app/soc/mapreduce/convert_profile.py

# Copyright 2013 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.

"""Mapreduce converting profile model."""

from google.appengine.ext import ndb

# This MapReduce requires this model to have been imported.
# pylint: disable=unused-import
from melange.models.profile import Profile
# pylint: enable=unused-import


@ndb.transactional
def convertProfileRolesTxn(profile_key):
  """Converts lists of organizations for which the specified profile has
  role in a transaction.

  Args:
    profile_key: Profile key.
  """
  # only update profiles for Code In programs
  if 'gci' not in profile_key.name():
    return

  profile = ndb.Key.from_old_key(profile_key).get()

  # only update projects
  new_mentor_for = []
  for org_key in profile.mentor_for:
    new_mentor_for.append(ndb.Key('Organization', org_key.id()))
  profile.mentor_for = new_mentor_for

  new_admin_for = []
  for org_key in profile.admin_for:
    new_admin_for.append(ndb.Key('Organization', org_key.id()))
  profile.admin_for = new_admin_for

  profile.put()


@ndb.transactional
def convertWinnerForTxn(profile_key):
  """Converts the name of organization model for winner_for property which
  holds a key to organization for which the specified profile is a winner.

  Existing references have 'GCIOrganization' model whereas after DB->NDB
  conversion the name was simplified to 'Organization'.

  It applies to Code In profiles only.

  Args:
    profile_key: Profile key.
  """
  # only update profiles for Code In programs
  if 'gci' not in profile_key.name():
    return

  profile = ndb.Key.from_old_key(profile_key).get()

  if profile.is_student and profile.student_data.winner_for:
    profile.winner_for = ndb.Key(
        'Organization', profile.student_data.winner_for.id())
    profile.put()