#!/usr/bin/python
#
# Copyright (C) 2007, 2008 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


__author__ = 'davidbyttow@google.com (David Byttow)'


import httplib
import logging
import sys
import urllib2

import oauth
import simplejson
try:
  from google.appengine.api import urlfetch
except:
  pass


logging.basicConfig(level=logging.DEBUG)


def get_default_urlfetch():
  """Creates the default UrlFetch interface.
  
  If AppEngine environment is detected, then the AppEngineUrlFetch object
  will be created.
  
  TODO: Find a better way to determine if this is an AppEngine environment.

  """
  if sys.modules.has_key('google.appengine.api.urlfetch'):