Introduce Rails Metal

  # app/metal/poller.rb
  class Poller < Rails::Rack::Metal
    def call(env)
      if env["PATH_INFO"] =~ /^\/poller/
        [200, {"Content-Type" => "application/json"}, Message.recent.to_json]
      else
        super
      end
    end
  end

* There is a generator to help you get started
    `script/generate metal poller`

* Also, metal bits can be ran standalone with rackup
    `rackup app/metal/poller.rb`

1 files changed, 1 insertions, 0 deletions

diff --git a/railties/lib/rails/rack.rb b/railties/lib/rails/rack.rb
index 90535674e9..f721abddc8 100644
--- a/railties/lib/rails/rack.rb
+++ b/railties/lib/rails/rack.rb
@@ -2,6 +2,7 @@ module Rails
   module Rack
     autoload :Debugger, "rails/rack/debugger"
     autoload :Logger, "rails/rack/logger"
+    autoload :Metal, "rails/rack/metal"
     autoload :Static, "rails/rack/static"
   end
 end