connectors/__init__.py
author edouard
Wed, 23 Feb 2011 16:54:29 +0100
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permissions -rwxr-xr-x
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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#
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#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD
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#
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#See COPYING file for copyrights details.
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#
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#This library is free software; you can redistribute it and/or
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#modify it under the terms of the GNU General Public
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#License as published by the Free Software Foundation; either
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#version 2.1 of the License, or (at your option) any later version.
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#
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#This library is distributed in the hope that it will be useful,
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#but WITHOUT ANY WARRANTY; without even the implied warranty of
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#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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#General Public License for more details.
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#
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#You should have received a copy of the GNU General Public
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#License along with this library; if not, write to the Free Software
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#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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# Package initialisation
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from os import listdir, path
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import PYRO
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_base_path = path.split(__file__)[0]
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connector_types = [name for name in listdir(_base_path)
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                        if path.isdir(path.join(_base_path, name))
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                            and name.upper() != "CVS"
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                            and not name.startswith("__")]
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# a dict from a URI scheme (connector name) to connector module
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connector_modules = {}
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# a dict from a DNS-SD service type to a connector module that support it
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dnssd_connectors = {}
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for t in connector_types:
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    new_module = getattr(__import__("connectors." + t), t)
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    connector_modules[t] = new_module
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    if hasattr(new_module, "supported_dnssd_services"):
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        for st in new_module.supported_dnssd_services:
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            dnssd_connectors[st] = new_module
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def ConnectorFactory(uri, pluginsroot):
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    """
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    Return a connector corresponding to the URI
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    or None if cannot connect to URI
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    """
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    servicetype = uri.split("://")[0]
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    if servicetype in connector_types:
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        # import module according to uri type
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        connectormodule = connector_modules[servicetype]
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        factoryname = servicetype + "_connector_factory"
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        return getattr(connectormodule, factoryname)(uri, pluginsroot)
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    elif servicetype == "LOCAL":
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        runtime_port = pluginsroot.AppFrame.StartLocalRuntime(taskbaricon=True)
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        return PYRO.PYRO_connector_factory(
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                       "PYRO://127.0.0.1:"+str(runtime_port), 
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                       pluginsroot)
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    else :
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        return None    
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