rattail-fabric/rattail_fabric/deploy/filemon

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#!/bin/sh
# -*- coding: utf-8; -*-
################################################################################
#
# Rattail -- Retail Software Framework
# Copyright © 2010-2018 Lance Edgar
#
# This file is part of Rattail.
#
# Rattail is free software: you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation, either version 3 of the License, or (at your option) any later
# version.
#
# Rattail is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# Rattail. If not, see <http://www.gnu.org/licenses/>.
#
################################################################################
# This script is mostly based on the ``/etc/init.d/skeleton`` file from a
# Debian 6 system.
DESC=${DESC:-"Rattail File Monitor"}
NAME=${NAME:-"rattail-filemon"}
SCRIPTNAME=${SCRIPTNAME:-"/etc/init.d/$NAME"}
PIDFILE=${PIDFILE:-"/var/run/rattail/$NAME.pid"}
PYTHON=${PYTHON:-"/usr/bin/python"}
RATTAIL=${RATTAIL:-"/usr/local/bin/rattail"}
RATTAIL_ARGS=${RATTAIL_ARGS:-""}
FILEMON_ARGS=${FILEMON_ARGS:-"--pidfile=$PIDFILE"}
USER=${USER:-"rattail"}
GROUP=${GROUP:-"rattail"}
# Read configuration variable files if present.
[ -r /etc/default/rattail ] && . /etc/default/rattail
[ -r /etc/default/$NAME ] && . /etc/default/$NAME
# Load the VERBOSE setting and other rcS variables.
. /lib/init/vars.sh
# Define LSB log_* functions.
# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
# and status_of_proc is working.
. /lib/lsb/init-functions
create_pid_dir() {
PIDDIR=`dirname "$PIDFILE"`
if [ ! -d "$PIDDIR" ]; then
mkdir --parents "$PIDDIR"
fi
chown $USER:$GROUP "$PIDDIR"
}
#
# 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
create_pid_dir
start-stop-daemon --start --pidfile $PIDFILE --exec $PYTHON --user $USER --test --quiet > /dev/null \
|| return 1
start-stop-daemon --start --pidfile $PIDFILE --exec $PYTHON --startas $RATTAIL --chuid $USER --group $GROUP --quiet -- \
$RATTAIL_ARGS filemon $FILEMON_ARGS start \
|| 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
sudo -u $USER $RATTAIL $RATTAIL_ARGS filemon $FILEMON_ARGS stop > /dev/null 2>&1
}
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)
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
;;
*)
echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
exit 3
;;
esac
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