Things definitely don't work yet, but should be heading in the right direction.
--- /dev/null
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011 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/>.
+
+MIGRATIONS = []
get_author = relationship(User)
+MODELS = [
+ User, MediaEntry, Tag, MediaTag, MediaComment]
+
+
+######################################################
+# Special, migrations-tracking table
+#
+# Not listed in MODELS because this is special and not
+# really migrated, but used for migrations (for now)
+######################################################
+
+class MigrationData(Base):
+ __tablename__ = "migrations"
+
+ id = Column(Integer, primary_key=True)
+ name = Column(Unicode, nullable=False, unique=True)
+ version = Column(Integer, nullable=False, default=0)
+
+######################################################
+
+
def show_table_init():
from sqlalchemy import create_engine
engine = create_engine('sqlite:///:memory:', echo=True)
--- /dev/null
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011 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/>.
+
+class MigrationManager(object):
+ pass
+
+
+class RegisterMigration(object):
+ """
+ Tool for registering migrations
+
+ Call like:
+
+ @RegisterMigration(33)
+ def update_dwarves(database):
+ [...]
+
+ This will register your migration with the default migration
+ registry. Alternately, to specify a very specific
+ migration_registry, you can pass in that as the second argument.
+
+ Note, the number of your migration should NEVER be 0 or less than
+ 0. 0 is the default "no migrations" state!
+ """
+ def __init__(self, migration_number, migration_registry):
+ assert migration_number > 0, "Migration number must be > 0!"
+ assert migration_number not in migration_registry, \
+ "Duplicate migration numbers detected! That's not allowed!"
+
+ self.migration_number = migration_number
+ self.migration_registry = migration_registry
+
+ def __call__(self, migration):
+ self.migration_registry[self.migration_number] = migration
+ return migration
+
+
+def assure_migrations_table_setup(db):
+ """
+ Make sure the migrations table is set up in the database.
+ """
+ from mediagoblin.db.sql.models import MigrationData
+
+ if not MigrationData.__table__.exists(db):
+ MigrationData.metadata.create_all(
+ db, tables=[MigrationData.__table__])
--- /dev/null
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011 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 mediagoblin.db.sql.open import setup_connection_and_db_from_config
+from mediagoblin.db.sql.util import (
+ MigrationManager, assure_migrations_table_setup)
+from mediagoblin.init import setup_global_and_app_config
+from mediagoblin.tools.common import import_component
+
+
+class DatabaseData(object):
+ def __init__(self, name, models, migrations):
+ self.name = name
+ self.models = models
+ self.migrations = migrations
+
+ def make_migration_manager(self, db):
+ return MigrationManager(
+ self.name, self.models, self.migrations, db)
+
+
+def gather_database_data(self, 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(
+ '__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 dbupdate(args):
+ """
+ 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)
+ """
+ globa_config, app_config = setup_global_and_app_config(args.conf_file)
+
+ # 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)
+
+ # If migrations table not made, make it!
+ assure_migrations_table_setup(db)
+
+ # 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(db)
+ migration_manager.init_or_migrate()
--- /dev/null
+from mediagoblin.db.sql.models import Base
+
+from sqlalchemy import (
+ Column, Integer, Unicode, UnicodeText, DateTime, Boolean, ForeignKey,
+ UniqueConstraint)
+
+
+class ImageData(Base):
+ __tablename__ = "image__data"
+
+ id = Column(Integer, primary_key=True)
+ width = Column(Integer)
+ height = Column(Integer)
+
+
+DATA_MODEL = ImageData
+MODELS = [ImageData]
--- /dev/null
+from mediagoblin.db.sql.models import Base
+
+from sqlalchemy import (
+ Column, Integer, Unicode, UnicodeText, DateTime, Boolean, ForeignKey,
+ UniqueConstraint)
+
+
+class VideoData(Base):
+ __tablename__ = "video__data"
+
+ id = Column(Integer, primary_key=True)
+ integer
+
+
+DATA_MODEL = VideoData
+MODELS = [VideoData]
projects / mediagoblin.git / commitdiff