Migrate android module layout discovery to the variant API

[daniel-mohedano]

What Does This Do

• Replaces the legacy applicationVariants and libraryVariants APIs with Android Components callbacks registered before project evaluation.
• Binds each Android test component to its exact Gradle Test task through configureTestTask.
• Gets production classes from the active variant's ScopedArtifact.CLASSES using Scope.PROJECT.
• Supports the AGP 8.X Kotlin Multiplatform onVariant(Action) API and obtains source roots from the matching main compilation.
• Applies the existing generated-class exclusions to directory and JAR outputs, and restricts destinations to .class files.
• Adds unit tests and a Gradle smoke fixture for the new lifecycle and artifact wiring.

Motivation

AGP 9 disables the legacy variant APIs by default, and AGP 10 is expected to remove them. The existing discovery logic would therefore stop finding Android module layouts on newer AGP versions.

The previous implementation also inferred the production variant from test-task names and hard-coded compiler output locations. This could miss valid production outputs or include test fixtures and project-local dependency artifacts in coverage.

Using the relationship exposed by AGP gives us the direct flow from production variant, to test component, to the exact Gradle test task.

Additional Notes

Older AGP versions that do not expose configureTestTask fall back to the generic Gradle module layout.

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
• Once approved, use merge queue to merge the PR

Jira ticket: SDTEST-3803

[datadog-datadog-prod-us1-2]

Bits has a CI fix ready

🟢 Investigated · 🟢 Fix prepared · ⚪ Validation skipped · 🟠 Ready

AndroidGradleUtilsTest uses Gradle’s ProjectBuilder, which is compiled for Java 17 in the Gradle API added by this change. The Gradle instrumentation tests are now constrained to Java 17+ so Java 8 and 11 jobs skip this incompatible suite.

Commit fix to this PR

---

View in Datadog | Reviewed commit 3a95df2 · Any feedback? Reach out in #deveng-pr-agent

[cit-pr-commenter-54b7da]

Test Environment - sbt-scalatest

Job Status: 🟢 success

Scenario	This PR (%)	7d median	Δ 7d	30d median	Δ 30d	runs (7d/30d)
agent	54.94	55.43	$\color{green}{\blacktriangledown}$ -0.49	55.43	$\color{green}{\blacktriangledown}$ -0.49	46/254
agentEvpProxy	54.54	n/a	n/a	n/a	n/a	-

Baseline: median of @test.tracer_overhead on main (gitlab) over the last 7/30 days, per OSS project & scenario. Δ = this PR − baseline median; red ▲ = more overhead, green ▽ = less overhead than baseline.

[datadog-datadog-prod-us1-2]

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 69.73% (+11.94%)

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 3a95df2 | Docs | Datadog PR Page | Give us feedback!}

[cit-pr-commenter-54b7da]

Test Environment - nebula-release-plugin

Job Status: 🔴 failed

Scenario	This PR (%)	7d median	Δ 7d	30d median	Δ 30d	runs (7d/30d)
agent	37.63	37.15	$\color{red}{\blacktriangle}$ +0.48	36.42	$\color{red}{\blacktriangle}$ +1.21	29/134
agentless	36.46	36.42	$\color{red}{\blacktriangle}$ +0.04	36.42	$\color{red}{\blacktriangle}$ +0.04	21/126
agentlessCodeCoverage	44.71	44.48	$\color{red}{\blacktriangle}$ +0.23	44.48	$\color{red}{\blacktriangle}$ +0.23	21/126
agentlessLineCoverage	54.21	55.43	$\color{green}{\blacktriangledown}$ -1.22	74.82	$\color{green}{\blacktriangledown}$ -20.61	21/127

Baseline: median of @test.tracer_overhead on main (gitlab) over the last 7/30 days, per OSS project & scenario. Δ = this PR − baseline median; red ▲ = more overhead, green ▽ = less overhead than baseline.

[cit-pr-commenter-54b7da]

Test Environment - pass4s

Job Status: 🟢 success

Scenario	This PR (%)	7d median	Δ 7d	30d median	Δ 30d	runs (7d/30d)
agent	11.58	9.54	$\color{red}{\blacktriangle}$ +2.04	9.73	$\color{red}{\blacktriangle}$ +1.85	25/124
agentless	6.04	8.29	$\color{green}{\blacktriangledown}$ -2.25	9.73	$\color{green}{\blacktriangledown}$ -3.69	25/124
agentlessCodeCoverage	17.58	16.04	$\color{red}{\blacktriangle}$ +1.54	16.69	$\color{red}{\blacktriangle}$ +0.89	23/122

Baseline: median of @test.tracer_overhead on main (gitlab) over the last 7/30 days, per OSS project & scenario. Δ = this PR − baseline median; red ▲ = more overhead, green ▽ = less overhead than baseline.

[cit-pr-commenter-54b7da]

Test Environment - netflix-zuul

Job Status: 🔴 failed

Scenario	This PR (%)	7d median	Δ 7d	30d median	Δ 30d	runs (7d/30d)
agent	83.55	87.80	$\color{green}{\blacktriangledown}$ -4.25	87.80	$\color{green}{\blacktriangledown}$ -4.25	34/144
agentless	80.24	81.05	$\color{green}{\blacktriangledown}$ -0.81	81.05	$\color{green}{\blacktriangledown}$ -0.81	25/132
agentlessCodeCoverage	96.60	97.04	$\color{green}{\blacktriangledown}$ -0.44	97.04	$\color{green}{\blacktriangledown}$ -0.44	24/130
agentlessLineCoverage	112.15	111.62	$\color{red}{\blacktriangle}$ +0.53	111.62	$\color{red}{\blacktriangle}$ +0.53	23/129

Baseline: median of @test.tracer_overhead on main (gitlab) over the last 7/30 days, per OSS project & scenario. Δ = this PR − baseline median; red ▲ = more overhead, green ▽ = less overhead than baseline.

[cit-pr-commenter-54b7da]

Test Environment - heliboard

Job Status: 🟢 success

Scenario	This PR (%)	7d median	Δ 7d	30d median	Δ 30d	runs (7d/30d)
agent	10.28	10.54	$\color{green}{\blacktriangledown}$ -0.26	9.73	$\color{red}{\blacktriangle}$ +0.55	25/109

Baseline: median of @test.tracer_overhead on main (gitlab) over the last 7/30 days, per OSS project & scenario. Δ = this PR − baseline median; red ▲ = more overhead, green ▽ = less overhead than baseline.

[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	14.09 s	13.95 s	[+0.2%; +1.8%] (maybe worse)
startup:insecure-bank:tracing:Agent	12.96 s	13.03 s	[-1.3%; +0.2%] (no difference)
startup:petclinic:appsec:Agent	16.92 s	16.75 s	[+0.1%; +2.0%] (maybe worse)
startup:petclinic:iast:Agent	16.98 s	16.98 s	[-0.8%; +0.8%] (no difference)
startup:petclinic:profiling:Agent	16.80 s	16.92 s	[-2.2%; +0.8%] (no difference)
startup:petclinic:sca:Agent	16.74 s	16.72 s	[-0.8%; +1.0%] (no difference)
startup:petclinic:tracing:Agent	16.14 s	16.05 s	[-0.4%; +1.5%] (no difference)

Commit: 3a95df2d · 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.

[cit-pr-commenter-54b7da]

Test Environment - reactive-streams-jvm

Job Status: 🔴 failed

Scenario	This PR (%)	7d median	Δ 7d	30d median	Δ 30d	runs (7d/30d)
agent	17.22	21.65	$\color{green}{\blacktriangledown}$ -4.43	21.65	$\color{green}{\blacktriangledown}$ -4.43	35/150
agentless	17.92	19.20	$\color{green}{\blacktriangledown}$ -1.28	18.82	$\color{green}{\blacktriangledown}$ -0.90	24/133
agentlessCodeCoverage	19.46	19.99	$\color{green}{\blacktriangledown}$ -0.53	19.99	$\color{green}{\blacktriangledown}$ -0.53	24/129
agentlessLineCoverage	24.88	26.98	$\color{green}{\blacktriangledown}$ -2.10	29.23	$\color{green}{\blacktriangledown}$ -4.35	21/127

Baseline: median of @test.tracer_overhead on main (gitlab) over the last 7/30 days, per OSS project & scenario. Δ = this PR − baseline median; red ▲ = more overhead, green ▽ = less overhead than baseline.

[cit-pr-commenter-54b7da]

Test Environment - sonar-kotlin

Job Status: 🔴 failed

Scenario	This PR (%)	7d median	Δ 7d	30d median	Δ 30d	runs (7d/30d)
agent	12.25	12.87	$\color{green}{\blacktriangledown}$ -0.62	12.87	$\color{green}{\blacktriangledown}$ -0.62	32/134
agentless	12.73	12.37	$\color{red}{\blacktriangle}$ +0.36	12.12	$\color{red}{\blacktriangle}$ +0.61	22/120
agentlessCodeCoverage	15.26	15.11	$\color{red}{\blacktriangle}$ +0.15	15.11	$\color{red}{\blacktriangle}$ +0.15	22/120
agentlessLineCoverage	18.03	17.38	$\color{red}{\blacktriangle}$ +0.65	18.45	$\color{green}{\blacktriangledown}$ -0.42	21/121

Baseline: median of @test.tracer_overhead on main (gitlab) over the last 7/30 days, per OSS project & scenario. Δ = this PR − baseline median; red ▲ = more overhead, green ▽ = less overhead than baseline.

[cit-pr-commenter-54b7da]

Test Environment - jolokia

Job Status: 🔴 failed

Scenario	This PR (%)	7d median	Δ 7d	30d median	Δ 30d	runs (7d/30d)
agent	93.33	95.12	$\color{green}{\blacktriangledown}$ -1.79	93.23	$\color{red}{\blacktriangle}$ +0.10	32/145
agentless	88.52	89.58	$\color{green}{\blacktriangledown}$ -1.06	89.58	$\color{green}{\blacktriangledown}$ -1.06	23/135
agentlessCodeCoverage	97.86	99.00	$\color{green}{\blacktriangledown}$ -1.14	99.00	$\color{green}{\blacktriangledown}$ -1.14	22/132
agentlessLineCoverage	98.79	99.00	$\color{green}{\blacktriangledown}$ -0.21	99.00	$\color{green}{\blacktriangledown}$ -0.21	21/129

Baseline: median of @test.tracer_overhead on main (gitlab) over the last 7/30 days, per OSS project & scenario. Δ = this PR − baseline median; red ▲ = more overhead, green ▽ = less overhead than baseline.

[cit-pr-commenter-54b7da]

Test Environment - okhttp

Job Status: 🔴 failed

Scenario	This PR (%)	7d median	Δ 7d	30d median	Δ 30d	runs (7d/30d)
agent	16.84	19.59	$\color{green}{\blacktriangledown}$ -2.75	19.20	$\color{green}{\blacktriangledown}$ -2.36	37/140
agentless	15.20	19.59	$\color{green}{\blacktriangledown}$ -4.39	19.20	$\color{green}{\blacktriangledown}$ -4.00	26/127
agentlessCodeCoverage	18.41	22.09	$\color{green}{\blacktriangledown}$ -3.68	22.54	$\color{green}{\blacktriangledown}$ -4.13	27/128
agentlessLineCoverage	33.99	38.67	$\color{green}{\blacktriangledown}$ -4.68	43.60	$\color{green}{\blacktriangledown}$ -9.61	25/129

Baseline: median of @test.tracer_overhead on main (gitlab) over the last 7/30 days, per OSS project & scenario. Δ = this PR − baseline median; red ▲ = more overhead, green ▽ = less overhead than baseline.

[cit-pr-commenter-54b7da]

Test Environment - spring_boot

Job Status: 🔴 failed

Scenario	This PR (%)	7d median	Δ 7d	30d median	Δ 30d	runs (7d/30d)
agent	9.51	16.04	$\color{green}{\blacktriangledown}$ -6.53	16.36	$\color{green}{\blacktriangledown}$ -6.85	35/140
agentless	9.96	9.73	$\color{red}{\blacktriangle}$ +0.23	9.73	$\color{red}{\blacktriangle}$ +0.23	25/130
agentlessCodeCoverage	13.28	13.40	$\color{green}{\blacktriangledown}$ -0.12	13.40	$\color{green}{\blacktriangledown}$ -0.12	25/130
agentlessLineCoverage	22.05	22.09	$\color{green}{\blacktriangledown}$ -0.04	32.30	$\color{green}{\blacktriangledown}$ -10.25	24/129

Baseline: median of @test.tracer_overhead on main (gitlab) over the last 7/30 days, per OSS project & scenario. Δ = this PR − baseline median; red ▲ = more overhead, green ▽ = less overhead than baseline.

[cit-pr-commenter-54b7da]

Test Environment - sonar-java

Job Status: 🔴 failed

Scenario	This PR (%)	7d median	Δ 7d	30d median	Δ 30d	runs (7d/30d)
agent	41.52	13.67	$\color{red}{\blacktriangle}$ +27.85	12.12	$\color{red}{\blacktriangle}$ +29.40	31/137
agentless	17.84	21.22	$\color{green}{\blacktriangledown}$ -3.38	15.72	$\color{red}{\blacktriangle}$ +2.12	21/127
agentlessCodeCoverage	111.57	84.36	$\color{red}{\blacktriangle}$ +27.21	82.69	$\color{red}{\blacktriangle}$ +28.88	21/127
agentlessLineCoverage	146.91	107.25	$\color{red}{\blacktriangle}$ +39.66	133.64	$\color{red}{\blacktriangle}$ +13.27	20/126

Baseline: median of @test.tracer_overhead on main (gitlab) over the last 7/30 days, per OSS project & scenario. Δ = this PR − baseline median; red ▲ = more overhead, green ▽ = less overhead than baseline.