Swallow Python exceptions better on workflow GC from eviction#341
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cretz merged 4 commits intotemporalio:mainfrom Jul 11, 2023
Merged
Swallow Python exceptions better on workflow GC from eviction#341cretz merged 4 commits intotemporalio:mainfrom
cretz merged 4 commits intotemporalio:mainfrom
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Sushisource
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Jul 10, 2023
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| logger.debug( | ||
| "Ignoring exception while deleting workflow", exc_info=True |
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Very nit but IMO this is more like trace level
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Was a tough call, but figured since I remove the two primary cases where this happens, the rest I think are fairly rare. And in fact, this can show a sign of a code smell, because it might mean you are swallowing an exception in a finally if it's not one of these two exception types.
# Conflicts: # temporalio/workflow.py
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What was changed
Python raises
GeneratorExitwhen GC'ing coroutines that are beingawaited on. So when our workflow is evicted, users were seeing uncaught exception warnings. Also, if they hadfinallylogic that did something with the workflow, the event loop is already unset so that error is raised too, causing Python warning, sometimes swallowingGeneratorExit(which causes another type of Python exception).This no longer logs
GeneratorExitor no-workflow-runtime exceptions when deleting, and all other exceptions during delete are just logged at the debug levelChecklist