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import sqlalchemy as sql
from sqlalchemy.orm import sessionmaker
def upgrade_with_rename(meta, migrate_engine):
legacy_table = sql.Table('tenant', meta, autoload=True)
legacy_table.rename('project')
legacy_table = sql.Table('user_tenant_membership', meta, autoload=True)
legacy_table.rename('user_project_membership')
def downgrade_with_rename(meta, migrate_engine):
upgrade_table = sql.Table('project', meta, autoload=True)
upgrade_table.rename('tenant')
upgrade_table = sql.Table('user_project_membership', meta, autoload=True)
upgrade_table.rename('user_tenant_membership')
def upgrade_with_copy(meta, migrate_engine):
sql.Table('user', meta, autoload=True)
project_table = sql.Table(
'project',
meta,
sql.Column('id', sql.String(64), primary_key=True),
sql.Column('name', sql.String(64), unique=True, nullable=False),
sql.Column('extra', sql.Text()),
sql.Column('description', sql.Text(), nullable=True),
sql.Column('enabled', sql.types.Boolean, default=True))
project_table.create(migrate_engine, checkfirst=True)
user_project_membership_table = sql.Table(
'user_project_membership',
meta,
sql.Column(
'user_id',
sql.String(64),
sql.ForeignKey('user.id'),
primary_key=True),
sql.Column(
'tenant_id',
sql.String(64),
sql.ForeignKey('project.id'),
primary_key=True))
user_project_membership_table.create(migrate_engine, checkfirst=True)
session = sessionmaker(bind=migrate_engine)()
tenant_table = sql.Table('tenant', meta, autoload=True)
insert = project_table.insert()
for tenant in session.query(tenant_table):
insert.execute({'id': tenant.id,
'name': tenant.name,
'extra': tenant.extra,
'description': tenant.description,
'enabled': tenant.enabled})
user_tenant_membership_table = sql.Table('user_tenant_membership',
meta,
autoload=True)
insert = user_project_membership_table.insert()
for user_id, tenant_id in session.query(user_tenant_membership_table):
insert.execute({'user_id': user_id, 'tenant_id': tenant_id})
session.commit()
session.close()
user_tenant_membership_table.drop()
tenant_table.drop()
def downgrade_with_copy(meta, migrate_engine):
sql.Table('user', meta, autoload=True)
tenant_table = sql.Table(
'tenant',
meta,
sql.Column('id', sql.String(64), primary_key=True),
sql.Column('name', sql.String(64), unique=True, nullable=False),
sql.Column('extra', sql.Text()),
sql.Column('description', sql.Text(), nullable=True),
sql.Column('enabled', sql.types.Boolean))
tenant_table.create(migrate_engine, checkfirst=True)
user_tenant_membership_table = sql.Table(
'user_tenant_membership',
meta,
sql.Column(
'user_id',
sql.String(64),
sql.ForeignKey('user.id'),
primary_key=True),
sql.Column(
'tenant_id',
sql.String(64),
sql.ForeignKey('tenant.id'),
primary_key=True))
user_tenant_membership_table.create(migrate_engine, checkfirst=True)
session = sessionmaker(bind=migrate_engine)()
project_table = sql.Table('project', meta, autoload=True)
insert = tenant_table.insert()
for project in session.query(project_table):
insert.values(project).execute()
project_table.drop()
user_project_membership_table = sql.Table('user_project_membership',
meta,
autoload=True)
insert = user_tenant_membership_table.insert()
for membership in session.query(user_project_membership_table):
insert.execute(membership)
user_project_membership_table.drop()
session.commit()
session.close()
def upgrade(migrate_engine):
meta = sql.MetaData()
meta.bind = migrate_engine
if migrate_engine.name == "sqlite":
upgrade_with_copy(meta, migrate_engine)
else:
upgrade_with_rename(meta, migrate_engine)
def downgrade(migrate_engine):
meta = sql.MetaData()
meta.bind = migrate_engine
if migrate_engine.name == "sqlite":
downgrade_with_copy(meta, migrate_engine)
else:
downgrade_with_rename(meta, migrate_engine)
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