kikaha.uworkers.api.Response Maven / Gradle / Ivy

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package kikaha.uworkers.api;

import java.util.function.BiConsumer;
import lombok.RequiredArgsConstructor;

/**
 * Represents a response promise from a given task sent to a Worker.
 */
public interface Response {

	/**
	 * Awaits for a response to come.
	 *
	 * @return
	 */
	 RESP response();

	/**
	 * Awaits for a response to come.
	 *
	 * @param targetClass
	 * @return
	 */
	 RESP responseAs( Class targetClass );

	/**
	 * Attach a listener that will be notified when the response is available.
	 *
	 * @param listener
	 * @return
	 */
	Response then( BiConsumer listener );

	/**
	 * Store an object which its class is not initially known. It allow developers
	 * to as the held object to a more convenient type more easily.
	 */
	@RequiredArgsConstructor
	class UndefinedObject {
		final Object object;

		public  T as(Class type ) {
			return (T) object;
		}

		public  T get() { return (T)object; }
	}
}