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95 changes: 95 additions & 0 deletions
95
migrations/versions/8a9bf9d385c2_make_client_key_a_uuid.py
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| # -*- coding: utf-8 -*- | ||
| """Make client.key a UUID | ||
| Revision ID: 8a9bf9d385c2 | ||
| Revises: f65c00c0cfc3 | ||
| Create Date: 2020-03-20 18:43:41.802182 | ||
| """ | ||
| from alembic import op | ||
| from sqlalchemy.sql import column, table | ||
| from sqlalchemy_utils import UUIDType | ||
| import sqlalchemy as sa | ||
|
|
||
| from progressbar import ProgressBar | ||
| import progressbar.widgets | ||
|
|
||
| from coaster.utils import buid2uuid, uuid2buid | ||
|
|
||
| # revision identifiers, used by Alembic. | ||
| revision = '8a9bf9d385c2' | ||
| down_revision = 'f65c00c0cfc3' | ||
| branch_labels = None | ||
| depends_on = None | ||
|
|
||
|
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| client = table( | ||
| 'client', | ||
| column('id', sa.Integer()), | ||
| column('key', sa.Unicode(22)), | ||
| column('uuid', UUIDType(binary=False)), | ||
| ) | ||
|
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||
|
|
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| def get_progressbar(label, maxval): | ||
| return ProgressBar( | ||
| maxval=maxval, | ||
| widgets=[ | ||
| label, | ||
| ': ', | ||
| progressbar.widgets.Percentage(), | ||
| ' ', | ||
| progressbar.widgets.Bar(), | ||
| ' ', | ||
| progressbar.widgets.ETA(), | ||
| ' ', | ||
| ], | ||
| ) | ||
|
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|
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| def upgrade(): | ||
| op.add_column('client', sa.Column('uuid', UUIDType(binary=False), nullable=True)) | ||
|
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| conn = op.get_bind() | ||
| count = conn.scalar(sa.select([sa.func.count('*')]).select_from(client)) | ||
| progress = get_progressbar("Clients", count) | ||
| progress.start() | ||
| items = conn.execute(sa.select([client.c.id, client.c.key])) | ||
| for counter, item in enumerate(items): | ||
| conn.execute( | ||
| sa.update(client) | ||
| .where(client.c.id == item.id) | ||
| .values(uuid=buid2uuid(item.key)) | ||
| ) | ||
| progress.update(counter) | ||
| progress.finish() | ||
|
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| op.alter_column('client', 'uuid', nullable=False) | ||
| op.drop_constraint('client_key_key', 'client', type_='unique') | ||
| op.create_unique_constraint('client_uuid_key', 'client', ['uuid']) | ||
| op.drop_column('client', 'key') | ||
|
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||
|
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| def downgrade(): | ||
| op.add_column( | ||
| 'client', | ||
| sa.Column('key', sa.VARCHAR(length=22), autoincrement=False, nullable=False), | ||
| ) | ||
|
|
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| conn = op.get_bind() | ||
| count = conn.scalar(sa.select([sa.func.count('*')]).select_from(client)) | ||
| progress = get_progressbar("Clients", count) | ||
| progress.start() | ||
| items = conn.execute(sa.select([client.c.id, client.c.uuid])) | ||
| for counter, item in enumerate(items): | ||
| conn.execute( | ||
| sa.update(client) | ||
| .where(client.c.id == item.id) | ||
| .values(key=uuid2buid(item.uuid)) | ||
| ) | ||
| progress.update(counter) | ||
| progress.finish() | ||
|
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| op.drop_constraint('client_uuid_key', 'client', type_='unique') | ||
| op.create_unique_constraint('client_key_key', 'client', ['key']) | ||
| op.drop_column('client', 'uuid') |
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