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OpenStack Study: 007_add_domain_tables.py

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def upgrade(migrate_engine):

# Upgrade operations go here. Don't create your own engine; bind

# migrate_engine to your metadata

meta = sql.MetaData()

meta.bind = migrate_engine

domain_table = sql.Table(

'domain',

meta,

sql.Column('id', sql.String(64), primary_key=True),

sql.Column('name', sql.String(64), unique=True, nullable=False),

sql.Column('enabled', sql.Boolean, nullable=False, default=True),

sql.Column('extra', sql.Text()))

domain_table.create(migrate_engine, checkfirst=True)

sql.Table('user', meta, autoload=True)

user_domain_metadata_table = sql.Table(

'user_domain_metadata',

sql.ForeignKey('user.id'),

sql.ForeignKey('domain.id'),

primary_key=True),

sql.Column('data', sql.Text()))

user_domain_metadata_table.create(migrate_engine, checkfirst=True)

sql.Table('tenant', meta, autoload=True)

credential_table = sql.Table(

'credential',

meta,

sql.Column('id', sql.String(64), primary_key=True),

sql.Column('user_id',

sql.String(64),

sql.ForeignKey('user.id'),

nullable=False),

sql.Column('project_id',

sql.String(64),

sql.ForeignKey('tenant.id')),

sql.Column('blob', sql.Text(), nullable=False),

sql.Column('type', sql.String(255), nullable=False),

sql.Column('extra', sql.Text()))

credential_table.create(migrate_engine, checkfirst=True)

role = sql.Table('role', meta, autoload=True)

extra = sql.Column('extra', sql.Text())

role.create_column(extra)

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def downgrade(migrate_engine):

meta = sql.MetaData()

meta.bind = migrate_engine

role = sql.Table('role', meta, autoload=True)

role.drop_column('extra')

tables = ['user_domain_metadata', 'credential', 'domain']

for t in tables:

table = sql.Table(t, meta, autoload=True)

table.drop(migrate_engine, checkfirst=True)