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Dependency metrics tasks (process_dependency_metrics, process_libyear_dependency_metrics, process_scc_value_metrics) were placed inside a Celery group() alongside the facade core collection chain, causing them to fire concurrently with the git clone/update. This resulted in a FileNotFoundError when the tasks tried to scan directories that hadn't been written to disk yet. Fix: append the three tasks to facade_core_collection and use a single chain() so they execute strictly after the clone completes. Fixes #3767 Signed-off-by: mn-ram <mn-ram@users.noreply.github.com>
Adds two unit tests for facade_phase() to guard against the race condition fixed in the previous commit (issue #3767): 1. test_facade_phase_returns_chain - verifies the returned sequence is not a Celery group(), which would dispatch tasks in parallel. 2. test_facade_phase_dependency_tasks_follow_clone - verifies that process_dependency_metrics, process_libyear_dependency_metrics, and process_scc_value_metrics appear strictly after the git clone task in the chain, not before or alongside it. All Augur/DB dependencies are stubbed so no live environment is needed. Signed-off-by: mn-ram <mn-ram@users.noreply.github.com>
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| def test_facade_phase_returns_chain(mock_facade_helper): |
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[pylint] reported by reviewdog 🐶
W0621: Redefining name 'mock_facade_helper' from outer scope (line 157) (redefined-outer-name)
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| def test_facade_phase_dependency_tasks_follow_clone(mock_facade_helper): |
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[pylint] reported by reviewdog 🐶
W0621: Redefining name 'mock_facade_helper' from outer scope (line 157) (redefined-outer-name)
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| facade_phase = _facade_tasks_mod.facade_phase | ||
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| from celery import chain, signature # noqa: E402 |
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[pylint] reported by reviewdog 🐶
W0611: Unused chain imported from celery (unused-import)
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Note
This PR was ported from augurlabs/augur#3794, originally filed by @mn-ram because the contribution was deemed to still be useful.
Description
process_dependency_metrics,process_libyear_dependency_metrics, andprocess_scc_value_metricsout of Celerygroup()and into the mainfacade_core_collectionchain so they execute strictly after the git clone/update completes.groupimport fromcelery.This PR fixes #247
Notes for Reviewers
group()dispatches all members simultaneously, so dependency tasks were racing against the git clone and hittingFileNotFoundErroron directories that didn't exist yet. Using a singlechain()guarantees ordering with no extra overhead.Signed commits