Fibonacci microservice using Python & Tornado.

fib_micro_service.py

import tornado.web
import tornado.ioloop
from tornado.options import define, options

define('port', default=45000, help='try running on a given port', type=int)

def fib():
    a, b = 1, 1
    while True:
        yield a
        a, b = b, a+b


class IndexHandler(tornado.web.RequestHandler):
    def get(self):
        self.write('Fibonacci microservice.')


class NextFibHandler(tornado.web.RequestHandler):
    fib_iter = fib()

    def get(self):
        response = str(next(self.fib_iter))
        self.write(response)


class First1000Handler(tornado.web.RequestHandler):
    def get(self):
        res = []
        fib_iter = fib()
        for i in range(0, 1000):
            res.append(next(fib_iter))
        self.write(str(res))


def make_app():
    return tornado.web.Application([
        (r'/', IndexHandler),
        (r'/next', NextFibHandler),
        (r'/onethousand', First1000Handler)
    ])


if __name__ == '__main__':
    tornado.options.parse_command_line()
    app = make_app()
    app.listen(options.port)
    print('==================================')
    print('Starting Fibanacci Microservice...')
    print('Listening on port: ' + str(options.port))
    print('\r\n')
    tornado.ioloop.IOLoop.current().start()