Files
notifications-api/migrations/versions/0229_new_letter_rates.py
Pea Tyczynska ea3144c3fd Add downgrade steps to new rates migration, add end_date to old rates
and refactor migration statements for security good practice
2018-09-25 15:10:16 +01:00

78 lines
2.2 KiB
Python

"""empty message
Revision ID: 0229_new_letter_rates
Revises: 0228_notification_postage
"""
revision = '0229_new_letter_rates'
down_revision = '0228_notification_postage'
import uuid
from datetime import datetime
from alembic import op
from sqlalchemy.sql import text
START = datetime(2018, 9, 30, 23, 0)
NEW_RATES = [
(uuid.uuid4(), START, 1, 0.30, False, 'second'),
(uuid.uuid4(), START, 2, 0.35, True, 'second'),
(uuid.uuid4(), START, 2, 0.35, False, 'second'),
(uuid.uuid4(), START, 3, 0.40, True, 'second'),
(uuid.uuid4(), START, 3, 0.40, False, 'second'),
(uuid.uuid4(), START, 4, 0.45, True, 'second'),
(uuid.uuid4(), START, 4, 0.45, False, 'second'),
(uuid.uuid4(), START, 5, 0.50, True, 'second'),
(uuid.uuid4(), START, 5, 0.50, False, 'second'),
(uuid.uuid4(), START, 1, 0.56, True, 'first'),
(uuid.uuid4(), START, 1, 0.56, False, 'first'),
(uuid.uuid4(), START, 2, 0.61, True, 'first'),
(uuid.uuid4(), START, 2, 0.61, False, 'first'),
(uuid.uuid4(), START, 3, 0.66, True, 'first'),
(uuid.uuid4(), START, 3, 0.66, False, 'first'),
(uuid.uuid4(), START, 4, 0.71, True, 'first'),
(uuid.uuid4(), START, 4, 0.71, False, 'first'),
(uuid.uuid4(), START, 5, 0.76, True, 'first'),
(uuid.uuid4(), START, 5, 0.76, False, 'first'),
]
def upgrade():
conn = op.get_bind()
conn.execute(text("""
update
letter_rates
set
end_date = :start
where
rate != 0.30
"""), start=START)
for id, start_date, sheet_count, rate, crown, post_class in NEW_RATES:
conn.execute(text("""
INSERT INTO letter_rates (id, start_date, sheet_count, rate, crown, post_class)
VALUES (:id, :start_date, :sheet_count, :rate, :crown, :post_class)
"""), id=id, start_date=start_date, sheet_count=sheet_count, rate=rate, crown=crown, post_class=post_class)
def downgrade():
conn = op.get_bind()
conn.execute(text("""
delete from
letter_rates
where
start_date = :start
"""), start=START)
conn.execute(text("""
update
letter_rates
set
end_date = null
where
end_date = :start
"""), start=START)