Smallrye Reactive Messaging MetricDecorator disabled when micrometer extension is used

Describe the bug

I noticed that the MetricDecorator is vetoed in case Micrometer is enabled https://github.com/quarkusio/quarkus/blob/main/extensions/smallrye-reactive-messaging/deployment/src/main/java/io/quarkus/smallrye/reactivemessaging/deployment/SmallRyeReactiveMessagingProcessor.java#L346

Which is strange since there is an adapter layer for Eclipse Profile Metrics available.

Expected behavior

The expected behavior would be to keep the decorator even if Micrometer is used (Or even better use a decorator with Micrometer 😃 )

Actual behavior

MetricDecorator is disabled

https://github.com/quarkusio/quarkus/blob/main/extensions/smallrye-reactive-messaging/deployment/src/main/java/io/quarkus/smallrye/reactivemessaging/deployment/SmallRyeReactiveMessagingProcessor.java#L330

How to Reproduce?

Use a project with Kafka Reactive Messaging and enable the property

quarkus.reactive-messaging.metrics.enabled=true

Add Micrometer extension https://quarkus.io/guides/micrometer.

Check metrics is available in a QuarkusTest

given().when()
    .get("/q/metrics")
    .then()
    .statusCode(200)
    .body(containsString("base_mp_messaging_message_count_total{channel=\"receiver-channel\"}"));

Will fail

Output of uname -a or ver

No response

Output of java -version

No response

GraalVM version (if different from Java)

No response

Quarkus version or git rev

No response

Build tool (ie. output of mvnw --version or gradlew --version)

No response

Additional information

No response

[cescoffier]

Fixed with SmallRye Reactive Messaging 3.11 (which is not included in Quarkus).

[ebullient]

https://github.com/smallrye/smallrye-reactive-messaging/pull/1448 – is a beginning. I think there is a config question and a test question