#! /bin/sh
### BEGIN INIT INFO
# Provides:          carbon-cache
# Required-Start:    $remote_fs $syslog $network
# Required-Stop:     $remote_fs $syslog $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Graphite Carbon backend daemon
# Description:       backend data caching and persistence daemon for Graphite
### END INIT INFO

# Author: Jonas Genannt <jonas.genannt@capi2name.de>

global PATH := '/sbin:/usr/sbin:/bin:/usr/bin'
global DESC := '"Graphite backend daemon'"
global NAME := 'carbon-cache'
global DAEMON := "/usr/bin/$NAME"
global PIDFILE := "/var/run/$NAME.pid"
global DAEMON_ARGS := ""--config=/etc/carbon/carbon.conf --pidfile=$PIDFILE --logdir=/var/log/carbon/ start""
global SCRIPTNAME := "/etc/init.d/$NAME"

test -x $DAEMON || exit 0

test -r /etc/default/graphite-carbon && source /etc/default/graphite-carbon

source /lib/lsb/init-functions

if test ! -r /etc/carbon/carbon.conf {
	test $VERBOSE != no && echo "Missing /etc/carbon/carbon.conf - not starting."
	exit 0
}

if test $CARBON_CACHE_ENABLED != "true"  {
	test $VERBOSE != no && echo "carbon-cache disabled in /etc/default/graphite-carbon"
	exit 0
}

proc do_start
{
	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \
		|| return 1
	start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON -- \
		$DAEMON_ARGS \
		|| return 2
}

proc do_stop
{
	start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME
	global RETVAL := "$Status"
	test $RETVAL = 2 && return 2

	start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON
	test "$Status" = 2 && return 2

	rm -f $PIDFILE
	return $RETVAL
}

matchstr $1 {
	start {
	test $VERBOSE != no && log_daemon_msg "Starting $DESC" $NAME
	do_start
	matchstr "$Status" {
		0|1 { test $VERBOSE != no && log_end_msg 0 }
		2 { test $VERBOSE != no && log_end_msg 1 }
	}
	}
	stop {
	test $VERBOSE != no && log_daemon_msg "Stopping $DESC" $NAME
	do_stop
	matchstr "$Status" {
		0|1 { test $VERBOSE != no && log_end_msg 0 }
		2 { test $VERBOSE != no && log_end_msg 1 }
	}
	}
	status {
	status_of_proc $DAEMON $NAME && exit 0 || exit $Status
	}
	restart|force-reload {
	log_daemon_msg "Restarting $DESC" $NAME
	do_stop
	matchstr "$Status" {
		0|1 {
		do_start
		matchstr "$Status" {
			0 { log_end_msg 0 }
			1 { log_end_msg 1 }
			* { log_end_msg 1 }
		}
		}
		* {
		log_end_msg 1
		}
	}
	}
	* {
	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" > !2
	exit 3
	}
}

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