superset 2021-10-12_11-15_32646df09c64_update_time_grain_sqla 源码
superset 2021-10-12_11-15_32646df09c64_update_time_grain_sqla 代码
文件路径：/superset/migrations/versions/2021-10-12_11-15_32646df09c64_update_time_grain_sqla.py
# Licensed to the Apache Software Foundation (ASF) under one
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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
# 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
# KIND, either express or implied. See the License for the
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# under the License.
"""update time grain SQLA
Revision ID: 32646df09c64
Revises: 60dc453f4e2e
Create Date: 2021-10-12 11:15:25.559532
"""
# revision identifiers, used by Alembic.
revision = "32646df09c64"
down_revision = "60dc453f4e2e"
import json
from typing import Dict
from alembic import op
from sqlalchemy import Column, Integer, Text
from sqlalchemy.ext.declarative import declarative_base
from superset import db
Base = declarative_base()
class Slice(Base):
__tablename__ = "slices"
id = Column(Integer, primary_key=True)
params = Column(Text)
def migrate(mapping: Dict[str, str]) -> None:
bind = op.get_bind()
session = db.Session(bind=bind)
for slc in session.query(Slice).all():
try:
params = json.loads(slc.params)
time_grain_sqla = params.get("time_grain_sqla")
if time_grain_sqla in mapping:
params["time_grain_sqla"] = mapping[time_grain_sqla]
slc.params = json.dumps(params, sort_keys=True)
except Exception:
pass
session.commit()
session.close()
def upgrade():
migrate(mapping={"PT0.5H": "PT30M", "P0.25Y": "P3M"})
def downgrade():
migrate(mapping={"PT30M": "PT0.5H", "P3M": "P0.25Y"})
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