Reduce the cost of using ActionController::Http significantly by:

  * Removing the dependency on AD::Request and AD::Response
  * Moving the logic for the request and response object
    into a new module that is included by default.
  * Changing Renderer and Redirector to use self.headers,
    self.content_type, and self.status, which have very basic
    default implementations on AC::Http. When RackConvenience
    is included (which it is by default on AC::Base), the full
    Request/Response logic is used instead of the simple logic.

1 files changed, 29 insertions, 13 deletions

diff --git a/actionpack/lib/action_controller/new_base/http.rb b/actionpack/lib/action_controller/new_base/http.rb
index 2525e221a6..7ff490bb9c 100644
--- a/actionpack/lib/action_controller/new_base/http.rb
+++ b/actionpack/lib/action_controller/new_base/http.rb
@@ -6,7 +6,7 @@ module ActionController
     abstract!
     
     # :api: public
-    attr_internal :request, :response, :params
+    attr_internal :params, :env
 
     # :api: public
     def self.controller_name
@@ -36,32 +36,48 @@ module ActionController
       controller.call(env).to_rack
     end
     
-    delegate :headers, :to => "@_response"
+    # The details below can be overridden to support a specific
+    # Request and Response object. The default ActionController::Base
+    # implementation includes RackConvenience, which makes a request
+    # and response object available. You might wish to control the
+    # environment and response manually for performance reasons.
 
-    def params
-      @_params ||= @_request.parameters
+    attr_internal :status, :headers, :content_type
+
+    def initialize(*)
+      @_headers = {}
+      super
+    end
+
+    # Basic implements for content_type=, location=, and headers are
+    # provided to reduce the dependency on the RackConvenience module
+    # in Renderer and Redirector.
+
+    def content_type=(type)
+      headers["Content-Type"] = type.to_s
+    end
+
+    def location=(url)
+      headers["Location"] = url
     end
     
     # :api: private
     def call(name, env)
-      @_request = ActionDispatch::Request.new(env)
-      @_response = ActionDispatch::Response.new
-      @_response.request = request
+      @_env = env
       process(name)
       to_rack
     end
     
+    # :api: private
+    def to_rack
+      [status, headers, response_body]
+    end
+
     def self.action(name)
       @actions ||= {}
       @actions[name.to_s] ||= proc do |env|
         new.call(name, env)
       end
     end
-    
-    # :api: private
-    def to_rack
-      @_response.prepare!
-      @_response.to_a
-    end
   end
 end