fix(tracing): lazy importing asyncio should not reset existing trace context [backport 2.7] #9334
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…ontext (#9272) This PR introduces two main changes: 1. Do not reset `_DD_CONTEXTVAR` when initializing a `DefaultContextProvider` 2. Explicitly clear `_DD_CONTEXTVAR` after every test in dd-trace-py CI 1. We also emit a warning, so pytest will show them to us ## Motivation Currently, when 1. asyncio auto instrumentation is patched 5. and there's an existing trace context 6. and `asyncio` is imported Then the existing trace context will be reset to None. The expected behavior is that the existing trace context should not be reset for this kind of lazy imports ## Checklist - [x] Change(s) are motivated and described in the PR description - [x] Testing strategy is described if automated tests are not included in the PR - [x] Risks are described (performance impact, potential for breakage, maintainability) - [x] Change is maintainable (easy to change, telemetry, documentation) - [x] [Library release note guidelines](https://ddtrace.readthedocs.io/en/stable/releasenotes.html) are followed or label `changelog/no-changelog` is set - [x] Documentation is included (in-code, generated user docs, [public corp docs](https://github.com/DataDog/documentation/)) - [x] Backport labels are set (if [applicable](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting)) - [x] If this PR changes the public interface, I've notified `@DataDog/apm-tees`. ## Reviewer Checklist - [ ] Title is accurate - [ ] All changes are related to the pull request's stated goal - [ ] Description motivates each change - [ ] Avoids breaking [API](https://ddtrace.readthedocs.io/en/stable/versioning.html#interfaces) changes - [ ] Testing strategy adequately addresses listed risks - [ ] Change is maintainable (easy to change, telemetry, documentation) - [ ] Release note makes sense to a user of the library - [ ] Author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment - [ ] Backport labels are set in a manner that is consistent with the [release branch maintenance policy](https://ddtrace.readthedocs.io/en/latest/contributing.html#backporting) --------- Co-authored-by: Brett Langdon <[email protected]> (cherry picked from commit 06b8494)
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brettlangdon
approved these changes
May 21, 2024
Datadog ReportBranch report: ✅ 0 Failed, 86 Passed, 976 Skipped, 26m 43.99s Total duration (58m 32.88s time saved) |
BenchmarksBenchmark execution time: 2024-05-28 19:37:40 Comparing candidate commit ffecbec in PR branch Found 1 performance improvements and 0 performance regressions! Performance is the same for 200 metrics, 9 unstable metrics. scenario:span-add-metrics
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emmettbutler
approved these changes
May 22, 2024
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Backport 06b8494 from #9272 to 2.7.
This PR introduces two main changes:
_DD_CONTEXTVARwhen initializing aDefaultContextProvider_DD_CONTEXTVARafter every test in dd-trace-py CIMotivation
Currently, when
asynciois importedThen the existing trace context will be reset to None.
The expected behavior is that the existing trace context should not be reset for this kind of lazy imports
Checklist
changelog/no-changelogis set@DataDog/apm-tees.Reviewer Checklist