cinderlib.persistence package

Submodules

• cinderlib.persistence.base module

Module contents

class MyDict

Bases: dict

Custom non clearable dictionary.

Required to overcome the nature of oslo.config where configuration comes from files and command line input.

Using this dictionary we can load from memory everything and it won’t clear things when we dynamically load a driver and the driver has new configuration options.

clear() → None. Remove all items from D.

setup(config)

Setup persistence to be used in cinderlib.

By default memory persistance will be used, but there are other mechanisms available and other ways to use custom mechanisms:

• Persistence plugins: Plugin mechanism uses Python entrypoints under namespace cinderlib.persistence.storage, and cinderlib comes with 3 different mechanisms, “memory”, “dbms”, and “memory_dbms”. To use any of these one must pass the string name in the storage parameter and any other configuration as keyword arguments.

• Passing a class that inherits from PersistenceDriverBase as storage parameter and initialization parameters as keyword arguments.

• Passing an instance that inherits from PersistenceDriverBase as storage parameter.