ActionController::Live puma + nginx in 2 minutes

ActionController::Live puma + nginx in 2 minutes

Start Puma
RAILS_ENV=development bundle exec puma -C ./config/puma.rb

curl -i http://localhost:3001/events/141/check
output:
data: {"time":"2014-05-25 16:41:39"}

data: {"time":"2014-05-25 16:41:40"}

data: {"time":"2014-05-25 16:41:41"}

data: {"time":"2014-05-25 16:41:42"}

data: {"time":"2014-05-25 16:41:43"}

done!!

comment_posted.rb

#model/concerns/reloader/comment_posted.rb
require 'json'

module Reloader
  class CommentPosted
    def initialize io
      @io = io
    end

    def write object, options = {}
      options.each do |k,v|
        @io.write "#{k}: #{v}\n"
      end
      @io.write "data: #{JSON.dump(object)}\n\n"
    end

    def close
      @io.close
    end
  end
end

controller.rb

 include Reloader
  include ActionController::Live

  def check
    # SSE expects the `text/event-stream` content type
    response.headers['Content-Type'] = 'text/event-stream'

    sse = Reloader::CommentPosted.new(response.stream)

    begin
      loop do
        sse.write({ :time => Time.now })
        sleep 1
      end
    rescue IOError
      # When the client disconnects, we'll get an IOError on write
    ensure
      sse.close
    end
  end

nginx.config

#user  nobody;
worker_processes  2;
worker_rlimit_nofile 8192;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    client_max_body_size 10M;
    passenger_root /home/usr/.rvm/gems/ruby-2.1.1/gems/passenger-4.0.37;
    passenger_ruby /home/usr/.rvm/gems/ruby-2.1.1/wrappers/ruby;
    passenger_app_env development;
    include       mime.types;
    default_type  application/octet-stream;


    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;
    tcp_nodelay        on;

    gzip  on;

upstream appname {
  server unix:///home/usr/sites/site/tmp/puma/appname-puma.sock;
}

server {
        listen       80;
        listen       3001  default_server;
        server_name  usr.site.com;
        passenger_ruby /home/usr/.rvm/gems/ruby-2.1.1/wrappers/ruby;

        location / {
	    root /home/usr/sites/sites/public;
            passenger_enabled on;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
     }

}

puma.rb

#config/puma.rb
#!/usr/bin/env puma

# start puma with:
# RAILS_ENV=production bundle exec puma -C ./config/puma.rb

require 'pathname'

APP_PATH  = Pathname.new('/home/dir/sites/')
CURRENT   = APP_PATH.join('app_dir')
SHARED    = APP_PATH.join('app_dir')
socket    = "unix://" + CURRENT.join('tmp/sockets/puma.sock').to_s

# See Puma::Configuration::DSL
bind        socket
pidfile     SHARED.join("pids/puma.pid")
threads     1, 16
state_path  SHARED.join('pids/puma.state')
directory   CURRENT
rackup "config.ru"