superset/migrations/versions/41ce8799acc3_rename_pie_label_type.py

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"""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.")