airflow 0091_2_2_0_add_trigger_table_and_task_info 源码
airflow 0091_2_2_0_add_trigger_table_and_task_info 代码
文件路径：/airflow/migrations/versions/0091_2_2_0_add_trigger_table_and_task_info.py
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# to you under the Apache License, Version 2.0 (the
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"""Adds ``trigger`` table and deferrable operator columns to task instance
Revision ID: 54bebd308c5f
Revises: 30867afad44a
Create Date: 2021-04-14 12:56:40.688260
"""
from __future__ import annotations
import sqlalchemy as sa
from alembic import op
from airflow.utils.sqlalchemy import ExtendedJSON
# revision identifiers, used by Alembic.
revision = '54bebd308c5f'
down_revision = '30867afad44a'
branch_labels = None
depends_on = None
airflow_version = '2.2.0'
def upgrade():
"""Apply Adds ``trigger`` table and deferrable operator columns to task instance"""
op.create_table(
'trigger',
sa.Column('id', sa.Integer(), primary_key=True, nullable=False),
sa.Column('classpath', sa.String(length=1000), nullable=False),
sa.Column('kwargs', ExtendedJSON(), nullable=False),
sa.Column('created_date', sa.DateTime(), nullable=False),
sa.Column('triggerer_id', sa.Integer(), nullable=True),
)
with op.batch_alter_table('task_instance', schema=None) as batch_op:
batch_op.add_column(sa.Column('trigger_id', sa.Integer()))
batch_op.add_column(sa.Column('trigger_timeout', sa.DateTime()))
batch_op.add_column(sa.Column('next_method', sa.String(length=1000)))
batch_op.add_column(sa.Column('next_kwargs', ExtendedJSON()))
batch_op.create_foreign_key(
'task_instance_trigger_id_fkey', 'trigger', ['trigger_id'], ['id'], ondelete="CASCADE"
)
batch_op.create_index('ti_trigger_id', ['trigger_id'])
def downgrade():
"""Unapply Adds ``trigger`` table and deferrable operator columns to task instance"""
with op.batch_alter_table('task_instance', schema=None) as batch_op:
batch_op.drop_constraint('task_instance_trigger_id_fkey', type_='foreignkey')
batch_op.drop_index('ti_trigger_id')
batch_op.drop_column('trigger_id')
batch_op.drop_column('trigger_timeout')
batch_op.drop_column('next_method')
batch_op.drop_column('next_kwargs')
op.drop_table('trigger')
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