java - Is there any way to assign value to final variable from configuration?

Question

I have a method that will listen to the webhook queue and the method signature needs the webhook name as a final variable. This WEBHOOK_QUEUE variable needs to be different from the environment to the environment. (sandbox, production) Is there any way to solve this without changing the code In a different environment?

@ApplicationScoped
public class WebhookEventObserver {
private static final String WEBHOOK_QUEUE = "V3-SANDBOX-WEBHOOK";


@Inject
private WebhookProcessor processor;

public void onMessage(@Observes @Queue(name = WEBHOOK_QUEUE) MessageEvent event) {
    logger.info("Received [{}] message from [{}]", event, WEBHOOK_QUEUE);
    processor.handleEvent(event);
}
}

question from:https://stackoverflow.com/questions/65869275/is-there-any-way-to-assign-value-to-final-variable-from-configuration

Answer 1

Change the field from a constant to an injected configuration property:

@ApplicationScoped
public class WebhookEventObserver {

    @Inject @ConfigurationValue("webhookQueue")
    private String webhookQueue;

    @Inject
    private WebhookProcessor processor;

    public void onMessage(@Observes MessageEvent event) {
        // check queue here
        logger.info("Received [{}] message from [{}]", event, webhookQueue);
        processor.handleEvent(event);
    }
}

You can't do the @Queue(name = WEBHOOK_QUEUE) with a dynamic queue name, so remove that event qualifier, and add logic to check it.

Don't know what MessageEvent is, so don't know how to check the queue of the event.