slow_server.py

"""Simple server for testing code against a slow-responding server.

requests to '/INTEGER' are replied to with 'INTEGER',
after an artificial delay.

"""
import time
from tornado import web, ioloop, options, httpserver

options.define("port", default=8888, help="run on the given port", type=int)
options.define("delay", default=0.2, help="delay builtin to each request", type=float)

class SlowHandler(web.RequestHandler):
    
    @web.asynchronous
    def get(self, page):
        loop = ioloop.IOLoop.instance()
        loop.add_timeout(loop.time() + self.settings['delay'],
            lambda : self.finish(page),
        )

if __name__ == '__main__':
    options.parse_command_line()
    app = web.Application([
        (r'/(\d+)', SlowHandler)
    ], delay=options.options.delay,
    )
    http_server = httpserver.HTTPServer(app)
    http_server.listen(options.options.port)
    ioloop.IOLoop.instance().start()
    

threadpool.ipynb