airflow 0117_2_4_0_add_processor_subdir_to_dagmodel_and_ 源码

airflow 0117_2_4_0_add_processor_subdir_to_dagmodeland 代码

文件路径：/airflow/migrations/versions/0117_2_4_0_add_processor_subdir_to_dagmodeland.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 processor_subdir column to DagModel, SerializedDagModel and CallbackRequest tables.

Revision ID: ecb43d2a1842
Revises: 1486deb605b4
Create Date: 2022-08-26 11:30:11.249580

"""
from __future__ import annotations

import sqlalchemy as sa
from alembic import op

# revision identifiers, used by Alembic.
revision = 'ecb43d2a1842'
down_revision = '1486deb605b4'
branch_labels = None
depends_on = None
airflow_version = '2.4.0'


def upgrade():
    """Apply add processor_subdir to DagModel and SerializedDagModel"""
    conn = op.get_bind()

    with op.batch_alter_table('dag') as batch_op:
        if conn.dialect.name == "mysql":
            batch_op.add_column(sa.Column('processor_subdir', sa.Text(length=2000), nullable=True))
        else:
            batch_op.add_column(sa.Column('processor_subdir', sa.String(length=2000), nullable=True))

    with op.batch_alter_table('serialized_dag') as batch_op:
        if conn.dialect.name == "mysql":
            batch_op.add_column(sa.Column('processor_subdir', sa.Text(length=2000), nullable=True))
        else:
            batch_op.add_column(sa.Column('processor_subdir', sa.String(length=2000), nullable=True))

    with op.batch_alter_table('callback_request') as batch_op:
        batch_op.drop_column('dag_directory')
        if conn.dialect.name == "mysql":
            batch_op.add_column(sa.Column('processor_subdir', sa.Text(length=2000), nullable=True))
        else:
            batch_op.add_column(sa.Column('processor_subdir', sa.String(length=2000), nullable=True))


def downgrade():
    """Unapply Add processor_subdir to DagModel and SerializedDagModel"""
    conn = op.get_bind()
    with op.batch_alter_table('dag', schema=None) as batch_op:
        batch_op.drop_column('processor_subdir')

    with op.batch_alter_table('serialized_dag', schema=None) as batch_op:
        batch_op.drop_column('processor_subdir')

    with op.batch_alter_table('callback_request') as batch_op:
        batch_op.drop_column('processor_subdir')
        if conn.dialect.name == "mysql":
            batch_op.add_column(sa.Column('dag_directory', sa.Text(length=1000), nullable=True))
        else:
            batch_op.add_column(sa.Column('dag_directory', sa.String(length=1000), nullable=True))

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