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Preserve unit metadata in restricted registries - #1237
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Aryangupta-05 wants to merge 1 commit into
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Keep the original unit when creating a metric snapshot with selected samples. Cover the restricted registry object and the OpenMetrics WSGI response for name[] filtering. Assisted-by: OpenAI Codex Signed-off-by: Aryan <aryangupta050903@gmail.com>
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Filtering a registry drops each metric's unit. For example, an OpenMetrics response for
?name[]=response_size_bytes_totalkeeps the counter sample but loses# UNIT response_size_bytes bytes. The same metric has its unit when collected without the filter.Metric._restricted_metric()copies the name, help text and type into a newMetric, but omitsself.unit. Pass that existing metadata through to the snapshot. Selected samples and their values remain unchanged.Added regressions for a restricted summary and the public WSGI application's filtered OpenMetrics response. Both fail on unchanged master (
ff9a2d3) and pass with the fix.Validation on Windows / Python 3.12.15:
tox -e py3.12: 430 passed, 14 skipped.tox -e flake8: passes;tox -e isort: passes.--platform linux --install-types --non-interactive: no issues in 42 source files.The skips concern optional integrations/dependencies. Other Python versions and operating systems were not run locally.
The default Windows-targeted mypy run reports two unavailable POSIX attributes in the unchanged
process_collector.py:resource.getpagesizeandos.sysconf. The Linux-targeted check above passes without changing that file or the project's type-check configuration.@csmarchbanks, this is a small correction to preserve existing metadata during sample filtering, following the contribution guide.
AI assistance: OpenAI Codex helped investigate, implement and test this change. The commit is signed off under the DCO.