Allow Trailing ; in DD Header for W3C tracestate

[mhlidd]

What Does This Do

Previously, the Java tracer dropped all DD headers that had trailing ; in the W3C tracestate. This is inconsistent behavior from other Datadog tracers, which allowed this behavior. This PR updates the Java tracer behavior to be consistent with other tracers by allowing the trailing ; and trailing ; followed by trailing whitespaces.

Motivation

This PR fixes a bug reported in #11395

Additional Notes

Contributor Checklist

• Format the title according to the contribution guidelines
• Assign the type: and (comp: or inst:) labels in addition to any other useful labels
• Avoid using close, fix, or any linking keywords when referencing an issue
  Use solves instead, and assign the PR milestone to the issue
• Update the CODEOWNERS file on source file addition, migration, or deletion
• Update public documentation with any new configuration flags or behaviors
• Add your completed PR to the merge queue by commenting /merge. You can also:
  • Customize the commit message associated with the merge with /merge --commit-message "..."
  • Remove your PR from the merge queue with /merge -c
  • Skip all merge queue checks with /merge -f --reason "reason"; please use this judiciously, as some checks do not run at the PR-level (note: the PR still needs to be mergeable, this will only skip the pre-merge build)
  • Get more information in this doc

Jira ticket: [PROJ-IDENT]

[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	13.94 s	13.90 s	[-0.5%; +0.9%] (no difference)
startup:insecure-bank:tracing:Agent	12.90 s	12.98 s	[-1.4%; +0.2%] (no difference)
startup:petclinic:appsec:Agent	16.93 s	16.51 s	[+1.5%; +3.5%] (significantly worse)
startup:petclinic:iast:Agent	16.90 s	16.95 s	[-1.2%; +0.6%] (no difference)
startup:petclinic:profiling:Agent	16.88 s	16.51 s	[-2.3%; +6.8%] (no difference)
startup:petclinic:sca:Agent	16.89 s	16.22 s	[-0.3%; +8.6%] (no difference)
startup:petclinic:tracing:Agent	15.71 s	16.13 s	[-6.6%; +1.5%] (no difference)

Commit: 5b5dea17 · CI Pipeline · Benchmarking Platform UI

---

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

[mhlidd]

@codex review

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 2b1937bb2e

ℹ️ About Codex in GitHub

Codex has been enabled to automatically review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

When you sign up for Codex through ChatGPT, Codex can also answer questions or update the PR, like "@codex address that feedback".

[mhlidd]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Breezy!

Reviewed commit: 2e846af0a7

ℹ️ About Codex in GitHub

Codex has been enabled to automatically review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

When you sign up for Codex through ChatGPT, Codex can also answer questions or update the PR, like "@codex address that feedback".

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 2e846af0a7

ℹ️ About Codex in GitHub

Codex has been enabled to automatically review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

When you sign up for Codex through ChatGPT, Codex can also answer questions or update the PR, like "@codex address that feedback".

[mhlidd]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Can't wait for the next one!

Reviewed commit: 5b5dea17a5

ℹ️ About Codex in GitHub

Codex has been enabled to automatically review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

When you sign up for Codex through ChatGPT, Codex can also answer questions or update the PR, like "@codex address that feedback".