def upgrade(migrate_engine):
meta = MetaData()
meta.bind = migrate_engine
domains = Table('domains', meta, autoload=True)
subscribers = Table('subscribers', meta, autoload=True)
utils.drop_unique_constraint(
migrate_engine, 'subscribers', 'uniq_subscriber0username0domain',
'username', 'domain')
d = Column('domain_id', String(length=255))
subscribers.create_column(d)
UniqueConstraint(
'username', 'domain_id', table=subscribers,
name='uniq_subscriber0username0domain_id').create()
Index('uuid', domains.c.uuid, unique=True).create()
ForeignKeyConstraint(
columns=[subscribers.c.domain_id],
refcolumns=[domains.c.uuid]).create()
domains_list = list(domains.select().execute())
# If we have a domain, upgrade the subscribers with the correct UUID.
for domain in domains_list:
subscribers.update().\
where(subscribers.c.domain == domain.name).\
where(subscribers.c.project_id == domain.project_id).\
values(domain_id=domain.uuid).execute()
subscribers.drop_column('domain')
def downgrade(migrate_engine):
if migrate_engine.name == 'sqlite':
raise NotImplementedError('Downgrade with SQLite not supported.')
meta = MetaData()
meta.bind = migrate_engine
domains = Table('domains', meta, autoload=True)
subscribers = Table('subscribers', meta, autoload=True)
ForeignKeyConstraint(
columns=[subscribers.c.domain_id],
refcolumns=[domains.c.uuid]).drop()
Index('uuid', domains.c.uuid, unique=True).drop()
utils.drop_unique_constraint(
migrate_engine, 'subscribers', 'uniq_subscriber0username0domain_id',
'username', 'domain_id')
d = Column('domain', String(length=64), nullable=True)
d.create(subscribers)
UniqueConstraint(
'username', 'domain', table=subscribers,
name='uniq_subscriber0username0domain').create()
domains_list = list(domains.select().execute())
# If we have a domain, upgrade the subscribers with the correct name.
for domain in domains_list:
subscribers.update().\
where(subscribers.c.domain_id == domain.uuid).\
where(subscribers.c.project_id == domain.project_id).\
values(domain=domain.name).execute()
subscribers.c.domain.alter(nullable=False)
subscribers.drop_column('domain_id')