OpenStack Study: 018_add_trust_tables.py

**** CubicPower OpenStack Study ****

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

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

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

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

    trust_table = sql.Table(

        'trust',

        meta,

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

        sql.Column('trustor_user_id',

                   sql.String(64),

                   unique=False,

                   nullable=False,),

        sql.Column('trustee_user_id',

                   sql.String(64),

                   unique=False,

                   nullable=False),

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

                   unique=False,

                   nullable=True),

        sql.Column("impersonation", sql.types.Boolean, nullable=False),

        sql.Column("deleted_at", sql.types.DateTime, nullable=True),

        sql.Column("expires_at", sql.types.DateTime, nullable=True),

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

    trust_table.create(migrate_engine, checkfirst=True)

    trust_role_table = sql.Table(

        'trust_role',

        meta,

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

                   nullable=False),

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

                   nullable=False))

    trust_role_table.create(migrate_engine, checkfirst=True)

**** CubicPower OpenStack Study ****

def downgrade(migrate_engine):

    meta = sql.MetaData()

    meta.bind = migrate_engine

    # Operations to reverse the above upgrade go here.

    for table_name in ['trust_role', 'trust']:

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

        table.drop()