airflow 0070_2_0_0_fix_mssql_exec_date_rendered_task_instance 源码
airflow 0070_2_0_0_fix_mssql_exec_date_rendered_task_instance 代码
文件路径：/airflow/migrations/versions/0070_2_0_0_fix_mssql_exec_date_rendered_task_instance.py
#
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# 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
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# software distributed under the License is distributed on an
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"""fix_mssql_exec_date_rendered_task_instance_fields_for_MSSQL
Revision ID: 52d53670a240
Revises: 98271e7606e2
Create Date: 2020-10-13 15:13:24.911486
"""
from __future__ import annotations
import sqlalchemy as sa
from alembic import op
from sqlalchemy.dialects import mssql
# revision identifiers, used by Alembic.
revision = '52d53670a240'
down_revision = '98271e7606e2'
branch_labels = None
depends_on = None
airflow_version = '2.0.0'
TABLE_NAME = 'rendered_task_instance_fields'
def upgrade():
"""
Recreate RenderedTaskInstanceFields table changing timestamp to datetime2(6) when using MSSQL as
backend
"""
conn = op.get_bind()
if conn.dialect.name == "mssql":
json_type = sa.Text
op.drop_table(TABLE_NAME)
op.create_table(
TABLE_NAME,
sa.Column('dag_id', sa.String(length=250), nullable=False),
sa.Column('task_id', sa.String(length=250), nullable=False),
sa.Column('execution_date', mssql.DATETIME2, nullable=False),
sa.Column('rendered_fields', json_type(), nullable=False),
sa.PrimaryKeyConstraint('dag_id', 'task_id', 'execution_date'),
)
def downgrade():
"""
Recreate RenderedTaskInstanceFields table changing datetime2(6) to timestamp when using MSSQL as
backend
"""
conn = op.get_bind()
if conn.dialect.name == "mssql":
json_type = sa.Text
op.drop_table(TABLE_NAME)
op.create_table(
TABLE_NAME,
sa.Column('dag_id', sa.String(length=250), nullable=False),
sa.Column('task_id', sa.String(length=250), nullable=False),
sa.Column('execution_date', sa.TIMESTAMP, nullable=False),
sa.Column('rendered_fields', json_type(), nullable=False),
sa.PrimaryKeyConstraint('dag_id', 'task_id', 'execution_date'),
)
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