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feat!: Remove BackgroundOperation and is_alive from UpdateProcessor - #557
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UpdateProcessor now declares start and stop directly. Custom UpdateProcessor implementations no longer need to define is_alive. Code that referenced BackgroundOperation must drop that reference.
jsonbailey
approved these changes
Nov 4, 2026
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Summary
UpdateProcessornow declaresstartandstopitself and no longer inherits fromBackgroundOperation, which is removed. CustomUpdateProcessorimplementations no longer need to defineis_alive, and code that importsBackgroundOperationmust drop that import.Note
Overview
This is a breaking public API change: the internal
BackgroundOperationhelper is deleted, andUpdateProcessorno longer inherits it.UpdateProcessornow definesstartandstopdirectly (with updated docstrings) and no longer documents or requiresis_alive.Built-in no-op and test doubles are updated to match:
NullUpdateProcessor,NullEventProcessor, andAsyncNullEventProcessorinstubs.py, plusMockUpdateProcessor,MockEventProcessor, andMockAsyncUpdateProcessordrop theiris_aliveimplementations. CustomUpdateProcessorimplementations and any code importingBackgroundOperationmust be updated accordingly.Reviewed by Cursor Bugbot for commit 1ed1fb8. Bugbot is set up for automated code reviews on this repo. Configure here.