#! /bin/sh
### BEGIN INIT INFO
# Provides:          jenkins-log-client
# Required-Start:    $remote_fs $syslog $named $network
# Required-Stop:     $remote_fs $syslog $named $network
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Jenkins Log Client
# Description:       Service to push Jenkins logs into logstash.
### END INIT INFO

# Do NOT "set -e"

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="Jenkins Log Client"
NAME=jenkins-log-client
DAEMON=/usr/local/bin/log-gearman-client
PIDFILE=/var/run/$NAME/$NAME.pid
DAEMON_ARGS="-c /etc/logstash/jenkins-log-client.yaml -d /var/log/logstash/log-client-debug.log -p $PIDFILE"
SCRIPTNAME=/etc/init.d/$NAME
USER=logstash

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

#
# Function that starts the daemon/service
#
do_start()
{
	# Return
	#   0 if daemon has been started
	#   1 if daemon was already running
	#   2 if daemon could not be started

	mkdir -p /var/run/$NAME
	chown $USER /var/run/$NAME
	start-stop-daemon --start --quiet --pidfile $PIDFILE -c $USER --exec $DAEMON --test > /dev/null \
		|| return 1
	start-stop-daemon --start --quiet --pidfile $PIDFILE -c $USER --exec $DAEMON -- \
		$DAEMON_ARGS \
		|| return 2
	# Add code here, if necessary, that waits for the process to be ready
	# to handle requests from services started subsequently which depend
	# on this one.  As a last resort, sleep for some time.
}

#
# Function that stops the daemon/service
#
do_stop()
{
	# Return
	#   0 if daemon has been stopped
	#   1 if daemon was already stopped
	#   2 if daemon could not be stopped
	#   other if a failure occurred
	start-stop-daemon --stop --signal 9 --pidfile $PIDFILE
	RETVAL="$?"
	[ "$RETVAL" = 2 ] && return 2
	rm -f /var/run/$NAME/*
	return "$RETVAL"
}

#
# Function that stops the daemon/service
#
#do_graceful_stop()
#{
#	PID=`cat $PIDFILE`
#	kill -USR1 $PID
#
#	# wait until really stopped
#	if [ -n "${PID:-}" ]; then
#		i=0
#		while kill -0 "${PID:-}" 2> /dev/null;  do
#			if [ $i -eq '0' ]; then
#				echo -n " ... waiting "
#			else
#				echo -n "."
#			fi
#			i=$(($i+1))
#			sleep 1
#		done
#	fi
#
#	rm -f /var/run/$NAME/*
#}

#
# Function that sends a SIGHUP to the daemon/service
#
#do_reload() {
#	#
#	# If the daemon can reload its configuration without
#	# restarting (for example, when it is sent a SIGHUP),
#	# then implement that here.
#	#
#	start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name zuul-server
#	return 0
#}

case "$1" in
  start)
	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
	do_start
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  stop)
	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
	do_stop
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  status)
       status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
       ;;
#  reload)
#	#
#	# If do_reload() is not implemented then leave this commented out
#	# and leave 'force-reload' as an alias for 'restart'.
#	#
#	log_daemon_msg "Reloading $DESC" "$NAME"
#	do_reload
#	log_end_msg $?
#	;;
  restart|force-reload)
	#
	# If the "reload" option is implemented then remove the
	# 'force-reload' alias
	#
	log_daemon_msg "Restarting $DESC" "$NAME"
	do_stop
	do_start
	;;
  *)
	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
	exit 3
	;;
esac

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