1

#!/usr/bin/env python

     2

# -*- coding: utf-8 -*-

     3

#

     4

#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD

     5

#

     6

#See COPYING file for copyrights details.

     7

#

     8

#This library is free software; you can redistribute it and/or

     9

#modify it under the terms of the GNU General Public

    10

#License as published by the Free Software Foundation; either

    11

#version 2.1 of the License, or (at your option) any later version.

    12

#

    13

#This library is distributed in the hope that it will be useful,

    14

#but WITHOUT ANY WARRANTY; without even the implied warranty of

    15

#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    16

#General Public License for more details.

    17

#

    18

#You should have received a copy of the GNU General Public

    19

#License along with this library; if not, write to the Free Software

    20

#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    21

    22

# Package initialisation

    23

    24

from os import listdir, path

    25

    26

    27

_base_path = path.split(__file__)[0]

    28

    29

    30

# a dict from a DNS-SD service type to a connector module that support it

    31

dnssd_connectors = {"_PYRO._tcp.local.":"PYRO"}

    32

    33

def _GetLocalConnectorClassFactory(name):

    34

    return lambda:getattr(__import__(name,globals(),locals()), name + "_connector_factory")

    35

    36

connectors = {name:_GetLocalConnectorClassFactory(name) 

    37

                  for name in listdir(_base_path) 

    38

                      if path.isdir(path.join(_base_path, name)) 

    39

                          and not name.startswith("__")}

    40

    41

def ConnectorFactory(uri, confnodesroot):

    42

    """

    43

    Return a connector corresponding to the URI

    44

    or None if cannot connect to URI

    45

    """

    46

    servicetype = uri.split("://")[0]

    47

    if servicetype in connectors:

    48

        # import module according to uri type

    49

        connectorclass = connectors[servicetype]()

    50

    elif servicetype == "LOCAL":

    51

        from PYRO import PYRO_connector_factory as connectorclass

    52

        runtime_port = confnodesroot.AppFrame.StartLocalRuntime(taskbaricon=True)

    53

        uri="PYRO://127.0.0.1:"+str(runtime_port)

    54

    else :

    55

        return None    

    56

    return connectorclass(uri, confnodesroot)

    57