GuavaSpanConsumer.java

/**
 * Copyright 2015-2016 The OpenZipkin Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */
package zipkin.storage.guava;

import com.google.common.util.concurrent.ListenableFuture;
import java.util.List;
import zipkin.Span;
import zipkin.storage.AsyncSpanConsumer;

/**
 * An interface that is equivalent to {@link AsyncSpanConsumer} but exposes methods as
 * {@link ListenableFuture} to allow asynchronous composition.
 */
// @FunctionalInterface
public interface GuavaSpanConsumer {

  /**
   * Version of {@link AsyncSpanConsumer} that returns a {@link ListenableFuture}.
   */
  ListenableFuture<Void> accept(List<Span> spans);
}