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TRAC D.A.P. data library, interfaces and core functionality for working with primary data

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/*
 * Licensed to the Fintech Open Source Foundation (FINOS) under one or
 * more contributor license agreements. See the NOTICE file distributed
 * with this work for additional information regarding copyright ownership.
 * FINOS licenses this file to you 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 org.finos.tracdap.common.async;

import com.google.common.util.concurrent.FutureCallback;
import com.google.common.util.concurrent.MoreExecutors;

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.CompletionStage;


public class Futures {

    public static 
    CompletionStage javaFuture(com.google.common.util.concurrent.ListenableFuture guavaFuture) {

        var javaFuture = new CompletableFuture();

        com.google.common.util.concurrent.Futures.addCallback(guavaFuture, new FutureCallback<>() {

            @Override
            public void onSuccess(T result) {
                javaFuture.complete(result);
            }

            @Override
            public void onFailure(Throwable error) {
                javaFuture.completeExceptionally(error);
            }

        }, MoreExecutors.directExecutor());

        return javaFuture;
    }
}