lib/popcorn: introduce middleware examples

[nit.git] / lib / popcorn / examples / middlewares / example_advanced_logger.nit

diff --git a/lib/popcorn/examples/middlewares/example_advanced_logger.nit b/lib/popcorn/examples/middlewares/example_advanced_logger.nit
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+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Copyright 2016 Alexandre Terrasa <alexandre@moz-code.org>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import popcorn
+import realtime
+
+redef class HttpRequest
+       # Time that request was received by the Popcorn app.
+       var timer: nullable Clock = null
+end
+
+class RequestTimeHandler
+       super Handler
+
+       redef fun all(req, res) do req.timer = new Clock
+end
+
+class LogHandler
+       super Handler
+
+       redef fun all(req, res) do
+               var timer = req.timer
+               if timer != null then
+                       print "{req.method} {req.uri} {res.color_status} ({timer.total})"
+               else
+                       print "{req.method} {req.uri} {res.color_status}"
+               end
+       end
+end
+
+class HelloHandler
+       super Handler
+
+       redef fun get(req, res) do res.send "Hello World!"
+end
+
+var app = new App
+app.use("/*", new RequestTimeHandler)
+app.use("/", new HelloHandler)
+app.use("/*", new LogHandler)
+app.listen("localhost", 3000)