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# GNU MediaGoblin -- federated, autonomous media hosting
# Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from sqlalchemy.orm import sessionmaker
from mediagoblin.db.sql.open import setup_connection_and_db_from_config
from mediagoblin.db.sql.util import MigrationManager
from mediagoblin.init import setup_global_and_app_config
from mediagoblin.tools.common import import_component
def dbupdate_parse_setup(subparser):
pass
class DatabaseData(object):
def __init__(self, name, models, migrations):
self.name = name
self.models = models
self.migrations = migrations
def make_migration_manager(self, session):
return MigrationManager(
self.name, self.models, self.migrations, session)
def gather_database_data(media_types):
"""
Gather all database data relevant to the extensions we have
installed so we can do migrations and table initialization.
Returns a list of DatabaseData objects.
"""
managed_dbdata = []
# Add main first
from mediagoblin.db.sql.models import MODELS as MAIN_MODELS
from mediagoblin.db.sql.migrations import MIGRATIONS as MAIN_MIGRATIONS
managed_dbdata.append(
DatabaseData(
u'__main__', MAIN_MODELS, MAIN_MIGRATIONS))
# Then get all registered media managers (eventually, plugins)
for media_type in media_types:
models = import_component('%s.models:MODELS' % media_type)
migrations = import_component('%s.migrations:MIGRATIONS' % media_type)
managed_dbdata.append(
DatabaseData(media_type, models, migrations))
return managed_dbdata
def run_dbupdate(app_config):
"""
Initialize or migrate the database as specified by the config file.
Will also initialize or migrate all extensions (media types, and
in the future, plugins)
"""
# Gather information from all media managers / projects
dbdatas = gather_database_data(app_config['media_types'])
# Set up the database
connection, db = setup_connection_and_db_from_config(app_config)
Session = sessionmaker(bind=db.engine)
# Setup media managers for all dbdata, run init/migrate and print info
# For each component, create/migrate tables
for dbdata in dbdatas:
migration_manager = dbdata.make_migration_manager(Session())
migration_manager.init_or_migrate()
def dbupdate(args):
global_config, app_config = setup_global_and_app_config(args.conf_file)
run_dbupdate(app_config)
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