SpringBoot Dependency management for Apache Kafka is incomplete

The current Apache Kafka management is like this:

    library("Kafka", "3.0.0") {
        group("org.apache.kafka") {
            modules = [
                "connect-api",
                "connect-basic-auth-extension",
                "connect-file",
                "connect-json",
                "connect-runtime",
                "connect-transforms",
                "kafka-clients",
                "kafka-metadata",
                "kafka-log4j-appender",
                "kafka-streams",
                "kafka-streams-scala_2.12",
                "kafka-streams-scala_2.13",
                "kafka-streams-test-utils",
                "kafka-tools",
                "kafka_2.12",
                "kafka_2.13"
            ]
        }
    }

There are two more dependencies which would really use for testing in Spring for Apache Kafka when our @EmbeddedKafka is involved:

        <dependency>
            <groupId>org.apache.kafka</groupId>
            <artifactId>kafka-clients</artifactId>
            <classifier>test</classifier>
            <scope>test</scope>
            <version>${kafka.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.kafka</groupId>
            <artifactId>kafka_2.13</artifactId>
            <classifier>test</classifier>
            <scope>test</scope>
            <version>${kafka.version}</version>
        </dependency>

Pay attention to that <classifier>test</classifier>.

They come as transitive dependencies from spring-kafka-test but if we need to override an Apache Kafka version for some reason, we also have to add those two dependencies explicitly: https://docs.spring.io/spring-kafka/docs/2.8.1-SNAPSHOT/reference/html/#update-deps.

It probably would be much nicer just be let end-users to specify a Kafka version like ext['kafka.version'] = '2.8.1' and everything else comes to us from Spring Boot management.

Thanks

P.S. I would PR the fix, but I don't know how specify a test classifier in Gradle configuration 😄

Comment From: artembilan

An Apache Kafka JIRA ticket for BOM publishing request: https://issues.apache.org/jira/browse/KAFKA-9060

Comment From: wilkinsona

This is blocked by #29298.

Comment From: garyrussell

Sweet! Thanks @wilkinsona