Debian gunicorn init.d script

gunicorn-initd-script

#!/bin/sh
### BEGIN INIT INFO
# Provides:          webapp
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: gunicorn init.d script for ubuntu and debian
# Description:       gunicorn init.d script for running gunicorn on ubuntu or debian based systems
#                    start script using `/etc/init.d/webapp start`
### END INIT INFO
# Author: Matt Seymour <mattaseymour@gmail.com>

ADDRESS='127.0.0.1'
PYTHON="/home/test/.env/targetting/bin/python"
GUNICORN="/home/test/.env/targetting/bin/gunicorn"
PROJECTDIR="/home/test/webapp"

SERVER_PROJECTID='8000'
SERVER_PID="$PROJECTDIR/$SERVER_PROJECTID.pid"

start_server () {
  if [ -f $1 ]; then
    #pid exists, check if running
    if [ "$(ps -p `cat $1` | wc -l)" -gt 1 ]; then
       echo "Server already running at ${ADDRESS}:${2}"
       return
    fi
  fi
  echo "starting ${ADDRESS}:${2}"
  $GUNICORN -c $PROJECTDIR/gunicorn_settings.py -p $SERVER_PID  wsgi:application
}

stop_server (){
  if [ -f $1 ] && [ "$(ps -p `cat $1` | wc -l)" -gt 1 ]; then
    echo "stopping server ${ADDRESS}:${2}"
    kill -9 `cat $1`
    rm $1
  else 
    if [ -f $1 ]; then
      echo "server at address ${ADDRESS}:${2} not running"
    else
      echo "No pid file found for server ${ADDRESS}:${2}"
    fi
  fi
}

case "$1" in
'start')
  start_server $SERVER_PID $SERVER_PROJECTID
  ;;
'stop')
  stop_server $SERVER_PID $SERVER__PROJECTID
  ;;
'restart')
  echo "restarting gunicorn daemon process"
  stop_server $SERVER_PID $SERVER_PROJECTID
  sleep 2
  start_server $SERVER_PID $SERVER_PROJECTID
  echo "done restarting"
  ;;
*)
  echo "Usage: $0 { start | stop | restart }"
  ;;
esac

exit 0
;