| #!/usr/bin/python |
| # |
| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you 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. |
| # |
| |
| from __future__ import print_function |
| import tornado.ioloop |
| from tornado_app import TornadoApp |
| |
| # The proton reactor provides a general purpose event processing |
| # library for writing reactive programs. A reactive program is defined |
| # by a set of event handlers. An event handler is just any class or |
| # object that defines the "on_<event>" methods that it cares to |
| # handle. |
| |
| class Program: |
| |
| # The reactor init event is produced by the reactor itself when it |
| # starts. |
| def on_reactor_init(self, event): |
| print("Hello, World!") |
| |
| # The TornadoApp integrates a Reactor into tornado's ioloop. |
| TornadoApp(Program()) |
| |
| # Now the tornado main loop will behave like the reactor's main loop. |
| tornado.ioloop.IOLoop.instance().start() |