doc/web/howto/listings/xmlrpc-customized.py

   1 from twisted.web import xmlrpc, server
   2
   3 class EchoHandler:
   4
   5     def echo(self, x):
   6         """
   7         Return all passed args
   8         """
   9         return x
  10
  11
  12
  13 class AddHandler:
  14
  15     def add(self, a, b):
  16         """
  17         Return sum of arguments.
  18         """
  19         return a + b
  20
  21
  22
  23 class Example(xmlrpc.XMLRPC):
  24     """
  25     An example of using you own policy to fetch the handler
  26     """
  27
  28     def __init__(self):
  29         xmlrpc.XMLRPC.__init__(self)
  30         self._addHandler = AddHandler()
  31         self._echoHandler = EchoHandler()
  32
  33         #We keep a dict of all relevant
  34         #procedure names and callable.
  35         self._procedureToCallable = {
  36             'add':self._addHandler.add,
  37             'echo':self._echoHandler.echo
  38         }
  39
  40     def lookupProcedure(self, procedurePath):
  41         try:
  42             return self._procedureToCallable[procedurePath]
  43         except KeyError, e:
  44             raise xmlrpc.NoSuchFunction(self.NOT_FOUND,
  45                         "procedure %s not found" % procedurePath)
  46
  47     def listProcedures(self):
  48         """
  49         Since we override lookupProcedure, its suggested to override
  50         listProcedures too.
  51         """
  52         return ['add', 'echo']
  53
  54
  55
  56 if __name__ == '__main__':
  57     from twisted.internet import reactor
  58     r = Example()
  59     reactor.listenTCP(7080, server.Site(r))
  60     reactor.run()