fetep/pencil — Issue #16: debian init.d script
Author: omry
Created: 2011-12-27 16:34:04+00:00
State: open

#! /bin/sh
### BEGIN INIT INFO
# Provides: pencil
# Required-Start: $remote_fs $syslog
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: pencil graphite frontend
# Description: Starts pencil graphite frontend
### END INIT INFO

# Author: Omry Yadan

# Source init-functions:
#source /lib/lsb/init-functions
. /lib/lsb/init-functions

# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

# Path to Executable
DAEMON=/var/lib/gems/1.8/gems/pencil-0.2.10/bin/pencil

PIDFILE=/var/run/pencil.pid

SCRIPTNAME=/etc/init.d/pencil

ARGS="-d /etc/pencil"

# Exit if the package is not installed
if [ ! -x "$DAEMON" ]; then {
echo "Couldn't find $DAEMON or not executable"
exit 99
}
fi

# Load the VERBOSE setting and other rcS variables
[ -f /etc/default/rcS ] && . /etc/default/rcS

#
# 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

# Test to see if the daemon is already running - return 1 if it is.
start-stop-daemon --start --pidfile $PIDFILE \
--exec $DAEMON --test -- start $ARGS > /dev/null || return 1

# Start the daemon for real, return 2 if failed
start-stop-daemon --background --start --make-pidfile --pidfile $PIDFILE --exec $DAEMON $ARGS || 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
log_daemon_msg "Stopping $DESC" "$NAME"
start-stop-daemon --stop --signal 2 --retry 5 --quiet --pidfile $PIDFILE
RETVAL="$?"
[ "$RETVAL" = 2 ] && return 2

# Delete the exisitng PID file
if [ -e "$PIDFILE" ]; then {
rm $PIDFILE
}
fi

return "$RETVAL"
}

# Display / Parse Init Options
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
;;
restart)
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 is still running
*) log_end_msg 1 ;; # Failed to start
esac
;;
*)
# Failed to stop
log_end_msg 1
;;
esac
;;
status)
if [ -s $PIDFILE ]; then
pid=`cat $PIDFILE`
kill -0 $pid >/dev/null 2>&1
if [ "$?" = "0" ]; then
echo "$NAME is running: pid $pid."
RETVAL=0
else
echo "Couldn't find pid $pid for $NAME."
RETVAL=1
fi
else
echo "$NAME is stopped (no pid file)."
RETVAL=1
fi
return $RETVAL
;;
*)
echo "Usage: $SCRIPTNAME {start|stop|restart|status}" >&2
exit 3
;;
esac
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