mediagoblin/gmg_commands/migrate.py

   1 # GNU MediaGoblin -- federated, autonomous media hosting
   2 # Copyright (C) 2011 Free Software Foundation, Inc
   3 #
   4 # This program is free software: you can redistribute it and/or modify
   5 # it under the terms of the GNU Affero General Public License as published by
   6 # the Free Software Foundation, either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU Affero General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU Affero General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17
  18 from mediagoblin.db import migrations
  19 from mediagoblin.db import util as db_util
  20 from mediagoblin.gmg_commands import util as commands_util
  21
  22
  23 def migrate_parser_setup(subparser):
  24     subparser.add_argument(
  25         '-cf', '--conf_file', default='mediagoblin.ini',
  26         help="Config file used to set up environment")
  27
  28
  29 def migrate(args):
  30     mgoblin_app = commands_util.setup_app(args)
  31
  32     # Clear old indexes
  33     print "== Clearing old indexes... =="
  34     removed_indexes = db_util.remove_deprecated_indexes(mgoblin_app.db)
  35
  36     for collection, index_name in removed_indexes:
  37         print "Removed index '%s' in collection '%s'" % (
  38             index_name, collection)
  39
  40     # Migrate
  41     print "== Applying migrations... =="
  42     for model_name in migrations.MIGRATE_CLASSES:
  43         model = getattr(mgoblin_app.db, model_name)
  44
  45         if not hasattr(model, 'migration_handler') or not model.collection:
  46             continue
  47
  48         migration = model.migration_handler(model)
  49         migration.migrate_all(collection=model.collection)
  50
  51     # Add new indexes
  52     print "== Adding new indexes... =="
  53     new_indexes = db_util.add_new_indexes(mgoblin_app.db)
  54
  55     for collection, index_name in new_indexes:
  56         print "Added index '%s' to collection '%s'" % (
  57             index_name, collection)