This patch introduces detailed documentation for the newly implemented
backend system in oslo.service. The documentation covers:
• Why the backend system was introduced (to facilitate migration and
improve modularity)
• Architecture and components, including BaseBackend, BackendType,
and the component registry
• Usage guidelines, explaining backend initialization, component
retrieval, and testing strategies
• Exception handling for backend selection and component availability
• Practical examples demonstrating backend usage in real-world
scenarios
This documentation ensures that users understand the backend selection
mechanism, how to interact with service components, and how to
transition smoothly between different backend implementations.
Signed-off-by: Daniel Bengtsson <dbengt@redhat.com>
Change-Id: I860b6136047cd15334ea70bc351d129cafd689d1