Sinatra file server.

Simple sinatra file server. Prepared to use with rvm, capistrano and unicorn.

Steps to install:

1. Run on production server: gem install sinatra unicorn
2. Rename Capfile.example to Capfile and set your server parameters.
3. On local computer: cap setup && cap deploy
4. Don't forget to copy current/config/secret.yml.example to shared/config/secret.yml on your production server and set your secret variable.
5. On production server copy current/config/unicorn.rb.example to shared/config/unicorn.rb.
6. cap deploy:start

/etc/init.d/file_server looks like this:

#! /bin/sh
### BEGIN INIT INFO
# Provides:          file_server
# Required-Start:    
# Required-Stop:     
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Example initscript
# Description:       This file should be used to construct scripts to be
#                    placed in /etc/init.d.
### END INIT INFO

# Do NOT "set -e"

# PATH should only include /usr/* if it runs after the mountnfs.sh script
RUBY_VERSION=1.9.2-p290
PATH=/home/deploy/.rvm/gems/ruby-${RUBY_VERSION}/bin:/home/deploy/.rvm/gems/ruby-${RUBY_VERSION}@global/bin:/home/deploy/.rvm/rubies/ruby-${RUBY_VERSION}/bin:/home/deploy/.rvm/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
DESC=""
NAME=file_server
APP_DIR=/var/www/$NAME
DAEMON=/home/deploy/.rvm/gems/ruby-$RUBY_VERSION/bin/unicorn_rails
DAEMON_ARGS="-c $APP_DIR/current/config/unicorn.rb -D -E production"
BUNDLE=/home/deploy/.rvm/gems/ruby-$RUBY_VERSION/bin/bundle
UNICORN_PID=$APP_DIR/shared/unicorn.pid
SCRIPTNAME=/etc/init.d/$NAME

# Exit if the package is not installed
[ -x "$DAEMON" ] || exit 0

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh

# Define LSB log_* functions.
# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.
. /lib/lsb/init-functions

do_start()
{
	if [ `whoami` = "deploy" ]; then
		cd $APP_DIR/current && $BUNDLE exec $DAEMON $DAEMON_ARGS
	else
		su - deploy -c "PATH=$PATH cd $APP_DIR/current && \
			$BUNDLE exec $DAEMON $DAEMON_ARGS"
	fi
	return 0
}

do_stop()
{
	kill `cat $UNICORN_PID`
}

#
# Function that sends a SIGHUP to the daemon/service
#
do_reload() {
	kill -USR2 `cat $UNICORN_PID`
}

case "$1" in
  start)
	[ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
	do_start
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  stop)
	[ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
	do_stop
	case "$?" in
		0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
		2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
	esac
	;;
  status)
       status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
       ;;
  restart|force-reload)
	#
	# If the "reload" option is implemented then remove the
	# 'force-reload' alias
	#
	log_daemon_msg "Restarting $DESC" "$NAME"
	do_stop
	case "$?" in
	  0|1)
		do_start
		case "$?" in
			0) log_end_msg 0 ;;
			1) log_end_msg 1 ;; # Old process is still running
			*) log_end_msg 1 ;; # Failed to start
		esac
		;;
	  *)
	  	# Failed to stop
		log_end_msg 1
		;;
	esac
	;;
  *)
	echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
	exit 3
	;;
esac

Nginx example configuration:

server {
    listen         80;
    server_name    download.example.com;
    root           /var/www/file_server/current/public;
    try_files      $uri @unicorn;
    charset        UTF-8;
    server_tokens  off;
    #gzip             on;
    #gzip_min_length  10;
    # gzip_proxied     expired no-cache no-store private auth;


    location ~* ^/private/(.*)$ {
    	internal;

    	set $private_url http://example.com/private_area/$1;
    	proxy_max_temp_file_size 0;
    	proxy_pass $private_url;
    	#proxy_ignore_headers X-Accel-Redirect;
    }

    location @unicorn {
        proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header  Host $http_host;
        proxy_pass        http://unix:/var/www/file_server/shared/unicorn.sock;
        proxy_redirect    off;
    }
}