Micronaut 3 to 4 migration issue: request.getHaaders.getFirst (key, type.class) can no longer convert

[ethanhere]

In micronaut 3 we have the following code working
io.micronaut.http.HttpRequest<?> request = ...
HttpHeaders headers = request.getHeaders();
Optional optionalMyAppId = headers.getFirst("id",
MyAppId.class);
final MyAppId appId = optionalMyAppId.orElse(null);

Where MyAppId is a pojo class:
public final class MyAppId {
private final String value;
private MyAppId(String value) {
this.value = value;
}

@JsonCreator
public static MyAppId valueOf(@JsonProperty String value) {
    MyAppIdValidator.validateMyAppId(value);
    return new MyAppId(value);
}

@JsonCreator
public static AccountId of(@JsonProperty String value) {
    return valueOf(value);
}

}

In micronaut 3, it will get the value of "id" header and use MyAppId.of method to create a MyAppId object.

This code no longer works in micronaut 4. I debugged into the code and found in

micronaut-core/core/src/main/java/io/micronaut/core/convert/DefaultMutableConversionService.java

Line 237 in 0118db9

final AnnotationMetadata annotationMetadata = context.getAnnotationMetadata();

It will return EmptyAnnotationMetadata and not able to use of method to convert.

Can you advise how to make our original code working?

[sdelamo]

Please, attach a sample application using Micronaut Framework 3 working and the same 4 with Micronaut Framework 4 showing the regression. @dstepanov any clue?

[graemerocher]

attach an example to an issue report

[ethanhere]

githubrepro.zip
Hi @graemerocher @sdelamo @diroussel @aalmiray attached is a repro. Please take a look and suggest a fix. Thanks.

[graemerocher]

could you create an associated issue and attach it there. Thanks.

[ethanhere]

githubrepro.zip
attaching the reproducer.
What do you mean by associated issue? Can you see the attached zip file? you can create that issue and put the reproducer file there. @graemerocher

[sdelamo]

I have converted this into an issue. #10914