Make static faster as we don't have to serve multiple paths anymore.

actionpack/lib/action_dispatch/middleware/static.rb

@@ -2,25 +2,23 @@
 
 module ActionDispatch
   class FileHandler
-    def initialize(at, root)
-      @at, @root     = at.chomp('/'), root.chomp('/')
-      @compiled_at   = @at.blank? ? nil : /^#{Regexp.escape(at)}/
+    def initialize(root)
+      @root          = root.chomp('/')
       @compiled_root = /^#{Regexp.escape(root)}/
       @file_server   = ::Rack::File.new(@root)
     end
 
     def match?(path)
       path = path.dup
-      if !@compiled_at || path.sub!(@compiled_at, '')
-        full_path = path.empty? ? @root : File.join(@root, ::Rack::Utils.unescape(path))
-        paths = "#{full_path}#{ext}"
 
-        matches = Dir[paths]
-        match = matches.detect { |m| File.file?(m) }
-        if match
-          match.sub!(@compiled_root, '')
-          match
-        end
+      full_path = path.empty? ? @root : File.join(@root, ::Rack::Utils.unescape(path))
+      paths = "#{full_path}#{ext}"
+
+      matches = Dir[paths]
+      match = matches.detect { |m| File.file?(m) }
+      if match
+        match.sub!(@compiled_root, '')
+        match
       end
     end
 
@@ -39,9 +37,9 @@ def ext
   class Static
     FILE_METHODS = %w(GET HEAD).freeze
 
-    def initialize(app, roots)
+    def initialize(app, path)
       @app = app
-      @file_handlers = create_file_handlers(roots)
+      @file_handler = FileHandler.new(path)
     end
 
     def call(env)
@@ -49,24 +47,13 @@ def call(env)
       method = env['REQUEST_METHOD']
 
       if FILE_METHODS.include?(method)
-        @file_handlers.each do |file_handler|
-          if match = file_handler.match?(path)
-            env["PATH_INFO"] = match
-            return file_handler.call(env)
-          end
+        if match = @file_handler.match?(path)
+          env["PATH_INFO"] = match
+          return @file_handler.call(env)
         end
       end
 
       @app.call(env)
     end
-
-    private
-      def create_file_handlers(roots)
-        roots = { '' => roots } unless roots.is_a?(Hash)
-
-        roots.map do |at, root|
-          FileHandler.new(at, root) if File.exist?(root)
-        end.compact
-      end
   end
 end

actionpack/test/dispatch/static_test.rb

@@ -47,35 +47,4 @@ def setup
   end
 
   include StaticTests
-end
-
-class MultipleDirectorisStaticTest < ActiveSupport::TestCase
-  DummyApp = lambda { |env|
-    [200, {"Content-Type" => "text/plain"}, ["Hello, World!"]]
-  }
-  App = ActionDispatch::Static.new(DummyApp,
-            { "/"     => "#{FIXTURE_LOAD_PATH}/public",
-              "/blog" => "#{FIXTURE_LOAD_PATH}/blog_public",
-              "/foo"  => "#{FIXTURE_LOAD_PATH}/non_existing_dir"
-            })
-
-  def setup
-    @app = App
-  end
-
-  include StaticTests
-
-  test "serves files from other mounted directories" do
-    assert_html "/blog/index.html", get("/blog/index.html")
-    assert_html "/blog/index.html", get("/blog/index")
-    assert_html "/blog/index.html", get("/blog/")
-
-    assert_html "/blog/blog.html", get("/blog/blog/")
-    assert_html "/blog/blog.html", get("/blog/blog.html")
-    assert_html "/blog/blog.html", get("/blog/blog")
-
-    assert_html "/blog/subdir/index.html", get("/blog/subdir/index.html")
-    assert_html "/blog/subdir/index.html", get("/blog/subdir/")
-    assert_html "/blog/subdir/index.html", get("/blog/subdir")
-  end
-end
+end
\ No newline at end of file

actionpack/test/template/asset_tag_helper_test.rb

@@ -477,15 +477,6 @@ def test_string_asset_id
     assert_equal %(<img alt="Rails" src="#{expected_path}" />), image_tag("rails.png")
   end
 
-  def test_env_asset_path
-    @controller.config.asset_path = "/assets%s"
-    def @controller.env; @_env ||= {} end
-    @controller.env["action_dispatch.asset_path"] = "/omg%s"
-
-    expected_path = "/assets/omg/images/rails.png"
-    assert_equal %(<img alt="Rails" src="#{expected_path}" />), image_tag("rails.png")
-  end
-
   def test_proc_asset_id
     @controller.config.asset_path = Proc.new do |asset_path|
       "/assets.v12345#{asset_path}"
@@ -495,20 +486,6 @@ def test_proc_asset_id
     assert_equal %(<img alt="Rails" src="#{expected_path}" />), image_tag("rails.png")
   end
 
-  def test_env_proc_asset_path
-    @controller.config.asset_path = Proc.new do |asset_path|
-      "/assets.v12345#{asset_path}"
-    end
-
-    def @controller.env; @_env ||= {} end
-    @controller.env["action_dispatch.asset_path"] = Proc.new do |asset_path|
-      "/omg#{asset_path}"
-    end
-
-    expected_path = "/assets.v12345/omg/images/rails.png"
-    assert_equal %(<img alt="Rails" src="#{expected_path}" />), image_tag("rails.png")
-  end
-
   def test_image_tag_interpreting_email_cid_correctly
     # An inline image has no need for an alt tag to be automatically generated from the cid:
     assert_equal '<img src="cid:thi%25%25sis@acontentid" />', image_tag("cid:thi%25%25sis@acontentid")

railties/lib/rails/application.rb

@@ -161,7 +161,7 @@ def default_middleware_stack
         end
 
         if config.serve_static_assets
-          middleware.use ::ActionDispatch::Static, "/" => paths["public"].first
+          middleware.use ::ActionDispatch::Static, paths["public"].first
         end
 
         middleware.use ::Rack::Lock unless config.allow_concurrency