cinderlib.persistence.base module

class DB(persistence_driver)

Bases: object

Replacement for DB access methods.

This will serve as replacement for methods used by:

• Drivers

• OVOs’ get_by_id and save methods

• DB implementation

Data will be retrieved using the persistence driver we setup.

GET_METHODS_PER_DB_MODEL = {cinder.objects.QualityOfServiceSpecs.model: 'qos_specs_get', cinder.objects.Snapshot.model: 'snapshot_get', cinder.objects.Volume.model: 'volume_get', cinder.objects.VolumeType.model: 'volume_type_get'}

get_by_id(context, model, id, *args, **kwargs)

classmethod image_volume_cache_get_by_volume_id(context, volume_id)

qos_specs_get(context, qos_specs_id, inactive=False)

snapshot_get(context, snapshot_id, *args, **kwargs)

volume_admin_metadata_delete(context, volume_id, key)

volume_get(context, volume_id, *args, **kwargs)

volume_get_all_by_host(context, host, filters=None)

volume_type_get(context, id, inactive=False, expected_fields=None)

class PersistenceDriverBase(**kwargs)

Bases: object

Provide Metadata Persistency for our resources.

This class will be used to store new resources as they are created, updated, and removed, as well as provide a mechanism for users to retrieve volumes, snapshots, and connections.

property db

delete_connection(connection)

delete_key_value(key)

delete_snapshot(snapshot)

delete_volume(volume)

get_changed_fields(resource)

get_connections(connection_id=None, volume_id=None)

get_fields(resource)

get_key_values(key)

get_snapshots(snapshot_id=None, snapshot_name=None, volume_id=None)

get_volumes(volume_id=None, volume_name=None, backend_name=None)

reset_change_tracker(resource, fields=None)

set_connection(connection)

set_key_value(key_value)

set_snapshot(snapshot)

set_volume(volume)

vol_type_to_dict(volume_type)