Interface-based configuration

[hwellmann]

Feature request

Support interface-based configuration.

This is already implemented in Apache DeltaSpikeConfiguration.

Example

@ApplicationScoped
@Configuration(prefix = "com.example.myapp.client.")
public interface MyConfig {

    @ConfigProperty(name = "url")
    String url();

    @ConfigProperty(name = "timeout", defaultValue = "30000")
    long timeout();
}

Benefits

• Configuration consumers can simply inject the interface and call its methods.
• Configuration property names do not get duplicated for each consumer across the application.

[OndroMih]

This is a duplicate of #240, let's discuss there.

I'm closing this issue.