#!/bin/bash

#

# supervisord This scripts turns supervisord on

#

# Author: Mike McGrath <mmcgrath@redhat.com> (based off yumupdatesd)

# Jason Koppe <jkoppe@indeed.com> adjusted to read sysconfig,

# use supervisord tools to start/stop, conditionally wait

# for child processes to shutdown, and startup later

# Mikhail Mingalev <mingalevme@gmail.com> Merged

# redhat-init-jkoppe and redhat-sysconfig-jkoppe, and

# made the script "simple customizable".

# Brendan Maguire <maguire.brendan@gmail.com> Added OPTIONS to

# SUPERVISORCTL status call

#

# chkconfig: 345 83 04

#

# description: supervisor is a process control utility. It has a web based

# xmlrpc interface as well as a few other nifty features.

# Script was originally written by Jason Koppe <jkoppe@indeed.com>.

#

# source function library

. /etc/rc.d/init.d/functions

set -a

PREFIX=/usr

SUPERVISORD=$PREFIX/bin/supervisord

SUPERVISORCTL=$PREFIX/bin/supervisorctl

PIDFILE=/var/run/supervisord.pid

CONFFILE="/etc/supervisord.conf"

LOCKFILE=/var/lock/subsys/supervisord

OPTIONS="-c $CONFFILE"

# unset this variable if you don't care to wait for child processes to shutdown before removing the $LOCKFILE-lock

WAIT_FOR_SUBPROCESSES=yes

# remove this if you manage number of open files in some other fashion

ulimit -n 96000

RETVAL=0

# source default env vars

if [ -f /etc/default/supervisord ]; then

. /etc/default/supervisord

fi

# source koding env vars

if [ ! -f /etc/sysconfig/supervisord ]; then

exit 6

fi

. /etc/sysconfig/supervisord

running_pid()

{

# Check if a given process pid's cmdline matches a given name

pid=$1

name=$2

[ -z "$pid" ] && return 1

[ ! -d /proc/$pid ] && return 1

(cat /proc/$pid/cmdline | tr "\000" "\n"|grep -q $name) || return 1

return 0

}

running()

{

# Check if the process is running looking at /proc

# (works for all users)

# No pidfile, probably no daemon present

[ ! -f "$PIDFILE" ] && return 1

# Obtain the pid and check it against the binary name

pid=`cat $PIDFILE`

running_pid $pid $SUPERVISORD || return 1

return 0

}

start() {

echo "Starting supervisord: "

if [ -e $PIDFILE ]; then

echo "ALREADY STARTED"

return 1

fi

# start supervisord with options from sysconfig (stuff like -c)

$SUPERVISORD $OPTIONS

# show initial startup status

$SUPERVISORCTL $OPTIONS status

# only create the subsyslock if we created the PIDFILE

[ -e $PIDFILE ] && touch $LOCKFILE

}

stop() {

echo -n "Stopping supervisord: "

$SUPERVISORCTL $OPTIONS shutdown

if [ -n "$WAIT_FOR_SUBPROCESSES" ]; then

echo "Waiting roughly 60 seconds for $PIDFILE to be removed after child processes exit"

for sleep in 2 2 2 2 4 4 4 4 8 8 8 8 last; do

if [ ! -e $PIDFILE ] ; then

echo "Supervisord exited as expected in under $total_sleep seconds"

break

else

if [[ $sleep -eq "last" ]] ; then

echo "Supervisord still working on shutting down. We've waited roughly 60 seconds, we'll let it do its thing from here"

return 1

else

sleep $sleep

total_sleep=$(( $total_sleep + $sleep ))

fi

fi

done

fi

# always remove the subsys. We might have waited a while, but just remove it at this point.

rm -f $LOCKFILE

}

restart() {

stop

start

}

case "$1" in

start)

start

RETVAL=$?

;;

stop)

stop

RETVAL=$?

;;

restart|force-reload)

restart

RETVAL=$?

;;

reload)

$SUPERVISORCTL $OPTIONS reload

RETVAL=$?

;;

condrestart)

[ -f $LOCKFILE ] && restart

RETVAL=$?

;;

status)

$SUPERVISORCTL $OPTIONS status

if running ; then

RETVAL=0

else

RETVAL=1

fi

;;

*)

echo $"Usage: $0 {start|stop|status|restart|reload|force-reload|condrestart}"

exit 1

esac

exit $RETVAL