ref(samples): [Queue Instrumentation 18] Move Kafka sources into queues.kafka package

[adinauer]

PR Stack (Queue Instrumentation)

• feat(core): [Queue Instrumentation 1] Add enableQueueTracing option and messaging span data conventions #5250
• feat(samples): [Queue Instrumentation 2] Add Kafka to Spring Boot 3 sample app #5253
• feat(spring-jakarta): [Queue Instrumentation 3] Add Kafka producer instrumentation #5254
• feat(spring-jakarta): [Queue Instrumentation 4] Add Kafka consumer instrumentation #5255
• feat(spring-boot-jakarta): [Queue Instrumentation 5] Add Kafka queue auto-configuration #5259
• test(samples): [Queue Instrumentation 6] Add Kafka queue system tests #5260
• feat(samples): [Queue Instrumentation 7] Add Kafka to Spring Boot 3 OTel sample apps #5265
• fix(spring-boot-jakarta): [Queue Instrumentation 8] Disable Sentry Kafka spans when OTel is active #5274
• fix(spring-jakarta): [Queue Instrumentation 9] Clean up stale ThreadLocal context in Kafka consumer interceptor #5279
• fix(spring-jakarta): [Queue Instrumentation 10] Fork root scopes and skip when OTel is active in Kafka consumer #5280
• fix(spring-jakarta): [Queue Instrumentation 11] Guard entire span lifecycle in Kafka producer interceptor #5281
• fix(spring-jakarta): [Queue Instrumentation 12] Add Kafka retry count attribute #5282
• fix(spring-jakarta): [Queue Instrumentation 13] Align enqueue time with Python #5283
• ref(kafka): [Queue Instrumentation 14] Extract sentry-kafka module #5288
• feat(samples): [Queue Instrumentation 15] Add opt-in Kafka console e2e coverage #5289
• fix(test): [Queue Instrumentation 16] Enable Kafka profile in system runner #5291
• feat(kafka): [Queue Instrumentation 17] Add manual consumer tracing helper #5312
• ref(samples): [Queue Instrumentation 18] Move Kafka sources into queues.kafka package #5313
• ref(samples): [Queue Instrumentation 19] Drop Kafka auto-config exclude from Spring Boot samples #5314
• ref(kafka): [Queue Instrumentation 20] Log Kafka instrumentation failures #5315
• fix(kafka): [Queue Instrumentation 21] Preserve third-party baggage on Kafka producer records #5316

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📜 Description

Move KafkaConsumer and KafkaController in the three Spring Boot Jakarta samples (sentry-samples-spring-boot-jakarta, sentry-samples-spring-boot-jakarta-opentelemetry, sentry-samples-spring-boot-jakarta-opentelemetry-noagent) into a queues.kafka sub-package.

No behavior change. Only the package declaration and file location change.

💡 Motivation and Context

Groups the Kafka-specific sample sources under a dedicated sub-package so future queue integrations can sit next to them under queues. Keeps the top-level sample package from accumulating integration-specific classes.

💚 How did you test it?

• ./gradlew :sentry-samples:sentry-samples-spring-boot-jakarta:compileJava :sentry-samples:sentry-samples-spring-boot-jakarta-opentelemetry:compileJava :sentry-samples:sentry-samples-spring-boot-jakarta-opentelemetry-noagent:compileJava — all compile
• ./gradlew spotlessApply apiDump

📝 Checklist

• I added GH Issue ID & Linear ID
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

🔮 Next steps

Continue on top of this branch for the next PR in the Queue Instrumentation stack.

#skip-changelog

⚠️ Merge this PR using a merge commit (not squash). Only the collection branch is squash-merged into main.

[github-actions]

Semver Impact of This PR

🟢 Patch (bug fixes)

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[sentry]

📲 Install Builds

Android

🔗 App Name	App ID	Version	Configuration
SDK Size	io.sentry.tests.size	8.37.1 (1)	release

⚙️ sentry-android Build Distribution Settings

[github-actions]

Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	284.02 ms	375.28 ms	91.26 ms
Size	0 B	0 B	0 B

Baseline results on branch: feat/queue-instrumentation-kafka-consumer-tracing

Startup times

Revision	Plain	With Sentry	Diff
c55bfb9	325.59 ms	387.87 ms	62.29 ms
14a9178	316.11 ms	341.69 ms	25.59 ms

App size

Revision	Plain	With Sentry	Diff
c55bfb9	0 B	0 B	0 B
14a9178	0 B	0 B	0 B