OpenStack Study: 001_add_identity_provider_table.py

**** CubicPower OpenStack Study ****

def upgrade(migrate_engine):

    meta = sql.MetaData()

    meta.bind = migrate_engine

    idp_table = sql.Table(

        'identity_provider',

        meta,

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

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

        sql.Column('description', sql.Text(), nullable=True))

    idp_table.create(migrate_engine, checkfirst=True)

    federation_protocol_table = sql.Table(

        'federation_protocol',

        meta,

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

        sql.Column('idp_id', sql.String(64),

                   sql.ForeignKey('identity_provider.id', ondelete='CASCADE'),

                   primary_key=True),

        sql.Column('mapping_id', sql.String(64), nullable=True))

    federation_protocol_table.create(migrate_engine, checkfirst=True)

**** CubicPower OpenStack Study ****

def downgrade(migrate_engine):

    meta = sql.MetaData()

    meta.bind = migrate_engine

    tables = ['identity_provider', 'federation_protocol']

    for table_name in tables:

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

        table.drop()