ccws-cleaner

#!/bin/sh
### BEGIN INIT INFO
# Provides:          ccws-cleaner
# Required-Start:    ccws-db
# Required-Stop:     ccws-db
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: initscript for Charta Caeli web service Cleaner
### END INIT INFO

# Author: #USERNAME# <#EMAIL#>

# 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="Charta Caeli web service Cleaner"
NAME=ccws-cleaner

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

JAVA_HOME=${JAVA_HOME:-/usr/lib/jvm/java-1.8.0-openjdk}

DAEMON_USR=${DAEMON_USR:-ccaeli}
DAEMON_DIR=${DAEMON_DIR:-/opt/chartacaeli/web/WEB-INF}
DAEMON=${DAEMON:-./Cleaner.sh}
DAEMON_CMD=${DAEMON_CMD:-unset LANG ; JAVA=$JAVA_HOME/bin/java LOGLEVEL=1 $DAEMON -i 3600}

PIDFILE=/opt/chartacaeli/$NAME.pid
LOGFILE=/opt/chartacaeli/$NAME.log
SCRIPTNAME=/etc/init.d/$NAME

#
# 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

	if test -s $PIDFILE ; then
		pid=$(cat $PIDFILE)
		if test -d /proc/$pid ; then
			cat /proc/$pid/cmdline | grep -qs $DAEMON && return 1
		else
			# remove abandoned PID file
			rm -f $PIDFILE
		fi
	fi

	sudo -u $DAEMON_USR -- bash -c "cd $DAEMON_DIR ; $DAEMON_CMD >>$LOGFILE 2>&1 & echo \$! >$PIDFILE"

	if test $? -eq 0 ; then
		return 0
	fi

	return 2
}

#
# 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

	if test -s $PIDFILE ; then
		pid=$(cat $PIDFILE)
		if test -d /proc/$pid ; then
			cat /proc/$pid/cmdline | grep -qs $DAEMON \
			&& { sudo -u $DAEMON_USR -- bash -c "kill $pid ; rm -f $PIDFILE" ; return 0 ; }
		else
			# remove abandoned PID file
			rm -f $PIDFILE
		fi
	fi

	return 1
}

do_status()
{
	# Return
	#   0 if daemon is running
	#   1 if daemon not running

	if test -s $PIDFILE ; then
		pid=$(cat $PIDFILE)
		if test -d /proc/$pid ; then
			cat /proc/$pid/cmdline | grep -qs $DAEMON \
			&& return 0
		else
			# remove abandoned PID file
			rm -f $PIDFILE
		fi
	fi

	return 1
}

case "$1" in
  start)
	[ "$VERBOSE" != no ] && echo "Starting $DESC" "$NAME"
	do_start
	case "$?" in
		0) [ "$VERBOSE" != no ] && echo "$NAME : $DAEMON started" ; exit 0 ;;
		1) [ "$VERBOSE" != no ] && echo "$NAME : $DAEMON already running" ; exit 0 ;;
		2) [ "$VERBOSE" != no ] && echo "$NAME : failed to start $DAEMON" ; exit 1 ;;
	esac
	;;
  stop)
	[ "$VERBOSE" != no ] && echo "Stopping $DESC" "$NAME"
	do_stop
	case "$?" in
		0) [ "$VERBOSE" != no ] && echo "$NAME : $DAEMON stopped" ; exit 0 ;;
		1) [ "$VERBOSE" != no ] && echo "$NAME : $DAEMON already stopped" ; exit 0 ;;
		2) [ "$VERBOSE" != no ] && echo "$NAME : failed to stop $DAEMON" ; exit 1 ;;
	esac
	;;
  status)
	do_status && exit 0 || exit $?
	;;
  *)
	echo "Usage: $SCRIPTNAME {start|stop|status}" >&2
	exit 3
	;;
esac