xsetbg-wsgi.py

   1 #! /usr/bin/env python
   2 """XSetBg (WSGI version)
   3
   4 """
   5
   6 __version__ = "$Revision$"[11:-2]
   7 __revision__ = "$Id$"[5:-2]
   8 __date__ = "$Date$"[7:-2]
   9
  10 __author__ = "Oleg Broytman <phd@phdru.name>"
  11 __copyright__ = "Copyright (C) 2000-2011 PhiloSoft Design"
  12 __license__ = "GNU GPL"
  13
  14
  15 from wsgiref import simple_server
  16 from wsgiref.handlers import SimpleHandler
  17 from wsgiref.simple_server import WSGIServer, make_server
  18 simple_server.ServerHandler = SimpleHandler # Stop logging to stdout
  19
  20 from xsetbg import host, port, change as _change
  21
  22
  23 commands = {}
  24
  25 def published(func):
  26     commands[func.__name__] = func
  27     return func
  28
  29 @published
  30 def change(force=False):
  31     _change()
  32
  33 @published
  34 def force():
  35     _change(force=True)
  36
  37 @published
  38 def stop():
  39     QuitWSGIServer._quit_flag = True
  40
  41
  42 class QuitWSGIServer(WSGIServer):
  43     _quit_flag = False
  44
  45     def serve_forever(self):
  46         while not self._quit_flag:
  47             self.handle_request()
  48
  49 def app(env, start_response):
  50     command = env['PATH_INFO'][1:] # Remove the leading slash
  51     if command not in commands:
  52         status = '404 Not found'
  53         response_headers = [('Content-type', 'text/plain')]
  54         start_response(status, response_headers)
  55         return ['The command was not found.\n']
  56
  57     try:
  58         commands[command]()
  59     except:
  60         status = '500 Error'
  61         response_headers = [('Content-type', 'text/plain')]
  62         start_response(status, response_headers)
  63         return ['Error occured!\n']
  64
  65     status = '200 OK'
  66     response_headers = [('Content-type', 'text/plain')]
  67     start_response(status, response_headers)
  68     return ['Ok\n']
  69
  70 force()
  71 httpd = make_server(host, port, app, server_class=QuitWSGIServer)
  72 httpd.serve_forever()