158 add ability for plugin pipeline external persistent processes #167
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| instance2 = Singleton() | ||
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| # Assert | ||
| assert instance1 is instance2 |
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I like that this test perfectly describes "singleton" functionally.
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Confirmed that tests pass and coverage is 100% on my setup. Code looks good to me (but I wasn't checking for docstrings...). I created #176 to capture that we still need an example and docs for how to create and use a service. Great work! |
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@asgibson and I were discussing how plugins access services and want to avoid the user having to explicitly "instantiate" the services singleton. |
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Large update... ServiceManager is now instantiated in the AIPlugin superclass, meaning Plugins can access it by This change necessitated a bunch of fixes in the CSV Output example plugin's unit tests since the way those are written is out of date. Preliminary changes to that set of tests were made so it would pass, but they will need a full overhaul eventually - I'll make a new issue. Merged commits to take advantage of more recent updates to the Pylint pipeline. We should be good to go! |
asgibson
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- Add new initialized object in ExecutionEngine, the ServiceManager, which behaves as a singleton
- When specified in the config (example & tutorial to come in a later commit), a Service is made an attribute of the ServiceManager
- The ServiceManager can be imported in any plugin. As a singleton, when called to initialize, the original ServiceManager instance (along with instantiated Services) will be returned
- Services are defined in the config and imported automatically when ServiceManager is first generated
…_services_dict FileNotFoundError message to align with parse_plugins_dict.
…the beginning of the __init__
- ServiceManager is instantiated in the AIPlugin and set to the attr Plugin.service_manager
- Plugins no longer need to import it individually and can access by attr instead
- Add corresponding unit test to AI plugin abstract class
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Services framework has been implemented and unit tests have been updated to cover modifications. Currently, no example services are provided. Deferring to reviewers on whether we ought to wait for an example to be implemented (and tested) before adding to the main branch. This Services implementation is expected to be fully backwards compatible with previous OnAIR implementations.