Python - Concurrency and Networks(Remote Procedure Calls(RPCs), xmlrpc module)

Introducing Python
Modern Computing in Simple Packages
(O'Reilly Media)
Bill Lubanovic (著)

開発環境

• OS X Yosemite - Apple (OS)
• Emacs (CUI)、BBEdit - Bare Bones Software, Inc. (GUI) (Text Editor)
• Python 3.4 (プログラミング言語)

Introducing Python: Modern Computing in Simple Packages(Bill Lubanovic (著)、 O'Reilly Media)のChapter 11(Concurrency and Networks)、Things to Do 11.3.を解いてみる。

Things to Do 11.3.

コード(Eacs, BBEdit)

server

#!/usr/bin/env python3
#-*- coding: utf-8 -*-

import datetime
import xmlrpc.server

def func(msg):
    print('recieved', msg)
    if msg == 'time':
        now = datetime.datetime.now()
        return datetime.datetime.isoformat(now)
    else:
        return '...'
        
server_address = ('localhost', 6789)
server = xmlrpc.server.SimpleXMLRPCServer(server_address)
server.register_function(func, 'func')
server.serve_forever()

client

#!/usr/bin/env python3
#-*- coding: utf-8 -*-

import xmlrpc.client

server_address = ('localhost', 6789)
proxy = xmlrpc.client.ServerProxy('http://{0}:{1}/'.format(*server_address))

msg = ''
while True:
    msg = input()
    if msg == 'q':
        break
    print('send', msg)
    print(proxy.func(msg))

入出力結果(Terminal, IPython)

server

$ ./sample3_server.py
recieved time
127.0.0.1 - - [09/May/2015 16:29:34] "POST / HTTP/1.1" 200 -
recieved Hello
127.0.0.1 - - [09/May/2015 16:29:40] "POST / HTTP/1.1" 200 -
recieved time
127.0.0.1 - - [09/May/2015 16:29:41] "POST / HTTP/1.1" 200 -
  C-c C-cTraceback (most recent call last):
  File "./sample3_server.py", line 18, in <module>
    server.serve_forever()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/socketserver.py", line 236, in serve_forever
    poll_interval)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/socketserver.py", line 154, in _eintr_retry
    return func(*args)
KeyboardInterrupt
$

client

$ ./sample3_client.py
time
send time
2015-05-09T16:29:34.755010
Hello
send Hello
...
time
send time
2015-05-09T16:29:41.943005
q
$