0ae3829048
The reason it blew up was because in the latter caught exception, it wouldn't set models/migrations to an empty set, so it would actually use the previous run's models/migrations! That's what we get for "leaky" variables on python for loops :) This commit sponsored by Pascal Diogo Antunes. Thank you!
133 lines
4.4 KiB
Python
133 lines
4.4 KiB
Python
# GNU MediaGoblin -- federated, autonomous media hosting
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# Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import logging
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from sqlalchemy.orm import sessionmaker
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from mediagoblin.db.open import setup_connection_and_db_from_config
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from mediagoblin.db.migration_tools import MigrationManager
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from mediagoblin.init import setup_global_and_app_config
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from mediagoblin.tools.common import import_component
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_log = logging.getLogger(__name__)
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logging.basicConfig()
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_log.setLevel(logging.DEBUG)
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def dbupdate_parse_setup(subparser):
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pass
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class DatabaseData(object):
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def __init__(self, name, models, migrations):
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self.name = name
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self.models = models
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self.migrations = migrations
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def make_migration_manager(self, session):
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return MigrationManager(
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self.name, self.models, self.migrations, session)
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def gather_database_data(media_types, plugins):
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"""
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Gather all database data relevant to the extensions we have
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installed so we can do migrations and table initialization.
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Returns a list of DatabaseData objects.
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"""
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managed_dbdata = []
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# Add main first
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from mediagoblin.db.models import MODELS as MAIN_MODELS
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from mediagoblin.db.migrations import MIGRATIONS as MAIN_MIGRATIONS
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managed_dbdata.append(
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DatabaseData(
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u'__main__', MAIN_MODELS, MAIN_MIGRATIONS))
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# Then get all registered media managers (eventually, plugins)
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for media_type in media_types:
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models = import_component('%s.models:MODELS' % media_type)
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migrations = import_component('%s.migrations:MIGRATIONS' % media_type)
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managed_dbdata.append(
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DatabaseData(media_type, models, migrations))
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for plugin in plugins:
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try:
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models = import_component('{0}.models:MODELS'.format(plugin))
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except ImportError as exc:
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_log.debug('No models found for {0}: {1}'.format(
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plugin,
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exc))
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models = []
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except AttributeError as exc:
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_log.warning('Could not find MODELS in {0}.models, have you \
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forgotten to add it? ({1})'.format(plugin, exc))
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models = []
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try:
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migrations = import_component('{0}.migrations:MIGRATIONS'.format(
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plugin))
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except ImportError as exc:
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_log.debug('No migrations found for {0}: {1}'.format(
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plugin,
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exc))
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migrations = {}
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except AttributeError as exc:
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_log.debug('Cloud not find MIGRATIONS in {0}.migrations, have you \
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forgotten to add it? ({1})'.format(plugin, exc))
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migrations = {}
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if models:
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managed_dbdata.append(
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DatabaseData(plugin, models, migrations))
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return managed_dbdata
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def run_dbupdate(app_config, global_config):
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"""
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Initialize or migrate the database as specified by the config file.
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Will also initialize or migrate all extensions (media types, and
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in the future, plugins)
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"""
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# Gather information from all media managers / projects
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dbdatas = gather_database_data(
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app_config['media_types'],
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global_config.get('plugins', {}).keys())
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# Set up the database
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db = setup_connection_and_db_from_config(app_config, migrations=True)
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Session = sessionmaker(bind=db.engine)
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# Setup media managers for all dbdata, run init/migrate and print info
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# For each component, create/migrate tables
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for dbdata in dbdatas:
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migration_manager = dbdata.make_migration_manager(Session())
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migration_manager.init_or_migrate()
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def dbupdate(args):
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global_config, app_config = setup_global_and_app_config(args.conf_file)
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run_dbupdate(app_config, global_config)
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