File to use in /etc/init.d/resque to run resque workers

resque

#!/bin/bash 
### BEGIN INIT INFO
#
# Provides : resque-env
# Required-Start : 
# Required-Stop  : 
# Default-Start     : 2 3 4 5
# Default-Stop      : 0 1 6
# Short-Description : Resque worker via init.d (assumes you have Ruby, and a plugin to allow wildcards in queue names)
# Description : see Short-Description, brah
#
### END INIT INFO

PROG="rake"
NICE_NAME="resque"
PROG_DIR="/usr/local/bin"
USER="ubuntu"
PROG_PATH="/home/$USER/gleam-backoffice/current"
PID_PATH="/home/$USER/gleam-backoffice/shared/pids"
RAILS_ENV="production"

capitalize_first ()          
{
  string0="$@"
  firstchar=${string0:0:1}
  string1=${string0:1}
  FirstChar=`echo "$firstchar" | tr a-z A-Z`
  echo "$FirstChar$string1"  
}

toUpper() {
echo $1 | tr  "[:lower:]" "[:upper:]"
}

RAILS_ENV_1ST=`capitalize_first $RAILS_ENV`
RAILS_ENV_HI=`toUpper $RAILS_ENV`

PROG_ARGS="environment resque:work QUEUE='*'"
PID_FILE="$PID_PATH/$NICE_NAME.pid"

start() {
    if [ -e "$PID_FILE" ]; then
        echo "Error! Resque worker is currently running, or the pid file in $PID_PATH is stale!" 1>&2
        exit 1
    else
        su $USER -c "cd $PROG_PATH && $PROG_DIR/$PROG $PROG_ARGS RAILS_ENV=$RAILS_ENV 2>&1 > $PROG_PATH/log/workers.log &" &

        echo "Starting up resque worker"

        while [[ $WORKER_PID == "" ]]
        do
          WORKER_PID=`ps -ef | grep "Waiting for" | grep -v grep | awk '{ print $2 }'`
          echo -n "."
          sleep 3
        done

        echo $WORKER_PID > "$PID_FILE"
        echo ""
        echo "Resque worker started with PID=$WORKER_PID."
    fi
}

stop() {
    if [ -e "$PID_FILE" ]; then
        echo "PID_FILE ---> $PID_FILE"
        pid=`cat "$PID_FILE"`
        echo "PID ---> $pid"
        kill $pid > /dev/null 2>&1  # not using -9 so as not to have output
        sleep 3 # I should really check if the PID is still up here...
        rm "$PID_FILE"

        echo "Resque worker stopped, brah!"
    else
        echo "Error! Resque worker is not running! C'mon, brah!" 1>&2
        exit 1
    fi
}

if [ "$(id -u)" != "0" ]; then
    echo "This script must be run as root, brah!" 1>&2
    exit 1
fi

case "$1" in
    start)
        start
        exit 0
    ;;
    stop)
        stop
        exit 0
    ;;
    reload|restart|force-reload)
        stop
        start
        exit 0
    ;;
    **)
        echo "Usage: $0 {start|stop|reload}" 1>&2
        exit 1
    ;;
esac