airflow 0030_1_10_0_add_kubernetes_scheduler_uniqueness 源码
airflow 0030_1_10_0_add_kubernetes_scheduler_uniqueness 代码
文件路径：/airflow/migrations/versions/0030_1_10_0_add_kubernetes_scheduler_uniqueness.py
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# distributed with this work for additional information
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# to you under the Apache License, Version 2.0 (the
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"""Add kubernetes scheduler uniqueness
Revision ID: 86770d1215c0
Revises: 27c6a30d7c24
Create Date: 2018-04-03 15:31:20.814328
"""
from __future__ import annotations
import sqlalchemy as sa
from alembic import op
# revision identifiers, used by Alembic.
revision = '86770d1215c0'
down_revision = '27c6a30d7c24'
branch_labels = None
depends_on = None
airflow_version = '1.10.0'
RESOURCE_TABLE = "kube_worker_uuid"
def upgrade():
columns_and_constraints = [
sa.Column("one_row_id", sa.Boolean, server_default=sa.true(), primary_key=True),
sa.Column("worker_uuid", sa.String(255)),
]
conn = op.get_bind()
# alembic creates an invalid SQL for mssql and mysql dialects
if conn.dialect.name in {"mysql"}:
columns_and_constraints.append(sa.CheckConstraint("one_row_id<>0", name="kube_worker_one_row_id"))
elif conn.dialect.name not in {"mssql"}:
columns_and_constraints.append(sa.CheckConstraint("one_row_id", name="kube_worker_one_row_id"))
table = op.create_table(RESOURCE_TABLE, *columns_and_constraints)
op.bulk_insert(table, [{"worker_uuid": ""}])
def downgrade():
op.drop_table(RESOURCE_TABLE)
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