superset 2017-12-17_11-06_21e88bc06c02_annotation_migration 源码
superset 2017-12-17_11-06_21e88bc06c02_annotation_migration 代码
文件路径：/superset/migrations/versions/2017-12-17_11-06_21e88bc06c02_annotation_migration.py
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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
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# under the License.
"""migrate_old_annotation_layers
Revision ID: 21e88bc06c02
Revises: 67a6ac9b727b
Create Date: 2017-12-17 11:06:30.180267
"""
import json
from alembic import op
from sqlalchemy import Column, Integer, or_, String, Text
from sqlalchemy.ext.declarative import declarative_base
from superset import db
# revision identifiers, used by Alembic.
revision = "21e88bc06c02"
down_revision = "67a6ac9b727b"
Base = declarative_base()
class Slice(Base):
__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)
for slc in session.query(Slice).filter(
or_(Slice.viz_type.like("line"), Slice.viz_type.like("bar"))
):
params = json.loads(slc.params)
layers = params.get("annotation_layers", [])
if layers:
new_layers = []
for layer in layers:
new_layers.append(
{
"annotationType": "INTERVAL",
"style": "solid",
"name": "Layer {}".format(layer),
"show": True,
"overrides": {"since": None, "until": None},
"value": layer,
"width": 1,
"sourceType": "NATIVE",
}
)
params["annotation_layers"] = new_layers
slc.params = json.dumps(params)
session.merge(slc)
session.commit()
session.close()
def downgrade():
bind = op.get_bind()
session = db.Session(bind=bind)
for slc in session.query(Slice).filter(
or_(Slice.viz_type.like("line"), Slice.viz_type.like("bar"))
):
params = json.loads(slc.params)
layers = params.get("annotation_layers", [])
if layers:
params["annotation_layers"] = [layer["value"] for layer in layers]
slc.params = json.dumps(params)
session.merge(slc)
session.commit()
session.close()
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