PR Stack (Queue Instrumentation)

• feat(core): Queue Instrumentation #5249
• 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
• test(spring-boot-jakarta): [Queue Instrumentation 22] Cover spring-kafka class-absence gate #5318
• fix(spring-jakarta): [Queue Instrumentation 23] Install Kafka context before trace setup #5319
• fix(kafka): [Queue Instrumentation 24] Read all baggage headers on consumers #5320
• fix(kafka): [Queue Instrumentation 25] Finish producer spans on failures #5321
• fix(kafka): [Queue Instrumentation 26] Mark producer interceptor experimental #5322
• fix(spring-jakarta): [Queue Instrumentation 27] Delegate Kafka record thread-state hooks #5323
• test(samples): [Queue Instrumentation 28] Cover OTel Jakarta Kafka coexistence in CI #5324
• fix(spring-jakarta): [Queue Instrumentation 29] Set body_size on Spring Kafka consumer transaction #5325

📜 Description

Both Kafka consumer tracing paths only forwarded lastHeader("baggage") into continueTrace(...).

This change reads every baggage header from the record and passes the full list into trace continuation in:

• SentryKafkaConsumerTracing
• SentryKafkaRecordInterceptor

It also adds tests covering multiple baggage headers for both implementations.

💡 Motivation and Context

Kafka records can legitimately carry multiple baggage headers. Reading only the last one drops earlier entries and can break distributed tracing interop with upstream OpenTelemetry or other W3C baggage producers.

Passing the full header list preserves the existing baggage context during queue trace continuation.

💚 How did you test it?

• ./gradlew spotlessApply apiDump :sentry-kafka:test --tests='io.sentry.kafka.SentryKafkaConsumerTracingTest' :sentry-spring-jakarta:test --tests='io.sentry.spring.jakarta.kafka.SentryKafkaRecordInterceptorTest'

📝 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

None.

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

#skip-changelog