nginx-formula/nginx/templates/sysvinit-logger.jinja

#!/bin/bash
# /etc/init.d/nginx-logger-{{ type }}
#

### BEGIN INIT INFO
# Provides:          nginx-logger-{{ type }}
# Required-Start:    $local_fs $remote_fs $network $syslog
# Required-Stop:     $local_fs $remote_fs $network $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts the nginx-logger-{{ type }}
# Description:       starts nginx-logger-{{ type }} using start-stop-daemon
### END INIT INFO

NAME=nginx-logger-{{ type }}
DESC="syslog forwarder for nginx {{type}} logs"
DAEMON=/usr/bin/logger
DAEMON_ARGS=" -f /var/log/nginx/{{ type }}.fifo -t nginx -p {% if type == 'error' %}warn{% else %}debug{% endif %}"
PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME

# Exit if the daemon program isn't installed
[ -x "$DAEMON" ] || exit 0

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

. /lib/lsb/init-functions

do_start() {
	# Return
	# 0 if daemon has been started
	# 1 if daemon was already running
	# 2 if daemon could not be started
	pid=$(pidofproc -p $PIDFILE $DAEMON)
	if [ -n "$pid" ]; then
		return 1;
	fi

	if [ ! -r /var/log/nginx/{{ type }}.fifo ]; then
		mkdir -p /var/log/nginx
		mkfifo /var/log/nginx/{{ type }}.fifo
		chown root.root /var/log/nginx/{{ type }}.fifo
		chmod 660 /var/log/nginx/{{ type }}.fifo
	fi

	start-stop-daemon --start --quiet --background --pidfile $PIDFILE --exec $DAEMON -- $DAEMON_ARGS
}

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
	pids=$(pidof -x $DAEMON)
	if [ $? -eq 0 ]; then
		echo $pids | xargs kill 2&1>/dev/null
		RETVAL=0
	else
		RETVAL=1
	fi

	[ "$RETVAL" = 2 ] && return 2
	rm -f $PIDFILE
	return "$RETVAL"
}

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 $?
		;;
	restart|force-reload)
		[ "$VERBOSE" != no ] && log_daemon_msg "Restarting $DESC" "$NAME"
		do_stop
		case "$?" in
			0|1)
				do_start
				case "$?" in
					0) log_end_msg 0 ;;
					1) log_end_msg 1 ;; # Old process still running
					*) log_end_msg 1 ;; # Failed to start
				esac
				;;
			*)
				# Failed to stop
				log_end_msg 1
				;;
		esac
		;;
	*)
		echo "Usage: /etc/init.d/nginx-logger-{{ type }} {start|stop|status|restart|force-reload}" >&2
		exit 3
		;;
esac

exit 0