airflow 0002_1_5_0_create_is_encrypted 源码
airflow 0002_1_5_0_create_is_encrypted 代码
文件路径：/airflow/migrations/versions/0002_1_5_0_create_is_encrypted.py
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
"""Add ``is_encrypted`` column in ``connection`` table
Revision ID: 1507a7289a2f
Revises: e3a246e0dc1
Create Date: 2015-08-18 18:57:51.927315
"""
from __future__ import annotations
import sqlalchemy as sa
from alembic import op
from sqlalchemy import inspect
# revision identifiers, used by Alembic.
revision = '1507a7289a2f'
down_revision = 'e3a246e0dc1'
branch_labels = None
depends_on = None
airflow_version = '1.5.0'
connectionhelper = sa.Table(
'connection', sa.MetaData(), sa.Column('id', sa.Integer, primary_key=True), sa.Column('is_encrypted')
)
def upgrade():
# first check if the user already has this done. This should only be
# true for users who are upgrading from a previous version of Airflow
# that predates Alembic integration
conn = op.get_bind()
inspector = inspect(conn)
# this will only be true if 'connection' already exists in the db,
# but not if alembic created it in a previous migration
if 'connection' in inspector.get_table_names():
col_names = [c['name'] for c in inspector.get_columns('connection')]
if 'is_encrypted' in col_names:
return
op.add_column('connection', sa.Column('is_encrypted', sa.Boolean, unique=False, default=False))
conn = op.get_bind()
conn.execute(connectionhelper.update().values(is_encrypted=False))
def downgrade():
op.drop_column('connection', 'is_encrypted')
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