Paul Belanger 854ee57989
Expose user for service configuration for init.d script
Currently we hardcode the user we use to start services. Allow the
user to decided who to use.

Sadly, we cannot support systemd services at this time. We likely need
to switch to the systemd task or write out own logic. We'll have to
revisting this in the future.

Change-Id: I338d167863509667b935ccc7490d796315bc6153
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
2016-09-03 19:42:40 -04:00

142 lines
3.8 KiB
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#! /bin/sh
### BEGIN INIT INFO
# Provides: zuul-launcher
# Required-Start: $remote_fs $syslog
# Required-Stop: $remote_fs $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Zuul
# Description: Trunk gating system launcher
### END INIT INFO
# Do NOT "set -e"
# PATH should only include /usr/* if it runs after the mountnfs.sh script
PATH=/sbin:/usr/sbin:/bin:/usr/bin
DESC="Zuul Launcher"
NAME=zuul-launcher
PIDFILE=/var/run/$NAME/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME
# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME
DAEMON=$PREFIX/bin/zuul-launcher
USER=${RUNASUSER:-zuul}
# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 5
# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh
# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions
#
# Function that starts the daemon/service
#
do_start()
{
# Return
# 0 if daemon has been started
# 1 if daemon was already running
# 2 if daemon could not be started
# 3 if pid file already exist
mkdir -p /var/run/$NAME
chown $USER /var/run/$NAME
if [ -f $PIDFILE ]; then
return 3
fi
start-stop-daemon \
--start --quiet --pidfile $PIDFILE -c $USER \
--exec $DAEMON --test > /dev/null || return 1
start-stop-daemon \
--start --quiet --pidfile $PIDFILE -c $USER \
--exec $DAEMON -- $DAEMON_ARGS || return 2
# Add code here, if necessary, that waits for the process to be ready
# to handle requests from services started subsequently which depend
# on this one. As a last resort, sleep for some time.
}
#
# 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
start-stop-daemon --stop --signal 9 --pidfile $PIDFILE
RETVAL="$?"
[ "$RETVAL" = 2 ] && return 2
rm -f /var/run/$NAME/*
return "$RETVAL"
}
#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
#
# If the daemon can reload its configuration without
# restarting (for example, when it is sent a SIGHUP),
# then implement that here.
#
start-stop-daemon \
--stop --signal 1 --quiet --pidfile $PIDFILE --name $DAEMON
return 0
}
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 ;;
3) echo "Pidfile at $PIDFILE already exists, run service zuul-launcher stop to clean up."
esac
;;
stop)
[ "$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 $?
;;
reload|force-reload)
#
# If do_reload() is not implemented then leave this commented out
# and leave 'force-reload' as an alias for 'restart'.
#
log_daemon_msg "Reloading $DESC" "$NAME"
do_reload
log_end_msg $?
;;
restart)
#
# If the "reload" option is implemented then remove the
# 'force-reload' alias
#
log_daemon_msg "Restarting $DESC" "$NAME"
do_stop
do_start
;;
*)
#echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2
echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
exit 3
;;
esac
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