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# The contents of this file are subject to the BitTorrent Open Source License
# Version 1.1 (the License). You may not copy or use this file, in either
# source code or executable form, except in compliance with the License. You
# may obtain a copy of the License at http://www.bittorrent.com/license/.
#
# Software distributed under the License is distributed on an AS IS basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
# Written by Greg Hazel
class BaseMagic:
base = None
too_late = False
magic = BaseMagic()
from BitTorrent import BTFailure
try:
import RawServer_twisted
magic.base = RawServer_twisted.RawServer
Handler = RawServer_twisted.Handler
except ImportError:
import RawServer
magic.base = RawServer.RawServer
Handler = RawServer.Handler
def switch_rawserver(choice):
if magic.too_late:
raise BTFailure(_("Too late to switch RawServer backends, %s has already been used.") % str(magic.base))
if choice.lower() == 'twisted':
import RawServer_twisted
magic.base = RawServer_twisted.RawServer
else:
import RawServer
magic.base = RawServer.RawServer
class _RawServerMetaclass:
def __init__(self, *args):
pass
def __getattr__(self, name):
magic.too_late = True
try:
return getattr(magic.base, name)
except:
raise AttributeError, name
class RawServer:
__metaclass__ = _RawServerMetaclass
def __init__(self, *args, **kwargs):
magic.too_late = True
self.instance = magic.base(*args, **kwargs)
def __getattr__(self, name):
try:
return getattr(self.instance, name)
except:
raise AttributeError, name
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