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The new strategy is to do a three phase migration. This is the first phase: getting the namespace user in the db and written for all new repositories.

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This commit is contained in:
Jake Moshenko 2014-09-22 17:27:02 -04:00
parent 8626d1cd70
commit 3259cda000
7 changed files with 62 additions and 74 deletions
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30
data/migrations/versions/13da56878560_migrate_registry_namespaces_to_.py
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@ -19,36 +19,6 @@ def upgrade(tables):
# Add the namespace_user column, allowing it to be nullable
op.add_column('repository', sa.Column('namespace_user', sa.Integer(), sa.ForeignKey('user.id')))
# backfill the namespace_user column
namespace_to_user = {}
for user in User.select(User.name, User.id).where(User.robot == False):
namespace_to_user[user.username] = user
for repo in Repository.select():
repo.namespace_user = namespace_to_user[repo.namespace]
repo.save()
# Ensure the backfill was a success, then remove the namespace column
op.alter_column('repository', 'namespace_user', nullable=False)
op.create_index('repository_namespace_user_name', 'repository', ['namespace_user', 'name'],
unique=True)
op.drop_index('repository_namespace_user', table_name='repository')
op.drop_column('repository', 'namespace')
def downgrade(tables):
# Add the namespace column, allowing it to be nullable
op.add_column('repository', sa.Column('namespace', sa.String(length=255)))
# backfill the namespace column
for repo in Repository.select(Repository, User.username).join(User):
repo.namespace = repo.namespace_user.username
repo.save()
# Ensure the backfill was a success, then remove the namespace column
op.alter_column('repository', 'namespace', nullable=False)
op.create_index('repository_namespace_name', 'repository', ['namespace', 'name'], unique=True)
op.drop_index('repository_namespace_user', table_name='repository')
op.drop_column('repository', 'namespace_user')