Added two new middleware classes (UserAgent & Cache)

lib/spore/middleware/cache.rb

@@ -0,0 +1,46 @@
+# encoding: utf-8
+require 'spore/middleware'
+
+class Spore ; class Middleware 
+	class Cache < Spore::Middleware
+
+		CACHE_USED = 'sporex.cache.used'
+		REQUEST_PATH = 'spore.request_path'
+
+		class UnsupportedStorage < Exception ; end
+
+		# Storage parameter must respond at least to the same interface as the
+		# Enumerable mixin plus [] and []= methods.
+		# Thus, you could simply pass a hash to this class :-)
+		def expected_params
+			[ :storage ]
+		end
+
+		def process_request(env)
+			env[CACHE_USED] = false
+			key = env[REQUEST_PATH]
+
+			# If cache containts request && cache is fresh
+			if self.storage.include? key then
+				# get response from cache
+				env[CACHE_USED] = true
+				resp = self.storage[key]
+				return resp
+			else
+				# really make the request
+				env[CACHE_USED] = false
+				return nil
+			end
+		end
+
+		def process_response(resp, env)
+			key = env[REQUEST_PATH]
+			if not env[CACHE_USED] then
+				# store to cache
+				self.storage[key] = resp
+			end
+			return resp
+		end
+
+	end
+end ; end

lib/spore/middleware/useragent.rb

@@ -0,0 +1,26 @@
+# encoding: utf-8
+require 'spore/middleware'
+
+class Spore
+  class Middleware 
+    class UserAgent < Spore::Middleware
+
+      def expected_params
+        [ :useragent ]
+      end
+
+      def process_request(env)
+        env['spore.request_headers'] << { 
+          :name => "User-Agent", 
+          :value => self.useragent 
+        }
+        return nil
+      end
+
+      def process_response(resp, env)
+        resp
+      end
+
+    end
+  end 
+end