com.yahoo.jdisc.handler.CallableResponseDispatch Maven / Gradle / Ivy
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.handler;
import com.yahoo.jdisc.Response;
import java.util.concurrent.Callable;
/**
* This is a convenient subclass of {@link ResponseDispatch} that implements the {@link Callable} interface. This
* should be used in place of {@link ResponseDispatch} if you intend to schedule its execution. Because {@link #call()}
* does not return until the entirety of the {@link Response} and its content have been consumed, you can use the
* Future return value of ExecutorService.submit(Callable) to wait for it to complete.
*
* @author Simon Thoresen Hult
*/
public abstract class CallableResponseDispatch extends ResponseDispatch implements Callable {
private final ResponseHandler handler;
/**
* Constructs a new instances of this class over the given {@link ResponseHandler}. Invoking {@link #call()} will
* dispatch to this handler.
*
* @param handler The ResponseHandler to dispatch to.
*/
public CallableResponseDispatch(ResponseHandler handler) {
this.handler = handler;
}
@Override
public final Boolean call() throws Exception {
return dispatch(handler).get();
}
}