2e00e70316c0_link_container_and_pod_states.py 文件源码

def downgrade():
    op.add_column('container_states', sa.Column('pod_id', postgresql.UUID(),
                  autoincrement=False, nullable=True))
    op.create_foreign_key(u'container_states_pod_id_fkey',
                          'container_states', 'pods', ['pod_id'], ['id'])

    downgrade_data()

    op.drop_column('container_states', 'reason')
    op.drop_column('container_states', 'exit_code')
    op.drop_constraint('container_states_pod_state_id_fkey', 'container_states',
                       type_='foreignkey')
    op.drop_index('ix_pod_id_start_time', table_name='pod_states')
    op.drop_column('container_states', 'pod_state_id')
    op.execute("ALTER TABLE pod_states DROP CONSTRAINT pod_states_pkey, "
               "ADD CONSTRAINT pod_states_pkey PRIMARY KEY (pod_id, start_time);")
    op.drop_column('pod_states', 'id')
    op.execute(sa.schema.DropSequence(sa.Sequence('pod_states_id_seq')))