#! /bin/sh
### BEGIN INIT INFO
# Provides:          FastCGI servers for Django
# Required-Start:    networking
# Required-Stop:     networking
# Default-Start:     2 3 4 5
# Default-Stop:      S 0 1 6
# Short-Description: Start FastCGI servers with Django.
# Description:       Django, in order to operate with FastCGI, must be started
#                    in a very specific way with manage.py. This must be done
#                    for each DJango web server that has to run.
### END INIT INFO
#
# Author:  Guillermo Fernandez Castellanos
#          <guillermo.fernandez.castellanos AT gmail.com>.
#
# Changed: Jannis Leidel
#          <jannis AT leidel.info>
#
# Version: @(#)fastcgi 0.2 13-Jun-2007 jannis AT leidel.info
#

#### SERVER SPECIFIC CONFIGURATION

# django project names/directories
DJANGO_SITES="myapp myapp2 myapp3"

# path to the directory with your django projects
SITES_PATH=/path/to/django/projects

# path to the directory for socket and pid files
RUNFILES_PATH=$SITES_PATH/run

# please make sure this is NOT root
# local user prefered, www-data accepted
RUN_AS=www-data

# maximum requests before fast-cgi process respawns
# (a.k.a. get killed and let live)
MAXREQUESTS=1000

#### DO NOT CHANGE ANYTHING AFTER THIS LINE!
set -e

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
DESC="FastCGI servers"
NAME=$0
SCRIPTNAME=/etc/init.d/$NAME
mkdir -p $RUNFILES_PATH
chown -R $RUN_AS:$RUN_AS $RUNFILES_PATH

#
#       Function that starts the daemon/service.
#
d_start()
{
    # Starting all Django FastCGI processes
    # PORT=$PORT_START
    for SITE in $DJANGO_SITES
    do
        echo -n ", $SITE"
        if [ -f $RUNFILES_PATH/$SITE.pid ]; then
            echo -n " already running"
        else
            start-stop-daemon --start --quiet \
                       --pidfile $RUNFILES_PATH/$SITE.pid \
                       --chuid $RUN_AS --exec /usr/bin/env -- python \
                       $SITES_PATH/$SITE/manage.py runfcgi \
                       protocol=fcgi method=threaded maxrequests=$MAXREQUESTS \
                       socket=$RUNFILES_PATH/$SITE.socket \
                       pidfile=$RUNFILES_PATH/$SITE.pid
            chmod 400 $RUNFILES_PATH/$SITE.pid
        fi
        sleep 1
    done
}

#
#       Function that stops the daemon/service.
#
d_stop() {
    # Killing all Django FastCGI processes running
    for SITE in $DJANGO_SITES
    do
        echo -n ", $SITE"
        start-stop-daemon --stop --quiet --pidfile $RUNFILES_PATH/$SITE.pid \
                          || echo -n " not running"
        if [ -f $RUNFILES_PATH/$SITE.pid ]; then
           rm -f $RUNFILES_PATH/$SITE.pid
        fi
        sleep 1
    done
}

ACTION="$1"
case "$ACTION" in
    start)
        echo -n "Starting $DESC: $NAME"
        d_start
        echo "."
        ;;

    stop)
        echo -n "Stopping $DESC: $NAME"
        d_stop
        echo "."
        ;;

    restart|force-reload)
        echo -n "Restarting $DESC: $NAME"
        d_stop
        sleep 2
        d_start
        echo "."
        ;;

    *)
        echo "Usage: $NAME {start|stop|restart|force-reload}" >&2
        exit 3
        ;;
esac

exit 0