airflow 0053_1_10_10_add_rendered_task_instance_fields_table 源码
airflow 0053_1_10_10_add_rendered_task_instance_fields_table 代码
文件路径：/airflow/migrations/versions/0053_1_10_10_add_rendered_task_instance_fields_table.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 ``RenderedTaskInstanceFields`` table
Revision ID: 852ae6c715af
Revises: a4c2fd67d16b
Create Date: 2020-03-10 22:19:18.034961
"""
from __future__ import annotations
import sqlalchemy as sa
from alembic import op
from airflow.migrations.db_types import StringID
# revision identifiers, used by Alembic.
revision = '852ae6c715af'
down_revision = 'a4c2fd67d16b'
branch_labels = None
depends_on = None
airflow_version = '1.10.10'
TABLE_NAME = 'rendered_task_instance_fields'
def upgrade():
"""Apply Add ``RenderedTaskInstanceFields`` table"""
json_type = sa.JSON
conn = op.get_bind()
if conn.dialect.name != "postgresql":
# Mysql 5.7+/MariaDB 10.2.3 has JSON support. Rather than checking for
# versions, check for the function existing.
try:
conn.execute("SELECT JSON_VALID(1)").fetchone()
except (sa.exc.OperationalError, sa.exc.ProgrammingError):
json_type = sa.Text
op.create_table(
TABLE_NAME,
sa.Column('dag_id', StringID(), nullable=False),
sa.Column('task_id', StringID(), nullable=False),
sa.Column('execution_date', sa.TIMESTAMP(timezone=True), nullable=False),
sa.Column('rendered_fields', json_type(), nullable=False),
sa.PrimaryKeyConstraint('dag_id', 'task_id', 'execution_date'),
)
def downgrade():
"""Drop RenderedTaskInstanceFields table"""
op.drop_table(TABLE_NAME)
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