airflow 0099_2_3_0_add_task_log_filename_template_model 源码
airflow 0099_2_3_0_add_task_log_filename_template_model 代码
文件路径：/airflow/migrations/versions/0099_2_3_0_add_task_log_filename_template_model.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
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#
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"""Add ``LogTemplate`` table to track changes to config values ``log_filename_template``
Revision ID: f9da662e7089
Revises: 786e3737b18f
Create Date: 2021-12-09 06:11:21.044940
"""
from __future__ import annotations
from alembic import op
from sqlalchemy import Column, ForeignKey, Integer, Text
from airflow.migrations.utils import disable_sqlite_fkeys
from airflow.utils.sqlalchemy import UtcDateTime
# Revision identifiers, used by Alembic.
revision = "f9da662e7089"
down_revision = "786e3737b18f"
branch_labels = None
depends_on = None
airflow_version = '2.3.0'
def upgrade():
"""Add model for task log template and establish fk on task instance."""
op.create_table(
"log_template",
Column("id", Integer, primary_key=True, autoincrement=True),
Column("filename", Text, nullable=False),
Column("elasticsearch_id", Text, nullable=False),
Column("created_at", UtcDateTime, nullable=False),
)
dag_run_log_filename_id = Column(
"log_template_id",
Integer,
ForeignKey("log_template.id", name="task_instance_log_template_id_fkey", ondelete="NO ACTION"),
)
with disable_sqlite_fkeys(op), op.batch_alter_table("dag_run") as batch_op:
batch_op.add_column(dag_run_log_filename_id)
def downgrade():
"""Remove fk on task instance and model for task log filename template."""
with op.batch_alter_table("dag_run") as batch_op:
batch_op.drop_constraint("task_instance_log_template_id_fkey", type_="foreignkey")
batch_op.drop_column("log_template_id")
op.drop_table("log_template")
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