[Mono-list] xsp as a daemon

[peter]

Oleg Deribas wrote:

>> Could you, please, post your results here in case you'll have any 
>> success? 
>
OK people, here's the best I can do for the moment.

The attached script works to the extent that it reliably starts xsp, 
unreliably shuts it down and makes a right royal mess of most of the 
other things its supposed to do.  I'm most concerned about the stop 
functionality: it's really ugly, and flakey as well.  However, I just 
don't have any more time to spend on this.  Sorry.

The thing that puzzles me most is the probe functionality - in 
particular why it should start xsp after having printed the "not 
supported" message.  In fact, if you simply call the script without a 
parameter, it still starts (or tries to start) xsp.  I can't for the 
life of me figure out why.  But then again, as is abundantly clear from 
the script, I'm not an expert at shell scripting.

Having said that, I copied the script to /etc/init.d and called insserv 
on it and then restarted my machine.  xsp starts up just fine and is 
registered in YAST2 (i.e. YAST2 sees it and reports correctly on its 
status).  And pointing Firefox at localhost:8080 brings up the test 
application(s).

Sorry I can't come up with a better script.  If anyone else can, I'd be 
very grateful...

Cheers


Peter

-------------- next part --------------
#! /bin/sh
# Copyright (c) 1995-2004 SUSE Linux AG, Nuernberg, Germany.
# All rights reserved.
#
# Author: Kurt Garloff
# Please send feedback to http://www.suse.de/feedback/
#
# /etc/init.d/XSP
#   and its symbolic link
# /(usr/)sbin/rcXSP
#
#    This program 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 2 of the License, or 
#    (at your option) any later version. 
# 
#    This program 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 this program; if not, write to the Free Software 
#    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# System startup script for service/daemon XSP

### BEGIN INIT INFO
# Provides:          xsp
# Required-Start:    $syslog $remote_fs $network
# Should-Start: $time ypbind sendmail
# Required-Stop:     $syslog $remote_fs $network
# Should-Stop: $time ypbind sendmail
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: xsp daemon providing xsp
# Description:       Start xsp to provide xsp
#	XSP is a basic web server for Mono
### END INIT INFO

# Check for missing binaries (stale symlinks should not happen)
# Note: Special treatment of stop for LSB conformance

XSP=/usr/bin/xsp
XSP_ROOT=/usr/lib/xsp/test
XSP_BIN=nohup $XSP --root $XSP_ROOT  --applications /:. --nonstop &

test -x $XSP || { echo "$XSP not installed"; 
	if [ "$1" = "stop" ]; then exit 0;
	else exit 5; fi; }

# Shell functions sourced from /etc/rc.status:
#      rc_check         check and set local and overall rc status
#      rc_status        check and set local and overall rc status
#      rc_status -v     be verbose in local rc status and clear it afterwards
#      rc_status -v -r  ditto and clear both the local and overall rc status
#      rc_status -s     display "skipped" and exit with status 3
#      rc_status -u     display "unused" and exit with status 3
#      rc_failed        set local and overall rc status to failed
#      rc_failed <num>  set local and overall rc status to <num>
#      rc_reset         clear both the local and overall rc status
#      rc_exit          exit appropriate to overall rc status
#      rc_active        checks whether a service is activated by symlinks
. /etc/rc.status

# Reset status of this service
rc_reset

# Return values acc. to LSB for all commands but status:
# 0	  - success
# 1       - generic or unspecified error
# 2       - invalid or excess argument(s)
# 3       - unimplemented feature (e.g. "reload")
# 4       - user had insufficient privileges
# 5       - program is not installed
# 6       - program is not configured
# 7       - program is not running
# 8--199  - reserved (8--99 LSB, 100--149 distrib, 150--199 appl)
# 
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signaling is not supported) are
# considered a success.

case "$1" in
    start)
	echo -n "Starting XSP "
	## Start daemon with startproc(8). If this fails
	## the return value is set appropriately by startproc.
	#
	# Don't want startproc as we're using mono
	# startproc $XSP_BIN
	
	$XSP_BIN

	# Remember status and be verbose
	rc_status -v
	;;
    stop)
	echo -n "Shutting down XSP "
	## Stop daemon with killproc(8) and if this fails
	## killproc sets the return value according to LSB.

	# killproc -TERM $XSP_BIN
	
	XSP_PROC=`ps -eo pid,cmd | grep /usr/lib/xsp/1.0/xsp.exe | grep -v grep | cut -d ' ' -f1`
	
	if [ -z "$XSP_PROC" ]
	then
		XSP_PROC=`ps -eo pid,cmd | grep /usr/lib/xsp/1.0/xsp.exe | grep -v grep | cut -d ' ' -f2`
	fi
	
	if [ -n "$XSP_PROC" ]
	then
		kill -9 $XSP_PROC
	else
		exit 7
	fi

	# Remember status and be verbose
	rc_status -v
	;;
    try-restart|condrestart)
	## Do a restart only if the service was active before.
	## Note: try-restart is now part of LSB (as of 1.9).
	## RH has a similar command named condrestart.
	if test "$1" = "condrestart"; then
		echo "${attn} Use try-restart ${done}(LSB)${attn} rather than condrestart ${warn}(RH)${norm}"
	fi
	$0 status
	
	if test $? = 0; then
		$0 restart
	else
		rc_reset	# Not running is not a failure.
	fi
	# Remember status and be quiet
	rc_status
	;;
    restart)
	## Stop the service and regardless of whether it was
	## running or not, start it again.
	$0 stop
	$0 start

	# Remember status and be quiet
	rc_status
	;;
    force-reload)
	## Signal the daemon to reload its config. Most daemons
	## do this on signal 1 (SIGHUP).
	## If it does not support it, restart.

	echo -n "Reload service XSP "
	## if it supports it:
	#killproc -HUP $XSP_BIN
	#touch /var/run/XSP.pid
	#rc_status -v

	## Otherwise:
	$0 try-restart
	rc_status
	;;
    reload)
	## Like force-reload, but if daemon does not support
	## signaling, do nothing (!)

	# If it supports signaling:
	echo -n "Reload service XSP "
	#killproc -HUP $XSP_BIN
	#touch /var/run/XSP.pid
	#rc_status -v
	
	## Otherwise if it does not support reload:
	rc_failed 3
	rc_status -v
	;;
    status)
	echo -n "Checking for service XSP "
	## Check status with checkproc(8), if process is running
	## checkproc will return with exit status 0.

	# Return value is slightly different for the status command:
	# 0 - service up and running
	# 1 - service dead, but /var/run/  pid  file exists
	# 2 - service dead, but /var/lock/ lock file exists
	# 3 - service not running (unused)
	# 4 - service status unknown :-(
	# 5--199 reserved (5--99 LSB, 100--149 distro, 150--199 appl.)
	
	# NOTE: checkproc returns LSB compliant status values.
	#checkproc $XSP_BIN
	# NOTE: rc_status knows that we called this init script with
	# "status" option and adapts its messages accordingly.
	
	XSP_PROC=`ps -eo pid,cmd | grep /usr/lib/xsp/1.0/xsp.exe | grep -v grep | cut -d ' ' -f1`
	
	if [ -z $XSP_PROC ]
	then
		XSP_PROC=`ps -eo pid,cmd | grep -v grep | grep /usr/lib/xsp/1.0/xsp.exe | cut -d ' ' -f2`
	fi
	
	if [ -n "$XSP_PROC" ]
	then
		return 0
	else
		return 1
	fi
	rc_status -v
	;;
    probe)
	## Optional: Probe for the necessity of a reload, print out the
	## argument to this init script which is required for a reload.
	## Note: probe is not (yet) part of LSB (as of 1.9)

	#test /etc/XSP/XSP.conf -nt /var/run/XSP.pid && echo reload
	echo "Probe is not supported"
	rc_failed 3
	rc_status -v
	;;
    *)
	echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload|probe}"
	exit 1
	;;
esac
rc_exit