rattail-fabric2/rattail_fabric2/deploy/daemon
Lance Edgar e8769c8245 Initial commit; enough to prove concepts at least
was able to bootstrap a complete machine with this, although there's lots
missing yet...
2018-12-03 01:11:38 -06:00

149 lines
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#!/bin/sh
################################################################################
#
# 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/>.
#
################################################################################
#
# Generic 'init' script for all Rattail daemons. Originally based on the
# skeleton file from a Debian 6 system, but tweaked plenty since...
#
# NOTE: The "calling" script *must* define $NAME and $DESC (at least).
#
################################################################################
# Files in /etc/default and/or the "calling" init script may define any of the
# following as necessary, to override:
SCRIPTNAME=${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:-""}
RATTAIL_SUBCMD=${RATTAIL_SUBCMD:-"${NAME##*-}"}
RATTAIL_SUBCMD_ARGS=${RATTAIL_SUBCMD_ARGS:-""}
USER=${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 $RATTAIL_SUBCMD --pidfile="$PIDFILE" $RATTAIL_SUBCMD_ARGS start \
|| return 2
}
#
# Function that stops the daemon/service
#
do_stop()
{
# Return
# 0 if daemon has been stopped
# 1 if daemon was already stopped
# 2 if daemon could not be stopped
# other if a failure occurred
/usr/local/bin/check-rattail-daemon "$NAME" >/dev/null \
|| return 1
sudo -u $USER "$RATTAIL" $RATTAIL_ARGS $RATTAIL_SUBCMD --pidfile="$PIDFILE" $RATTAIL_SUBCMD_ARGS stop >/dev/null 2>&1 \
|| return 2
}
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) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
esac
;;
status)
/usr/local/bin/check-rattail-daemon "$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
: