app/summerofcode/mapreduce/find_duplicates.py

# Copyright 2014 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 to find profiles with duplicate proposals and set that information
for the specified program.
"""

from google.appengine.ext import db
from google.appengine.ext import ndb

from mapreduce import context as mr_context

from melange.models import profile as profile_model

from summerofcode.logic import profile as profile_logic

# This MapReduce requires this model to have been imported.
# pylint: disable=unused-import
from summerofcode.models import organization as org_model
# pylint: enable=unused-import


ENTITY_KIND_ID_PARAM = 'entity_kind'
PROGRAM_KEY_URLSAFE_PARAM = 'program_key_id'

def process(profile_key):
  """Processes a single profile by finding out if it has duplicate proposals.

  Args:
    profile_key: ndb.Key of the profile.
  """
  profile_key = ndb.Key.from_old_key(profile_key)

  context = mr_context.get()
  params = context.mapreduce_spec.mapper.params

  # requested program for which the duplicates are being found
  program_key_urlsafe = params[PROGRAM_KEY_URLSAFE_PARAM]

  # actual program to which the profile corresponds
  actual_program_key = db.Key(program_key_urlsafe)

  requested_program_key = db.Key.from_path(
      'GSoCProgram', '/'.join([
          profile_model.getSponsorId(profile_key),
          profile_model.getProgramId(profile_key)]))

  if actual_program_key == requested_program_key:
    profile_logic.setToBeAcceptedProposals(profile_key)