superset 2020-08-28_17-16_175ea3592453_cache_lookup 源码
superset 2020-08-28_17-16_175ea3592453_cache_lookup 代码
文件路径：/superset/migrations/versions/2020-08-28_17-16_175ea3592453_cache_lookup.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
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# under the License.
"""Add cache to datasource lookup table.
Revision ID: 175ea3592453
Revises: f80a3b88324b
Create Date: 2020-08-28 17:16:57.379425
"""
# revision identifiers, used by Alembic.
revision = "175ea3592453"
down_revision = "f80a3b88324b"
import sqlalchemy as sa
from alembic import op
def upgrade():
op.create_table(
"cache_keys",
sa.Column("id", sa.Integer(), nullable=False),
sa.Column("cache_key", sa.String(256), nullable=False),
sa.Column("cache_timeout", sa.Integer(), nullable=True),
sa.Column("datasource_uid", sa.String(64), nullable=False),
sa.Column("created_on", sa.DateTime(), nullable=True),
sa.PrimaryKeyConstraint("id"),
)
op.create_index(
op.f("ix_cache_keys_datasource_uid"),
"cache_keys",
["datasource_uid"],
unique=False,
)
def downgrade():
op.drop_index(op.f("ix_cache_keys_datasource_uid"), table_name="cache_keys")
op.drop_table("cache_keys")
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