app/soc/logic/system.py
author Daniel Bentley <dbentley@google.com>
Sun, 12 Apr 2009 09:06:45 +0000
changeset 2168 ef7222d4847f
parent 1797 f0c83ca3bb08
child 2865 fee8732830f7
permissions -rw-r--r--
Use offset_linkid instead of offset to scan >1000 entities. this is a first-cut. It works in all the ways I could make earlier versions fail. It passes link_id as URL parameters. It also has a new class LinkCreator which makes the main body of getListContents even easier to write. I wasn't sure if link_id's could have non alphanumeric characters; if so, they need to be URL encoded/decoded. I also need to go and remove any mention of raw offsets now, because we don't use them. I believe I've talked about this approach with a few of you and it sounded reasonable. Feel free to roll-back/fix/amend/comment-for-me-to-fix. This is my first big-logic-change to Melange. Patch by: Dan Bentley

#!/usr/bin/python2.5
#
# Copyright 2008 the Melange authors.
#
# 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.

"""Basic system information functions.
"""

__authors__ = [
  '"Todd Larsen" <tlarsen@google.com>',
  ]


import os
import settings


def getAppVersion():
  """Returns the Google App Engine "version" of the running instance.
  """

  return os.environ.get('CURRENT_VERSION_ID')


def getMelangeVersion():
  """Returns the Melange part of the GAE version.
  """

  return getAppVersion().split('.', 1)[0]


def isLocal():
  """Returns True if Melange application is running locally.
  
  "Local mode" is currently determined from settings.DEBUG but may become
  more sophisticated in the future.
  """

  return settings.DEBUG


def isDebug():
  """Returns True if Melange application is running in "debug mode".

  "Debug mode" is currently enabled if running locally or if the
  current Melange version is 'devvin'.
  """

  return isLocal() or getMelangeVersion() == 'devvin'