How do I get the requests HttpHeaders in a CDI bean in Quarkus?

Question

I would like to get the AcceptableLanguage header of the originating request to select the correct translation language.

I thought that this would work:

import javax.ws.rs.core.HttpHeaders;

@ApplicationScoped
public class TranslationService{

   @Context HttpHeaders httpHeaders;
....
}

As it seems, I always result in a null value. When I try the @Context field directly in a RestEasy controller, the field is assigned with the current HttpHeaders object.

I already have tried to save the http headers inside a ContrainerRequestFilter to a @RequestScoped bean, althought the value seems to get lost again until the use in my TranslationService .

How can I, in quarkus, get or provide the requests http headers, so any bean can access them?

Answer 1

It actually did work with a ContainerRequestFilter

I added the following filter

@Provider
@PreMatching
public class UserInfoProvider implements ContainerRequestFilter {

    private final UserInfo userinfo;

    @Inject
    public UserInfoProvider(UserInfo userinfo) {
        this.userinfo = userinfo;
    }

    @Override
    public void filter(ContainerRequestContext requestContext) {
        List<Locale> acceptableLanguages = requestContext.getAcceptableLanguages();
        userinfo.setAcceptableLanguages(acceptableLanguages);
    }
}

of which the bean UserInfo is @RequestScoped