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#!/bin/sh
# Copyright (c) 1995-2004 SUSE Linux AG, Nuernberg, Germany.
#
# Author: Andreas Schneider <asn@cynapses.org>
#
# /etc/init.d/mongodb
#   and its symbolic link
# /(usr/)sbin/rcmongodb
#
# Template system startup script for some example service/daemon mongodb
#
# LSB compatible service control script; see http://www.linuxbase.org/spec/
# 
# Note: This template uses functions rc_XXX defined in /etc/rc.status on
# UnitedLinux/SUSE/Novell based Linux distributions. If you want to base your
# script on this template and ensure that it works on non UL based LSB 
# compliant Linux distributions, you either have to provide the rc.status
# functions from UL or change the script to work without them.
# See skeleton.compat for a template that works with other distros as well.
#
### BEGIN INIT INFO
# Provides:          mongodb
# Required-Start:    $syslog $remote_fs
# Should-Start:      $time ypbind smtp
# Required-Stop:     $syslog $remote_fs
# Should-Stop:       ypbind smtp
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: Start the mongodb a document-oriented database.
# Description:       Start the mongodb a document-oriented database.
### END INIT INFO

# Check for missing binaries (stale symlinks should not happen)
# Note: Special treatment of stop for LSB conformance
mongodb_BIN=/usr/sbin/mongod
mongodb_CONFIG=/etc/mongodb.conf

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

# This verifies the existence of numactl as well as testing that the command works
numactl_BIN=/usr/bin/numactl
numactl_ARGS="--interleave=all"
if [ -x ${numactl_BIN} ] && ${numactl_BIN} ${numactl_ARGS} ls / >/dev/null 2>/dev/null
then
    numactl="${numactl_BIN} ${numactl_ARGS}"
else
    numactl=""
fi

# avoid hitting virtual memory limits with mmaps (bnc#876326)
ulimit -v unlimited

# Source LSB init functions
# providing start_daemon, killproc, pidofproc, 
# log_success_msg, log_failure_msg and log_warning_msg.
# This is currently not used by UnitedLinux based distributions and
# not needed for init scripts for UnitedLinux only. If it is used,
# the functions from rc.status should not be sourced or used.
#. /lib/lsb/init-functions

# 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 "$1" in
    start)
	echo -n "Starting mongodb "
	## Start daemon with startproc(8). If this fails
	## the return value is set appropriately by startproc.
	LOGDIR="`sed -n 's|^[[:blank:]]*logpath[[:blank:]]*=[[:blank:]]*||p' "$mongodb_CONFIG" | tail -n 1`"
	LOGDIR="`dirname "$LOGDIR"`"
	if [ "$LOGDIR" ] && [ \! -e "$LOGDIR" ]; then
		mkdir -p "$LOGDIR"
		chown mongodb:mongodb "$LOGDIR"
	fi
	DBDIR="`sed -n 's|^[[:blank:]]*dbpath[[:blank:]]*=[[:blank:]]*||p' "$mongodb_CONFIG" | tail -n 1`"
	if [ "$DBDIR" ] && [ \! -e "$DBDIR" ]; then
		mkdir -p "$DBDIR"
		chown mongodb:mongodb "$DBDIR"
	fi
	${numactl} /sbin/startproc -u mongodb -g mongodb ${mongodb_BIN} --quiet \
			-f "$mongodb_CONFIG"

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

/sbin/killproc -TERM $mongodb_BIN

# 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 the service if it
	## is running.

echo -n "Reload service mongodb "
	## if it supports it:
	/sbin/killproc -HUP ${mongodb_BIN}
	#touch /var/run/mongodb.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 mongodb "
	/sbin/killproc -HUP ${mongodb_BIN}
	#touch /var/run/mongodb.pid
	rc_status -v
	
	## Otherwise if it does not support reload:
	#rc_failed 3
	#rc_status -v
	;;
    status)
	echo -n "Checking for service mongodb "
	## 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.
	/sbin/checkproc ${mongodb_BIN}
	# NOTE: rc_status knows that we called this init script with
	# "status" option and adapts its messages accordingly.
	rc_status -v
	;;
    *)
	echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload}"
	exit 1
	;;
esac
rc_exit