airflow 0087_2_1_4_add_index_on_state_dag_id_for_queued_ 源码
airflow 0087_2_1_4_add_index_on_state_dag_id_forqueued 代码
文件路径：/airflow/migrations/versions/0087_2_1_4_add_index_on_state_dag_id_forqueued.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
#
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# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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"""Add index on state, dag_id for queued ``dagrun``
Revision ID: ccde3e26fe78
Revises: 092435bf5d12
Create Date: 2021-09-08 16:35:34.867711
"""
from __future__ import annotations
from alembic import op
from sqlalchemy import text
# revision identifiers, used by Alembic.
revision = 'ccde3e26fe78'
down_revision = '092435bf5d12'
branch_labels = None
depends_on = None
airflow_version = '2.1.4'
def upgrade():
"""Apply Add index on state, dag_id for queued ``dagrun``"""
with op.batch_alter_table('dag_run') as batch_op:
batch_op.create_index(
'idx_dag_run_queued_dags',
["state", "dag_id"],
postgresql_where=text("state='queued'"),
mssql_where=text("state='queued'"),
sqlite_where=text("state='queued'"),
)
def downgrade():
"""Unapply Add index on state, dag_id for queued ``dagrun``"""
with op.batch_alter_table('dag_run') as batch_op:
batch_op.drop_index('idx_dag_run_queued_dags')
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