001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.impl;
018
019import java.util.concurrent.CompletableFuture;
020
021import org.apache.camel.AsyncCallback;
022
023/**
024 * AsyncCallback that provides a CompletableFuture completed when async action is done
025 */
026public class AsyncCallbackToCompletableFutureAdapter<T> implements AsyncCallback {
027    private final CompletableFuture<T> future;
028    private volatile T result;
029
030    public AsyncCallbackToCompletableFutureAdapter() {
031        this(null);
032    }
033
034    public AsyncCallbackToCompletableFutureAdapter(T result) {
035        this(null, result);
036    }
037
038    public AsyncCallbackToCompletableFutureAdapter(CompletableFuture<T> future, T result) {
039        this.future = future != null ? future : new CompletableFuture<>();
040        this.result = result;
041    }
042
043    public void setResult(T result) {
044        this.result = result;
045    }
046
047    public CompletableFuture<T> getFuture() {
048        return future;
049    }
050
051    @Override
052    public void done(boolean doneSync) {
053        future.complete(result);
054    }
055}