superset 2021-02-10_12-32_41ce8799acc3_rename_pie_label_type 源码
superset 2021-02-10_12-32_41ce8799acc3_rename_pie_label_type 代码
文件路径：/superset/migrations/versions/2021-02-10_12-32_41ce8799acc3_rename_pie_label_type.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
#
# 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
# specific language governing permissions and limitations
# under the License.
"""rename pie label type
Revision ID: 41ce8799acc3
Revises: e11ccdd12658
Create Date: 2021-02-10 12:32:27.385579
"""
# revision identifiers, used by Alembic.
revision = "41ce8799acc3"
down_revision = "e11ccdd12658"
import json
from alembic import op
from sqlalchemy import and_, Column, Integer, String, Text
from sqlalchemy.ext.declarative import declarative_base
from superset import db
Base = declarative_base()
class Slice(Base):
"""Declarative class to do query in upgrade"""
__tablename__ = "slices"
id = Column(Integer, primary_key=True)
viz_type = Column(String(250))
params = Column(Text)
def upgrade():
bind = op.get_bind()
session = db.Session(bind=bind)
slices = (
session.query(Slice)
.filter(and_(Slice.viz_type == "pie", Slice.params.like("%pie_label_type%")))
.all()
)
changes = 0
for slc in slices:
try:
params = json.loads(slc.params)
pie_label_type = params.pop("pie_label_type", None)
if pie_label_type:
changes += 1
params["label_type"] = pie_label_type
slc.params = json.dumps(params, sort_keys=True)
except Exception as e:
print(e)
print(f"Parsing params for slice {slc.id} failed.")
pass
session.commit()
session.close()
print(f"Updated {changes} pie chart labels.")
def downgrade():
bind = op.get_bind()
session = db.Session(bind=bind)
slices = (
session.query(Slice)
.filter(and_(Slice.viz_type == "pie", Slice.params.like("%label_type%")))
.all()
)
changes = 0
for slc in slices:
try:
params = json.loads(slc.params)
label_type = params.pop("label_type", None)
if label_type:
changes += 1
params["pie_label_type"] = label_type
slc.params = json.dumps(params, sort_keys=True)
except Exception as e:
print(e)
print(f"Parsing params for slice {slc.id} failed.")
pass
session.commit()
session.close()
print(f"Updated {changes} pie chart labels.")
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