The `oslo_db.sqlalchemy.migration_cli.ext_base` Module¶

class oslo_db.sqlalchemy.migration_cli.ext_base.MigrationExtensionBase¶

Bases: object

downgrade(version)¶

Used for downgrading database.

Parameters:	version (string) – Desired database version

enabled¶

Used for availability verification of a plugin.

Return type:	bool

has_revision(rev_id)¶

Checks whether the repo contains a revision

Parameters:	rev_id – Revision to check
Returns:	Whether the revision is in the repo
Return type:	bool

revision(*args, **kwargs)¶

Used to generate migration script.

In migration engines that support this feature, it should generate new migration script.

Accept arbitrary set of arguments.

stamp(*args, **kwargs)¶

Stamps database based on plugin features.

Accept arbitrary set of arguments.

upgrade(version)¶

Used for upgrading database.

Parameters:	version (string) – Desired database version

version()¶

Current database version.

Returns:	Databse version
Return type:	string

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