airflow 0008_1_6_0_task_duration 源码

  • 2022-10-20
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airflow 0008_1_6_0_task_duration 代码

文件路径:/airflow/migrations/versions/0008_1_6_0_task_duration.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.
"""Change ``task_instance.task_duration`` type to ``FLOAT``

Revision ID: 2e541a1dcfed
Revises: 1b38cef5b76e
Create Date: 2015-10-28 20:38:41.266143

"""
from __future__ import annotations

import sqlalchemy as sa
from alembic import op
from sqlalchemy.dialects import mysql

# revision identifiers, used by Alembic.
revision = '2e541a1dcfed'
down_revision = '1b38cef5b76e'
branch_labels = None
depends_on = None
airflow_version = '1.6.0'


def upgrade():
    # use batch_alter_table to support SQLite workaround
    with op.batch_alter_table("task_instance") as batch_op:
        batch_op.alter_column(
            'duration',
            existing_type=mysql.INTEGER(display_width=11),
            type_=sa.Float(),
            existing_nullable=True,
        )


def downgrade():
    pass

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