let rake can redirect to the url when response is 301

lib/tasks/feeds_tasks.rake

@@ -7,12 +7,26 @@ namespace :feeds_module do
       feed_directory = File.join(main_directory.to_s, site_feed.id.to_s)
       FileUtils.mkdir_p(feed_directory) if !File.exists?(feed_directory)
       uri = URI(site_feed.feed_url)
-      res = Net::HTTP.start(uri.host, uri.port,:use_ssl => uri.scheme == 'https',open_timeout: 60,read_timeout: 60) do |http|
+      res_net = Net::HTTP.start(uri.host, uri.port,:use_ssl => uri.scheme == 'https',open_timeout: 60,read_timeout: 60) do |http|
         req = Net::HTTP::Get.new(uri)
-        http.request(req).body rescue ''
+        http.request(req)
       end
+      if (res_net.code == '301' return true)
+        begin
+          uri = URI(res_net['location'])
+          res_net = Net::HTTP.start(uri.host, uri.port,:use_ssl => uri.scheme == 'https',open_timeout: 60,read_timeout: 60) do |http|
+            req = Net::HTTP::Get.new(uri)
+            http.request(req)
+          end
+        rescue => e
+          res_net = ''
+          puts e
+          puts e.backtrace
+        end
+      end
+      res = res_net.body rescue ''
       File.open(File.join(feed_directory.to_s,site_feed.feed_uid + ".json"),"w") do |file|
-        res.force_encoding("utf-8")
+        res = res.force_encoding("utf-8") rescue ''
         file.write(res)
       end
       site_feed.save