmod 0750 "${tmpdir}" || return 1

	echo "${tmpdir}"
}

remove_tmpdir() {
	local d=''
	local tmpdir=''

	for d in /tmp/logstash-forwarder.??????????; do
		[[ -e ${d} ]] || return 0
		[[ -d ${d} ]] || continue

		if ! [[ ${tmpdir} ]]; then
			tmpdir="${d}"
		else
			# There are more directories like that, so better keep them all.
			return 1
		fi
	done

	rm -r "${tmpdir}"
}

start() {
	local config_file=/etc/logstash-forwarder/logstash-forwarder.conf
	local tmpdir="$(create_tmpdir)"

	if ! [[ -d ${tmpdir} ]]; then
		eend 1 "Failed to create tmp directory for logstash-forwarder"
		return 1
	fi

	ebegin "Starting logstash-forwarder"
	start-stop-daemon --start --exec /usr/bin/logstash-forwarder \
		--make-pidfile --pidfile /run/logstash-forwarder.pid \
		--background --wait 100 --chdir "${tmpdir}" \
		--user logstash --group logstash \
		-- -config="${config_file}" ${LOGSTASH_FORWARDER_ARGS}
	eend $?
}

stop() {
	ebegin "Stopping logstash-forwarder"
	start-stop-daemon --stop --exec /usr/bin/logstash-forwarder \
		--pidfile /run/logstash-forwarder.pid --user logstash --group logstash
	local rc=$?

	if ! remove_tmpdir; then
		ewarn "Failed to remove logstash-forwarder tmp directory"
	fi

	eend ${rc}
}