mediagoblin/media_types/video/migrations.py

   1 # GNU MediaGoblin -- federated, autonomous media hosting
   2 # Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
   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 from mediagoblin.db.migration_tools import RegisterMigration, inspect_table
  18
  19 from sqlalchemy import MetaData, Column, Unicode
  20
  21 MIGRATIONS = {}
  22
  23
  24 @RegisterMigration(1, MIGRATIONS)
  25 def add_orig_metadata_column(db_conn):
  26     metadata = MetaData(bind=db_conn.bind)
  27
  28     vid_data = inspect_table(metadata, "video__mediadata")
  29
  30     col = Column('orig_metadata', Unicode,
  31                  default=None, nullable=True)
  32     col.create(vid_data)
  33     db_conn.commit()
  34
  35
  36 @RegisterMigration(2, MIGRATIONS)
  37 def webm_640_to_wemb_video(db):
  38     metadata = MetaData(bind=db.bind)
  39
  40     file_keynames = inspect_table(metadata, 'core__file_keynames')
  41
  42     for row in db.execute(file_keynames.select()):
  43         if row.name == 'webm_640':
  44             db.execute(
  45                 file_keynames.update(). \
  46                 where(file_keynames.c.id==row.id).\
  47                 values(name='webm_video'))
  48
  49     db.commit()