airflow 0019_1_7_1_add_fractional_seconds_to_mysql_tables 源码

airflow 0019_1_7_1_add_fractional_seconds_to_mysql_tables 代码

文件路径：/airflow/migrations/versions/0019_1_7_1_add_fractional_seconds_to_mysql_tables.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 fractional seconds to MySQL tables

Revision ID: 4addfa1236f1
Revises: f2ca10b85618
Create Date: 2016-09-11 13:39:18.592072

"""
from __future__ import annotations

from alembic import op
from sqlalchemy.dialects import mysql

# revision identifiers, used by Alembic.
revision = '4addfa1236f1'
down_revision = 'f2ca10b85618'
branch_labels = None
depends_on = None
airflow_version = '1.7.1.3'


def upgrade():
    conn = op.get_bind()
    if conn.dialect.name == "mysql":
        op.alter_column(table_name='dag', column_name='last_scheduler_run', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='dag', column_name='last_pickled', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='dag', column_name='last_expired', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='dag_pickle', column_name='created_dttm', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='dag_run', column_name='execution_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='dag_run', column_name='start_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='dag_run', column_name='end_date', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='import_error', column_name='timestamp', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='job', column_name='start_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='job', column_name='end_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='job', column_name='latest_heartbeat', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='log', column_name='dttm', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='log', column_name='execution_date', type_=mysql.DATETIME(fsp=6))

        op.alter_column(
            table_name='sla_miss', column_name='execution_date', type_=mysql.DATETIME(fsp=6), nullable=False
        )
        op.alter_column(table_name='sla_miss', column_name='timestamp', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='task_fail', column_name='execution_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='task_fail', column_name='start_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='task_fail', column_name='end_date', type_=mysql.DATETIME(fsp=6))

        op.alter_column(
            table_name='task_instance',
            column_name='execution_date',
            type_=mysql.DATETIME(fsp=6),
            nullable=False,
        )
        op.alter_column(table_name='task_instance', column_name='start_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='task_instance', column_name='end_date', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='task_instance', column_name='queued_dttm', type_=mysql.DATETIME(fsp=6))

        op.alter_column(table_name='xcom', column_name='timestamp', type_=mysql.DATETIME(fsp=6))
        op.alter_column(table_name='xcom', column_name='execution_date', type_=mysql.DATETIME(fsp=6))


def downgrade():
    conn = op.get_bind()
    if conn.dialect.name == "mysql":
        op.alter_column(table_name='dag', column_name='last_scheduler_run', type_=mysql.DATETIME())
        op.alter_column(table_name='dag', column_name='last_pickled', type_=mysql.DATETIME())
        op.alter_column(table_name='dag', column_name='last_expired', type_=mysql.DATETIME())

        op.alter_column(table_name='dag_pickle', column_name='created_dttm', type_=mysql.DATETIME())

        op.alter_column(table_name='dag_run', column_name='execution_date', type_=mysql.DATETIME())
        op.alter_column(table_name='dag_run', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='dag_run', column_name='end_date', type_=mysql.DATETIME())

        op.alter_column(table_name='import_error', column_name='timestamp', type_=mysql.DATETIME())

        op.alter_column(table_name='job', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='job', column_name='end_date', type_=mysql.DATETIME())
        op.alter_column(table_name='job', column_name='latest_heartbeat', type_=mysql.DATETIME())

        op.alter_column(table_name='log', column_name='dttm', type_=mysql.DATETIME())
        op.alter_column(table_name='log', column_name='execution_date', type_=mysql.DATETIME())

        op.alter_column(
            table_name='sla_miss', column_name='execution_date', type_=mysql.DATETIME(), nullable=False
        )
        op.alter_column(table_name='sla_miss', column_name='timestamp', type_=mysql.DATETIME())

        op.alter_column(table_name='task_fail', column_name='execution_date', type_=mysql.DATETIME())
        op.alter_column(table_name='task_fail', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='task_fail', column_name='end_date', type_=mysql.DATETIME())

        op.alter_column(
            table_name='task_instance', column_name='execution_date', type_=mysql.DATETIME(), nullable=False
        )
        op.alter_column(table_name='task_instance', column_name='start_date', type_=mysql.DATETIME())
        op.alter_column(table_name='task_instance', column_name='end_date', type_=mysql.DATETIME())
        op.alter_column(table_name='task_instance', column_name='queued_dttm', type_=mysql.DATETIME())

        op.alter_column(table_name='xcom', column_name='timestamp', type_=mysql.DATETIME())
        op.alter_column(table_name='xcom', column_name='execution_date', type_=mysql.DATETIME())

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