xsetbg-wsgi.py

   1 #! /usr/bin/env python
   2 """XSetBg (WSGI version)
   3
   4 """
   5
   6 __author__ = "Oleg Broytman <phd@phdru.name>"
   7 __copyright__ = "Copyright (C) 2000-2012 PhiloSoft Design"
   8 __license__ = "GNU GPL"
   9
  10
  11 from wsgiref import simple_server
  12 from wsgiref.handlers import SimpleHandler
  13 from wsgiref.simple_server import WSGIServer, make_server
  14 simple_server.ServerHandler = SimpleHandler # Stop logging to stdout
  15
  16 from xsetbg import host, port, change as _change
  17
  18
  19 commands = {}
  20
  21 def published(func):
  22     commands[func.__name__] = func
  23     return func
  24
  25 @published
  26 def change(force=False):
  27     _change()
  28
  29 @published
  30 def force():
  31     _change(force=True)
  32
  33 @published
  34 def stop():
  35     QuitWSGIServer._quit_flag = True
  36
  37
  38 class QuitWSGIServer(WSGIServer):
  39     _quit_flag = False
  40
  41     def serve_forever(self):
  42         while not self._quit_flag:
  43             self.handle_request()
  44
  45 def app(env, start_response):
  46     command = env['PATH_INFO'][1:] # Remove the leading slash
  47     if command not in commands:
  48         status = '404 Not found'
  49         response_headers = [('Content-type', 'text/plain')]
  50         start_response(status, response_headers)
  51         return ['The command was not found.\n']
  52
  53     try:
  54         commands[command]()
  55     except:
  56         status = '500 Error'
  57         response_headers = [('Content-type', 'text/plain')]
  58         start_response(status, response_headers)
  59         return ['Error occured!\n']
  60
  61     status = '200 OK'
  62     response_headers = [('Content-type', 'text/plain')]
  63     start_response(status, response_headers)
  64     return ['Ok\n']
  65
  66 force()
  67 httpd = make_server(host, port, app, server_class=QuitWSGIServer)
  68 httpd.serve_forever()