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changing List<Span> for List<DDSpan> - #1
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…d do not instantiate HashMap if it's not needed)
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Add support for Amazon Opensearch instrumentation.
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…lkit-generated)
This PR adds a new module `dd-java-agent/instrumentation/jedis/jedis-gen-3.0`
containing an alternative Jedis 3.0 instrumentation generated by the
APM instrumentation toolkit. Placed alongside existing `jedis-3.0`.
Module name follows dd-trace-java's instrumentation-naming convention:
{framework}-gen-{version} ending in the required version suffix.
Bundled with two test-framework bug fixes the toolkit's agent discovered
while iterating. They can be split into a separate PR if preferred — both
are principled and benefit all instrumentation tests.
## Module changes (jedis-gen-3.0/)
One agent-driven workflow run. Cost: $41.04, ~92 min, reviewer approved
first iteration.
Key choices the agent made:
- Instruments `redis.clients.jedis.Connection` (protocol layer — same target
as existing `jedis-1.4`). Classloader matcher: `hasClassNamed(ProtocolCommand)`
with `.and(not(hasClassNamed(CommandObject)))` to avoid clashing with jedis-4.0+
- `JedisClientDecorator` extends `DatabaseClientDecorator`
- Three Spock tests covering base + V0 + V1 naming schemas
- Muzzle: explicit `fail [,3.0.0)` + `pass [3.0.0,4.0.0)` + `skipVersions += "jedis-3.6.2"`
(jedis-3.6.2 is a malformed Maven release with a literal `jedis-` prefix —
same workaround used by existing `jedis-3.0` module on master)
## Test-framework fixes (instrumentation-testing/)
The agent's verbatim reasoning from apm_test diagnosis output:
### Fix#1 — Is.java: CharSequence comparison
> The Is matcher used `expected.equals(actual)`, but `String.equals()` requires
> the other object to also be a String. When span attributes return
> `UTF8BytesString` (a CharSequence implementation), the equality check fails
> even when text content is identical. Fix: Added fallback using
> `String.contentEquals(CharSequence)` in `Is.test()`.
Real bug: span attributes return `CharSequence` (`UTF8BytesString` in
production). The `Is<T>` matcher's `expected.equals(t)` is asymmetric — any
test using `is("redis.query")` on a span attribute would fail despite the
value being correct.
### Fix#2 — TagsMatcher.java: DD_SVC_SRC default + nullable ERROR_MSG
> The TagsMatcher.defaultTags() was missing the `_dd.svc_src` tag that the
> tracer automatically sets. Also, the `error(Class)` matcher didn't account
> for `error.message` tags when no specific message was expected. Both caused
> "Unexpected tags" assertion failures.
Two related issues. (1) `_dd.svc_src` parity gap: the Groovy framework
(`TagsAssert.groovy:158`) already handles this tag; JUnit 5 `TagsMatcher.java`
was missing it. (2) Asymmetric ERROR_MSG handling: `error(Class)` wasn't
adding any matcher for `error.message`, so spans containing one would fail
with "Unexpected tags".
## Verification
```
./gradlew :dd-java-agent:instrumentation:jedis:jedis-gen-3.0:check \\
:dd-java-agent:instrumentation:jedis:jedis-gen-3.0:muzzle \\
:dd-java-agent:instrumentation:jedis:jedis-gen-3.0:latestDepTest
BUILD SUCCESSFUL in 28s
```
Multi-JVM matrix not run locally; standard CI will cover that.
## Reviewer notes
- Framework fixes (Is.java, TagsMatcher.java) are independent of the
jedis-gen-3.0 module. Can be split into a separate PR if preferred.
- Protocol-layer target (`Connection`, not `Client`) matches existing
`jedis-1.4` pattern. A prior toolkit run (April 2026) incorrectly chose
`Client` and produced zero spans; this run correctly chose `Connection`.
- Class names follow the project convention.
- The `skipVersions += "jedis-3.6.2"` workaround is copied from existing
`jedis-3.0` module on master.
## Provenance
Generated by apm-instrumentation-toolkit (DataDog/apm-instrumentation-toolkit
branch eval/java). Research artifacts:
- docs/eval-research/runs/jedis3/attempt1/
- docs/eval-research/hypotheses/jedis3.md
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>6 tasks
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Jul 21, 2026
- context-tracking.md: narrow ContextStore key rule — Reactor uses Publisher/Subscriber; JAX-RS uses ContainerRequestContext; Vert.x uses its own Context; coroutines use Continuation/CoroutineContext. Do not force Reactor's key type onto libraries that don't expose Publisher / Subscriber. Also broaden lifecycle-boundary examples per library shape. - tests.md: distinguish latest-only APIs (belong in src/latestDepTest/) from removed-in-latest APIs (belong in src/test/, or use replacement API in latestDepTest). The Reactor Schedulers.elastic() removal is the removed-in-latest case, not the latest-only case. - muzzle.md #1 (fail-block scope): explicitly show same-coordinate cases (jedis/okhttp/jetty-server) alongside different-coordinate cases (rxjava, jms api). The bounded 'versions' range in the fail block is what asserts non-overlap for same-coordinate siblings. - muzzle.md #2 (test-dep preservation): extend the preservation list to cover testRuntimeOnly / latestDepTestRuntimeOnly / forkedTestRuntimeOnly. Runtime-only test deps do NOT trigger compile failures if dropped, so losing them silently removes cross-instrumentation coexistence coverage (e.g. rxjava-3.0's testRuntimeOnly on rxjava-2.0). - instrumenter-module.md: broaden the pre-regen source-file enumeration from `src/main/java` to every production source set: src/main/java17, src/main/java11, src/main/groovy, src/main/scala, src/main/kotlin. Kafka-clients-3.8 and jetty-server-12.0 keep classes under java17; a `find` limited to `src/main/java` misses them. All five findings are P2 severity per Codex classification; each corrects a case where the iter-2 rule was too narrow and could mislead a regen.
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Jul 27, 2026
…w feedback (#11990) skill(apm-integrations): library-native context-map pattern + wrap-placement guidance Adds two subsections to context-tracking.md driven by reactor-core-3.1 blind regen findings (dd-trace-java PR #11940): 1. **Library-native context maps — the *ContextBridge pattern** (RI-6). Prescribes preservation/regeneration of the Reactor-style context-bridge helper for libraries with a first-class Context concept (Reactor, Kotlin coroutines, JAX-RS, Vert.x). The subscriber-wrapping pattern alone is insufficient — regenerating a reactive module without the bridge silently breaks Spring WebFlux, Spring Kafka reactive, and related downstream libraries. 2. **Wrap placement and context-store lifecycle** (from @mcculls' review of PR #11940). Boundary-only wrapping, Subscriber-lifecycle stores, avoid double-wrapping. Prevents the "increased memory use" pattern the eval output demonstrated. Motivating incident: dd-trace-java PR #11940 eval dropped 5 of 7 master reactor-core-3.1 instrumentation classes including ReactorContextBridge, which caused spring-messaging-4.0's KafkaBatchListenerCoroutineTest to time out. Sources: - @mcculls on PR #11940 FluxInstrumentation.java:20 - docs/eval-research/cycles/2026-07-14-async-cycle-report.md RI-5, RI-6 - Master reference: dd-java-agent/instrumentation/reactor-core-3.1/ skill(apm-integrations): strengthen Rule #2 for regen — super(), package, classes, ordering Adds five prescriptions to instrumenter-module.md driven by async cycle iteration-1 findings (docs/eval-research/cycles/2026-07-14-async-cycle-report.md) plus @ygree review feedback on rxjava-3.0 PR #11939. 1. **super() alias strengthening (RI-1)** — concrete rxjava-3.0 example showing DD_TRACE_RXJAVA_3_ENABLED breakage when the version alias is dropped. Existing "preserve super() verbatim" rule was too abstract. 2. **Package layout preservation on regen (RI-4)** — concrete reactor-core-3.1 example showing graal-native-image cross-module reference breakage when the eval renamed reactor.core -> reactorcore. 3. **Enumerate all master *Instrumentation.java classes on regen (RI-5)** — the reactor-core-3.1 regen kept 2 of 7 master classes, silently dropping ReactorContextBridge and 4 others. Rule prescribes an explicit pre-generation enumeration + post-generation diff check. 4. **Preserve declarative-array ordering (NR-1)** — @ygree flagged "meaningless reshuffling" in helperClassNames(). Rule: preserve master's ordering unless a semantic change requires reordering. 5. **Hoist repeated Class.getName() in contextStore() (NR-2)** — @ygree flagged five inlined copies of Context.class.getName() as a regression from master's hoist pattern. Sources: - docs/eval-research/cycles/2026-07-14-async-cycle-report.md RI-1, RI-4, RI-5 - @ygree PR #11939 comments 3591691401, 3591695153 skill(apm-integrations): namespace-isolation fail block + dep version parity Adds three prescriptions to muzzle.md from async cycle iteration-1 findings and @mcculls review feedback. 1. **Namespace-isolation fail block for major-version siblings (RI-2).** rxjava-3.0 master has `muzzle { fail { name = "rxjava2-must-not-match" } }` to assert rxjava3 advice never matches rxjava2 coordinates. Eval dropped the block. Rule prescribes preservation for any module with a prior-major sibling module in the repo. 2. **compileOnly dep version parity on regen (RI-3).** rxjava-3.0 master uses reactive-streams 1.0.3; eval regenerated as 1.0.0, silently narrowing the tested API surface. Rule extends the existing testImplementation parity rule to compileOnly. 3. **Test-scope build.gradle dep preservation (NR-5, @mcculls PR #11940).** reactor-core-3.1 eval dropped 8 testImplementation and latestDepTest deps that back annotation-driven tests and cross-module interop tests. Rule prescribes superset-of-master semantics for test deps. skill(apm-integrations): latestDepTest source set + no banner comments in tests Adds two prescriptions to tests.md from async cycle iteration-1 findings and @ygree review feedback. 1. **latestDepTest source-set preservation (RI-7).** reactor-core-3.1 master has src/latestDepTest/groovy/ for version-sensitive tests. The eval collapsed all tests into src/test/java/, which caused Schedulers.elastic() (removed in Reactor 3.4+) to break :latestDepTest compilation across all JVM shards. Rule prescribes preserving the split when master has it, and using it for libraries with breaking API changes across recent minor versions. 2. **No banner comments in test files (NR-4).** @ygree flagged `// --------- Successful completion ---------` style banners in RxJava3ResultExtensionTest.java as "distracting and don't offer much value because their scope is unclear." Rule: omit or extract into separate test classes with focused Javadoc. skill(apm-integrations): no inline explanatory comments in Advice methods Adds NR-3 from @ygree review of PR #11939. Advice bodies are typically short; the wrapper/helper class is where reviewers look to understand semantics. Duplicating the explanation as a `//`-comment at the advice call site inflates the diff and drifts out of sync with the wrapper's Javadoc. Source: @ygree, PR #11939 comment on SingleInstrumentation.java:55. skill(apm-integrations): address Copilot review on #11990 — latestDepTest nuance, find vs ls glob, muzzle fail scope, ContextStore implementation accuracy skill(apm-integrations): address Codex review on #11990 — 5 P2 comments - context-tracking.md: narrow ContextStore key rule — Reactor uses Publisher/Subscriber; JAX-RS uses ContainerRequestContext; Vert.x uses its own Context; coroutines use Continuation/CoroutineContext. Do not force Reactor's key type onto libraries that don't expose Publisher / Subscriber. Also broaden lifecycle-boundary examples per library shape. - tests.md: distinguish latest-only APIs (belong in src/latestDepTest/) from removed-in-latest APIs (belong in src/test/, or use replacement API in latestDepTest). The Reactor Schedulers.elastic() removal is the removed-in-latest case, not the latest-only case. - muzzle.md #1 (fail-block scope): explicitly show same-coordinate cases (jedis/okhttp/jetty-server) alongside different-coordinate cases (rxjava, jms api). The bounded 'versions' range in the fail block is what asserts non-overlap for same-coordinate siblings. - muzzle.md #2 (test-dep preservation): extend the preservation list to cover testRuntimeOnly / latestDepTestRuntimeOnly / forkedTestRuntimeOnly. Runtime-only test deps do NOT trigger compile failures if dropped, so losing them silently removes cross-instrumentation coexistence coverage (e.g. rxjava-3.0's testRuntimeOnly on rxjava-2.0). - instrumenter-module.md: broaden the pre-regen source-file enumeration from `src/main/java` to every production source set: src/main/java17, src/main/java11, src/main/groovy, src/main/scala, src/main/kotlin. Kafka-clients-3.8 and jetty-server-12.0 keep classes under java17; a `find` limited to `src/main/java` misses them. All five findings are P2 severity per Codex classification; each corrects a case where the iter-2 rule was too narrow and could mislead a regen. skill(apm-integrations): condense regen-preservation content, wire new rules into SKILL.md Feedback from @mcculls on this PR and separately from a senior engineer: async is a hard area where AI output should be a starting point for human+AI iteration, not held to a "perfect on first try" bar. Most of this PR's new content was regen-specific "keep things stable when rewriting" directives, disproportionate for a skill whose SKILL.md is otherwise written entirely for the common case (writing a new integration). 8 of the 12 new sections fell into this category. Collapsed all 8 into a single "editing an existing module" note per file (3 files), each a few sentences: read the current file, preserve what's there unless you have a reason to change it, applies to super()/package/class-set/ordering/dependencies/test-source-sets alike. Kept exactly one concrete example (ReactorContextBridge — the highest-stakes case, since dropping it silently breaks sibling modules that reference the class by FQN) instead of one narrated failure story per rule. Net: ~365 lines added by the PR, ~200 removed here. The 4 sections that are genuine new async-instrumentation content (library-native context maps / *ContextBridge pattern, wrap-placement memory considerations, no-inline-advice-comments, no-banner-comments) are unchanged — those aren't regen-specific, they apply to any reactive library instrumentation, new or edited. Also addresses the Datadog Autotest P1 finding (2026-07-21): the new rules existed in reference files but SKILL.md's per-step pointers were generic ("read this file") rather than pointing at the specific new subsections. Added explicit pointers at Steps 4.1, 5, 7, and 9.2/9.3 so a code-gen LLM sees "read the ContextBridge section" / "add the namespace-isolation fail block" inline in its step-by-step flow instead of needing to discover them by skimming a 200+ line reference file. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> heading fix Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com> Potential fix for pull request finding Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com> skill(apm-integrations): fix 4 factual errors from Codex review — verified against dd-trace-java source Codex flagged (2026-07-23) that the previous fix broadening the ContextBridge rule beyond Reactor invented plausible-sounding but factually wrong specifics for 3 libraries. Verified each claim against actual dd-trace-java modules before fixing: - JAX-RS: SKILL.md listed it as needing a ContextTracking bridge, but AbstractRequestContextInstrumentation extends InstrumenterModule.Tracing — it's span-owning code, not context-tracking. Removed the JAX-RS mention from SKILL.md and context-tracking.md entirely. - Kotlin coroutines: told agents to key a ContextStore by Continuation/CoroutineContext, but KotlinCoroutinesModule has no contextStore() at all — it uses ThreadContextElement (DatadogThreadContextElement implements ThreadContextElement<Context>). Corrected to point at the actual pattern. - Vert.x: told agents to key by io.vertx.core.Context, but that type is shared across many handler executions on the same Vert.x context — existing vertx-web instrumentation keys per-request state on RoutingContext instead. Keying by core Context would cause cross-request parentage. Corrected to point at RoutingContext. - Reactor wrap-placement: the "prefer subscriber over publisher key" guidance implied these were alternatives, but master's ReactorCoreModule.contextStore() keys BOTH Publisher (via HandoffContext, read before a subscriber exists) AND Subscriber (via Context, for the wrapping pattern) — they're complementary, not a choice. Reworded so the publisher-keyed store is called out as exempt from the "prefer bounded lifetime" optimization. Also fixed a latestDepTest gap Codex found: the prior wording said to put removed-in-latest-version tests in src/test/, but that's only safe when the module uses addTestSuite('latestDepTest') with separate sources. Modules using addTestSuiteForDir('latestDepTest', 'test') reuse src/test/ for both suites, so a removed-API test placed there still gets compiled against latestDepTestImplementation and fails the same way. Split the guidance by which build.gradle wiring the module uses. Root cause: the earlier fix (responding to a prior Codex comment about Reactor-only bias) generalized to other libraries from category-level reasoning ("JAX-RS surely uses a context map like Reactor does") rather than reading those libraries' actual dd-trace-java modules first. Fixed per the java-eval-research skill's canonical-first rule: don't publish a claim about library-specific behavior without checking the source. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Merge branch 'master' into feat/skill-async-iteration-2 Co-authored-by: devflow.devflow-routing-intake <devflow.devflow-routing-intake@kubernetes.us1.ddbuild.io>
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