Support for the Micronaut framework?

[bixu]

Hi all, has there been consideration of adding support for the Micronaut "cloud-native" framework?

[mateuszrzeszutek]

Hey @bixu ,
We probably won't have the capacity to implement this ourselves, but we'll gladly accept external contributions.

[donbeave]

Hello, @bixu!

I'm working on micronaut-opentelemetry module, which uses some libraries from opentelemetry-java-instrumentation project. That's why I'm implementing OpenTelemetry JDBC instrumentation library: #3367, which will allow to use it in GraalVM images.

Please follow this issue regarding the official OpenTelemetry module in Micronaut 3.0: https://github.com/micronaut-projects/micronaut-core/issues/5138.

[tkhoiwal]

I tested simple helloworld as well as two tier micronaut applications with OT agent. I see basic support is already present due to underlying Netty support by OT agent. What are we looking specifically with micronaut support?

[donbeave]

@tkhoiwal the most interesting part of Micronaut is the ability to build the app with GraalVM native image feature. For such use case java agent will not work, that's why I have started to working on micronaut-opentelemetry module: https://github.com/expatiat/micronaut-opentelemetry

[jkwatson]

@tkhoiwal the most interesting part of Micronaut is the ability to build the app with GraalVM native image feature. For such use case java agent will not work, that's why I have started to working on micronaut-opentelemetry module: https://github.com/expatiat/micronaut-opentelemetry

Just peeked at that repo for a brief moment and it looks like you have duplicated instrumentation for grpc. Any reason why not to just use the grpc library instrumentation maintainer here as a dependency?

[donbeave]

@jkwatson hm, actually I'm using io.opentelemetry.instrumentation:opentelemetry-grpc-1.6. If you check the server and client tracing both using this library:

1. server - https://github.com/expatiat/micronaut-opentelemetry/blob/71bc9764d186bcd8dee77c68206f0f1741b04439/opentelemetry/src/main/java/io/micronaut/opentelemetry/instrumentation/grpc/server/GrpcServerTracingInterceptorConfiguration.java
2. client - https://github.com/expatiat/micronaut-opentelemetry/blob/master/opentelemetry/src/main/java/io/micronaut/opentelemetry/instrumentation/grpc/client/GrpcClientTracingInterceptorConfiguration.java

[donbeave]

The main idea for micronaut-opentelemetry is to reuse as much as possible from https://github.com/open-telemetry/opentelemetry-java-instrumentation/tree/main/instrumentation, that's one of the reasons why I have implemented JDBC instrumentation library: #3367.

[jkwatson]

@jkwatson hm, actually I'm using io.opentelemetry.instrumentation:opentelemetry-grpc-1.6. If you check the server and client tracing both using this library:

oh, my apologies, I saw the packages and made assumptions. You're just providing micronaut configuration. 👍🏽

[tkhoiwal]

@tkhoiwal the most interesting part of Micronaut is the ability to build the app with GraalVM native image feature. For such use case java agent will not work, that's why I have started to working on micronaut-opentelemetry module: https://github.com/expatiat/micronaut-opentelemetry

Thanks @donbeave for details of the usecase.

[donbeave]

Micronaut has added OpenTelemetry support in its micronaut-tracing module, it's available as a SNAPSHOT build for now: micronaut-projects/micronaut-tracing#65 (comment)

[mateuszrzeszutek]

This one is already done: https://micronaut-projects.github.io/micronaut-tracing/latest/guide/#opentelemetry