How to Handle Multiple Implementations of the Same REST Interface in Quarkus?

[SnehBratJha]

I'm migrating a JBoss EAP application to Quarkus. My application has multiple implementations of the same REST service interface for failover/fallback scenarios:

• ManagerClientImpl - Primary HTTP client (calls external service)
• ManagerClientBackup - Local fallback implementation

Both classes implement the same interface:

@Path("/rate")
public interface Service {
    @GET
    @Path("/convert")
    @Produces("application/json")
    Amount convert(@QueryParam("param") String param, ...);
}

The ErrorWhen building with Quarkus, I get:[ERROR] GET /rate is declared by:

[ERROR] ManagerClientImpl#convert
[ERROR] ManagerClientBackup#convert

[ERROR] at io.quarkus.resteasy.reactive.server.deployment.ResteasyReactiveProcessor.checkForDuplicateEndpoint(ResteasyReactiveProcessor.java:1504)
[ERROR] at io.quarkus.resteasy.reactive.server.deployment.ResteasyReactiveProcessor.setupEndpoints(ResteasyReactiveProcessor.java:731)

In JBoss, this configuration works fine.

Cannot significantly change existing architecture.
Both implementations must exist in the JAR (for producer pattern to work)

[geoand]

More details about this exist in https://stackoverflow.com/q/79826533/2504224