[yashdotdev13]

Summary

Closes #2856.

Adds support for configuring the maximum age of transactional Kafka producers through the Kafka binder's transaction properties.

• Introduces the spring.cloud.stream.kafka.binder.transaction.max-age configuration property.
• Applies the configured maximum age to the transactional DefaultKafkaProducerFactory.
• Adds unit and integration tests to verify property configuration and application.

Configuration Example

spring:
  cloud:
    stream:
      kafka:
        binder:
          transaction:
            transaction-id-prefix: tx-
            max-age: 5m

Testing

• KafkaBinderConfigurationPropertiesTest — passed.
• KafkaBinderConfigurationWithTransactionsTest — passed.
• Full Kafka binder test suite — 169 tests run, 0 failures, 10 skipped.
• git diff --check — passed.

[olegz]

If you look at the PR it shows two deprecations. Can you please address them?

[yashdotdev13]

Thanks for pointing this out! I have replaced the deprecated KafkaProperties.buildConsumerProperties() and KafkaProperties.buildProducerProperties() calls with KafkaConfigBuilder, following the implementation of the deprecated methods.

I've also verified the changes by running KafkaBinderConfigurationPropertiesTest — all 14 tests passed.