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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package ai.vespa.feed.client.impl;
import ai.vespa.feed.client.HttpResponse;
import java.util.concurrent.CompletableFuture;
/**
* Determines the number of requests to have inflight at any point.
*
* @author jonmv
*/
interface Throttler {
/**
* A request was just sent with {@code vessel}, with {@code inflight} total in flight.
*/
void sent(long inflight, CompletableFuture<HttpResponse> vessel);
/**
* A successful response was obtained.
*/
void success();
/**
* A throttle signal was obtained from the server.
*/
void throttled(long inflight);
/**
* The target inflight operations right now.
*/
long targetInflight();
}
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