Abstract OT-Baggage Tests

[mhlidd]

What Does This Do

This PR removes the deduplication logic in OpenTracing Baggage unit tests by centralizing the test logic in AbstractOTBaggageTest.java. Individual propagation style tests extend this abstract test class and feed propagation style specific extractors to validate extraction behavior for its propagation style.

Motivation

#12303 introduced duplication of test class logic for OT Baggage.

Additional Notes

Contributor Checklist

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  Use solves instead, and assign the PR milestone to the issue
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Jira ticket: [PROJ-IDENT]

[datadog-datadog-us1-prod]

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 77.95% (+19.10%)

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 645abd3 | Docs | View more details | Give us feedback!}

[dd-octo-sts]

🟢 Java Benchmark SLOs — All performance SLOs passed

Suite	Status
Startup	🟢 pass

SLO thresholds are defined here based on automatically generated metrics. A warning is raised when results are within 5% of the threshold.

PR vs. master results

Scenario	Candidate	master	Δ (95% CI of mean)
startup:insecure-bank:iast:Agent	13.92 s	13.97 s	[-1.1%; +0.4%] (no difference)
startup:insecure-bank:tracing:Agent	12.91 s	12.96 s	[-1.4%; +0.6%] (no difference)
startup:petclinic:appsec:Agent	16.72 s	16.72 s	[-0.9%; +0.9%] (no difference)
startup:petclinic:iast:Agent	16.85 s	16.93 s	[-1.2%; +0.3%] (no difference)
startup:petclinic:profiling:Agent	16.68 s	16.31 s	[-2.2%; +6.8%] (no difference)
startup:petclinic:sca:Agent	16.72 s	16.51 s	[+0.3%; +2.3%] (maybe worse)
startup:petclinic:tracing:Agent	15.51 s	16.09 s	[-7.7%; +0.5%] (no difference)

Commit: 645abd3f · CI Pipeline · Benchmarking Platform UI

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Load and DaCapo benchmarks can be triggered manually in the GitLab pipeline. Results will appear in the Benchmarking Platform UI after completion.

[dd-octo-sts]

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[chatgpt-codex-connector]

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Reviewed commit: b11a96b9f1

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[datadog-datadog-us1-prod]

The new abstract tests omit mixed-source limit coverage and two replacement-limit cases. A later baggage-limit regression can pass the reduced suite.

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[dd-octo-sts]

/merge

[gh-worker-devflow-routing-ef8351]

View all feedbacks in Devflow UI.

2026-09-01 15:20:16 UTC ℹ️ Start processing command /merge

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2026-09-01 15:20:20 UTC ℹ️ MergeQueue: pull request added to the queue

The expected merge time in master is approximately 1h (p90).

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2026-09-01 16:13:29 UTC ℹ️ MergeQueue: This merge request was merged