micrometer-cloudwatch feature fails to build as native image

[JamieCressey]

Problem

The AWS v2 SDK is failing to build into a native image, and is being included (or the CloudWatch subsection is) as part of the micrometer-cloudwatch feature.

Error: Classes that should be initialized at run time got initialized during image building:
 io.netty.util.AbstractReferenceCounted the class was requested to be initialized at build time (from the command line). To see why io.netty.util.AbstractReferenceCounted got initialized use -H:+TraceClassInitialization

Error: Use -H:+ReportExceptionStackTraces to print stacktrace of underlying exception
Error: Image build request failed with exit status 1

Steps to Reproduce

• mn create-app test --features aws-api-gateway-graal --features micrometer-cloudwatch
• cd test
• ./docker-build.sh

mn --version
| Micronaut Version: 1.2.8
| JVM Version: 11.0.5

[ilopmar]

If you create a new application (tested with Micronaut 2.0.1):

mn create-app foo --features=micrometer-cloudwatch,graalvm

And then add --report-unsupported-elements-at-runtime to native-image.properties it works. The usage of that flag is discouraged so I've opened and issue on graalvm issue tracker: oracle/graal#2736

[charlie-harvey]

I bumped into this because I need aws-sdk-v2 explicitly. I am reading from and writhing to a bucket. Thanks for the workaround.

[alvarosanchez]

This is working as of Micronaut 2.2